Complete degradation Beta-cyclodextrin immobilized starch slurry and preparation method thereof

A technology of cyclodextrin and corn starch, applied in textiles and papermaking, fiber treatment, plant fiber, etc., can solve the problems of serious environmental pollution, difficult desizing, natural interpretation, etc., and achieve high anti-retrogradation and sizing performance Superior, good film-forming effect

Inactive Publication Date: 2017-02-15
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

PVA has always been considered as the most ideal size because of its excellent adhesion and film-forming properties, but desizing is difficult, and the waste liquid after desizing is difficult to dispose of naturally, which seriously pollutes the environment. Degrading non-polluting sizing has always been an important task for sizing researchers (see Li Liang. Clean preparation and performance research of grafted starch sizing [D]. Donghua University, 2007.)

Method used

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  • Complete degradation Beta-cyclodextrin immobilized starch slurry and preparation method thereof
  • Complete degradation Beta-cyclodextrin immobilized starch slurry and preparation method thereof
  • Complete degradation Beta-cyclodextrin immobilized starch slurry and preparation method thereof

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preparation example Construction

[0027] The present invention simultaneously designs the preparation method (abbreviation preparation method) of fully degraded starch-immobilized cyclodextrin slurry, the preparation method adopts the composition of the raw material mass fraction of starch-immobilized cyclodextrin described in the present invention and the following process steps:

[0028] 1. Preparation of prepolymer (CA-β-CD) by semi-dry method: dissolve the stated number of β-cyclodextrin, citric acid, sodium hypophosphite and deionized water, stir thoroughly and place in a blast oven Inside, stand at 99-101°C for 58-62min, then take out and cool. The mixture was placed in a Soxhlet extractor, using absolute ethanol as a solvent, and extracted under reflux at 85-95°C for 5.5-6.5h to remove the catalyst, unreacted citric acid and other by-products. Dissolve the crude product in distilled water, add isopropanol dropwise, filter after precipitation, wash three times to obtain pure prepolymer, and vacuum dry at...

Embodiment 1

[0042] Weigh 40.0g of β-cyclodextrin, 14.8g of citric acid (ca) and 1.9g of sodium hypophosphite into a beaker, add 24g of distilled water, stir thoroughly, place in a blast oven, and stand at 100°C for 1h Then take it out and cool it. The mixture is placed in a Soxhlet extractor, using absolute ethanol as a solvent, and refluxed at 90°C for 6 hours to remove the catalyst, unreacted citric acid and other by-products. Dissolve the crude product in distilled water, dropwise Add isopropanol, filter after precipitation, wash three times to obtain pure CA-β-CD, and vacuum dry at 60°C for 24h. The experimental results are shown in Table 2.

Embodiment 2

[0052] Weigh 4g of starch, 6g of prepolymer, and 0.18g of SHP into a beaker, then add 50ml of deionized water to make a solution, heat in a water bath to 100°C, and stir fully at this temperature, react for 30min, and filter with ethanol precipitation , Repeat the operation three times, the filter residue is the product, and at the same time dry at 60°C for 12 hours, and then put the grafted solids obtained after drying into the desiccator to balance for 5 hours. The experimental results are shown in Table 3.

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Abstract

Provided is a novel, green, and environmentally friendly slurry prepared from using lemon acid as cross-linking agent and cyclodextrin immobilized corn starch essence. The advantages of the complete degradation Beta-cyclodextrin immobilized starch pulp are low stickiness, high fluidity, good dilating property, high degree of paste liquid transparency, high anticoagulation, strong stability, strong aging resistance; strong adhesive force to pure cotton yarn, good film forming property, tough serous coat and the like, superior yarn-starching property. More significantly, the main components of the slurry is starch and cyclodextrin, the residue slurry in destarched waste liquid can easily be completely degraded by microorganism, the slurry is complete bio-degradable green slurry; the development prospect of the slurry in replacing PVA on fine count pure cotton yarn starching is very broad.

Description

technical field [0001] The invention relates to the denatured starch size technology for textiles, in particular to a fully degradable β-cyclodextrin-immobilized starch size and a preparation method thereof, and measures its sizing performance and degradation performance. Background technique [0002] The three main sizing materials used for warp yarn sizing are: modified starch, polyvinyl alcohol (PVA), and polyacrylic sizing. PVA has always been considered as the most ideal size for its excellent adhesion and film-forming properties, but desizing is difficult, and the waste liquid after desizing is difficult to dispose of naturally, which seriously pollutes the environment. Degrading non-polluting sizing has always been an important task for sizing researchers (see Li Liang. Clean preparation and performance research of grafted starch sizing [D]. Donghua University, 2007.). [0003] Starch, as the main material for warp yarn sizing, has a wide range of sources, is cheap, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/11D06M15/03C08J3/24D06M101/06C08L3/02C08L5/16
CPCC08J3/246C08J2303/02C08J2305/16D06M15/03D06M15/11D06M2101/06
Inventor 王建坤梁卡张昊郭晶范新宇
Owner TIANJIN POLYTECHNIC UNIV
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