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Citation: Yu Qiang, Lin Mingde, Shi Tao, Wang Guang. Reactive Extrusion Blending of Polystyrene with Polyethylene[J]. Chinese Journal of Applied Chemistry, ;1999, 16(3): 53-56. shu

Reactive Extrusion Blending of Polystyrene with Polyethylene

1.
Department of Materials Engineering, Jiangsu Institute of Petrochemical Technology, Changzhou 213016

Received Date: 9 October 1998
Available Online: 1 March 1999

Polystyrene(PS) and polyethylene(LDPE, HDPE, LLDPE) have been blended by reactive extrusion in the presence of dicumyl peroxide(DCP). The melt flow rate values showed that PE macromolecular radicals mainly experienced coupling reaction with each other, while PS preferred degradation, giving rise to chain scission. Addition of polyfunctional monomers during the extrusion could retard the degradation of PS. The results of solvent extraction, IR and DSC measurements of the blends showed that DCP and trihydroxymethylpropane trimethylacrylic acid together could induce an interfacial grafting of PS and PE, that promoted the compatibility of PS/LLDPE blend.
- polystyrene,
- polyethylene,
- reactive extrusion blending,
- polyfunctional monomer
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