Chemical and physical crosslinking based dual-network cellulose gel system material

一种基于化学和物理交联的双网络纤维素凝胶系材料

Abstract

本发明公开了一种基于化学和物理交联的双网络纤维素凝胶系材料,该材料包括水凝胶、气凝胶和生物塑料。在纤维素溶液中加入定量的交联剂并搅拌后先形成部分化学交联的纤维素凝胶,然后将该凝胶置于纤维素的非溶剂中进行物理交联,经过水洗后得到双网络纤维素水凝胶。由双网络纤维素水凝胶干燥制备双网络纤维素气凝胶;将双网络纤维素气凝胶在150 oC以上热处理后得到碳气凝胶;将双网络纤维素水凝胶或气凝胶热压制备双网络纤维素生物塑料。本发明制备的双网络纤维素材料具有优良的力学性能、高的比表面积和高的断裂伸长率等优点,并且容易加工成纤维、片材、颗粒状、薄膜、圆柱体等多种形式的成型品。
The invention discloses a chemical and physical crosslinking based dual-network cellulose gel system material. The material comprises aquogel, aerogel and bioplastics, wherein a quantitative crosslinking agent is added to a cellulose solution and stirred to form partial chemical crosslinking cellulose gel, the gel is placed in a cellulose nonsolvent for physical crosslinking, and dual-network cellulose gel is obtained after washing. The dual-network cellulose aerogel is prepared by drying dual-network cellulose aquogel, and then is subjected to heat treatment at the temperature of higher than 150 DEG C, and carbon aerogel is obtained; dual-network cellulose aquogel or aerogel is subjected to hot pressing, and dual-network cellulose bioplastics are prepared. The prepared dual-network cellulose material has the advantages of good mechanical property, large specific surface area, high elongation at break and the like, can be easily processed into formed products with various forms such as a fiber form, a sheet form, a particle form, a thin film form, a cylinder form and the like.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    CN-101128488-AFebruary 20, 2008路易吉·安布罗西奥;路易吉·尼古拉斯;亚历山德罗·圣尼诺Biodegradable, super absorbent polymer hydrogels and a method for their preparation
    CN-101880410-ANovember 10, 2010武汉大学一种高强度透明纤维素材料及其制备方法
    JP-H05237142-ASeptember 17, 1993Asahi Chem Ind Co Ltd, 旭化成工業株式会社Treating means for ophthalmology
    JP-S57159801-AOctober 02, 1982Chisso CorpProduction of cellulose gel particle

NO-Patent Citations (1)

    Title
    XINGZHEN QIN ET AL.: "Gelation behavior of cellulose in NaOH/urea aqueous system via cross-linking", 《CELLULOSE》

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-105542218-AMay 04, 2016昆明理工大学Preparation method of citric acid cross-linking reinforced cellulose aerogel
    CN-105837861-AAugust 10, 2016苏鑫一种复合天然高分子凝胶类材料