期刊
POLYMER
卷 42, 期 17, 页码 7335-7342出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0032-3861(01)00197-5
关键词
maleic anhydride grafting; PET-SBR blends; rheology of polymer blends
The theological properties of polyethylene terephthalate (PET)-styrene butadiene rubber (SBR) blends are studied in this work. The shear viscosity was measured in a special capillary device mounted on an injection-molding machine, which provides data on pressure and flow rate. Comparison of the viscosity of the PET-SBR physical blend with that of the blend of PET with maleic anhydride-functionalized SBR (SBRg) provides information on the effect of grafted maleic anhydride chains at the rubber-thermoplastic interface on the theological properties of the blend. Shear viscosity is a function of the amount of compatibilizer and applied shear stress present in the preparation of the blends. A reduction in the particle size due to increasing screw speed was correlated with a reduction in the shear viscosity and an increase in the impact properties of the blend. (C) 2001 Elsevier Science Ltd. All rights reserved.
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