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A kind of environment-friendly modified starch/feather protein graft copolymer composite slurry, preparation method and application thereof

A technology of graft copolymer and feather protein, which is applied in the field of preparation of environment-friendly modified starch/feather protein graft copolymer composite slurry, can solve the problems of difficult desizing and difficult decomposition, and achieve improved adhesion, Improved effect of low temperature adhesion

Active Publication Date: 2021-11-26
ANHUI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, PVA size has problems such as difficulty in desizing and not easy to decompose during the sizing process

Method used

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  • A kind of environment-friendly modified starch/feather protein graft copolymer composite slurry, preparation method and application thereof
  • A kind of environment-friendly modified starch/feather protein graft copolymer composite slurry, preparation method and application thereof
  • A kind of environment-friendly modified starch/feather protein graft copolymer composite slurry, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Composite slurry preparation includes the following steps:

[0033] (1) Extraction of feather protein: 1) Dry the washed feathers in an oven at 45°C to half-dry, cut them into pieces, then continue to dry them, and smash them with a powder machine to obtain feather powder; 6 times the volume of feather meal), hydrochloric acid (30% of feather meal mass), distilled water (1400mL) are added in the 3L beaker that 100g feather meal is housed, plastic wrap covers the mouth of beaker, adjust water bath temperature to be 70 ℃, continue under stirring After 4 hours, suction filter, wash several times with distilled water, dry, and weigh; 3) put the feather meal processed in step 2 into a beaker, and add sodium bisulfite (30% of the quality of the feather meal processed in step 2) Add it to the feather meal, add 1400mL of distilled water, adjust the water bath temperature to 70°C, and continue for 3 hours under stirring, then filter it with suction; 4) put the pretreated feather...

Embodiment 2

[0038] Composite slurry preparation steps (1), (2) are the same as in Example 1; (3) use sulfo-etherified-hexanoate starch as the main slurry, and first stir the water dispersion of the main slurry at 95°C After gelatinization for 1 hour to form a slurry, cool down to 60°C, add the aqueous solution of feather protein graft copolymer that has been fully stirred at 60°C for 60 minutes in the main slurry (the content of the feather protein graft copolymer is 50% of the main slurry quality). 5%) to form a composite liquid with a mass fraction of the main slurry of 1%, and fully stir at 60° C. for 60 minutes to fully compound, to obtain the composite slurry (named as composite slurry 2).

Embodiment 3

[0040] Composite slurry preparation steps (1), (2) are the same as in Example 1; (3) use sulfo-etherified-hexanoate starch as the main slurry, and first stir the water dispersion of the main slurry at 95°C After gelatinization for 1 hour to form a slurry, cool down to 60°C, add the aqueous solution of feather protein graft copolymer that has been fully stirred at 60°C for 60 minutes in the main slurry (the content of the feather protein graft copolymer is 50% of the main slurry quality). 7.5%) to form a composite solution with a mass fraction of 1% of the main slurry, and fully stir at 60° C. for 60 minutes to fully compound to obtain the composite slurry (named as composite slurry 3).

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Abstract

The invention provides an environment-friendly modified starch / feather protein graft copolymer composite slurry, a preparation method and application thereof. Use waste feather down as raw material to prepare feather protein graft copolymer slurry, and use modified starch as the main slurry. First, the modified starch aqueous dispersion is stirred and gelatinized at high temperature to form a slurry, and then cooled to the required temperature. , add the feather protein graft copolymer aqueous solution which has been fully stirred for a certain period of time at the same temperature as the main slurry, and fully stir for a certain period of time to fully compound to obtain the composite slurry. The composite slurry prepared by the present invention utilizes the modified starch and the polar group of the feather protein graft copolymer slurry molecular chain to hydrogen bond with the ester group on the polylactic acid molecular chain and generate van der Waals force, and with the help of feather protein The low surface tension of the graft copolymer size significantly improves the low-temperature adhesion of starch to polylactic acid yarns, and is very suitable for low-temperature sizing of polylactic acid warp yarns.

Description

technical field [0001] The invention relates to the technical field of environmentally friendly composite size for sizing textile warp yarns, in particular to an environment-friendly modified starch / feather protein graft copolymer composite size, a preparation method and an application thereof. Background technique [0002] With the rapid development of the economy, oil resources are becoming increasingly tense, oil prices are soaring, and the synthesis of polymer materials (such as: polyvinyl alcohol) using petroleum products as raw materials has brought a series of environmental pollution problems, prompting low prices, natural renewable, and renewable energy. The research, development and utilization of degraded polymer materials have been paid more and more attention by people. Textile size is an essential material in the sizing process throughout the textile industry. At present, the size used in the market is mainly starch, polyvinyl alcohol (PVA) and sodium polyallyl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/11D06M15/15D06M15/263C08F289/00C08F220/06C08F220/14D06M101/32
CPCC08F289/00D06M15/11D06M15/15D06M15/263D06M2101/32D06M2200/40C08F220/06C08F220/14
Inventor 李伟吴杰张正桥吴兰娟徐珍珍闫红芹鲁育豪张国禹陈敏
Owner ANHUI POLYTECHNIC UNIV
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