CA2462053A1 - Starch networks as absorbent or superabsorbent materials and their preparation by extrusion - Google Patents
Starch networks as absorbent or superabsorbent materials and their preparation by extrusion Download PDFInfo
- Publication number
- CA2462053A1 CA2462053A1 CA 2462053 CA2462053A CA2462053A1 CA 2462053 A1 CA2462053 A1 CA 2462053A1 CA 2462053 CA2462053 CA 2462053 CA 2462053 A CA2462053 A CA 2462053A CA 2462053 A1 CA2462053 A1 CA 2462053A1
- Authority
- CA
- Canada
- Prior art keywords
- starch
- absorbent
- absorbent material
- sodium
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002250 absorbent Substances 0.000 title claims abstract 35
- 230000002745 absorbent Effects 0.000 title claims abstract 33
- 239000000463 material Substances 0.000 title claims abstract 22
- 229920002472 Starch Polymers 0.000 title claims abstract 21
- 235000019698 starch Nutrition 0.000 title claims abstract 20
- 239000008107 starch Substances 0.000 title claims abstract 18
- 238000001125 extrusion Methods 0.000 title 1
- 238000002360 preparation method Methods 0.000 title 1
- 229920000945 Amylopectin Polymers 0.000 claims abstract 4
- 239000000203 mixture Substances 0.000 claims 19
- 238000000034 method Methods 0.000 claims 13
- 229920001282 polysaccharide Polymers 0.000 claims 9
- 239000005017 polysaccharide Substances 0.000 claims 9
- 150000004804 polysaccharides Chemical class 0.000 claims 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 6
- UGTZMIPZNRIWHX-UHFFFAOYSA-K sodium trimetaphosphate Chemical compound [Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)O1 UGTZMIPZNRIWHX-UHFFFAOYSA-K 0.000 claims 6
- -1 acrylic ester Chemical class 0.000 claims 5
- 239000003431 cross linking reagent Substances 0.000 claims 5
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims 5
- 239000003513 alkali Substances 0.000 claims 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims 4
- 235000019832 sodium triphosphate Nutrition 0.000 claims 4
- 239000004971 Cross linker Substances 0.000 claims 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims 3
- 239000000835 fiber Substances 0.000 claims 3
- 239000002245 particle Substances 0.000 claims 3
- 150000003839 salts Chemical class 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 3
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 claims 2
- 229920002261 Corn starch Polymers 0.000 claims 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 claims 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims 2
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims 2
- 235000019759 Maize starch Nutrition 0.000 claims 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 claims 2
- 229920000297 Rayon Polymers 0.000 claims 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 2
- 230000032683 aging Effects 0.000 claims 2
- XENVCRGQTABGKY-ZHACJKMWSA-N chlorohydrin Chemical compound CC#CC#CC#CC#C\C=C\C(Cl)CO XENVCRGQTABGKY-ZHACJKMWSA-N 0.000 claims 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims 2
- AFOSIXZFDONLBT-UHFFFAOYSA-N divinyl sulfone Chemical compound C=CS(=O)(=O)C=C AFOSIXZFDONLBT-UHFFFAOYSA-N 0.000 claims 2
- GKIPXFAANLTWBM-UHFFFAOYSA-N epibromohydrin Chemical compound BrCC1CO1 GKIPXFAANLTWBM-UHFFFAOYSA-N 0.000 claims 2
- 229940015043 glyoxal Drugs 0.000 claims 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims 2
- 229920001223 polyethylene glycol Polymers 0.000 claims 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims 2
- 239000000243 solution Substances 0.000 claims 2
- 229920000247 superabsorbent polymer Polymers 0.000 claims 2
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 claims 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- UVIDMSMLNGZCSV-UHFFFAOYSA-N 2-ethenylguanidine Chemical compound NC(=N)NC=C UVIDMSMLNGZCSV-UHFFFAOYSA-N 0.000 claims 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 claims 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims 1
- 244000247812 Amorphophallus rivieri Species 0.000 claims 1
- 235000001206 Amorphophallus rivieri Nutrition 0.000 claims 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims 1
- 229920002907 Guar gum Polymers 0.000 claims 1
- 240000005979 Hordeum vulgare Species 0.000 claims 1
- 235000007340 Hordeum vulgare Nutrition 0.000 claims 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 claims 1
- 206010021639 Incontinence Diseases 0.000 claims 1
- 229920002752 Konjac Polymers 0.000 claims 1
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims 1
- 229920000161 Locust bean gum Polymers 0.000 claims 1
