JP5082609B2 - 疎水性を有するセルロース系成形体 - Google Patents
疎水性を有するセルロース系成形体 Download PDFInfo
- Publication number
- JP5082609B2 JP5082609B2 JP2007155507A JP2007155507A JP5082609B2 JP 5082609 B2 JP5082609 B2 JP 5082609B2 JP 2007155507 A JP2007155507 A JP 2007155507A JP 2007155507 A JP2007155507 A JP 2007155507A JP 5082609 B2 JP5082609 B2 JP 5082609B2
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- Prior art keywords
- compound
- cellulose
- oxidized cellulose
- hydrophobic
- hydrophobic compound
- Prior art date
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- 229920002678 cellulose Polymers 0.000 title claims description 35
- 239000001913 cellulose Substances 0.000 title claims description 35
- 150000001875 compounds Chemical class 0.000 claims description 56
- 229920002201 Oxidized cellulose Polymers 0.000 claims description 52
- 229940107304 oxidized cellulose Drugs 0.000 claims description 52
- 239000000835 fiber Substances 0.000 claims description 50
- -1 fatty acid bisamide compound Chemical class 0.000 claims description 49
- 230000002209 hydrophobic effect Effects 0.000 claims description 46
- 239000006185 dispersion Substances 0.000 claims description 36
- 229920001410 Microfiber Polymers 0.000 claims description 27
- 239000003658 microfiber Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 17
- 239000000194 fatty acid Substances 0.000 claims description 17
- 229930195729 fatty acid Natural products 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 10
- 229910001508 alkali metal halide Inorganic materials 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 7
- 229940014800 succinic anhydride Drugs 0.000 claims description 5
- 150000008045 alkali metal halides Chemical class 0.000 claims description 4
- VEZXCJBBBCKRPI-UHFFFAOYSA-N beta-propiolactone Chemical class O=C1CCO1 VEZXCJBBBCKRPI-UHFFFAOYSA-N 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims 1
- 210000001724 microfibril Anatomy 0.000 claims 1
- 239000000047 product Substances 0.000 description 21
- 239000010408 film Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 125000004432 carbon atom Chemical group C* 0.000 description 10
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 10
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 229960000380 propiolactone Drugs 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 229920003043 Cellulose fiber Polymers 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000013055 pulp slurry Substances 0.000 description 6
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Chemical class CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000005708 Sodium hypochlorite Substances 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 125000001165 hydrophobic group Chemical group 0.000 description 3
- 235000015110 jellies Nutrition 0.000 description 3
- 239000008274 jelly Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- XDOFQFKRPWOURC-UHFFFAOYSA-N 16-methylheptadecanoic acid Chemical compound CC(C)CCCCCCCCCCCCCCC(O)=O XDOFQFKRPWOURC-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229920006317 cationic polymer Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 2
- 125000004985 dialkyl amino alkyl group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Chemical compound [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 2
- 239000008204 material by function Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 235000009518 sodium iodide Nutrition 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical class O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical class ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 1
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 description 1
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 description 1
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- LVGKNOAMLMIIKO-UHFFFAOYSA-N Elaidinsaeure-aethylester Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC LVGKNOAMLMIIKO-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 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 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
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- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
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- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
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- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
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- 230000003373 anti-fouling effect Effects 0.000 description 1
