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http://dx.doi.org/10.1007/s10118-011-1049-3

has been cited by the following article:

• TITLE: Effect of Molecular Weight and Molecular Distribution on Skin Structure and Shear Strength Distribution near the Surface of Thin-Wall Injection Molded Polypropylene

  AUTHORS: Keisuke Maeda, Koji Yamada, Kazushi Yamada, Masaya Kotaki, Hiroyuki Nishimura

  KEYWORDS: Polypropylene, Thin-Wall Injection Molding, Molecular Weight and Molecular Weight Distribution, Skin-Core Structure, Shear Strength Distribution

  JOURNAL NAME: Open Journal of Organic Polymer Materials, Vol.6 No.1, January 7, 2016

  ABSTRACT: In this study, the relationship between skin structure and shear strength distribution of thin-wall injection molded polypropylene (PP) molded at different molecular weight and molecular distribution was investigated. Skin-core structure, cross-sectional morphology, crystallinity, crystal orientation, crystal morphology and molecular orientation were evaluated by using polarized optical microscope, differential scanning calorimeter, X-ray spectroscopic analyzer and laser Raman spectroscopy, respectively, while the shear strength distribution was investigated using a micro cutting method called SAICAS (Surface And Interfacial Cutting Analysis System). The results indicated that the difference of molecular weight and molecular weight distribution showed own skin layer thickness. Especially, high molecular weight sample showed thicker layer of the lamellar orientation and molecular orientation than low molecular weight sample. In addition, wide molecular distribution sample showed large crystal orientation layer.