- 229920000433 Lyocell Polymers 0.000 claims 1
- 240000003183 Manihot esculenta Species 0.000 claims 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims 1
- 239000004677 Nylon Substances 0.000 claims 1
- 244000134552 Plantago ovata Species 0.000 claims 1
- 235000003421 Plantago ovata Nutrition 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 241001494501 Prosopis <angiosperm> Species 0.000 claims 1
- 235000001560 Prosopis chilensis Nutrition 0.000 claims 1
- 235000014460 Prosopis juliflora var juliflora Nutrition 0.000 claims 1
- 239000009223 Psyllium Substances 0.000 claims 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 1
- 240000006394 Sorghum bicolor Species 0.000 claims 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims 1
- 241000736285 Sphagnum Species 0.000 claims 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims 1
- 229920002486 Waxy potato starch Polymers 0.000 claims 1
- 239000000908 ammonium hydroxide Substances 0.000 claims 1
- 235000011114 ammonium hydroxide Nutrition 0.000 claims 1
- 125000000129 anionic group Chemical group 0.000 claims 1
- 229920001586 anionic polysaccharide Polymers 0.000 claims 1
- 150000004836 anionic polysaccharides Chemical class 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 235000003704 aspartic acid Nutrition 0.000 claims 1
- WPJWIROQQFWMMK-UHFFFAOYSA-L beryllium dihydroxide Chemical compound [Be+2].[OH-].[OH-] WPJWIROQQFWMMK-UHFFFAOYSA-L 0.000 claims 1
- 229910001865 beryllium hydroxide Inorganic materials 0.000 claims 1
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 239000001768 carboxy methyl cellulose Substances 0.000 claims 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims 1
- 229920001525 carrageenan Polymers 0.000 claims 1
- 235000010418 carrageenan Nutrition 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- 229920002678 cellulose Polymers 0.000 claims 1
- 229920002301 cellulose acetate Polymers 0.000 claims 1
- GDTRAYDPXKZJGD-UHFFFAOYSA-N dichlorophosphoryl hypochlorite Chemical compound ClOP(Cl)(Cl)=O GDTRAYDPXKZJGD-UHFFFAOYSA-N 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 235000020765 fenugreek extract Nutrition 0.000 claims 1
- 235000013305 food Nutrition 0.000 claims 1
- 239000000665 guar gum Substances 0.000 claims 1
- 235000010417 guar gum Nutrition 0.000 claims 1
- 229960002154 guar gum Drugs 0.000 claims 1
- 239000000252 konjac Substances 0.000 claims 1
- 235000010485 konjac Nutrition 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 235000010420 locust bean gum Nutrition 0.000 claims 1
- 239000000711 locust bean gum Substances 0.000 claims 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims 1
- 239000000347 magnesium hydroxide Substances 0.000 claims 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 150000002688 maleic acid derivatives Chemical class 0.000 claims 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 claims 1
- DCUFMVPCXCSVNP-UHFFFAOYSA-N methacrylic anhydride Chemical compound CC(=C)C(=O)OC(=O)C(C)=C DCUFMVPCXCSVNP-UHFFFAOYSA-N 0.000 claims 1
- 239000000178 monomer Substances 0.000 claims 1
- 229920001778 nylon Polymers 0.000 claims 1
- 239000011236 particulate material Substances 0.000 claims 1
- 229920001277 pectin Polymers 0.000 claims 1
- 239000001814 pectin Substances 0.000 claims 1
- 235000010987 pectin Nutrition 0.000 claims 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 claims 1
- 229920000747 poly(lactic acid) Polymers 0.000 claims 1
- 229920001281 polyalkylene Polymers 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 235000011056 potassium acetate Nutrition 0.000 claims 1
- 239000011736 potassium bicarbonate Substances 0.000 claims 1
- 235000015497 potassium bicarbonate Nutrition 0.000 claims 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims 1
- 229910000027 potassium carbonate Inorganic materials 0.000 claims 1
- 235000011181 potassium carbonates Nutrition 0.000 claims 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims 1
- 229910000160 potassium phosphate Inorganic materials 0.000 claims 1
- 235000011009 potassium phosphates Nutrition 0.000 claims 1
- ARJOQCYCJMAIFR-UHFFFAOYSA-N prop-2-enoyl prop-2-enoate Chemical compound C=CC(=O)OC(=O)C=C ARJOQCYCJMAIFR-UHFFFAOYSA-N 0.000 claims 1
- 229940070687 psyllium Drugs 0.000 claims 1
- 239000002964 rayon Substances 0.000 claims 1
- 229940100486 rice starch Drugs 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 235000015424 sodium Nutrition 0.000 claims 1
- 239000001632 sodium acetate Substances 0.000 claims 1
