CN105399846A - Preparation method for sulfonation modification type composite modified starch size - Google Patents
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- 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
- C08B31/02—Esters
- C08B31/06—Esters of inorganic acids
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- 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
- C08B31/16—Ether-esters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/11—Starch or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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Abstract
The invention discloses a preparation method for sulfonation modification type composite modified starch size. The preparation method comprises the following steps: carrying out cationic denaturation on starch by using a cationic etherifying agent, i.e., 3-chloro-2-hydroxypropyltrimethyl ammonium chloride, so as to prepare cation starch; then subjecting the prepared cationic starch and octenyl succinate anhydride to an esterification reaction so as to prepare cation-octenyl succinate composite modified starch; and reacting the prepared cation-octenyl succinate composite modified starch with sodium bisulfite so as to prepare the sulfonation modification type composite modified starch size. Compared with the prior art, the prepared sulfonation modification type composite modified starch size has substantially improved size film performance and enhanced adhesion on synthetic fibers like terylene, better meets requirements of sizing of warp yarns, especially sizing of synthetic fibers like terylene, and can be applied to sizing of the warp yarns of cotton, hemp, viscose, polyester/cotton, polyester/hemp, polyester/viscose and other fibers on a common warp sizing machine or high-speed warp sizing machine.
Description
Technical field
The invention belongs to the slurry preparation field that textile warp starching uses, be specifically related to a kind of preparation method of sulfonation modifying type composite modified starch slurry.
Background technology
In woven fabrics weaving process, warp thread not only will be subject to the rubbing effect repeatedly of the mechanical parts such as dropper, heald and reed, the stretching repeatedly also produced bearing each mechanism kinematic of loom, bending and shock action.Without the warp thread of starching, its surface hairiness is given prominence to, and between fiber, cohesive force is not enough, is not enough to bear the stretching repeatedly in weaving process, friction, impact and tortuous effect.Therefore, through the mechanical effect of these complexity above-mentioned, the warp thread without starching can be loose gradually, and filoplume increases, and makes warp thread inter-adhesive, causes opening unclear, forms float.And the warp structures therefore caused is loose seriously reduces the ability that warp thread resists stretching and shock action, causes warp end break, reduces loom efficiency and grey quality, even make to weave and cannot carry out time serious.Therefore, the strand of general single thread and less than No. 10 all will carry out sizing.
Sizing is one critical process in woven fabrics production process.Sizing sticks to a certain amount of slurries on warp thread exactly, after drying, form serous coat.Warp thread after starching, adheres to one deck slurries around yarn body, form tough and tensile serous coat after drying, and make filoplume paste volt, the smooth and wear resisting property of yarn is improved; Small portion in slurries immerses the nexine of yarn, makes between fiber inter-adhesive, the cohesive force between increased fiber, improves the breaking tenacity of yarn.So, can give by sizing the ability that warp thread resists external complex mechanical force, improve the weavability of warp thread, ensure that weaving process carries out smoothly.
The slurry used during sizing is a kind of indispensable special macromolecular material in woven fabrics weaving production, is to ensure the key auxiliary agent weaved and produce and normally carried out.The amount of slurry that the annual textile sizing in the whole world uses is about more than 80 ten thousand tons, and wherein Starch Size accounts for more than 70%.Therefore, improve the quality of starch size, have important practical significance.
Starch uses existing long history as slurry, and it has wide material sources, cheap, the advantage such as to be easily biodegradable.But because starch molecule remains base by the ring-type glucose containing 3 hydroxyls to form; molecular weight is higher; intermolecular hydrogen bonding is stronger; the kindliness of molecular chain is poor; sub-chain motion difficulty; the structural defect of these starch polymers itself, causes starch slurry film properties and poor to the adhesion property of the synthon such as terylene.Serous coat elongation at break as W-Gum slurry is 2.18%, abrasion are 0.617mg/cm
2, the number of times of resistance to flexing is 469 times, be 94.78N to the adhesive power of polyster fibre, work of adhesion is 0.845J, can not meet warp sizing well, the requirement of the particularly synthon starching such as terylene.
