详细信息
二乙二醇二甲醚对反应挤出苯乙烯/异戊二烯共聚物微观结构的影响
The Effect of Diglycol Dimethyl Ether on the Structure of Styrene/Isoprene Copolymers Polymerized by Reactive Extrusion
文献类型:期刊文献
中文题名:二乙二醇二甲醚对反应挤出苯乙烯/异戊二烯共聚物微观结构的影响
英文题名:The Effect of Diglycol Dimethyl Ether on the Structure of Styrene/Isoprene Copolymers Polymerized by Reactive Extrusion
作者:张锴[1];周颖坚[1];孙刚[1];胡福增[1];郑安呐[1]
机构:[1]华东理工大学材料科学与工程学院反应挤出研究室,超细材料制备与应用教育部重点实验室,上海200237
年份:2009
卷号:25
期号:3
起止页码:42
中文期刊名:高分子材料科学与工程
外文期刊名:Polymer Materials Science & Engineering
收录:CSTPCD;;Scopus;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:国家自然科学基金重大资助项目(50290090)
语种:中文
中文关键词:反应挤出;苯乙烯;异戊二烯;二乙二醇二甲醚
外文关键词:reactive extrusion; styrene; isoprene; diglycol dimethyl ether
摘要:以紧密啮合双螺杆挤出机为反应器,二乙二醇二甲醚(2G)为极性添加剂,有机锂为引发剂,采用混合单体一次加料的反应挤出技术本体法合成了苯乙烯/异戊二烯共聚物,1H-NMR、多检测GPC和DMA的分析结果表明,随着2G的加入及其用量的增加,该共聚物中的3,4-IP和无规苯乙烯单元的含量逐渐增加;PS嵌段平均长度逐渐变短,分子链末端有较长的PS嵌段;连续相和分散相的玻璃化转变温度逐渐向高温方向移动,两相相容性逐渐提高。
By means of the twin-screw extruder as the reactor, diglycol dimethyl ether(2G) as the polar additive, and mixed styrene (S) and isoprene (I) as the monomer, a S/I copolymer was synthesized by reactive extrusion, initiated by organic lithium. It is found by results of ^1H-NMR ,GPC and DMA, that with the adding and increasing of 2G, the content of 3, 4-IP and random styrene of copolymers are increased; the length of PS segments is decreased, and a PS block is on the end of the molecule chains; the Tg of continuous and disperse phases is increased, and the compatibility of different phases is improved.
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