- 235000017281 sodium acetate Nutrition 0.000 claims 1
- 229910000029 sodium carbonate Inorganic materials 0.000 claims 1
- 235000017550 sodium carbonate Nutrition 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- 239000001488 sodium phosphate Substances 0.000 claims 1
- 229910000162 sodium phosphate Inorganic materials 0.000 claims 1
- 235000011008 sodium phosphates Nutrition 0.000 claims 1
- 239000000213 tara gum Substances 0.000 claims 1
- 235000010491 tara gum Nutrition 0.000 claims 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims 1
- 229940100445 wheat starch Drugs 0.000 claims 1
- 229920001285 xanthan gum Polymers 0.000 claims 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B35/00—Preparation of derivatives of amylopectin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/28—Polysaccharides or their derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/003—Crosslinking of starch
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Veterinary Medicine (AREA)
- Biochemistry (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Hematology (AREA)
- Organic Chemistry (AREA)
- Epidemiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The present invention relates an absorbent material consisting of a molecular network of starch molecules, the starch molecules comprising an amylopectin content of at least 90% (w/w). The molecular network can either be comprised of self-entangled starches or cross-linked starches.
Claims (35)
1. An absorbent material consisting of a molecular network of starch molecules, the starch molecules comprising at least 90% (w/w) amylopectin.
2. The absorbent material of claim 1, wherein the molecular network comprises self-entangled starch.
3. The absorbent material of claim 1, wherein the molecular network comprises cross-linked starch.
4. The absorbent material of claims 2 and 3, wherein said absorbent material is in particulate form.
5. The absorbent material of claim 4, wherein said particulate form comprises particles ranging in size from 89 to 589 microns.
6. The absorbent material of claim 5, having a centrifuge retention capacity of at least 10 g/g and a free swell capacity of at least 13 g/g.
7. The absorbent material of claims 2 and 3, wherein the molecular network is produced from a waxy starch.
8. The absorbent material of claim 7, wherein said waxy starch is selected from the group consisting of waxy maize starch, waxy wheat starch, waxy rice starch, waxy sorghum starch, waxy potato starch, waxy cassava starch, waxy barley starch and mixture thereof.
9. The absorbent material of claim 8, wherein said waxy starch is waxy maize starch.
10. The absorbent material of claim 3, wherein said cross-linked starch is cross-linked with a cross-linker selected from the group consisting of sodium trimetaphosphate, sodium tripolyphosphate, phosphorous oxychloride, phosphoryl chloride, epichlorohydrin, divinyl sulfone, ethylene glycol diglycidyl ether, chlorohydrin, bromohydrin, N,N'-Methylenebisacrylamide, alkylenebisacrylamides, diepoxyalkanes, diglycidyl ethers, glyoxal, glutaraldehyde, dialdehydes, activated polyethylene glycols, and mixture thereof.
11. The absorbent material of claim 10, wherein the cross-linker is selected from the group consisting of phosphorous oxychloride, sodium trimetaphosphate, sodium tripolyphosphate and mixtures thereof.
12. The absorbent material of claim 11, wherein the cross-linker is sodium trimetaphosphate.
13. A process for producing an absorbent material as defined in claim 2, comprising the steps of:
(a) mixing a starch comprising at least 90% amylopectin with water to produce a paste;
(b) feeding the paste into an extruder to produce an extrudate;
(c) aging the extrudate; and (d) grinding the extrudate.
(a) mixing a starch comprising at least 90% amylopectin with water to produce a paste;
(b) feeding the paste into an extruder to produce an extrudate;
(c) aging the extrudate; and (d) grinding the extrudate.
14. A process for producing an absorbent material as defined in claim 3, comprising the steps of:
(a) mixing a starch comprising at least 90 % amylopectin with water, an alkali and a cross-linking agent to produce a paste (b) feeding the paste into an extruder to produce an extrudate;
(c) aging the extrudate; and (d) grinding the extrudate.
(a) mixing a starch comprising at least 90 % amylopectin with water, an alkali and a cross-linking agent to produce a paste (b) feeding the paste into an extruder to produce an extrudate;
(c) aging the extrudate; and (d) grinding the extrudate.