In order to overcome the above-mentioned defect of starch, and can adapt to the requirement of the synthon starchings such as terylene further, improve and stabilizing starch stock quality, expand its range of application, people have carried out a series of sex change to starch.
Starch organic ester is the one of modified starch, and the research of current people to it is more, and its applicable surface and using value are comparatively wide, is a great development direction from now on.Starch organic ester is the class modified starch utilizing the hydroxyl of starch and organic acid (acid anhydride) to be generated by esterification, comprises acetate starch, starch octenyl succinate anhydride etc.Because acetate starch introduces ester group on macromolecular chain, its space steric effect disturbs the association of hydroxyl between starch molecule, and the interaction between starch polymer is weakened, and the kindliness of molecular chain and segment mobility strengthen, serous coat toughness increases, and is conducive to improving starch slurry film properties; In addition, because ester group is similar to synthon such as terylene in polarity in structure, according to " similar compatibility " principle, between the superpolymer that polarity is identical, adhesivity is comparatively strong, is conducive to improving starch to the adhesion property of the synthon such as terylene so introduce ester group on starch polymer chain.
But acetate groups small volume, sterically hindered limited use, to improve in size film property remarkable not, people attempt introducing the size film property that longer ester group improves starch organic ester further on starch molecular chain for this reason.Starch octenyl succinate anhydride is exactly a kind of starch organic ester introducing longer ester group on starch molecular chain, and comparatively acetate groups is strong for the space steric effect of its long ester group, more can improve the size film property of starch; But long ester group causes its hydrophobicity excessively strong, thus affects the water dispersible of slurries, and then affects adhesion property.
Therefore, provide one can significantly improve starch slurry film properties, can improve the modified starch size of the synthon adhesion properties such as terylene again very necessary.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of preparation method of sulfonation modifying type composite modified starch slurry, present method is on starch polymer chain, introduce longer ester group and hydrophilic positively charged ion and sulfonic group simultaneously.Sulfonation modifying type composite modified starch slurry obtained is like this while succession starch is easily biodegradable performance, obviously can improve the size film property of starch size, and the adhesion property that can improve synthon such as terylene, meet warp sizing better, the requirement of the particularly synthon starching such as terylene.
The preparation method of a kind of sulfonation modifying type composite modified starch slurry provided by the invention, comprises the following steps:
(1) preparation of cationic starch:
Take starch, add water obtained starch milk, regulates pH to 10 ~ 12, add cationic etherifying agent, then regulate pH to 10 ~ 12 with alkaline solution, stirring reaction 4 ~ 15 hours after intensification with alkaline solution; After reaction terminates, regulate pH to 6.5 ~ 7 with acid solution; Product after filtration, washing, dry, pulverize and sieve, obtained cationic starch;
(2) preparation of positively charged ion-octenyl succinate composite modified starch:
Take cationic starch prepared by step (1), add water obtained cationic starch breast, evenly drips the ethanol solution of octenyl succinic acid anhydride under agitation, within 2 ~ 10 hours, drip off after intensification; PH to 8 ~ 9.5 are maintained with alkaline solution during dropping; After dropping terminates, regulate pH to 6.5 ~ 7 with acid solution; Product after filtration, ethanol/water solution washing, dry, pulverize and sieve, obtained positively charged ion-octenyl succinate composite modified starch;
(3) preparation of sulfonation modifying type composite modified starch slurry:
Take composite modified starch prepared by step (2), add water obtained composite modified starch breast, adds sodium bisulfite, stirring reaction 3 ~ 5 hours after intensification; After reaction terminates, add alkaline solution and regulate pH to 6.5 ~ 7; Product after filtration, ethanol/water solution washing, dry, pulverize and sieve, obtained sulfonation modifying type composite modified starch slurry.
