林产化学与工业2026，Vol.46Issue(2)：113-120,8.DOI:10.20195/j.issn.0253-2417.2025014
强韧大豆蛋白导电水凝胶的制备及传感性能研究
Preparation and Sensing Properties of Tough Soybean Protein Isolates Derived Conductive Hydrogel
摘要
Abstract
Soybean protein isolates(SPI)were mixed with acrylamide(AAm),cationic cellulose nanofiber(CCNF)and lithium chloride(LiCl)to fabricate an interpenetrating network hydrogel matrix by thermal-induced radical polymerization.Then,the high toughness polyacrylamide-soybean protein isolates-cationic cellulose nanofiber(PAAm-SPI-CCNF)conductive hydrogel was prepared by impregnating the hydrogel matrix in ammonium sulfate solution.And the mechanical,anti-freezing and sensing properties of the conductive hydrogel were investigated.The synergistic effect among CCNF,SPI cluster and PAAm polymer chains endows conductive hydrogel with excellent mechanical properties.Compared with PAAm-SPI hydrogel without CCNF,under the condition of the amount of CNNF was 3 g,the elongation at break increases from 840％to 973％,tensile strength increases from 148 kPa to 370 kPa and toughness from 768 kJ/m3 to 1 869 kJ/m3 for PAAm-SPI-CNNF3 hydrogel.Additionally,this hydrogel exhibits remarkable resilience with over 65％elastic recovery under 90％compressive strain.Meanwhile,the hydrogel has exceptional anti-freezing properties,maintaining high ionic conductivity of 0.293 S/m at-30 ℃.The assembled sensor based on this hydrogel exhibited desirable strain and pressure response.The hydrogel sensor achieves gauge factor(GF)of 1.15 and 2.95 in the strain ranges of 0-100％and 100-500％,respectively.In the pressure intervals of 0-50,50-200,and 200-450 kPa,the GF was 0.975,0.087,and 0.021 kPa-i,respectively,and the hydrogel sensor still has stable sensing performance at low temperatures.关键词
水凝胶/抗冻性能/应变传感器/压力传感器Key words
hydrogel/anti-freezing property/strain sensor/pressure sensor分类
化学化工引用本文复制引用
李雨羲,纪青松,南静娅,王春鹏..强韧大豆蛋白导电水凝胶的制备及传感性能研究[J].林产化学与工业,2026,46(2):113-120,8.基金项目
国家自然科学基金资助项目(32301526) （32301526）
江苏省自然科学基金资助项目(BK20220213) （BK20220213）
江苏省生物质能源与材料重点实验室基本科研业务费项目(JSBEM-S-202210) （JSBEM-S-202210）
