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

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dc.contributor.authorMaeda, Keisuke
dc.contributor.authorYamada, Koji
dc.contributor.authorYamada, Kazushi
dc.contributor.authorKotaki, Masaya
dc.contributor.authorNishimura, Hiroyuki
dc.date.accessioned2018-07-13T09:33:10Z
dc.date.available2018-07-13T09:33:10Z
dc.date.issued2016-01
dc.description.abstractIn 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.en_US
dc.identifier.citationOpen Journal of Organic Polymer Materials, 2016, 6, 1-10en_US
dc.identifier.issn2164-5752
dc.identifier.urihttp://dx.doi.org/10.4236/ojopm.2016.61001
dc.identifier.urihttp://hdl.handle.net/123456789/1911
dc.language.isoenen_US
dc.publisherScientific Researchen_US
dc.subjectPolypropyleneen_US
dc.subjectThin-Wall Injection Moldingen_US
dc.subjectMolecular Weight and Molecular Weight Distributionen_US
dc.subjectSkin-Core Structureen_US
dc.subjectShear Strength Distributionen_US
dc.titleEffect of Molecular Weight and Molecular Distribution on Skin Structure and Shear Strength Distribution near the Surface of Thin-Wall Injection Molded Polypropyleneen_US
dc.typeArticleen_US
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