Y. Fu, Haihe Song, Chao Zhou
2013
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0
Influential Citations
22
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Journal
Polymer Composites
Abstract
The performance of glycidyl methacrylate (GMA) functionalized acrylonitrile-butadiene-styrene core–shell impact modifiers (R-ABS) with varied GMA content, crosslinking degree of rubber phase, core–shell ratio, and initiator type in toughening of poly(butylene terephthalate) (PBT) was investigated. Results show that 1 wt% GMA is sufficient to induce a pronounced improvement of the impact strength of PBT and too much GMA induces the crosslinking of R-ABS. Divinylbenzene improves the crosslinking degree of polybutadiene and decreases its cavitation ability. The brittle-ductile transition shifts to higher R-ABS content. When the core–shell ratio of R-ABS is beyond 70/30, compatibilization reaction is not sufficient to retard the agglomeration of core–shell particles. R-ABS particles with the core–shell ratio between 50/50 and 60/40 are suitable. Initiator type can influence the internal structure of R-ABS. For R-ABS prepared with azobisisobutyronitrile (AIBN) as initiator, big subinclusion structure decreases its toughening ability. R-ABS prepared with redox initiator shows better toughening behavior. POLYM. COMPOS., 2013. © 2012 Society of Plastics Engineers