含聚偏氟乙烯互穿网络凝胶的合成及其压电性能  

Synthesis and Piezoelectricity Behavior of PVDF-Based IPN Hydrogel

作　　者：杜丽君 孟庆华[3] 金鑫[2,3] DU Lijun;MENG Qinghua;JIN Xin(Shanghai Huayi 3F New Material Co.Ltd.,Shanghai 200023,China;Joint Research and Development Center of Fluorine Materials of Shanghai Jiao Tong University and Huayi 3F,Shanghai 201100,China;School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海华谊集团三爱富新材料有限公司,上海200023 [2]上海交通大学华谊三爱富氟材料联合研发中心,上海201100 [3]上海交通大学化学化工学院,上海200240

出　　处：《功能高分子学报》2025年第1期51-59,共9页Journal of Functional Polymers

基　　金：内蒙古自治区上海交通大学科技合作专项(2023XYJG0001-01-06);上海交通大学医工交叉资助项目(YG2022QN040,YG2023QNB14)。

摘　　要：为构筑具有较高压电性能、高柔性的含聚偏氟乙烯(PVDF)水凝胶,采用原位交联聚合和溶剂置换相结合的合成方法,以丙烯酰胺(AM)为单体、N,N'-亚甲基二丙烯酰胺(MBA)为交联剂、过硫酸铵(APS)为引发剂,设计了聚丙烯酰胺(PAM)交联网络与PVDF分子链互穿的水凝胶。采用傅里叶红外光谱、X射线衍射、核磁共振等表征手段对互穿网络水凝胶的结构与性能进行了研究。结果表明,PVDF分子链均匀分布在水凝胶结构中,并与PAM交联网络互穿;PVDF的β晶型明显增加;含PVDF的水凝胶表现出优异的力学性能和压电性能,在12.5 kPa压缩应力下最高电压差可达15.17 mV,展现了作为高性能压电传感器材料的应用潜力。In order to produce poly(vinylidene fluoride)(PVDF)-containing hydrogels with high electrical conductivity and high flexibility,a combination of in situ cross-linking polymerization and solvent substitution was used to design a hydrogel in which the polyacrylamide(PAM)cross-linking network was interpenetrated with the molecular chain of PVDF,using acrylamide(AM)as the monomer,N,N'-methylenebisacrylamide(MBA)as the cross-linking agent,and ammonium persulfate(APS)as the initiator.The structure and properties of the interpenetrating network hydrogels were investigated by means of Fourier-transform infrared spectroscopy,X-ray diffractometry,nuclear magnetic resonance and other methods.The results show that PVDF molecular chains are uniformly distributed in the hydrogel structure and interpenetrate with the PAM network,and theβ-crystalline form of PVDF is significantly increased.The PVDF-based hydrogel exhibits excellent mechanical and piezoelectric properties,with the highest potential output of 15.17 mV under the compressive stress of 12.5 kPa,highlighting its potential as a robust material for the high-performance piezoelectric sensors.

关 键 词：聚偏氟乙烯 聚丙烯酰胺 互穿网络凝胶 聚丙烯腈 压电性能 

分 类 号：TB34[一般工业技术—材料科学与工程]