文献类型：期刊文献

中文题名：醋酸纤维素/PET接枝共聚物的制备及性能

英文题名：Preparation and Properties of Cellulose Acetate Grafted PET

作者：侯佳[1];方向晨[2];白富栋[2];郎美东[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237;[2]中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺113001

年份：2017

卷号：30

期号：2

起止页码：197

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

语种：中文

中文关键词：二醋酸纤维素;接枝聚合物;离子液体

外文关键词：cellulose diacetate; graft polymer; ionic liquids

摘要：以低数均分子量的聚对苯二甲酸乙二醇酯(PET)、二醋酸纤维素(CDA)为原料,异孚尔酮二异氰酸酯(IPDI)为接枝剂,二月桂酸二丁基锡(DBTDL)和离子液体1-丁基-3-甲基咪唑氯盐为催化剂制备得到新型的接枝共聚物CDA-g-PET。对接枝过程进行了优化,研究了催化剂种类与接枝剂用量对接枝过程的影响,利用红外分析和广角X射线衍射分析探究了接枝机理。同时对CDA-g-PET膜进行力学性能测试,探讨了PET的加入量对CDA-g-PET膜力学性能的影响。结果表明:PET通过化学键连接接枝到CDA上,接入的PET降低了CDA的结晶性;采用DBTDL与离子液体作为联合催化剂,接枝时间由7d缩短至8h;当接枝剂IPDI的加入量,即n(IPDI)/n(PET)为1.05~1.10时CDA-g-PET无交联;随着PET含量的增加,CDA-g-PET膜与CDA膜相比拉伸强度仅降低6.55%~27.24%,断裂伸长率增加149.89%~177.81%。
A new grafting product CDA-g-PET was synthesized using polyethylene terephthalate（PET）with low molecular weight and cellulose diacetate（CDA）as raw materials,isophorone diisocyanate（IPDI）as grafting agent and dibutyltin dilaurate（DBTDL）,1-butyl-3-methylimidazolium chloride as grafting promoter.The grafting process was optimized via exploring the type of catalyst and the amount of grafting agent.The mechanism of grafting was explored by Fourier infrared spectroscopy and wide angle X-Ray Diffraction（XRD）analysis.Furthermore,the mechanical property of CDA-g-PET film was influenced by the content of PET.The results show that PET is grafted onto CDA by chemical bond linking,and reduces the crystalline of CDA.Grafting time decreases to 8hfrom 7ddue to DBTDL and ionic liquids as combined catalyst.When the amount of grafting agent for n（IPDI）/n（PET）is 1.05-1.10,there is no crosslinked CDA-g-PET found.With the increase of PET content,the tensile strength of CDA-g-PET film decreases by 6.55%-27.24%and the elongation at break increases by 149.89%-177.81%compared with CDA film.