Novel reactive compatibilization strategy on immiscible polypropylene and polystyrene blend

作者：Hung Chen Jui; Chuang Hung Yang; Chang Feng Chih^*

来源：Journal of Applied Polymer Science, 2008, 107(2): 831-839.

DOI：10.1002/app.25201

• polymer blends
• reactive compatibilization
• polypropylene
• polystyrene

Polypropylene (PP) and polystyrene (PS) are immiscible and incompatible. Since both PP and PS components possess no reactive functional group, reactive compatibilization of a PP/PS blend is impossible unless certain reactive functional groups are imparted to either PP or PS. In this study we provide a simple approach to reactively compatibilize the nonreactive PP/PS blend system by physically functionalizing PP and PS with the addition of maleic anhydride grafted PP (PP-g-MA) and styrene maleic anhydride random copolymer (SMA), respectively. An epoxy monomer, serving as a coupler and possessing four epoxy groups able to react with the maleic anhydride of PP-g-MA and SMA, was then added during melt blending. Observations of the finer PS domain sizes and improved mechanical properties support the plausibility of reactive compatibilization of this nonreactive PP/PS blend by combining physically functionalized PP and PS with tetra-glycidyl ether of diphenyl dian-Lino methane (TGDDM) in a one-step extrusion process.

• 出版日期2008-1-15
• 单位中国科学院长春应用化学研究所