Isobutene-maleic anhydride alternating copolymer/sodium alginate hydrogel and preparation method thereof

Abstract

The invention relates to an isobutene-maleic anhydride alternating copolymer / sodium alginate hydrogel and a preparation method thereof. The hydrogel is prepared from sodium alginate, a curing agent, aretarder, a cross-linking agent, a preservative and the balance of water. The hydrogel prepared through the invention is stable in colloid properties, good in temperature resistance, good in high-temperature stability at 60 DEG C, incapable of separating water at the low temperature of minus 20 DEG C, simple in preparation process, and moderate in conditions, is a carrier with an excellent performance, and can be used in the field of daily use chemicals such as air fresheners and facial masks.

Description

technical field [0001] The product relates to the field of daily chemical products, in particular to an isobutylene-maleic anhydride alternating copolymer / sodium alginate hydrogel and a preparation method thereof. Background technique [0002] Sodium Alginate (Sodium Alginate, NaAlg, referred to as AGS) is a polysaccharide carbohydrate extracted from brown algae kelp or sargassum, and its molecule is composed of β-D-mannuronic acid (β-D-mannuronic, M) It is connected with α-L-guluronic acid (α-L-guluronic, G) by (1→4) bond. The molecule of sodium alginate contains -COO － group, when divalent cations are added to an aqueous solution of sodium alginate, the Na in the G unit + It will exchange with these divalent cations and transform the sodium alginate solution into a gel. However, the simple sodium alginate gel has a single cross-linking method, and the water separation is serious under low temperature conditions, which greatly limits the use of sodium alginate gel under ...

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Problems solved by technology

However, the simple sodium alginate gel has a single cross-linking method, and the water separation is serious under low temperature conditions, which greatly limits the use of sodium alginate gel under low temperature conditions.

Existing patent technology CN105601950A discloses a preparation method of sodium alginate agar double-network high-strength natural hydrogel material. The process of this method is relatively complicated. Although the obtained gel strength is high, it cannot solve the serious problem of water separation under low temperature conditions.

[0003] In view of the shortcomings of the existing sodium alginate gel, which has obvious water separation phenomenon at low temperature and is unstable at high temperature, the present invention aims to provide a kind of sodium alginate gel with simple preparation process, mild conditions, high gel strength and excellent temperature resistance. Sodium Alginate Hydrogel

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