Preparation and characterization of hybrid double network chitosan/poly(acrylic amide-acrylic acid) high toughness hydrogel through Al3+ crosslinking

被引：52

作者：

Jiang, Xiancai ^{[1
]}

Xiang, Nanping ^{[1
]}

Wang, Jinquan ^{[1
]}

Zhao, Yulai ^{[1
]}

Hou, Linxi ^{[1
]}

机构：

[1] Fuzhou Univ, Sch Chem Engn, Fuzhou 350108, Fujian, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2017年 / 173卷

基金：

中国国家自然科学基金;

关键词：

Chitosan; Double network hydrogel; Dissolving; Toughness; Mechanical properties; CHITOSAN PHYSICAL HYDROGELS; CELLS IN-VITRO; MECHANICAL STRENGTH; NANOCOMPOSITE HYDROGELS; ALGINATE HYDROGELS; AQUEOUS-SOLUTION; SOLVENT; STRATEGY; RECOVERY; GELATIN;

D O I：

10.1016/j.carbpol.2017.06.003

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Development of bio-based hydrogels with good mechanical properties is of great importance for their excellent biocompatibility and biodegradability. In this paper, chitosan (CS) based double network (DN) hydrogel was prepared by dissolving CS in AlCl3.6H(2)O aqueous solution instead of acetic acid solution. After dissolving acrylic amide (AM), acrylic acid (AA), N, N'-methylenebisacrylamide and 2-hydroxy-4'(2-hydoxyethoxy)-2-methylpropiophenone were added into the CS/Al3+ solution and the CS/PAMAA-Al3+ DN hydrogel was prepared by UV polymerization. The hybrid physical and chemical crosslinked network hydrogels were prepared. The tensile and compression properties of CS/PAMAA-Al3+ DN hydrogel were studied. The results showed that the CS/PAMAA-Al3+ DN hydrogels have high toughness, stretch-ability, and excellent shape recovery properties. The CS/PAMAA-Al3+ DN hydrogel could show the tensile strength of 0.54 MPa and elongation at break of 2203.7%. These properties arise from the dynamic ionic interaction between Al3+ and CS/PAMAA macromolecular chains. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：701 / 706

页数：6

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