Synthesis of a self-healable and pH responsive hydrogel based on an ionic polymer/clay nanocomposite

被引：32

作者：

Banerjee, Sovan Lal ^{[1
]}

Khamrai, Moumita ^{[2
]}

Kundu, P. P. ^{[2
]}

Singha, Nikhil K. ^{[1
]}

机构：

[1] Indian Inst Technol, Rubber Technol Ctr, Kharagpur, W Bengal, India

[2] Univ Calcutta, Dept Polymer Sci & Technol, Kolkata, India

来源：

RSC ADVANCES | 2016年 / 6卷 / 85期

关键词：

BIOMEDICAL APPLICATIONS; POLYETHYLENE-GLYCOL; POLY(ACRYLIC ACID); HEALING HYDROGELS; HYBRID HYDROGELS; AQUEOUS-SOLUTION; ADSORPTION; MONTMORILLONITE; COPOLYMER; DELIVERY;

D O I：

10.1039/c6ra01074a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This investigation reports the preparation of a pH responsive self-healing nanocomposite hydrogel based on the in situ polymerization of 2-(acryloyloxy) ethyl trimethylammonium chloride and acrylic acid using N,N'-methylenebisacrylamide as a crosslinker and ammonium persulfate (APS) as a thermal initiator in the presence of soluble starch and organically modified montmorillonite (OMMT). The hydrogel was characterized using FTIR, SEM and TEM analyses. The influence of different parameters in swelling was investigated. The self-healing ability of the hydrogel was measured in different pH media and it was observed that it can show self-healing ability in physiological pH (pH = 7.4), in acidic pH (pH = 1.2) and in saline solution. This developed hydrogel showed excellent swelling ratio, mechanical strength, and elasticity. The hydrogel exhibited modulus values (G', G '') in the range of 10(2) Pa.

引用

页码：81654 / 81665

页数：12

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