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Method for preparing starch-poly(butyl acrylate) grafted starch

A technology of polybutyl acrylate and butyl acrylate, which is applied in the field of preparing starch-polybutyl acrylate grafted starch, can solve the problems of low grafting rate and achieve the effect of increasing grafting rate

Active Publication Date: 2015-11-04
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of this invention is to provide a method for preparing starch-polybutylacrylate grafted starch, which solves the problem of low grafting rate when the existing dry method is used to prepare grafted starch slurry, and obtains grafted starch with high grafting rate. Amylopectin size

Method used

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  • Method for preparing starch-poly(butyl acrylate) grafted starch
  • Method for preparing starch-poly(butyl acrylate) grafted starch
  • Method for preparing starch-poly(butyl acrylate) grafted starch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Prepare starch-polybutylacrylate grafted starch, implement according to the following steps:

[0043] Step 1: Weigh starch, butyl acrylate, ammonium persulfate, and N,N-dimethylformamide respectively, wherein the mass of butyl acrylate is 25% of the mass of starch, the mass of ammonium persulfate is 1.33% of the mass of starch, The amount of N,N-dimethylformamide is 5% of starch quality;

[0044] Wherein, starch selects cornstarch for use.

[0045] Step 2: Put the above four materials into a blender and stir evenly. The specific mixing steps are:

[0046] Step 2.1, stirring and mixing the butyl acrylate and ammonium persulfate weighed in step 1; and mixing with starch;

[0047] Step 2.2, adding the weighed N,N-dimethylformamide into the mixed mixture of butyl acrylate, ammonium persulfate and starch;

[0048] Step 3: Put the above-mentioned four mixed materials evenly stirred into a microwave oven for microwave irradiation. The parameters of the microwave oven are fr...

Embodiment 2

[0051] Prepare starch-polybutylacrylate grafted starch, implement according to the following steps:

[0052] Step 1: Weigh starch, butyl acrylate, ammonium persulfate, and N,N-dimethylformamide respectively, wherein the mass of butyl acrylate is 33% of the mass of starch, the mass of ammonium persulfate is 5.33% of the mass of starch, The amount of N,N-dimethylformamide is 10% of the starch quality;

[0053] Wherein, starch selects potato starch for use.

[0054] Step 2: Put the above four materials into a blender and stir evenly. The specific mixing steps are:

[0055]Step 2.1, stirring and mixing the butyl acrylate and ammonium persulfate weighed in step 1; and mixing with starch;

[0056] Step 2.2, adding the weighed N,N-dimethylformamide into the mixed mixture of butyl acrylate, ammonium persulfate and starch;

[0057] Step 3: Put the above-mentioned four mixed materials evenly stirred into a microwave oven for microwave irradiation. The parameters of the microwave oven...

Embodiment 3

[0060] Prepare starch-polybutylacrylate grafted starch, implement according to the following steps:

[0061] Step 1: Weigh starch, butyl acrylate, ammonium persulfate, and N,N-dimethylformamide respectively, wherein the mass of butyl acrylate is 28% of the mass of starch, the mass of ammonium persulfate is 2.55% of the mass of starch, The amount of N,N-dimethylformamide is 7.5% of starch quality;

[0062] Wherein, starch selects tapioca starch for use.

[0063] Step 2: Put the above four materials into a blender and stir evenly. The specific mixing steps are:

[0064] Step 2.1, stirring and mixing the butyl acrylate and ammonium persulfate weighed in step 1; and mixing with starch;

[0065] Step 2.2, adding the weighed N,N-dimethylformamide into the mixed mixture of butyl acrylate, ammonium persulfate and starch;

[0066] Step 3: Put the four mixed materials that have been stirred evenly above into a microwave oven for microwave irradiation. The parameters of the microwave ...

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Abstract

The invention discloses a method for preparing starch-poly(butyl acrylate) grafted starch. The method is implemented specifically according to the following steps: Step 1, weighing raw materials; Step 2, fully mixing starch, butyl acrylate, ammonium persulfate and N,N-dimethylformamide which are weighed in the Step 1 so as to obtain mixed raw materials; Step 3, preparing grafted starch through microwave irradiation; and Step 4, crushing to prepare the starch-poly(butyl acrylate) grafted starch. By the method for preparing starch-poly(butyl acrylate) grafted starch, the problem of low grafting rate existing in an existing dry method for preparing a grafted starch sizing agent is solved, and a grafted starch sizing agent with high grafting rate is prepared.

Description

technical field [0001] The invention belongs to the technical field of textile size preparation and relates to a method for preparing starch-polybutylacrylate grafted starch. Background technique [0002] Grafted starch size is a kind of high-performance denatured starch size formed by initiating free radicals on the starch macromolecular chain through physical and chemical methods, and then reacting with propylene monomers through graft copolymerization. Ammonium persulfate is used as the initiator The grafted starch reaction process is as follows: [0003] S 2 o 8 2- ==2SO 4 -. [0004] SO 4 -. +H 2 O→HSO 4 - +HO· [0005] SO 4 -. And HO triggers the homolytic oxidation of starch to generate St, which reacts with the monomer to form grafted starch, and its structure is as follows: [0006] [0007] Wherein, M is a graft chain formed by butyl acrylate. [0008] Grafting rate is an important index affecting the performance of grafted starch, and its calcul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/18C08F2/48
Inventor 武海良沈艳琴王卫
Owner XI'AN POLYTECHNIC UNIVERSITY
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