CN110028624A - Preparation method and application based on hemicellulose compound temperature-sensitive gel - Google Patents
Preparation method and application based on hemicellulose compound temperature-sensitive gel Download PDFInfo
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- CN110028624A CN110028624A CN201910302977.1A CN201910302977A CN110028624A CN 110028624 A CN110028624 A CN 110028624A CN 201910302977 A CN201910302977 A CN 201910302977A CN 110028624 A CN110028624 A CN 110028624A
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- China
- Prior art keywords
- hemicellulose
- bagasse
- water
- isopropyl acrylamide
- sensitive gel
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- 229920002488 Hemicellulose Polymers 0.000 title claims abstract description 73
- 150000001875 compounds Chemical class 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 241000609240 Ambelania acida Species 0.000 claims abstract description 68
- 239000010905 bagasse Substances 0.000 claims abstract description 67
- IZUPBVBPLAPZRR-UHFFFAOYSA-N pentachlorophenol Chemical compound OC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl IZUPBVBPLAPZRR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 38
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical compound CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 26
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002351 wastewater Substances 0.000 claims abstract description 10
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 6
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 238000003809 water extraction Methods 0.000 claims abstract description 5
- WVEHVVJGYXWYFZ-UHFFFAOYSA-N C(CC)(=O)OCCC.C=CC Chemical compound C(CC)(=O)OCCC.C=CC WVEHVVJGYXWYFZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229920001577 copolymer Polymers 0.000 claims abstract description 3
- 238000004090 dissolution Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 239000000499 gel Substances 0.000 claims description 45
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000000017 hydrogel Substances 0.000 claims description 27
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 12
- 238000007605 air drying Methods 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 10
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 238000004108 freeze drying Methods 0.000 claims description 8
- 230000001376 precipitating effect Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 5
- 239000000376 reactant Substances 0.000 claims description 5
- QOSMNYMQXIVWKY-UHFFFAOYSA-N Propyl levulinate Chemical compound CCCOC(=O)CCC(C)=O QOSMNYMQXIVWKY-UHFFFAOYSA-N 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 17
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 8
- 238000000605 extraction Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 240000000111 Saccharum officinarum Species 0.000 description 6
- 235000007201 Saccharum officinarum Nutrition 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 150000002772 monosaccharides Chemical class 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 241000353097 Molva molva Species 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000010309 melting process Methods 0.000 description 4
- 229920003213 poly(N-isopropyl acrylamide) Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- -1 for example Substances 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 2
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 2
- 241001343274 Dichrostachys spicata Species 0.000 description 2
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- DLRVVLDZNNYCBX-UHFFFAOYSA-N Polydextrose Polymers OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(O)O1 DLRVVLDZNNYCBX-UHFFFAOYSA-N 0.000 description 2
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 238000009333 weeding Methods 0.000 description 2
- 229920001221 xylan Polymers 0.000 description 2
- 150000004823 xylans Chemical class 0.000 description 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 1
- YICILWNDMQTUIY-UHFFFAOYSA-N 2-methylidenepentanamide Chemical compound CCCC(=C)C(N)=O YICILWNDMQTUIY-UHFFFAOYSA-N 0.000 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 229920001100 Polydextrose Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- FRYDSOYOHWGSMD-UHFFFAOYSA-N [C].O Chemical compound [C].O FRYDSOYOHWGSMD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000009418 agronomic effect Effects 0.000 description 1
- IAJILQKETJEXLJ-RSJOWCBRSA-N aldehydo-D-galacturonic acid Chemical compound O=C[C@H](O)[C@@H](O)[C@@H](O)[C@H](O)C(O)=O IAJILQKETJEXLJ-RSJOWCBRSA-N 0.000 description 1
- IAJILQKETJEXLJ-QTBDOELSSA-N aldehydo-D-glucuronic acid Chemical compound O=C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)C(O)=O IAJILQKETJEXLJ-QTBDOELSSA-N 0.000 description 1
- 239000003619 algicide Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- PYMYPHUHKUWMLA-WDCZJNDASA-N arabinose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)C=O PYMYPHUHKUWMLA-WDCZJNDASA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011557 critical solution Substances 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 229940097043 glucuronic acid Drugs 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 235000020256 human milk Nutrition 0.000 description 1
