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Comonomer Effect on the Thermal, Morphological and Mechanical Properties of Poly(ethylene- co -octene)/Poly(ethylene- co -vinyl acetate) Blends
Polymer Science, Series A ( IF 1 ) Pub Date : 2020-12-28 , DOI: 10.1134/s0965545x20060073
Al Mamun , Rizwan Mahmood

Abstract

The blends of ethylene-octene copolymers with octene content of 15 and 3 wt % and ethylene-vinyl acetate copolymer were studied by thermogravimetric analysis, differential scanning calorimetry, atomic force microscopy, and tensile experiments. Thermal behavior reveals that the addition of ethylene-octene copolymer improves the thermal stability of ethylene-vinyl acetate copolymer. Two single crystallization temperatures were detected. The surface morphology shows thin and elongated crystallites of neat ethylene-octene copolymer containing 3 wt % of octene and a bulky, random morphology for both the neat ethylene-octene copolymer containing 15 wt % of octane and ethylene-vinyl acetate copolymer, where a perfect mixture of aforementioned structures shows for 50/50 blend, with the immiscible domains of both ethylene-octene and ethylene-vinyl acetate copolymers. Additionally, the surface roughness of 50/50 blends is in between of the neat copolymers. All the experimental data confirms the immiscible nature of the blends. The mechanical properties of the binary blends were found to be between the values of the corresponding neat components.



中文翻译:

共聚单体对聚(乙烯-共-辛烯)/聚乙烯(乙烯-共-乙酸乙烯酯)共混物的热,形态和力学性能的影响

摘要

通过热重分析,差示扫描量热法,原子力显微镜和拉伸试验研究了辛烯含量为15和3 wt%的乙烯-辛烯共聚物与乙烯-乙酸乙烯酯共聚物的共混物。热行为表明,乙烯-辛烯共聚物的添加改善了乙烯-乙酸乙烯酯共聚物的热稳定性。检测到两个单结晶温度。表面形态显示了含有3 wt%辛烯的纯乙烯-辛烯共聚物的细而细长的微晶,以及含有15 wt%辛烷的纯乙烯-辛烯共聚物和乙烯-乙酸乙烯酯共聚物的大体积,随机形态上述结构的混合物显示出50/50的混合物,具有乙烯-辛烯和乙烯-乙酸乙烯酯共聚物的不混溶域。另外,50/50共混物的表面粗糙度介于纯共聚物之间。所有的实验数据证实了共混物的不混溶性。发现二元共混物的机械性能介于相应的纯组分的值之间。

更新日期:2020-12-28
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