15. A process as defined in claim 14, the paste comprising from 0.001 to 2.0% (w/w) of the crosslinking agent.
16. A process as defined in claim 14, the paste comprising from 0.001 to 2.0% (w/w) of the alkali.
17. A process as defined in claims 13 and 14, the starch-based paste having a moisture content ranging from 25 % to 45 %.
18. A process, as defined in claim 15, wherein the cross-linking agent is being selected from the group consisting of sodium trimetaphosphate, sodium tripolyphosphate, phosphoryl oxychloride, phosphorous chloride, epichlorohydrin, divinyl sulfone, chlorohydrin, bromohydrin, N,N'-Methylenebisacrylamide, alkylenebisacrylamides, ethylene glycol diglycidyl ether, diepoxyalkanes, diglycidyl ethers, glyoxal, glutaraldehyde, dialdehydes, activated polyethylene glycols and mixtures thereof.
19. A process as defined in claim 18, wherein the cross-linking agent is being selected from the group consisting of sodium trimetaphosphate, sodium tripolyphosphates and phosphorous oxychloride.
20. A process as defined in claim 19, wherein the cross-linking agent is sodium trimetaphosphate.
21. A process as defined in claim 16, wherein the alkali is being selected from the group consisting of sodium hydroxide, potassium hydroxide, lithium hydroxide, magnesium hydroxide, calcium hydroxide, beryllium hydroxide, ammonium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium acetate, potassium acetate, sodium phosphate, sodium hydrogenophosphate, potassium phosphate, potassium hydrogenophosphate and mixtures thereof.
22. A process, as defined in claim 18, wherein the alkali is sodium hydroxide.
23. A process as defined in claims 13 and 14, wherein the extrudate has a temperature of at least 130°C.
24. A process as defined in claim 23 wherein the extrudate is aged at least 48 hours at a temperature of at least 50°C.
25 25. A process as defined in claims 13 and 14, wherein the grinding produces a particulate material comprising particles ranging in size from 89 µm to 589 µm.
26. An absorbent mixture comprising:
a) an absorbent material as defined in claim 1; and b) a co-absorbent material.
a) an absorbent material as defined in claim 1; and b) a co-absorbent material.
27. An absorbent mixture as defined in claim 26, wherein the absorbent material comprises particles ranging in size from 89 to 589 microns.
28. An absorbent mixture as defined in claim 27, wherein the co-absorbent material is selected from the group consisting of synthetic superabsorbent polymers, mannose containing polysaccharides, ionic polysaccharides, fibers and mixtures thereof.
29. An absorbent mixture as defined in claim 28, wherein the synthetic superabsorbent polymers are obtained by polymerization of monomers selected from the group consisting of acrylic acid, acrlylate salts, acrylic ester, acrylic anhydride, methacrylic acid, methacrylate salts, methacylic esters, methacrylic anhydride, maleic anhydride, maleic salts, maleate esters, acrylamide, acrylonitrile, vinyl alcohol, vinyl pyrrolidone, vinyl acetate, vinyl guanidine, aspartic acid, aspartic salts and mixtures thereof.
30. An absorbent mixture as defined in claim 28, wherein the mannose containing polysaccharides are selected from the group consisting of guar gum, tara gum, locust bean gum, konjac, mesquite gum, psyllium extracts, fenugreek extracts and mixtures thereof.
31. An absorbent mixture as defined in claim 28, wherein the ionic polysaccharides comprise anionic and cationic polysaccharides.
32. An absorbent mixture as defined in claim 31, wherein the anionic polysaccharides are selected from the group consisting of carboxyalkyl polysaccharides, oxidized polysaccharides, sulphated polysaccharides, polysaccharides half-esters, carboxymethyl cellulose, carboxymethyl starch, xanthan, carrageenans, pectin and mixtures thereof.
33. An absorbent mixture as defined in claim 28, wherein the fibers are selected from the group consisting of cellulose, viscose, rayon, cellulose acetate, Nylon TM, polyalkylenes, polyethylene, polypropylene, bi-component fibers, polyesters, polylactides, polypropanediols, Lyocell TM, sphagnum and mixtures thereof.
34. Use of the absorbent mixture of claim 27 in the manufacture of an absorbent product for absorbing liquids selected from the group consisting of aqueous solutions, water, physiological solutions and saline solutions.
