Structure-sensitive film materials based on polyvinyl alcohol compositions with polyacids

Tatjana G. Lazareva; Irina Aleksandro Iljushenko

doi:10.1117/12.209820

22 May 1995 Structure-sensitive film materials based on polyvinyl alcohol compositions with polyacids

Tatjana G. Lazareva, Irina Aleksandro Iljushenko

Proceedings Volume 2441, Smart Structures and Materials 1995: Smart Materials; (1995) https://doi.org/10.1117/12.209820
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

The influence of polyacidic additives (silicotungstic acid -- STA, carboxymethylcellulose -- Na-CMC, polymethacrylic acid -- PMA, polyacrylic acid -- PAA) on the molecular mobility of film composition based on polyvinyl alcohol (PVA) in the temperature range 20 - 200 degree(s)C has been evaluated. It has been concluded that interpolymer complexes are formed due to hydrogen bonding of the PVA and polyacidic additive molecules, which results in the change of the PVA stereoregularity. The formation of the complexes depends on the type and concentration of the polyacidic additive, the process of (alpha) -relaxation and, in a certain concentration range of the additive, increases the molecular mobility of the kinetic segments surrounding the complex. The influence of short-term UV-irradiation on the structure and properties of such materials has been investigated. A possibility of the reversible change of molecular mobility and stereoregularity of the examined compositions as a result of short-term UV-irradiation has been established. Introduction of polyacids into the PVA structure gives rise to the electrosensitivity, i.e., the ability to change structure under the action of an electric field. In this case the distinguishing feature is the relation between the molecular mobility and electrosensitivity in the range of parameters where the (alpha) - relaxation occurs.

Citation Download Citation

Tatjana G. Lazareva and Irina Aleksandro Iljushenko "Structure-sensitive film materials based on polyvinyl alcohol compositions with polyacids", Proc. SPIE 2441, Smart Structures and Materials 1995: Smart Materials, (22 May 1995); https://doi.org/10.1117/12.209820

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