Citation: HU Jiachong, JIN Yiming. WAXD STUDY OF POLYMORPHOUS ISOTACTICPOLYPROPYLENE BY COMPUTER PEAK-RESOLUTION METHOD*[J]. Chinese Journal of Polymer Science, ;1985, 3(3): 204-215. shu

WAXD STUDY OF POLYMORPHOUS ISOTACTICPOLYPROPYLENE BY COMPUTER PEAK-RESOLUTION METHOD*

HU Jiachong ,
JIN Yiming

Received Date: 18 February 1985

Polymorphous i-PP containing a and β phases were studied by WAXD and computer peak-resolution method (CPRM). The asymmetric Gaussian-Cauchy functions (a-GC) were adoptedto fit the profiles of both amorphous and crystalline peaks. For the crystalline peaks, the fitting resultsof a-GC are better than the symmetric-GC; for the amorphous peaks, they are better than polynomialand exponential functions, etc. Using the retarded least-square procedure (RLSP) on microcom-puter the results of peak-resolution are rather satisfatory.For the polymorphous samples containing αand β phases,the relations between phase-state,crystallinity,crystalline size,the ratio of α,β relative content and the crystallization temperature Tc were studied by CPRM.The ratio of α,β relative contents obtained by CPRM and Turner-Jones eq have been carefully compared.There are many improvements in this work.A simple estimation method of WAXD peak areas,both for amorphous and crystalline peaks,is suggested.
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