Structural study of oriented non-crystalline PET by CDF method

The two-dimensional wide angle X-ray scattering (WAXS) intensities of oriented non-crystalline polyethylene terephthalate (PET) films extended umaxially are collected by the symmetrical transmission method; he-sides,the overlapped non-crystalline peaks at WAXS intensity curves,I(K) obtained at diffe...

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Bibliographic Details
Published in:Science China. Chemistry 1997-06, Vol.40 (3), p.254-260
Main Author: 韩甫田 宾仁茂 陈济舟
Format: Article
Language:English
Subjects:
cylindrical
distribution
Distribution functions
function
mesophase
oriented
polyethylene
Polyethylene terephthalate
polymers
scattering
structure
terephthalate
X-ray
X-ray scattering
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Summary:The two-dimensional wide angle X-ray scattering (WAXS) intensities of oriented non-crystalline polyethylene terephthalate (PET) films extended umaxially are collected by the symmetrical transmission method; he-sides,the overlapped non-crystalline peaks at WAXS intensity curves,I(K) obtained at different azimuthal angles are also separated by computer,resulting in two peaks caused by interchain atomic scattering in the reciprocal space,KA(K=0.122),KB(K=0.171),and the other two peaks from intracham atomic scattering,Kc(K=0.310) and KD(K=0.548); their cylindrical distribution functions (CDF),CDF(R,α) in the real space are further calcu lated from the intensity functions,IE(K) using sampled transforms,thereof arising in turn the peaks in the real space as,RA(R=0.658),RB(R=0.456),RC(R=0.253) and RD(R=0.152),corresponding to KA,KP,K,and KD The equivalent relationships and distribution characteristics of the above-mentioned corresponding peaks in the reciprocal and real space,as well as their sources of struc
ISSN:1674-7291
1006-9291
1869-1870
1862-2771
DOI:10.1007/BF02877726