- 210000004251 human milk Anatomy 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- WDFKEEALECCKTJ-UHFFFAOYSA-N n-propylprop-2-enamide Chemical compound CCCNC(=O)C=C WDFKEEALECCKTJ-UHFFFAOYSA-N 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000001259 polydextrose Substances 0.000 description 1
- 229940035035 polydextrose Drugs 0.000 description 1
- 235000013856 polydextrose Nutrition 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 150000004804 polysaccharides Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009923 sugaring Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
- 239000011864 timber preservative Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 150000003742 xyloses Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Materials Engineering (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of preparation methods based on hemicellulose compound temperature-sensitive gel, this method grinds and sieves air-dried bagasse, obtain bagasse powder raw material, and with alkali assist hot-water extraction method, by the hemicellulose dissolution in bagasse, followed by aqueous solution micell polymerization method, n-isopropyl acrylamide and propyl acrylate are subjected to graft copolymerization, then hemicellulose is added, and with N, copolymer and hemicellulose are crosslinked by N- methylene-bisacrylamide, product is through cutting, cleaning, it is cold it is dry after obtain poly-N-isopropyl acrylamide grafted propylene propyl propionate/temperature sensitive plural gel of hemicellulose；The gel as made from this method is to the pentachlorophenol adsorption capacity with higher in organic wastewater.
Description
Technical field
The present invention relates to one kind by poly-N-isopropyl acrylamide graft copolymerization propyl acrylate and the compound system of hemicellulose
The method of standby thermo-sensitive gel, belongs to high-molecular compounded and modified field of material technology.
Background technique
Sponge contains the hemicellulose of about 15-35%, and most of hemicellulose is gone in pulp stage
It removes, remains in waste liquid.The calorific value of hemicellulose is 13.6 MJ/kg, is the half of lignin.Modern slurrying and paper maker
Sulphate cook technique in industry usually burns the hemicellulose in waste liquid, and preparation produces required steam to utilize.This
The mode of kind processing hemicellulose is not fully developed this saccharoidal property, is a kind of great wasting of resources.Currentization
Stone resource is almost exhausted, particularly important to natural polymer, such as the effective use of hemicellulose.Existing preextraction hemicellulose
Method mainly include physical method, chemical method and biological method.Specifically, having diluted acid extraction, water hot extraction, steam quick-fried
Broken extraction, alkali extraction and dilute acid steam explosion etc..However, the process conditions that diluted acid extracts hemicellulose are difficult to control, cellulose
Hydrolysis can reduce pulping yield；In steam blasting extraction process, though extractable obtain a large amount of hemicellulose, cellulose
Structure can be destroyed, and be unfavorable for the promotion of paper strength.The operating cost that alkali carries take is high, and a large amount of alkali and acids chemicals need
It is added in system, the adjusting for pH.Hot water extraction hemicellulose can effectively reduce cost and environmental pollution, and hot water is molten
Solve extracting hemicelluloses after can also quickly with other polymer substances, for example, cellulose and lignin are separated.Hot water extraction
Method has the shorter reaction time, and higher acid concentration and higher temperature etc. react advantage, favorably generate more xyloses
Monomer.The concentrated extract of the hemicellulose of extraction can be separated with the mode that film filters, this is avoided that using high concentration
Acid.
Hemicellulose is the second largest carbohydrate high polymer for constituting plant cell wall construction, and content is only second to fiber
Element, but it is different from the cellulose of homogeneous polysaccharide.Hemicellulose is a kind of heteroglycan being made of different types of monosaccharide.These
Monosaccharide mainly has xylose, glucose, mannose, galactolipin, arabinose, glucuronic acid and galacturonic acid etc.[3].In structure
When at hemicellulose, uniform monosaccharide is not constituted with a kind of connection type with a kind of monosaccharide, by two or more monosaccharide with
A variety of connection types constitute branched heteroglycan.Hemicellulose is a kind of carbon hydrate that content is more in plant fiber material
Object, its content in needlebush are 25%~35%, and the content in leaf wood is 18%~22%, and in gramineae plant
Content is 16 %~25%.In recent years, becoming increasingly conspicuous with energy problem, hemicellulose are gradually considered most rich on the earth
Rich, most cheap one of renewable resource；There are significant differences for its hemicellulose level of different types of plant and structure.Its
In, needlebush mainly contains polydextrose mannose, and leaf wood and grass as raw material mainly contain xylan and polyglucuronic acid
Branch, and the xylan branch in leaf wood is mainly acetyl group.
