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Characterization of hot‐pressed films from superfine wool powder
Author(s) -
Wang Xin,
Xu Weilin,
Wang Xungai
Publication year - 2008
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.27738
Subject(s) - materials science , wool , crystallinity , thermogravimetry , differential thermal analysis , composite material , thermal analysis , scanning electron microscope , hot pressing , fourier transform infrared spectroscopy , chemical engineering , thermal , diffraction , optics , engineering , physics , meteorology
In this study, superfine wool powder was plasticized with glycerol and hot‐pressed into a film. Scanning electron microscopy photos showed that the superfine wool powder could be molded into a smooth film and that the wool powder was distributed evenly in the cross section of the film. Fourier transform infrared analysis revealed no substantial changes in the chemical structure of the wool powder after hot pressing, but the absorbing peaks of glycerol were found in the spectrum. X‐ray diffraction analysis showed that the overall crystallinity increased after the wool powder was hot‐pressed into film. Thermogravimetry (TG) analysis indicated that the thermal stability of the hot‐pressed film decreased. A transition point appeared in the TG curve of the wool hot‐pressed film as glycerol was added. The differential thermal analysis curve of the film showed sharp absorbing peaks similar to that of wool powder. With increasing glycerol content, the film showed increasing ductility and softness. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008