In step (1), described starch be selected from W-Gum, wheat starch, yam starch, tapioca (flour), sweet potato starch any one; The mass concentration of starch milk is 20 ~ 40%; Described intensification is specially: be warming up to 30 ~ 50 DEG C; Alkaline solution used to be mass concentration be 1 ~ 3% sodium hydroxide solution; Cationic etherifying agent used to be mass concentration be 40 ~ 60% the 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride aqueous solution; Described cationic etherifying agent is 0.01 ~ 0.25:1 with the ratio of dry weight of starch, preferred 0.02 ~ 0.12:1; Acid solution used to be mass concentration be 1 ~ 3% hydrochloric acid soln.
Further, in step (2), the mass concentration of cationic starch breast is 20 ~ 40%; Described intensification is specially: be warming up to 25 ~ 45 DEG C; The volumetric concentration of the ethanol solution of described octenyl succinic acid anhydride is 12.5 ~ 25%; Octenyl succinic acid anhydride is 0.008 ~ 0.20:1 with the ratio of cationic starch dry weight, preferred 0.017 ~ 0.15:1; Alkaline solution mass concentration used is the sodium hydroxide solution of 1 ~ 3%; Acid solution used to be mass concentration be 1 ~ 3% hydrochloric acid soln.
Further, in step (3), the mass concentration of composite modified starch breast is 20 ~ 40%; Described intensification is specially: be warming up to 30 ~ 50 DEG C; The sodium bisulfite added is 4 ~ 7 times of octenyl succinate matrix amount in composite modified starch; Alkaline solution used to be mass concentration be 1 ~ 3% sodium hydroxide solution.
The preparation method of sulfonation modifying type composite modified starch slurry provided by the invention, reaction principle is as follows:
Described sulfonation modifying type composite modified starch slurry chemical structural formula is:
Wherein n is the polymerization degree, n=200 ~ 6000.
Preparation method provided by the invention, first carries out positively charged ion sex change with cationic etherifying agent 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride to starch, obtained cationic starch; Then obtained cationic starch is carried out esterification with octenyl succinic acid anhydride again, obtained positively charged ion-octenyl succinate composite modified starch; Finally obtained positively charged ion-octenyl succinate composite modified starch and sodium bisulfite are reacted, obtained sulfonation modifying type composite modified starch slurry.Existing longer ester group in sulfonation modifying type composite modified starch slurry molecule obtained like this, there are again hydrophilic positively charged ion and sulfonic group, it is while succession starch is easily biodegradable performance, obviously can improve the size film property of starch size, and the adhesion property that can improve synthon such as terylene, meet the requirement of the warp sizing particularly synthon starching such as terylene better.
Beneficial effect of the present invention:
(1) existing longer ester group in the sulfonation modifying type composite modified starch slurry molecule that obtains of the present invention, there are again positively charged ion and sulfonic group, particularly ester group volume is larger for these groups, space steric effect is remarkable, weaken the association of hydroxyl between starch polymer, interaction between starch polymer weakens, and the kindliness of molecular chain and segment mobility strengthen, and serous coat toughness increases; Simultaneously, the hydrophilic cationic introduced and sulfonic group make serous coat water absorbability strengthen, play the effect of " physical plasticizing ", the toughness of further raising serous coat, therefore the serous coat elongation at break of sulfonation modifying type composite modified starch slurry increases, abrasion reduce, and the number of times of resistance to flexing increases, and significantly improves the size film property of starch size.As shown in the Examples, the serous coat elongation at break of W-Gum slurry is 2.18%, wears away as 0.617mg/cm
2, the number of times of resistance to flexing is 469 times.And degree ofacationic substitution is 0.021, ester group substitution value is the serous coat elongation at break of the sulfonation modifying type composite modified starch slurry of 0.018 is 3.29%, abrasion are 0.422mg/cm
2, the number of times of resistance to flexing is 1072 times; Degree ofacationic substitution is 0.034, and ester group substitution value is the serous coat elongation at break of the sulfonation modifying type composite modified starch slurry of 0.027 is 3.98%, abrasion are 0.351mg/cm
2, the number of times of resistance to flexing is 1277 times.