Sugarcane is the important sugar crop of China, and bagasse is the main waste (accounting for 24%~27%) of sugar industry,
It is a kind of important renewable biomass raw material.Sugarcane is the sugaring raw material of Largest In China, southern sugarcane district sugarcane total output
7000t, the bagasse yield generated every year is about 2000t, utilizes space and potentiality with very big.With other crop material phases
Than hemicellulose level is higher in bagasse.Since bagasse converts and utilizes the limitation of technology, current most of bagasse quilts
It directly burns or passes into disuse, utilization rate is very low, not only results in waste of resources, but also bring environmental pollution.In recent years,
Attention due to country to agricultural waste utilization, Comprehensive Utilization of Bagasse aspect also obtain quick development.Due to biology
The fast development of matter trans-utilization engineering technology, it has been found that bagasse is not only natural macromolecular material, green chemical
Treasure-house, wherein the biomass energy that is also richly stored with.Therefore, how to have been obtained using bagasse production renewable energy bigger
Concern.Is produced from the second largest province Yunnan of sugar as China, there are about the bagasses of 170t within 1 year.Bagasse is product of the sugarcane by squeezing,
Also belong to the scope of crop material.It is up to 25 %~30% of hemicellulose in bagasse, can be used as the desirable feedstock of hemicellulose.
Hydrogel is the cross-linked polymer using water as decentralized medium, when its into the water when can absorb a large amount of moisture,
It is swollen rapidly and is not dissolved.Based on good characteristics such as hydrogel high-efficiency water-absorbing, water conservation and biodegradables, cured in biology
It is used widely in the fields such as medicine, food, agricultural, environment.The preparation method of hemicellulose based aquagel can generally speaking be divided into
Chemical crosslink technique and physical crosslinking method.In contrast, chemical gel is more more stable than physical gel.Hydrogel is that one kind can be in water
It is swollen and undissolved three-dimensional network shape hydrophilic polymer, since a large amount of hydrophilic radicals are contained in inside, can absorb and keep big
Moisture is measured, and the presence of cross-linked network can make it that original shape be kept to be not dissolved after water absorption and swelling.Hydrogel is hydrophilic
Property but polymer not soluble in water, the multicomponent system being made of high molecular three-dimensional network and water.According to hydrogel to the external world
The response condition of stimulation can be divided into conventional hydrogels and intelligent aqueous gel.Intelligent aqueous gel is that one kind can produce environmental stimuli
The hydrogel of raw sensitive response.Typical environmental stimuli has temperature, pH value, solvent, salinity, light, electric field, chemical substance etc..
Due to progress in Intelligent Hydrogel chemical converter, memory cell switch, sensor, the control delivery systme of drug, artificial muscle,
The potential application of the embedding of chemical storage device, molecule separation system, organized enzyme etc., thus to the research of intelligent aqueous gel
Through the big hot spot for becoming functional polymer research field.And temperature-sensitive hydrogel is that one kind can be by quick stereomutation
The progress in Intelligent Hydrogel material that extraneous temperature change is responded.This kind of hydrogel can occur discontinuous within specified temperatures
Volume-phase transition, this temperature is referred to as lower critical solution temperature (LCST).When temperature is lower than LCST, hydrogel is in molten
Swollen state, however, when being higher than the temperature, the rapid dehydration shrinkage of hydrogel, to show the responsiveness to temperature.Poly- (N-
N-isopropylacrylamide) (PNIPA) hydrogel is to study most commonly used temperature-sensitive hydrogel at present, the LCST in pure water
Temperature is 32 DEG C, close with body temperature, thus is had broad application prospects in biomedical materials field.From 1986
Since Pelton synthesizes n-isopropyl acrylamide, has become and studied widest temperature sensitive type polymer at present.2018
It is crosslinking agent that Hu Yaoqiang seminar, which develops using n-isopropyl acrylamide as monomer, N,N methylene bis acrylamide, over cure
Sour potassium is initiator, prepares thermo-sensitive gel using no emulsion polymerization；2018 Nian Duan head seminars are different with houghite and N-
Propylacrylamide is raw material, and organic-inorganic PNIPA/LDHs temperature sensitivity Compound Water has been made using free radical polymerization
Gel, the results showed that, the invertibity variation of collosol and gel can be achieved at 33 DEG C or so for PNIPA/LDHs composite hydrogel；, Chu etc.
