Grafted modified starch slurry

Abstract

The invention discloses grafted modified starch slurry. The spinning slurry composition consists of the following raw material components in part by weight: 100 parts of native starch, 1 to 50 parts of grafting monomer and 0.1 to 5 parts of initiator, wherein the grafting monomer is any two of acrylic acid, methyl acrylate, methyl methacrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate and acrylamide; and the initiator is any one or more of ammonium ceric nitrate, potassium persulfate, ammonium persulfate, potassium permanganate and H2O2-Fe<2+>. Compared with the prior art, the invention has the advantages that: binary grafted modified starch is prepared from 100 weight parts of native starch, 1 to 50 weight parts of grafting monomer and 0.1 to 5 weight parts of initiator by a dry method, so that the mechanical property of the starch slurry is obviously improved, the raw materials and energy are saved, and production cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of textile size, in particular to a grafted starch size and a preparation method thereof. Background technique [0002] Starch is currently the most used warp sizing material. It is a renewable resource with a low price and can be completely biodegraded. However, due to the semi-rigidity of the glucose residues on the starch macromolecular chains and the strong hydrogen bonds between the starch molecules, the starch slurry has a high viscosity, the size film is hard and brittle, and lacks adhesion to synthetic fibers. Therefore, improving the performance of starch size is an important topic in the field of sizing materials. [0003] Grafted modified starch is a kind of chemical modification of starch, and it is one of the suitable sizing materials to replace PVA. It usually uses vinyl-based monomers to form a synthetic polymer branch chain with a certain degree of polymerization on the main chain of starch macromole...

AI Technical Summary

Problems solved by technology

At present, the grafted starch is mainly based on the wet method, w

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