(2) ester group introduced on starch polymer chain is similar to polyster fibre in polarity in structure, according to " similar compatibility " principle, between the superpolymer that polarity is identical, adhesivity is stronger, so introduce ester group on starch polymer chain, be conducive to improving starch size to the adhesion property of polyster fibre; Meanwhile, the hydrophilic cationic of introducing and sulfonic group improve the water dispersible of starch, overcome the defect of starch octenyl succinate anhydride, are conducive to slurries soaking and sprawling at fiber surface, improve the adhesion property of starch size to fiber.As shown in the Examples, W-Gum slurry is 94.78N to the adhesive power of polyster fibre, and work of adhesion is 0.845J.And degree ofacationic substitution is 0.021, ester group substitution value be 0.018 sulfonation modifying type composite modified starch slurry be 130.24N to the adhesive power of polyster fibre, work of adhesion is 1.187J; Degree ofacationic substitution is 0.034, ester group substitution value be 0.027 sulfonation modifying type composite modified starch slurry be 139.50N to the adhesive power of polyster fibre, work of adhesion is 1.276J.
Compared with prior art, sulfonation modifying type composite modified starch slurry prepared by the present invention, significantly can improve the size film property of starch size, and can improve synthon adhesion properties such as terylene, meet the requirement of the warp sizing particularly synthon starching such as terylene better; Still keep graininess, there is the feature of use, convenient transportation; Can at general slasher sizing machine or high speed warp sizing machine to cotton, fiber crops, viscose glue, wash/cotton, wash/fiber crops, the warp thread of fiber such as wash/glue and carry out starching.
Embodiment
Comparative example 1
Take W-Gum 100 grams (dry weight), the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 500mL, load onto whipping appts, then be placed in water-bath and be warming up to 35 DEG C, evenly dripping volumetric concentration is under agitation 25% ethanol solution containing 4 grams of octenyl succinic acid anhydrides, within 3 hours, drips off; During dropping, mass concentration is sodium hydroxide solution maintenance pH to 8.5 ~ 9 of 3%; After dropping terminates, regulate pH to 6.5 ~ 7 with the hydrochloric acid soln that mass concentration is 3%; Product after filtration, by volumetric concentration be 70% aqueous ethanolic solution wash 3 times, 45 DEG C and dry to constant weight, pulverize and sieve, obtained starch octenyl succinate anhydride.The ester group substitution value of product is DS=0.020, size film property and to the adhesion property of polyster fibre in table 1.
Embodiment 1
A preparation method for sulfonation modifying type composite modified starch slurry, comprises the following steps:
(1) preparation of cationic starch:
Take W-Gum 300 grams (dry weight), the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 1000mL, load onto whipping appts, then be placed in water-bath and be warming up to 50 DEG C, pH to 11 ~ 11.5 are regulated with the sodium hydroxide solution that mass concentration is 3%, adding mass concentration is 50% aqueous solution containing 12 grams of cationic etherifying agent 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, then regulates pH to 11 ~ 11.5 with the sodium hydroxide solution that mass concentration is 3%; Stirring reaction, after 8 hours, regulates pH to 6.5 ~ 7 with the hydrochloric acid soln that mass concentration is 3%; Product after filtration, wash 3 times, 45 DEG C with water and dry to constant weight, pulverize and sieve, obtained cationic starch.
(2) preparation of positively charged ion-octenyl succinate composite modified starch:
Take the cationic starch 200 grams (dry weight) that step (1) is obtained, the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 1000mL, load onto whipping appts, then be placed in water-bath and be warming up to 35 DEG C, evenly dripping volumetric concentration is under agitation 25% ethanol solution containing 8 grams of octenyl succinic acid anhydrides, within 3 hours, drips off; During dropping, mass concentration is sodium hydroxide solution maintenance pH to 8.5 ~ 9 of 3%; After dropping terminates, regulate pH to 6.5 ~ 7 with the hydrochloric acid soln that mass concentration is 3%; Product after filtration, by volumetric concentration be 70% aqueous ethanolic solution wash 3 times, 45 DEG C and dry to constant weight, pulverize and sieve, obtained positively charged ion-octenyl succinate composite modified starch.
