Adjusting Phase Morphology and Mechanical Properties of the Polymer Binary Blends by Supercritical CO2

被引：0

作者：

Yan H. ^{[1
]}

Zheng X. ^{[1
]}

Wang F. ^{[1
]}

Bao J. ^{[1
]}

Wang S. ^{[2
]}

机构：

[1] School of Materials Science and Chemical Engineering, Ningbo University, Ningbo

[2] National Center for International Research of Micro-nano Molding Technology & Key Laboratory for Micro Molding Technology of Henan Province, Zhengzhou University, Zhengzhou

来源：

Cailiao Daobao/Materials Review | 2018年 / 32卷 / 06期

关键词：

CO[!sub]2[!/sub] annealing; Ethylene-propylene-diene monomer (EPDM); Mechanical property; Phase morphology; Polypropylene; Supercritical;

D O I：

10.11896/j.issn.1005-023X.2018.12.022

中图分类号：

学科分类号：

摘要：

The dominating influence of phase morphology onto the final properties of polymer blends is proverbial. We herein employed supercritical carbon dioxide (CO2) as the solution to adjust the phase morphology of polypropy-lene (PP)/ethylene-propylene-diene monomer (EPDM) blends, whose mechanical behavior was studied by using dynamic mechanical analysis (DMA). The results showed that the CO2 treatment, owing to the carbon dioxide's solubility difference and swelling ratio difference in PP and EPDM matrices, could causes substantial increment of EPDM volume fraction, and in consequence, facilitates the transition of EPDM phase morphology in the polymer blends from an original sea-island structure to a co-continuous structure. The DMA test observed an inconspicuous performance change of the vacuum annealed blending material but definite storage modulus and loss modulus improvements of the supercritical CO2 annealed PP/EPDM blends with the same EPDM content, indicating the promotion of both toughness and inflexibility. © 2018, Materials Review Magazine. All right reserved.

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页码：2057 / 2061

页数：4

共 16 条

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