文献类型：期刊文献

英文题名：Toughening of Polycarbonate by Core-Shell Latex Particles: Influence of Particle Size and Spatial Distribution on Brittle-Ductile Transition

作者：Xu, Huijun[1,2];Tang, Songchao[1,2];Yang, Long[1,2];Hou, Wenting[1,2]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：48

期号：18

起止页码：1970

外文期刊名：JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS

收录：;EI(收录号：20103913254204);WOS:【SCI-EXPANDED(收录号:WOS:000281569800005)】；

基金：This work is supported by Shanghai Leading Academic Discipline Project (B502) and Shanghai Key Laboratory Project, China (08DZ2230500).

语种：英文

外文关键词：blends; core-shell particles; critical interparticle distance; particle size; polycarbonates; toughness

摘要：The impact toughness of polycarbonate modified with acrylic core-shell latex particles was investigated. Addition of impact modifiers with size ranging from 115.7 to 231.4 nm can result in maximum impact strength. Equations for spatial distribution of modified particles were proposed to associate the interparticle distance with particle size and modifier volume fraction in terms of two possible morphologies, given by T = d[0.91/(phi)(1/3) - 1] or T = d[0.88/(phi)(1/3) - 1]. The influence of particle size on brittle-ductile transition was also studied. The results indicated that critical interparticle distance was not a definitive value and had a narrow region. Moreover, there existed a linear relationship between critical interparticle distance and modifier size, that is, critical interparticle distance would enlarge with the increasing of core-shell particle size. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1970-1977, 2010