Graphene oxide is introduced into PNIPA hydrogel, obtains and extends with temperature sensitivity and the high of near-infrared response performance
Property hydrogel.But for hemicellulose, hemicellulose and the compound preparation hydrophobicity of n-isopropyl acrylamide are temperature sensitive solidifying
Glue has not been reported.
Pentachlorophenol (PCP) is a kind of persistence organic pollutant, is widely used as fungicide, algicide, insecticide, weeding
Agent and timber preservative, it was reported that they can cause the mutation of allergy, stimulation, dermatitis, cancer and human gene.Pentachlorophenol
It can be detected in surface water, deposit, aquatile, topsoil and human milk, and since it has biology product
The features such as tired property and environmental persistence, the negative effect to the mankind and animals and plants health is still a crucial environmental problem.
In addition, pentachlorophenol can be with long-distance migration and there are a very long time in environment, as the accumulation of their concentration can be to fish
Class, wild animal and the mankind cause undesirable health effect, it is therefore necessary to remove pentachlorophenol before organic wastewater discharges.Mesh
Preceding to have developed many methods removal PCP, such as absorption aoxidizes, microbial degradation, due to its water solubility, by with
Upper traditional physics and chemical method cannot effectively remove them, therefore absorption is considered as a kind of relative efficiency removal
The method of PCP.
The organic wastewater pollution problem in conjunction with caused by modern industry, the application, which is described in detail to prepare using bagasse as raw material, efficiently to inhale
The process flow of the thermo-sensitive gel of Annex V chlorophenol；It is not only to make up n-isopropyl acrylamide class thermo-sensitive gel in organic wastewater
The vacancy of adsorption treatment research, and the comprehensive utilization ratio of bagasse resource is improved, it is that the high value added utilization of bagasse rises
To positive impetus.
Summary of the invention
The new way of high value added utilization is provided for resourceful Bagasse Material, while in efficiently removal organic wastewater
Pentachlorophenol, the present invention provides a kind of preparation method based on hemicellulose compound temperature-sensitive gel, this method utilizes resource
Abundant bagasse obtains half fiber with ethyl alcohol precipitating, centrifuge separation and freeze-drying by sodium hydroxide water hot extraction's method for raw material
Dimension element, using aqueous solution micell polymerization method by n-isopropyl acrylamide graft copolymerization propyl acrylate, and is cross-linked to form temperature sensitive
Hydrogel product further expands the application field of Bagasse Hemicellulose and thermo-sensitive gel.
The process technology scheme for realizing that the object of the invention is taken is as follows:
1. being ground to the bagasse raw material after air-drying, screening process, qualified bagasse powder raw material is obtained；
2. dissolve out using the method that alkali assists hot-water extraction by hemicellulose in bagasse powder raw material, and with alcohol precipitating, film divides
From and washing, obtain hemicellulose after freeze-drying；
3. utilizing aqueous solution micell polymerization method, n-isopropyl acrylamide and propyl acrylate are subjected to graft copolymerization, after
And hemicellulose being added, and with N, copolymer and hemicellulose are crosslinked by N- methylene-bisacrylamide, and reaction terminates, and are coagulated
Glue cut, cleaned, be lyophilized after to obtain poly-N-isopropyl acrylamide grafted propylene propyl propionate/hemicellulose temperature sensitive compound solidifying
Glue (PNIPA-co-PA/Hemic).
