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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10717

Title: Influences of polypropylene grafted to SiO_2 nanoparticles on the crystallization behavior and mechanical properties of polypropylene/SiO_2 nanocomposites
Authors: Umemori, Masaki
Taniike, Toshiaki
Terano, Minoru
Keywords: Polypropylene
Nanocomposites
Crystallization
Mechanical properties
Issue Date: 2011-09-09
Publisher: Springer
Magazine name: Polymer Bulletin
Volume: 68
Number: 4
Start page: 1093
End page: 1108
DOI: 10.1007/s00289-011-0612-y
Abstract: Influences of polypropylene (PP) grafted to SiO_2 nanoparticles (7 nm) were studied on the crystallization behavior and the mechanical properties of PP/SiO_2 nanocomposites. PP for the matrix and grafting was synthesized in order to have an identical primary structure, aiming at their co-crystallization and resulting reinforcement of filler-matrix interfaces. The grafted PP chains improved the dispersion of SiO_2, and notably accelerated nucleation in crystallization. It was plausible that the grafted chains whose one chain end was pinned to SiO_2 became nuclei of the crystallization (co-crystallization between the matrix and grafted chains), thus directly bridging between the matrix and SiO_2 nanoparticles. The Young’s modulus and tensile strength were most improved by the grafted PP chains at low filler contents such as 2.3 wt%, whose origin was attributed to effective load transfer to SiO_2 through the co-crystallization-mediated bridging.
Rights: This is the author-created version of Springer, Masaki Umemori, Toshiaki Taniike, Minoru Terano, Polymer Bulletin, 68(4), 2011, 1093-1108. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/s00289-011-0612-y
URI: http://hdl.handle.net/10119/10717
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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