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首页> 外文期刊>Journal of Applied Polymer Science >In situ fibrillation of poly(trimethylene terephthalate) in polyolefin elastomer through multistage stretching extrusion
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In situ fibrillation of poly(trimethylene terephthalate) in polyolefin elastomer through multistage stretching extrusion

机译：通过多级拉伸挤出法在聚烯烃弹性体中原位原纤化聚对苯二甲酸丙二醇酯

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摘要

Polyolefin elastomer (POE)/poly(trimethylene terephthalate) (PTT) microfibrillar composites (MFCs) were successfully fabricated by multistage stretching extrusion with an assembly of laminating-multiplying elements (LMEs). The morphologies of these novel materials were greatly influenced by the compositions. The number of microfibrils increased with increasing PTT concentration, as revealed by scanning electron microscopy. The tensile strength was the highest along the extrusion direction at the weight ratio of 85/15. Moreover, dynamic rheological results showed that the storage modulus, loss modulus, and complex viscosity were the highest while the tan delta was the lowest for MFCs prepared at the weight ratio 85/15 compared with the neat POE, especially at low frequency (omega<1 rad/s). In addition, the PTT microfibrils had more effect on the rheological properties compared to the PTT particles. However, the differences became negligible at high frequency (omega>100 rad/s). (C) 2016 Wiley Periodicals, Inc.
机译：聚烯烃弹性体（POE）/聚对苯二甲酸丙二醇酯（PTT）的微原纤复合材料（MFCs）是通过多层拉伸挤出和层压倍增元件（LMEs）组件成功制成的。这些新颖材料的形态受到组成的很大影响。如通过扫描电子显微镜所揭示的，微纤维的数目随着PTT浓度的增加而增加。重量比为85/15时，沿挤出方向的拉伸强度最高。此外，动态流变结果表明，与纯POE相比，重量比为85/15的MFC制备的MFC的储能模量，损耗模量和复数粘度最高，而tanδ最低，尤其是在低频下（omega < 1 rad / s）。此外，与PTT颗粒相比，PTT微纤维对流变性能的影响更大。但是，在高频（Ω> 100 rad / s）时，差异可以忽略不计。 （C）2016威利期刊公司

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