Radiation effects on poly(propylene) (PP)/ethylene–vinyl acetate copolymer (EVA) blends
Radiation effects on poly(propylene) (PP)/ethylene–vinyl acetate copolymer (EVA) blends
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DOI：
10.1002/app.11365
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发表时间：
2002-12
影响因子：
3
通讯作者：
Siqin Dalai;Wenxiu Chen
中科院分区：
文献类型：
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作者：
Siqin Dalai;Wenxiu Chen
研究了聚丙烯/乙烯-醋酸乙烯酯共聚物（PP/伊娃）共混物的辐射效应。随着伊娃含量的增加，PP/伊娃共混物的辐射交联效果增强。当PP/伊娃共混物中伊娃含量≥50%时，这种效应在空气中γ射线辐照下显著。讨论了这一现象与PP/伊娃共混物的相容性、形态结构和热性能的关系。结果表明，PP/伊娃共混体系的相容性、无定形区含量的增加以及伊娃含量的增加对PP/EVA共混体系的增韧效果有影响。采用“逐步分析法”和热重分析法定量研究了PP/伊娃共混物辐照交联或降解的可能机理。© 2002 Wiley Periodicals，Inc.应用聚合物科学杂志86：3420-3424，2002
Radiation effects on poly(propylene)/ethylene–vinyl acetate copolymer (PP/EVA) blends are discussed. Increasing the EVA content enhanced the crosslinking effect of radiation in PP/EVA blends. This effect was significant when the EVA content was ≥50% in PP/EVA blends that were exposed to γ-ray irradiation in air. This phenomenon is discussed in relation to the compatibility, morphology, and thermal properties of PP/EVA blends. The results indicate that the effect is dependent on the compatibility, the increase in the amorphous region content, and the EVA content in PP/EVA blends. The possible mechanism of radiation crosslinking or degradation in irradiated PP/EVA blends was studied quantitatively by a novel method, a “step analysis” process, and thermal gravimetric analysis. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 3420–3424, 2002