文章摘要
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
  
DOI:10.16865/j.cnki.1000-7555.2017.11.002
中文关键词: 羟乙基纤维素  聚丙烯酰胺  复合水凝胶  高力学强度
英文关键词: hydroxyethyl cellulose  polyacrylamide  hybrid hydrogels  superior mechanical properties
基金项目: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)
作者单位
郑 坤1, 赵娇娇2, 陈 莹1, 王春鹏1, 储富祥1 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 
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中文摘要:
      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0.87MPa;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。
英文摘要:
      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 HEC 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.
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