摘要
为制备具有良好力学性能和导电性能的水凝胶,在羟丙基甲基纤维素(HPMC)存在的条件下,以丙烯酰胺(AM)和丙烯酸(AA)为共聚单体、Zr^(4+)为交联剂,通过原位自由基聚合制备了HPMC/P(AM-co-AA)-Zr^(4+)/NaCl双网络水凝胶,并对其力学性能、导电性能及相关传感性能进行了研究。结果表明,所制备的HPMC/P(AM-co-AA)-Zr^(4+)/NaCl水凝胶断裂应变达1820%、断裂强度为0.77 MPa、断裂能为4210 kJ/m^(3),电导率为8.44 S/m,可实现力学性能与导电性能的平衡。该水凝胶具有良好的回复能力和较高应变灵敏度,表现出宽的应变窗口(0%~800%),可望用于应变传感器。
In order to prepare hydrogels with good mechanical properties and electrical conductivity,HPMC/P(AM-co-AA)-Zr^(4+)/NaCl double network hydrogel was prepared by in situ radical polymerization with acrylamide(AM)and acrylic acid(AA)as comonomers and Zr^(4+)as crosslinking agent in the presence of hydroxypropylmethyl cellulose(HPMC).The mechanical properties,electrical conductivity and related sensing properties of the hydrogel were studied.The results show that the fracture strain of HPMC/P(AM-co-AA)-Zr^(4+)/NaCl hydrogel is 1820%,the fracture strength is 0.77 MPa,the fracture energy is 4210 kJ/m^(3),and the conductivity is 8.44 S/m,which can realize the balance of mechanical properties and electrical conductivity.The hydrogel has good recovery ability and high strain sensitivity,showing a wide strain window(0%~800%),which is expected to be used for strain sensors.
作者
张甲樋
杜文浩
陈彦霏
张熙
Jiatong Zhang;Wenhao Du;Yanfei Chen;Xi Zhang(State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University,Chengdu 610065,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2022年第8期1-8,17,共9页
Polymer Materials Science & Engineering
基金
国家科技重大专项(2016ZX05021-004-007)。
关键词
羟丙基甲基纤维素
丙烯酰胺-丙烯酸共聚物
导电水凝胶
力学性能
导电性能
应变传感器
hydroxypropylmethyl cellulose
acrylamide-acrylic acid copolymer
conductive hydrogel
mechanical property
electrical conductivity
strain sensor