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- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- DKSMCEUSSQTGBK-UHFFFAOYSA-N bromous acid Chemical compound OBr=O DKSMCEUSSQTGBK-UHFFFAOYSA-N 0.000 description 1
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- 150000007942 carboxylates Chemical class 0.000 description 1
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- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical compound NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 description 1
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 1
- LVGKNOAMLMIIKO-QXMHVHEDSA-N ethyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC LVGKNOAMLMIIKO-QXMHVHEDSA-N 0.000 description 1
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- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- CUILPNURFADTPE-UHFFFAOYSA-N hypobromous acid Chemical compound BrO CUILPNURFADTPE-UHFFFAOYSA-N 0.000 description 1
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- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
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- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 150000003754 zirconium Chemical class 0.000 description 1
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 description 1
- XJUNLJFOHNHSAR-UHFFFAOYSA-J zirconium(4+);dicarbonate Chemical compound [Zr+4].[O-]C([O-])=O.[O-]C([O-])=O XJUNLJFOHNHSAR-UHFFFAOYSA-J 0.000 description 1
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Description
Biomacromolecules、7巻6号、1687−1691頁、2006年
(1)セルロース長繊維を触媒としてN−オキシル化合物とハロゲン化アルカリ金属塩を用いて酸化し、これにより得られた酸化セルロース繊維を洗浄後に解繊処理して得られた酸化セルロース微小繊維の水分散液に対し、疎水性化合物(A)を添加し、次いで乾燥することによって得られる、疎水性を有するセルロース系成形体、
(2)疎水性化合物(A)が、2−オキセタノン系化合物、脂肪酸ビスアミド系化合物の少なくとも1種である前記(1)のセルロース系成形体、
(3)疎水性化合物(A)が、脂肪酸系化合物、置換無水コハク酸系化合物の少なくとも1種であり、疎水性化合物(A)の固着剤(B)が用いられる前記(1)のセルロース系成形体、
(4)セルロース系成形体表面への水の接触角が90°以上である前記(1)〜(3)のいずれかのセルロース系成形体
である。
攪拌装置を備えた3L容ガラス製ビーカーにセルロース長繊維として未叩解の針葉樹晒クラフトパルプ(カナディアンスタンダードフリーネス約700)の2.0%スラリー1200gを投入して緩やかに攪拌し、N−オキシル化合物として2,2,6,6−テトラメチル−1−ピペリジン−N−オキシル0.3gとハロゲン化アルカリ金属塩として臭化ナトリウム3.0gを触媒として加えて溶解させ、更にイオン交換水を加えて総量を1800gとした。このパルプスラリーに次亜塩素酸ナトリウム水溶液(塩素濃度8%)を63.8g投入し、室温で攪拌しつつパルプスラリーのpHが10.5±0.3を保持するように4%水酸化ナトリウム水溶液を断続的に滴下した。次亜塩素酸ナトリウム水溶液投入後約90分でpHの変動が殆ど無くなったことを確認して攪拌を停止し、酸化反応の終点とした。それまでに滴下した4%水酸化ナトリウム水溶液は64gだった。反応後のパルプスラリーを200メッシュのナイロン製濾布で濾過した後、残存する水溶性薬品を除去するために濾過物を3L容ガラス製ビーカーに投入し、イオン交換水約2000gを加えて攪拌し、200メッシュのナイロン製濾布で濾過する操作を3回繰り返した。最後に濾過物にイオン交換水を加えて全量を1200gとして攪拌し、濃度約2.0%の酸化パルプスラリーを得た。なお、パルプスラリーの濃度は110℃で3時間加熱乾燥した後の残存物の重量から求めた。TAPPI STANDARD METHOD T237 cm−98に準じた方法で測定した酸化パルプスラリーのカルボン酸量は対パルプ乾燥重量1gあたり1.2meqだった。得られたスラリー60gとイオン交換水60gを家庭用ジューサーミキサーにより解繊処理を行い、スラリーが半透明なゼリー状になることを確認した後、更にイオン交換水480gを加えて解繊処理を続け、0.2%濃度のほぼ無色透明でやや粘性のある液状の酸化セルロース微小繊維の水分散液を得た。
上記製造例で得られた酸化セルロース微小繊維水分散液500gに疎水性化合物(A)として2−オキセタノン系化合物の水分散液(星光PMC株式会社製、製品名「AD1604」、固形分30%)を0.67g添加し、家庭用ジューサーミキサーで2分間混合した。混合物30gを内径9cmのプラスチックシャーレに均一に広げ、室温で1日風乾後、70℃で2時間乾燥させることで、セルロース系成形体である実施例用フィルム1を得た。
実施例1において、疎水性化合物(A)として2−オキセタノン系化合物の水分散液の代わりに脂肪酸ビスアミド系化合物の水分散液(星光PMC株式会社製、製品名「PT8104」、固形分20%)を1.0g添加した以外は実施例1と同様にしてセルロース系成形体である実施例用フィルム2を得た。
実施例1において、疎水性化合物(A)として2−オキセタノン系化合物の水分散液の代わりに置換コハク酸無水物系化合物(星光PMC株式会社製、製品名「AS1532」、固形分100%)0.2g添加した以外は実施例1と同様にしてセルロース系成形体である実施例用フィルム3を得た。
実施例1において、疎水性化合物(A)として2−オキセタノン系化合物の水分散液の代わりに置換コハク酸無水物系化合物(星光PMC株式会社製、製品名「AS1532」、固形分100%)0.2gと固着剤(B)として固形分10%硫酸アルミニウム水溶液0.5gを添加した以外は実施例1と同様にしてセルロース系成形体である実施例用フィルム4を得た。
実施例1において、疎水性化合物(A)として2−オキセタノン系化合物の水分散液の代わりに脂肪酸系化合物のロジン系化合物の水分散液(星光PMC株式会社製、製品名「AL1203」、固形分50%)0.4gと固着剤(B)として固形分10%硫酸アルミニウム水溶液0.5gを添加した以外は実施例1と同様にしてセルロース系成形体である実施例用フィルム5を得た。
製造例で得られた酸化セルロース微小繊維水分散液30gを内径9cmのプラスチックシャーレに均一に広げ、室温で1日風乾後、70℃で2時間乾燥させることで、セルロース系成形体である比較例用フィルム1を得た。
実施例用フィルム1〜5、比較例用フィルム1について、接触角測定装置(協和界面科学株式会社製FACE自動動的接触角計DCA−VZ型)を用いてフィルム表面に対するイオン交換水の接触角を測定した。なお、水滴がフィルムに接触してから1秒後の接触角を測定した。結果を下表1に示す。
Claims (3)
- セルロース長繊維を触媒としてN−オキシル化合物とハロゲン化アルカリ金属塩を用いて酸化し、これにより得られた酸化セルロース繊維を洗浄後に解繊処理して得られた酸化セルロース微小繊維の水分散液に対し、疎水性化合物(A)を添加し、次いで乾燥することによって得られ、疎水性化合物(A)が、2−オキセタノン系化合物、脂肪酸ビスアミド系化合物の少なくとも1種であり、
上記の酸化セルロース微小繊維100重量部に対し、疎水性化合物(A)0.001〜50重量部用いることを特徴とする、疎水性を有するセルロース系成形体。 - セルロース長繊維を触媒としてN−オキシル化合物とハロゲン化アルカリ金属塩を用いて酸化し、これにより得られた酸化セルロース繊維を洗浄後に解繊処理して得られた酸化セルロース微小繊維の水分散液に対し、疎水性化合物(A)を添加し、次いで乾燥することによって得られ、疎水性化合物(A)が、脂肪酸系化合物、置換無水コハク酸系化合物の少なくとも1種であり、疎水性化合物(A)の固着剤(B)が用いられ、
上記の酸化セルロース微小繊維100重量部に対し、疎水性化合物(A)0.001〜50重量部、かつ、
疎水性化合物(A)100重量部に対し、固着剤(B)100重量部以下用いることを特徴とする、疎水性を有するセルロース系成形体。 - セルロース系成形体表面への水の接触角が90°以上であることを特徴とする請求項1又は2に記載のセルロース系成形体。
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