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Conformational development of polylactide films induced by uniaxial drawing

Title
Conformational development of polylactide films induced by uniaxial drawing
Author
김성훈
Keywords
polylactide; uniaxial drawing; strain-induced crystallization; molecular orientation; mechanical properties
Issue Date
2014-07
Publisher
WILEY-BLACKWELL
Citation
Polymer international,63권, 7호,1247p ~ 1253p
Abstract
Uniaxially drawn polylactide (PLA) films were prepared using various draw ratios (2, 3, 4 and 4.5) at a constant draw rate and temperature. It was confirmed that the conformational structure of the PLA films prepared using the uniaxial drawing process was composed of the alpha'-phase form. The conformational structure deformation of alpha'-phase PLA films, according to the various draw ratios used, was investigated in terms of strain-induced crystalline behavior and molecular orientation analysis. It is of utmost importance to confirm the alpha'-phase structural deformation caused by the uniaxial drawing process because it directly relates to the characteristics of PLA films. The conformational structure deformations of the alpha'-phase, created by uniaxial drawing, led to improved mechanical properties, as evident from mechanical testing and dynamic mechanical analyses results. (C) 2013 Society of Chemical Industry
URI
http://onlinelibrary.wiley.com/doi/10.1002/pi.4630/abstracthttp://hdl.handle.net/20.500.11754/48678
ISSN
0959-8103; 1097-0126
DOI
10.1002/pi.4630
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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