Above method concrete operations are as follows:
(1) melting process of bagasse: bagasse is after air-drying processing, wherein air-drying the moisture of raw material because of different ground
Area, different seasons and air humidity are different and generate certain difference, general moisture control in the range of 3~30%,
Air dry matter is ground, and is crossed after the screening of 40 ~ 200 mesh sieve as bagasse powder raw material；
(2) treatment process of bagasse hemicellulose: bagasse powder raw material, water, sodium hydroxide being mixed, are put into reactor tank,
30 ~ 90 min are reacted under conditions of 150 ~ 200 DEG C, wherein the mass ratio of over dry bagasse powder and water is 1:5 ~ 1:10, over dry sugarcane
The mass ratio of ground-slag end and sodium hydroxide is 100:1 ~ 100:10, and after reaction, reactor tank cools down rapidly in water, reactant
It is separated by solid-liquid separation, dehydrated alcohol precipitating is poured into filtrate, then filtered with the film of 0.35 ~ 0.65 nm, dehydrated alcohol washing is frozen
Bagasse hemicellulose is obtained after dry
(3) synthesis of PNIPA-co-PA/Hemic thermo-sensitive gel
By n-isopropyl acrylamide and N, the mass ratio of N- methylene-bisacrylamide is the ratio of 15:1 ~ 30:1, and N- is different
Propylacrylamide and N, N- methylene-bisacrylamide are dissolved in deionized water, are transferred in reaction vessel, then by third
Dispersion and dissolution is added into reaction vessel in olefin(e) acid propyl ester and hemicellulose, after leading to 15 ~ 30min of nitrogen purge gas, then successively adds
Enter neopelex, ammonium persulfate, tetramethylethylenediamine, sealed reaction vessel, in 45 ~ 65 DEG C of constant temperature water bath device
React 12 ~ 36 h；Hydrogel obtained is taken out, 24 ~ 48h is impregnated after stripping and slicing in dehydrated alcohol, impregnates 3 in deionized water
~ 8 days, every 10 ~ 15h replaced a water, is made after freeze-drying and is based on hemicellulose compound temperature-sensitive gel PNIPA-co-PA/Hemic,
Wherein the mass volume ratio g:mL of n-isopropyl acrylamide and deionized water is 3:8 ~ 1:5, and neopelex adds
Dosage is the 3 ~ 8% of deionized water quality, and ammonium persulfate: tetramethylethylenediamine: the mass ratio of n-isopropyl acrylamide is
0.02:0.01:1~0.2:0.1:1；
The additive amount of the propyl acrylate is the 5 ~ 20% of the quality of n-isopropyl acrylamide；The additive amount of hemicellulose is
The 3 ~ 15% of the quality of n-isopropyl acrylamide.
The present invention by hemicellulose compound temperature-sensitive gel application is based on made from the above method in removal another object is that have
In machine waste water in pentachlorophenol.
The beneficial effects of the present invention are: tradition, harmful, method complicated for operation have been cast aside in bagasse hemicellulose extraction, turn
To cleaning, efficient, the easy new way of operation；Reagent itself does not generate any harmful substance to environment during the reaction, and
And the Action advantage of the complementary purification hemicellulose of plurality of reagents is concentrated.Using aqueous solution micell polymerization method, synthesis is poly-
N-isopropyl acrylamide graft copolymerization acrylic acid is total to propyl ester (PNIPAM-PA), and it is carried out hemicellulose it is compound, crosslinking make
With the hydrophobic water gel for obtaining that there is temperature-sensing property；The synthesis macromolecule composite natral high-molecular gel has synthesis macromolecule
The general character of class adsorbent material, can be in multiple industries such as petrochemical industry refining, agriculture weeding, weaving, leather manufacture, paper and timber processing
Good application prospect is played in terms of the processing of generated pentachlorophenol organic liquid waste.Meanwhile the temperature sensitive suction of the hemicellulose group
It is excellent that attached gel is also equipped with temperature sense performance, hypotoxicity, good absorption property, environment friendly and cheap price etc.
Gesture, is novel, the green functional material of one kind of mainstream development now, this attractive gel is embodied as bagasse high value added utilization
One feasible scheme is provided, while also providing certain application foundation for the functionalization exploitation of waste agronomic crop.
Specific embodiment
Below with reference to embodiment, invention is further described in detail, but the scope of the present invention is not limited in described
Hold.
