Premium
Blend composition dependence of the compatibilizing efficiency of graft copolymers for immiscible polymer blends
Author(s) -
Zhang CaiLiang,
Feng LianFang,
Gu XuePing,
Hoppe Sandrine,
Hu GuoHua
Publication year - 2010
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21715
Subject(s) - copolymer , materials science , polystyrene , polymer , polyamide , polymer chemistry , polymer blend , phase (matter) , chemical engineering , compatibilization , polymer science , composite material , chemistry , organic chemistry , engineering
This work is concerned with the dependence of the compatibilizing efficiency of graft copolymers on the composition of immiscible polymer blends. A series of graft copolymers of polystyrene (PS) and polyamide 6 (PA6), denoted as PS‐ g ‐PA6, with different molecular structures were used as compatibilizers. The PS‐ g ‐PA6 was more efficient for the PS/PA6 (80/20) blend than for the PS/PA6 (20/80) one, indicating that a graft copolymer whose backbone and grafts match the matrix and the disperse phase polymers, respectively, has higher compatibilizing efficiency. This is in disagreement with the literature. Moreover, whatever the blend composition, for PS‐ g ‐PA6 graft copolymers with the same backbone and the same number of grafts per backbone, the longer the grafts, the higher their compatibilizing and stabilizing efficiency; for a given backbone/graft mass ratio, the longer the grafts and concomitantly the smaller the number of grafts per backbone, the higher the compatibilizing and stabilizing efficiency of the graft copolymer. POLYM. ENG. SCI., 2010. © 2010 Society of Plastics Engineers