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Effects of crystal phase transformation on tensile properties of polybutene‐1/cellulose composites
Author(s) -
Nakatani Hisayuki,
Yamada Yuuta,
Takahashi Yuuta,
Terano Minoru
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34423
Subject(s) - polybutene , materials science , ultimate tensile strength , composite material , lamella (surface anatomy) , phase (matter) , spherulite (polymer physics) , tetragonal crystal system , scanning electron microscope , crystallization , crystal (programming language) , crystallinity , embrittlement , chemical engineering , chemistry , polymer , organic chemistry , computer science , engineering , programming language
Morphologies and tensile properties of polybutene‐1 (PB), PB/fibrous cellulose (FC), and the PB/silanized FC with 3‐aminopropyltrimethoxysilane (APTMS) composites were studied. The scanning electron microscope micrographs exhibited the adherent PB parts on the FC and the silanized FC, suggesting that there was a certain affinity of PB to them. The spherulite observation suggested that there existed a secondary bonding between the PB and the FC or the silanized FC. These tensile properties were remarkably affected by the PB crystal phase transformation from the metastable tetragonal (II) to the stable hexagonal (I) phase. The transformation caused the ageing embrittlement even at r.t. In particular, the ageing embrittlement rate of the PB/silanized FC was much higher than other samples. Because the silanized FC became the excellent nucleating agent for the PB crystallization, the PB/silanized FC was found to easily form the thicker lamella having a higher probability of containing a crystal defect to serve as a starting point of the transformation. The higher transformation rate depended on the thicker lamella formation rate and its amount. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011