黄麻纤维生物法桥接丁子香酚接枝丙烯酰胺研究  

Enzymatic grafting of eugenol-bridged jute fiber with acrylamide

作　　者：杜淼[1] 董爱学 王强[1] 吴慧敏[1] 范雪荣[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《功能材料》2015年第15期15035-15040,共6页Journal of Functional Materials

基　　金：国家杰出青年科学基金资助项目(50725416);国家自然科学基金资助项目(51173071);教育部新世纪优秀人才资助项目(NCET-12-0883);教育部长江学者和创新团队发展计划资助项目(IRT1135);中央高校基本科研业务费专项资金资助项目(JUSRP51312B);江苏省自然科学基金资助项目(BK2011157)

摘　　要：研究了漆酶催化黄麻木质纤维接枝过渡单体丁子香酚,然后在漆酶/t-BHP催化下,在丁子香酚上进一步接枝丙烯酰胺的亲水化改性反应。结果表明,黄麻纤维接枝丁子香酚的XPS分峰图上观察到283.49 e V处存在CC的能谱峰,证明丁子香酚接枝到了黄麻纤维表面;溴量法测得在50℃、p H值=4、丁子香酚浓度5 mmol/L、漆酶用量1.68 U/m L条件下反应4 h接枝过渡单体效果最好,接枝率为1.06%。在黄麻纤维桥接丁子香酚接枝丙烯酰胺的红外光谱图上呈现酰胺基团的红外特征吸收峰,说明黄麻纤维表面成功接枝丙烯酰胺;微量凯氏定氮法测得黄麻纤维桥接丁子香酚接枝丙烯酰胺的接枝率为3.66%。Enzymatic processes provide new perspectives for the hydrophilization modification of jute lignocellulosic fiber.First,eugenol as an intermediate monomer was grafted to the lignin-rich jute fabric catalyzed by laccase. Then,further grafting polymerization of acrylamide to the eugenol-bridged jute mediated by laccase / tert-butyl hydroperoxide( t-BHP)was investigated in this study. The results showed that eugenol could be grafted to the surface of jute via the catalysis of laccase and the C1 s peak of CC was observed at 283. 49 e V in XPS spectra. The best grafting conditions measured by a bromine method were 50 ℃,p H was 4,4 h,eugenol concentration of 5 mmol / L,laccase dosage of 1. 68 U / m L for grafting rate of 1. 06%. FT-IR spectrum of acrylamide-grafted eugenol-bridged jute showed obvious characteristic peaks of amide groups,which revealed the existence of grafted acrylamides on the jute fibers. The grafting rate of acrylamide onto the jute fiber was 3. 66% determined by the micro kjeldahl method.

关 键 词：黄麻 丁子香酚 丙烯酰胺 漆酶 桥接 接枝共聚 

分 类 号：TS190.1[轻工技术与工程—纺织化学与染整工程]