POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*
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POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*
POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*
高分子科学(英文版)1999年17卷第3期 页码:215-220
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纸质出版:1999-06-20
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POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*[J]. 高分子科学(英文版), 1999,17(3):215-220.
POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*[J]. 1999, 17(3): 215-220.
POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*[J]. 高分子科学(英文版), 1999,17(3):215-220.DOI:
POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*[J]. 1999, 17(3): 215-220.DOI:
POLYMETHYLMETHACRYLATE FILMS IN THE STATE OF HIGH GLOBAL CHAIN ORIENTATION BUT NEARLY RANDOM SEGMENTAL ORIENTATION*
PMMA films in the high global chain orientation and nearly random segmental orientation(GOLR) state were prepared by uni-axially drawing at temperatures 20~30℃ above its glass transitiontempefature
T_g
and their isotropic and anisotropic properties were studied. Experimental results show thatthis kind of amorphous state
the GOLR state
is nearly isotropic in optical birefringence
IR-dichroism andX-ray diffraction patterns
but is very anisotropic in behaviors of thermal expansion
solvent-swelling and stress-strain.
Abstract
PMMA films in the high global chain orientation and nearly random segmental orientation(GOLR) state were prepared by uni-axially drawing at temperatures 20~30℃ above its glass transitiontempefature
T_g
and their isotropic and anisotropic properties were studied. Experimental results show thatthis kind of amorphous state
the GOLR state
is nearly isotropic in optical birefringence
IR-dichroism andX-ray diffraction patterns
but is very anisotropic in behaviors of thermal expansion
solvent-swelling and stress-strain.
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