The preparation method of the modified temperature-sensitive hydrogel of embodiment 1:PNIPA-co-PA/Hemic, concrete operations are as follows:
(1) melting process of bagasse
Bagasse is after air-drying processing, and moisture content 3%, air dry matter is ground, and is after the screening of the sieve of 40 ~ 60 mesh
Bagasse powder raw material；
(2) treatment process of bagasse hemicellulose
By 1.03g bagasse powder raw material (if air-drying raw material moisture is 3%, 1 g of over dry Bagasse Material, then 1/(100-3) %=
1.03 g bagasse powder raw materials), water, sodium hydroxide mixing, be put into reactor tank, react 90min under conditions of 150 DEG C,
Middle 1.00 g of over dry bagasse powder, the dosage of water are 5.00 g, 0.01 g of dosage of sodium hydroxide；After reaction, reactor tank
It cools down in water rapidly, reactant is separated by solid-liquid separation using 350 mesh industry screen cloths, dehydrated alcohol precipitating is poured into filtrate, is adopted
It is washed with the filtering of the film of 0.35 nm and dehydrated alcohol, after freeze-drying, obtains bagasse hemicellulose；
(3) synthesis of PNIPA-co-PA/Hemic thermo-sensitive gel
The n-isopropyl acrylamide of 3.00 g and 0.20 g N,N methylene bis acrylamide are dissolved in the deionization of 8 mL
It in water, is transferred in reaction tube, then by 0.15 g propyl acrylate (matter of 5 wt% relative to n-isopropyl acrylamide
Measure, then 3 × 5%=0.15g propyl acrylate) and 0.09 g hemicellulose (3% quality relative to n-isopropyl acrylamide, then
3 × 3%=0.09 g), is transferred in test tube and disperses and dissolve；Then, after leading to nitrogen purge gas 15min, 0.24 is being sequentially added
G neopelex (SDBS, 3% relative to water in system, then 8 × 3%=0.24 g neopelex),
0.06 g ammonium persulfate (APS) and 0.03 g tetramethylethylenediamine (TEMED), plug test tube with plug；In 45 DEG C of water-bath
36h is reacted in thermostat；The hydrogel of preparation is taken out, is cut into a thickness of the disk of 0.20 cm；Then it is soaked in dehydrated alcohol
24 h are steeped, are impregnated 3 days in deionized water, every 10 h replaces a water, and it is temperature sensitive solidifying that PNIPA-co-PA/Hemic is obtained after freeze-drying
Glue；
(4) absorption property of thermo-sensitive gel
Pentachlorophenol determining adsorption method: 0.1 mol/L HCl is mixed into pentachlorophenol solution, and pH value is adjusted to 3；
To measure gel adsorption effect, 100 mg PNIPA-co-PA/Hemic thermo-sensitive gels are added 0.05 mmol/L's of 50mL
In PCP simulated wastewater for 24 hours；The concentration of pentachlorophenol before and after adsorption treatment is measured by high performance liquid chromatography；It obtains
PNIPA-co-PA/Hemic thermo-sensitive gel has stronger adsorption capacity to pentachlorophenol, and adsorption rate is up to 75%.
The preparation method of the modified temperature-sensitive hydrogel of embodiment 2:PNIPA-co-PA/Hemic, concrete operations are as follows:
(1) melting process of bagasse:
Bagasse is after air-drying processing, and moisture content 15%, air dry matter is ground, after the screening of the sieve of 100 ~ 120 mesh
For bagasse powder raw material；
(2) treatment process of bagasse hemicellulose:
By 1.18 g bagasse powder raw materials (if air-drying raw material moisture is 15%, over dry bagasse powder 1g, then 1/(100-15) %=
1.18 g bagasse powder raw materials), water, sodium hydroxide mixing, be put into reactor tank, react 60min under conditions of 180 DEG C,
Middle 1.00 g of over dry bagasse powder, the dosage of water are 7.00 g, and the dosage of sodium hydroxide is 0.05 g, after reaction, reaction
Tank cools down rapidly in water, is separated by solid-liquid separation reactant using 400 mesh industry screen cloths, absolute alcohol precipitating is poured into filtrate,
Bagasse hemicellulose is obtained using the film filtering and dehydrated alcohol washing, Leng Ganhou of 0.50 nm；
(3) synthesis of PNIPA-co-PA/Hemic thermo-sensitive gel:
By the n-isopropyl acrylamide of 3.00 g and 0.15 g N,N methylene bis acrylamide be dissolved in 10 mL go from
It in sub- water, is transferred in reaction tube, then by 0.36g propyl acrylate (12% matter relative to n-isopropyl acrylamide
