高力学强度羟乙基纤维素/聚丙烯酰胺复合水凝胶的制备  

Preparation of High Mechanical Strength Hydroxyethyl Cellulose/Polyacrylamide Composite Hydrogels

作　　者：郑坤[1] 赵娇娇 陈莹[1] 王春鹏[1] 储富祥[1] 

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏南京210042 [2]南京大学现代工程与应用科学学院,江苏南京210093

出　　处：《高分子材料科学与工程》2017年第11期6-11,共6页Polymer Materials Science & Engineering

基　　金：中国林业科学研究院基本科研业务费专项资金(CAFYBB2017MA016);浙江省省院合作林业科技项目(2016SY11);江苏省省生物质能源与材料基础科学研究重点实验室(JSBEM-S-201503)

摘　　要：通过自由基聚合一步合成了羟乙基纤维素/聚丙烯酰胺(HEC/PAM)复合水凝胶,这种水凝胶具有优异的拉伸性能和压缩性能,可能源于PAM链与HEC链之间的氢键相互作用。经测试,HEC/PAM复合水凝胶可被拉伸至原尺寸的24倍,对应的拉伸断裂应力为113kPa;90%压缩形变对应的压缩强度达0.87 MPa;水凝胶的最大压缩形变达95%以上。同时,HEC/PAM水凝胶还表现出了优异的可恢复性能。因此,HEC/PAM复合水凝胶在生物医药领域有潜在的应用价值。Hybrid hydroxyethyl cellulose /polyacrylamide （HEC/PAM） hydrogels with excellent tensile and compressive properties were successfully prepared by one-step free-radical polymerization. The hydrogen bonds between the PAM chains and I-IEC chains mainly contributed to the good mechanical properties of hybrid hydrogels. The HEC/PAM hybrid hydrogels exhibit an extremely large elongation at break of 2400 %, and a fracture stress of 113 kPa; they could reach a strain of over 95% without break; the compressive stress at 90% of these hybrid hydrogels reaches as high as 0.87 MPa. Meanwhile, HEC/PAM hybrid hydrogels exhibit excellent recoverable performance. Thus, the HEC/PAM hybrid hydrogels could be potentially applied in biomedical fields.

关 键 词：羟乙基纤维素 聚丙烯酰胺 复合水凝胶 高力学强度 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业]