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Citation: Zhang Hongfang, Mo Zhishen, Xue Xiaofu, Yin Jinghua. AGGREGATE STRUCTURE OF PVA/PVP BLENDS[J]. Chinese Journal of Applied Chemistry, ;1990, 7(3): 47-50. shu

AGGREGATE STRUCTURE OF PVA/PVP BLENDS

1.
Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received Date: 17 April 1989
Available Online: 12 September 1989
Fund Project:

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 after heat treatment. The plane (101) was observed only at 2θ=11.4°before heat treatment, but over 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's concept of paracrystallinity as well as Cauchy and Gaussian function approximations,parameters of the crystallite size, strain and the second kind lattice distortion have been calculated.
- PVA/PVP blend,
- WAXD,
- structure,
- heat treatment
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