Measure, then 3 × 12%=0.36g propyl acrylate) and 0.30g hemicellulose (10% quality relative to n-isopropyl acrylamide,
Then 3 × 10%=0.30g), it is transferred in test tube and disperses and dissolve；Then, it after leading to 20 min of nitrogen purge gas, sequentially adds
(SDBS, 5% relative to water in system, then 10 × 5%=0.50g dodecyl benzene sulfonic acid for 0.50g neopelex
Sodium), 0.21 g ammonium persulfate (APS) and 0.18 g tetramethylethylenediamine (TEMED), plug test tube with plug；At 50 DEG C
20h is reacted in constant temperature water bath device；The hydrogel of preparation is taken out, is cut into a thickness of the disk of 0.40 cm；Then, in anhydrous second
36 h are impregnated in alcohol, are impregnated 5 days in deionized water, and every 12 h replaces a water, and Leng Ganhou obtains PNIPA-co-PA/Hemic
Thermo-sensitive gel；
(4) absorption property of thermo-sensitive gel
Pentachlorophenol determining adsorption method: 0.1mol/L HCl is mixed into pentachlorophenol solution, and pH value is adjusted to 3；
To measure gel adsorption effect, 100 mg PNIPA-co-PA/Hemic thermo-sensitive gels are added 50 mL, 0.05 mmol/L's
In PCP simulated wastewater for 24 hours；The concentration of pentachlorophenol before and after adsorption treatment is measured by high performance liquid chromatography；It obtains
PNIPA-co-PA/Hemic thermo-sensitive gel has stronger adsorption capacity to pentachlorophenol, and adsorption rate is up to 99%.
The preparation method of the modified temperature-sensitive hydrogel of embodiment 3:PNIPA-co-PA/Hemic, concrete operations are as follows:
(1) melting process of bagasse:
Bagasse is after air-drying processing, and moisture content 30%, air dry matter is ground, after the screening of the sieve of 180 ~ 200 mesh
For bagasse powder raw material；
(2) treatment process of bagasse hemicellulose:
By 1.43 g bagasse powder raw materials (if air-drying raw material moisture is 30%, over dry bagasse powder 1g, then 1/(100-30) %=
1.43 g bagasse powder raw materials), water, sodium hydroxide mixing, be put into reactor tank, react 30min under conditions of 200 DEG C,
Middle 1.00 g of over dry bagasse powder, the dosage of water are 10.00 g, and the dosage of sodium hydroxide is 0.10 g；After reaction, it reacts
Tank cools down rapidly in water, is separated by solid-liquid separation reactant using 500 mesh industry screen cloths, dehydrated alcohol precipitating is poured into filtrate,
Bagasse hemicellulose is obtained using the film filtering and dehydrated alcohol washing, Leng Ganhou of 0.65 nm；
(3) synthesis of PNIPA-co-PA/Hemic thermo-sensitive gel:
By the n-isopropyl acrylamide of 3.00 g and 0.10 g N,N methylene bis acrylamide be dissolved in 15 mL go from
It in sub- water, is transferred in reaction tube, then by 0.60 g propyl acrylate (20% matter relative to n-isopropyl acrylamide
Measure, then 3 × 20%=0.60 g propyl acrylate) and 0.45 g hemicellulose (15% matter relative to n-isopropyl acrylamide
Amount, then 3 × 15%=0.45 g), is transferred in test tube and disperses and dissolve；Then, it after leading to 30 min of nitrogen purge gas, sequentially adds
(SDBS, 8% relative to water in system, then 10 × 8%=0.80 g dodecyl benzene sulfonic acid for 0.80 g neopelex
Sodium), 0.60 g ammonium persulfate (APS) and 0.30 g tetramethylethylenediamine (TEMED), plug test tube with plug；At 65 DEG C
15h is reacted in constant temperature water bath device；The hydrogel of preparation is taken out, is cut into a thickness of the disk of 0.60 cm；Then in dehydrated alcohol
48 h of middle immersion impregnate 8 days in deionized water, and every 15 h replaces a water, and Leng Ganhou obtains PNIPA-co-PA/Hemic temperature
Quick gel；
(4) absorption property of thermo-sensitive gel
Pentachlorophenol determining adsorption method: 0.1 mol/L HCl is mixed into pentachlorophenol solution, and pH value is adjusted to 3；
To measure gel adsorption effect, 100 mg PNIPA-co-PA/Hemic thermo-sensitive gels are added 50 mL, 0.05 mmol/L's
In PCP simulated wastewater for 24 hours；Wherein the concentration of the pentachlorophenol before and after adsorption treatment is measured by high performance liquid chromatography.?