(3) preparation of sulfonation modifying type composite modified starch slurry:
Take the composite modified starch 100 grams (dry weight) that step (2) is obtained, the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 500mL, load onto whipping appts, then be placed in water-bath and be warming up to 40 DEG C, add the sodium bisulfite of octenyl succinate matrix amount in 5 times of composite modified starchs; Stirring reaction, after 4 hours, regulates pH to 6.5 ~ 7 with the sodium hydroxide solution that mass concentration is 1%; Product after filtration, by volumetric concentration be 70% aqueous ethanolic solution wash 3 times, 45 DEG C and dry to constant weight, pulverize and sieve, obtained sulfonation modifying type composite modified starch slurry.The degree ofacationic substitution of product is DS=0.021, and ester group substitution value is DS=0.018, size film property and to the adhesion property of polyster fibre in table 1.
Comparative example 2
Take W-Gum 100 grams (dry weight), the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 500mL, load onto whipping appts, then be placed in water-bath and be warming up to 35 DEG C, evenly dripping volumetric concentration is under agitation 25% ethanol solution containing 8 grams of octenyl succinic acid anhydrides, within 3 hours, drips off; During dropping, mass concentration is sodium hydroxide solution maintenance pH to 8.5 ~ 9 of 3%; After dropping terminates, regulate pH to 6.5 ~ 7 with the hydrochloric acid soln that mass concentration is 3%; Product after filtration, by volumetric concentration be 70% aqueous ethanolic solution wash 3 times, 45 DEG C and dry to constant weight, pulverize and sieve, obtained starch octenyl succinate anhydride.The ester group substitution value of product is DS=0.029, size film property and to the adhesion property of polyster fibre in table 1.
Embodiment 2
A preparation method for sulfonation modifying type composite modified starch slurry, comprises the following steps:
(1) preparation of cationic starch:
Take W-Gum 300 grams (dry weight), the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 1000mL, load onto whipping appts, then be placed in water-bath and be warming up to 50 DEG C, pH to 11 ~ 11.5 are regulated with the sodium hydroxide solution that mass concentration is 3%, adding mass concentration is 50% aqueous solution containing 24 grams of cationic etherifying agent 3-chloro-2-hydroxypropyl-trimethyl ammonium chlorides, then regulates pH to 11 ~ 11.5 with the sodium hydroxide solution that mass concentration is 3%; Stirring reaction, after 8 hours, regulates pH to 6.5 ~ 7 with the hydrochloric acid soln that mass concentration is 3%; Product after filtration, wash 3 times, 45 DEG C with water and dry to constant weight, pulverize and sieve, obtained cationic starch.
(2) preparation of positively charged ion-octenyl succinate composite modified starch:
Take the cationic starch 200 grams (dry weight) that step (1) is obtained, the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 1000mL, load onto whipping appts, then be placed in water-bath and be warming up to 35 DEG C, evenly dripping volumetric concentration is under agitation 25% ethanol solution containing 16 grams of octenyl succinic acid anhydrides, within 3 hours, drips off; During dropping, mass concentration is sodium hydroxide solution maintenance pH to 8.5 ~ 9 of 3%; After dropping terminates, regulate pH to 6.5 ~ 7 with the hydrochloric acid soln that mass concentration is 3%; Product after filtration, by volumetric concentration be 70% aqueous ethanolic solution wash 3 times, 45 DEG C and dry to constant weight, pulverize and sieve, obtained positively charged ion-octenyl succinate composite modified starch.
(3) preparation of sulfonation modifying type composite modified starch slurry:
Take the composite modified starch 100 grams (dry weight) that step (2) is obtained, the obtained mass concentration that adds water is the starch milk of 40%, again starch milk is moved in the four-hole boiling flask of 500mL, load onto whipping appts, then be placed in water-bath and be warming up to 40 DEG C, add the sodium bisulfite of octenyl succinate matrix amount in 5 times of composite modified starchs; Stirring reaction, after 4 hours, regulates pH to 6.5 ~ 7 with the sodium hydroxide solution that mass concentration is 1%; Product after filtration, by volumetric concentration be 70% aqueous ethanolic solution wash 3 times, 45 DEG C and dry to constant weight, pulverize and sieve, obtained sulfonation modifying type composite modified starch slurry.The degree ofacationic substitution of product is DS=0.034, and ester group substitution value is DS=0.027, size film property and to the adhesion property of polyster fibre in table 1.
