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熔体浇铸的聚丙烯/高密度聚乙烯共混薄膜的形态结构 被引量:2

Morphology of Melt-cast Films of Polypropylene/High-density Polyethylene Blends
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摘要 本文的研究对象是高密度聚乙烯(HDPE)和聚丙烯的熔体共混物,其中聚乙烯的重量百分数分别为0,1,2,3,5和10,文中叙述了熔体浇铸薄膜的制备方法和用TEM对它们进行的形态研究。当HDPE含量为10%或5%时,共混体系分离成两相。HDPE相的微区尺寸为3000(?)~800(?),微区由一些片晶组成。从我们的实验中可以认为共混物中HDPE的临界浓度应小于5%,而且在熔体中PP和HDPE之间存在一些弱的相互作用。 High-density polyethylene (HDPE) and isotactic polypropylene (PP) were melt-blended in the following percentages of HDPE by weight: 0, 1, 2, 3, 5 and 10. This paper describes the preparation of such melt-cast films and the investigation of their morphology by TEM. The system of blend segregates into two discrete phases in blends containing 10% or 5% of HDPE. The phase of HDPE appears domains with sizes of 3000(?)-800(?) HDPE domains const of some lamella. In the case of PP-HDPE blends it seems that the critical concentra- tion of HDPE is≦5%. Little interaction between polypropylene and polyethylene occurs du- ring melting in our experiments.
出处 《电子显微学报》 CAS CSCD 1989年第1期15-21,共7页 Journal of Chinese Electron Microscopy Society
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  • 1Werner Wenig,Kurt Meyer. Investigation of the crystallization behaviour of polypropylene — polyethylene blends by optical microscopy[J] 1980,Colloid and Polymer Science Kolloid - Zeitschrift & Zeitschrift für Polymere(9):1009~1014

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