35. The use as defined in claim 34, wherein the absorbent product is selected from the group consisting of diapers, incontinence articles, sanitary napkins, water-storing materials, absorbent paper products, surgical absorbents, pet litter, bandages, wound dressings and food absorbent pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2462053A CA2462053C (en) | 2003-03-26 | 2004-03-26 | Starch networks as absorbent or superabsorbent materials and their preparation by extrusion |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2,423,712 | 2003-03-26 | ||
| CA002423712A CA2423712A1 (en) | 2003-03-26 | 2003-03-26 | Crosslinked amylopectin by reactive extrusion and its use as an absorbent or superabsorbent material |
| CA2462053A CA2462053C (en) | 2003-03-26 | 2004-03-26 | Starch networks as absorbent or superabsorbent materials and their preparation by extrusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2462053A1 true CA2462053A1 (en) | 2004-09-26 |
| CA2462053C CA2462053C (en) | 2011-05-31 |
Family
ID=33098721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2462053A Expired - Lifetime CA2462053C (en) | 2003-03-26 | 2004-03-26 | Starch networks as absorbent or superabsorbent materials and their preparation by extrusion |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2462053C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037082A1 (en) | 2006-09-25 | 2008-04-03 | Archer-Daniels-Midland Company | Superabsorbent surface-treated carboxyalkylated polysaccharides and process for producing same |
| US8012907B2 (en) | 2004-09-14 | 2011-09-06 | Archer Daniels Midland Company | Guanidinated polysaccharides, their use as absorbents and process for producing same |
| US8486854B2 (en) | 2003-09-29 | 2013-07-16 | Archer Daniels Midland Company | Polysaccharide phyllosilicate absorbent or superabsorbent nanocomposite materials |
| US9547000B2 (en) | 2012-08-29 | 2017-01-17 | 7905122 Canada Inc. | Chromogenic absorbent material for animal litter and related chromogenic solution |
| US10175231B2 (en) | 2014-02-27 | 2019-01-08 | 7905122 Canada Inc. | Chromogenic absorbent material for animal litter |
| US10583420B2 (en) | 2014-10-01 | 2020-03-10 | 7905122 Canada Inc. | Process and apparatus for manufacturing water-absorbing material and use in cat litter |
| US11013823B2 (en) | 2016-04-01 | 2021-05-25 | 7905122 Canada Inc. | Water-absorbing material and uses thereof |
-
2004
- 2004-03-26 CA CA2462053A patent/CA2462053C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8486854B2 (en) | 2003-09-29 | 2013-07-16 | Archer Daniels Midland Company | Polysaccharide phyllosilicate absorbent or superabsorbent nanocomposite materials |
| US8012907B2 (en) | 2004-09-14 | 2011-09-06 | Archer Daniels Midland Company | Guanidinated polysaccharides, their use as absorbents and process for producing same |
| WO2008037082A1 (en) | 2006-09-25 | 2008-04-03 | Archer-Daniels-Midland Company | Superabsorbent surface-treated carboxyalkylated polysaccharides and process for producing same |
| US8461129B2 (en) | 2006-09-25 | 2013-06-11 | Archer Daniels Midland Company | Superabsorbent surface-treated carboxyalkylated polysaccharides and process for producing same |
| AU2007302586B2 (en) * | 2006-09-25 | 2013-06-27 | Archer-Daniels-Midland Company | Superabsorbent surface-treated carboxyalkylated polysaccharides and process for producing same |
| CN101541836B (en) * | 2006-09-25 | 2015-04-08 | 阿彻-丹尼尔斯-米德兰德公司 | Superabsorbent surface-treated carboxyalkylated polysaccharides and process for producing same |
| US9547000B2 (en) | 2012-08-29 | 2017-01-17 | 7905122 Canada Inc. | Chromogenic absorbent material for animal litter and related chromogenic solution |
| US10175231B2 (en) | 2014-02-27 | 2019-01-08 | 7905122 Canada Inc. | Chromogenic absorbent material for animal litter |
| US10908150B2 (en) | 2014-02-27 | 2021-02-02 | 7905122 Canada Inc. | Chromogenic absorbent material for animal litter |
| US10583420B2 (en) | 2014-10-01 | 2020-03-10 | 7905122 Canada Inc. | Process and apparatus for manufacturing water-absorbing material and use in cat litter |
| US11167265B2 (en) | 2014-10-01 | 2021-11-09 | 7905122 Canada Inc. | Process and apparatus for manufacturing water-absorbing material and use in cat litter |
| US11013823B2 (en) | 2016-04-01 | 2021-05-25 | 7905122 Canada Inc. | Water-absorbing material and uses thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2462053C (en) | 2011-05-31 |
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