The size film property of table 1. starch size and the adhesion property to polyster fibre
Claims (10)
1. a preparation method for sulfonation modifying type composite modified starch slurry, is characterized in that, described preparation method comprises the following steps:
(1) preparation of cationic starch:
Take starch, add water obtained starch milk, regulates pH to 10 ~ 12, add cationic etherifying agent, then regulate pH to 10 ~ 12 with alkaline solution, stirring reaction 4 ~ 15 hours after intensification with alkaline solution; After reaction terminates, regulate pH to 6.5 ~ 7 with acid solution; Product after filtration, washing, dry, pulverize and sieve, obtained cationic starch;
(2) preparation of positively charged ion-octenyl succinate composite modified starch:
Take cationic starch prepared by step (1), add water obtained cationic starch breast, evenly drips the ethanol solution of octenyl succinic acid anhydride under agitation, within 2 ~ 10 hours, drip off after intensification; PH to 8 ~ 9.5 are maintained with alkaline solution during dropping; After dropping terminates, regulate pH to 6.5 ~ 7 with acid solution; Product after filtration, ethanol/water solution washing, dry, pulverize and sieve, obtained positively charged ion-octenyl succinate composite modified starch;
(3) preparation of sulfonation modifying type composite modified starch slurry:
Take composite modified starch prepared by step (2), add water obtained composite modified starch breast, adds sodium bisulfite, stirring reaction 3 ~ 5 hours after intensification; After reaction terminates, add alkaline solution and regulate pH to 6.5 ~ 7; Product after filtration, ethanol/water solution washing, dry, pulverize and sieve, obtained sulfonation modifying type composite modified starch slurry.
2. preparation method according to claim 1, is characterized in that, starch described in step (1) be selected from W-Gum, wheat starch, yam starch, tapioca (flour), sweet potato starch any one.
3. preparation method according to claim 1 and 2, is characterized in that, heating up described in step (1) is specially: be warming up to 30 ~ 50 DEG C.
4. preparation method according to claim 1 and 2, is characterized in that, cationic etherifying agent used in step (1) to be mass concentration be 40 ~ 60% the 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride aqueous solution.
5. preparation method according to claim 1 and 2, is characterized in that, described in step (1), cationic etherifying agent is 0.01 ~ 0.25:1 with the ratio of dry weight of starch.
6. preparation method according to claim 1 and 2, is characterized in that, heating up described in step (2) is specially: be warming up to 25 ~ 45 DEG C.
7. preparation method according to claim 1 and 2, is characterized in that, described in step (2), the volumetric concentration of the ethanol solution of octenyl succinic acid anhydride is 12.5 ~ 25%.
8. the preparation method according to claim 1 or 7, is characterized in that, described in step (2), octenyl succinic acid anhydride is 0.008 ~ 0.20:1 with the ratio of cationic starch dry weight.
9. preparation method according to claim 1 and 2, is characterized in that, heating up described in step (3) is specially: be warming up to 30 ~ 50 DEG C.
10. the preparation method according to claim 1 or 9, is characterized in that, the sodium bisulfite added in step (3) is 4 ~ 7 times of octenyl succinate matrix amount in composite modified starch.
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Cited By (4)
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| CN107869056A (en) * | 2017-11-30 | 2018-04-03 | 天峨县平昌生态农业有限公司 | A kind of preparation method of preparation method for sizing agent cassava modified starch |
| CN109232752A (en) * | 2018-09-19 | 2019-01-18 | 江南大学 | A kind of amphipathic modified starch size of grease and preparation method thereof |
| CN111234041A (en) * | 2020-02-27 | 2020-06-05 | 安徽工程大学 | Acidolysis-crosslinking-sulfonation composite modified starch slurry and preparation method thereof |
| CN112111018A (en) * | 2020-09-25 | 2020-12-22 | 高伟健 | Preparation method of medium-temperature starch slurry |
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