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Thiosemicarbazide molecular covalent grafted acrylic fiber and preparation method and application thereof

A technology of thiosemicarbazide and acrylic fibers, which is applied in fiber types, fiber treatment, textiles and papermaking, etc. It can solve the problems of low graft fastness and achieve the effect of low price, easy realization and easy control

Active Publication Date: 2018-12-25
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is disclosed that the gap between silk fibroin and fiber is used to deposit a film, which is a physical method of fiber protein film formation, and the grafting fastness is low only by the adsorption between protein molecules and fibers

Method used

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  • Thiosemicarbazide molecular covalent grafted acrylic fiber and preparation method and application thereof
  • Thiosemicarbazide molecular covalent grafted acrylic fiber and preparation method and application thereof
  • Thiosemicarbazide molecular covalent grafted acrylic fiber and preparation method and application thereof

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Embodiment 1

[0068] The thiosemicarbazide molecule covalently grafted acrylic fibers provided by the invention has the following structure:

[0069]

[0070] Wherein, the specific range of n depends on the carbon chain and is not fixed.

[0071] R is R 1 to R 8 any of

[0072]

Embodiment 2

[0074] The present invention provides the preparation method of covalently grafted acrylic fiber of thiosemicarbazide molecule, and its specific reaction equation is as follows:

[0075]

[0076]

[0077] The preparation method of the present invention is described in detail below with a more specific embodiment, taking raw material as 5-methyl salicylaldehyde as example:

[0078] First the first step (1) acrylic fiber hydrolysis: acrylic fiber is hydrolyzed at 80 ℃, in 10% sodium hydroxide (NaOH) solution, and hydrolysis time is 30~60min, after reaction finishes, take out fiber, wash to medium with deionized water properties, dried to constant weight.

[0079] The second step (II) synthesis of small molecules of thiosemicarbazide: first dissolve thiomethylhydrazine in 20-30ml of water, heat and stir to dissolve, then dissolve 5-methyl salicylaldehyde in 10-20ml of absolute ethanol and stir to dissolve, and finally Add 5-methylsalicylaldehyde gradually to thiomethylhydr...

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Abstract

The invention discloses a preparation method of thiosemicarbazide molecular covalent grafted acrylic fiber. The preparation method includes: hydrolyzing acrylic fiber, generating carboxyl groups on the surface, allowing one ends of the small molecules of thiosemicarbazide and carboxyl groups on the surface of the hydrolyzed acrylic fiber form covalent bonds, and forming a stable structure on the surface of the acrylic fiber. The invention also provides thiosemicarbazide molecular covalent grafted acrylic fiber and its specific application. The preparation method is simple and convenient to perform; the prepared thiosemicarbazide molecular covalent grafted acrylic fiber has good performance and is worthy of popularization; the acrylic fiber has a wide range of origin, both the materials andmodifying drugs are nontoxic harmless articles; small-molecular compounds used herein are safe and harmless to human; the temperature condition required by reaction is every easy to implement, with no toxic products or byproducts produced; the preparation method is a novel synthetic method with good safety and environmental friendliness.

Description

technical field [0001] The invention relates to a preparation method and application of a modified acrylic fiber, in particular to a thiosemicarbazide molecule modified acrylic fiber, a preparation method and an application thereof, and belongs to the field of textile functional fiber development and application. Background technique [0002] Many properties of polyacrylonitrile fiber are similar to that of wool, so it is called "synthetic wool". Acrylic fiber has excellent thermal performance, mechanical properties, and corrosion resistance, and the output of acrylic fiber is sufficient, with a wide range of sources and various varieties. Good selection source of sexual material. [0003] Modification of synthetic polymers with small molecules with certain biological characteristics can improve the performance of synthetic fibers, generally endow fibers with new biological activities to a certain extent, and expand their applications in various fields. Moreover, the modifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/432D06M101/28
CPCD06M13/432D06M2101/28
Inventor 董雄伟姚垚黄宇娇陈悟王训该
Owner WUHAN TEXTILE UNIV
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