PNIPA-co-PA/Hemic thermo-sensitive gel has stronger adsorption capacity to pentachlorophenol out, and adsorption rate is up to 88%.
Claims (5)
1. a kind of preparation method based on hemicellulose compound temperature-sensitive gel, it is characterised in that carry out as follows:
1. being ground to the bagasse raw material after air-drying, screening process, qualified bagasse powder raw material is obtained；
2. dissolve out using the method that alkali assists hot-water extraction by hemicellulose in bagasse powder raw material, and with alcohol precipitating, film divides
From and washing, obtain hemicellulose after freeze-drying；
3. utilizing aqueous solution micell polymerization method, n-isopropyl acrylamide and propyl acrylate are subjected to graft copolymerization, after
And hemicellulose being added, and with N, copolymer and hemicellulose are crosslinked by N- methylene-bisacrylamide, and reaction terminates, and are coagulated
Glue cut, cleaned, be lyophilized after to obtain poly-N-isopropyl acrylamide grafted propylene propyl propionate/hemicellulose temperature sensitive compound solidifying
Glue.
2. the preparation method based on hemicellulose compound temperature-sensitive gel according to claim 1, it is characterised in that concrete operations
It is as follows:
1. bagasse is after air-drying processing, moisture control 3~30%, ground by air dry matter, crosses 40 ~ 200 mesh sieve sieve
It is bagasse powder raw material after choosing；
2. by bagasse powder raw material, water, sodium hydroxide mix, be put into reactor tank, under conditions of 150 ~ 200 DEG C react 30 ~
90 min, wherein the mass ratio of over dry bagasse powder and water is 1:5 ~ 1:10, the mass ratio of over dry bagasse powder and sodium hydroxide
For 100:1 ~ 100:10, after reaction, reactor tank cools down rapidly in water, and reactant is separated by solid-liquid separation, and nothing is poured into filtrate
Then water-ethanol precipitating is filtered with the film of 0.35 ~ 0.65 nm, dehydrated alcohol washing obtains bagasse hemicellulose after freeze-drying；
3. pressing n-isopropyl acrylamide and N, the mass ratio of N- methylene-bisacrylamide is the ratio of 15:1 ~ 30:1, by N-
N-isopropylacrylamide and N, N- methylene-bisacrylamide are dissolved in deionized water, are transferred in reaction vessel, then will
Dispersion and dissolution is added into reaction vessel in propyl acrylate and hemicellulose, after leading to 15 ~ 30min of nitrogen purge gas, then successively
Neopelex, ammonium persulfate, tetramethylethylenediamine, sealed reaction vessel, in 45 ~ 65 DEG C of constant temperature water bath device is added
12 ~ 36 h of middle reaction；Hydrogel obtained is taken out, 24 ~ 48h is impregnated after stripping and slicing in dehydrated alcohol, soaks in deionized water
Bubble 3 ~ 8 days, every 10 ~ 15h replace a water, are made after freeze-drying and are based on hemicellulose compound temperature-sensitive gel, wherein N- isopropyl third
The mass volume ratio g:mL of acrylamide and deionized water is 3:8 ~ 1:5, and the additive amount of neopelex is deionized water
3 ~ 8 % of quality, ammonium persulfate: tetramethylethylenediamine: the mass ratio of n-isopropyl acrylamide is 0.02:0.01:1 ~ 0.2:
0.1:1。
3. the preparation method according to claim 2 based on hemicellulose compound temperature-sensitive gel, it is characterised in that: acrylic acid
The additive amount of propyl ester is the 5 ~ 20% of the quality of n-isopropyl acrylamide.
4. the preparation method according to claim 2 based on hemicellulose compound temperature-sensitive gel, it is characterised in that: hemicellulose
The additive amount of element is the 3 ~ 15% of the quality of n-isopropyl acrylamide.
5. compound based on hemicellulose made from the preparation method based on hemicellulose compound temperature-sensitive gel described in claim 1-4
Application of the thermo-sensitive gel in removal organic wastewater in pentachlorophenol.
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