衰减全反射红外光谱法分析本体聚合ABS相转变过程  

Analyses of the Phase Transitions of Bulk-Polymerized ABS via Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy

作　　者：林宇航 王井丽 张宇 杜蕾[3] 王犇[1] 李树豪 LIN Yuhang;WANG Jingli;ZHANG Yu;DU Lei;WANG Ben;LI Shuhao(College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Wanghua Chemical(Yantai)Chlor-Alkali Thermal Power Co.,Ltd.,Yantai 264003,China;College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;College of Chemical Engineering,Gaomi Campus,Qingdao University of Science and Technology,Weifang 261000,China)

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042 [2]万华化学(烟台)氯碱热电有限公司,山东烟台264003 [3]青岛科技大学化工学院,山东青岛266042 [4]青岛科技大学高密校区化工学院,山东潍坊261000

出　　处：《塑料工业》2024年第7期46-53,共8页China Plastics Industry

基　　金：山东省重点研发计划(2019GGX104014)。

摘　　要：本体法合成丙烯腈-丁二烯-苯乙烯共聚物(ABS)树脂具有环境友好的优势,然而引发体系以及本体法中的相转变和接枝过程会对ABS成品性能产生影响。采用本体法合成ABS树脂,研究了不同引发剂(偶氮二异丁腈)、链转移剂(叔十二烷基硫醇)、溶剂(乙苯)用量对本体聚合相转变动力学过程和相转变过程的影响。通过衰减全反射-傅里叶变换红外光谱(ATR-FTIR)分析了本体聚合相转变过程中的ABS树脂结构,对比力学性能。结果表明,相转变中的接枝行为会影响聚合速率,适量的引发剂、链转移剂和溶剂(质量分数分别为0.06%,0.30%和20%)有利于相转变过程中的接枝过程,ATR-FTIR分析相转变过程接枝相的苯乙烯的苯环和丙烯腈的腈基峰强度明显增加,同时获得综合性能最佳的ABS树脂。然而链转移剂过量时,ABS中的丙烯腈单体会受到影响。The acrylonitrile-butadiene-styrene copolymer(ABS)synthesis resins produced by the bulk polymerization are environmentally friendly.However,the initiation system as well as the phase transition and grafting process in the bulk polymerization could have effects on the properties of ABS products.ABS resins were synthesized by the bulk polymerization.The effects of different contents of the initiator(azodiisobutyronitrile),chain transfer agent(tert-dodecylmercaptan),and solvent(ethylbenzene)on the kinetics processes of the bulk polymerization phase transition and the phase transition process were investigated.The structures of ABS resins during the phase transition process of the bulk polymerizations were analyzed by attenuated total reflection-Fourier transform infrared spectroscopy(ATR-FTIR)to compare their mechanical properties.The results show that the grafting behavior in the phase transition affects the polymerization rate,and the appropriate contents of initiator(a mass fraction of 0.06%),chain transfer agent(a mass fraction of 0.30%)and solvent(a mass fraction of 20%)are beneficial to the grafting process during the phase transition.During the phase transition process,the peak intensities of the styrene benzene ring and the acrylonitrile nitrile group in the grafted phase are significantly increased,which is revealed by the analysis of ATR-FTIR.Meanwhile,the ABS resin with the best overall performances were obtained.However,when the chain transfer agent content is too high,the acrylonitrile monomer in ABS would be affected.

关 键 词：本体聚合 丙烯腈-丁二烯-苯乙烯树脂 相转变 动力学 力学性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]