AGGREGATE STRUCTURE OF PVA/PVP BLENDS

Chinese Journal of Applied Chemistry ›› 1990, Vol. 0 ›› Issue (3): 47-50.

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AGGREGATE STRUCTURE OF PVA/PVP BLENDS

Zhang Hongfang, Mo Zhishen, Xue Xiaofu, Yin Jinghua

Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received:1989-04-17 Revised:1989-09-12 Published:1990-06-10 Online:1990-06-10

Abstract

Abstract: The structure of poly(vinyl alcohol)(PVA)/poly(vinyl pyrrolidone)(PVP)blends of va-rious compositions has been studied by wide angle X-ray diffractometry before and afterheat treatment. The plane(101)was observed only at 2θ= 11.4°before heat treatment, butover four planes were found after heat treatment. The degree of crystallinity and crystal-lite size were decreased with increasing the PVP content in blends. Applying Hosemann’sconcept of paracrystallinity as well as Cauchy and Gaussian function approximations,parameters of the crystallite size, strain and the second kind lattice distortion have beencalculated.

Key words: PVA/PVP blend, WAXD, structure, heat treatment

Zhang Hongfang, Mo Zhishen, Xue Xiaofu, Yin Jinghua. AGGREGATE STRUCTURE OF PVA/PVP BLENDS[J]. Chinese Journal of Applied Chemistry, 1990, 0(3): 47-50.

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AGGREGATE STRUCTURE OF PVA/PVP BLENDS

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