O. V. Arzhakova, A. Yu. Yarysheva, A. I. Nazarov, A. A. Dolgova, A. L. Volynskii
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引用次数: 0
Abstract
A novel approach to the preparation of a hard-elastic polymeric material based on ultra-high-molecular-weight polyethylene using the strategy of crazing of polymers was proposed. This approach comprises the process of deformation of the pristine films of ultra-high-molecular-weight polyethylene via the environmental intercrystallite crazing mechanism and the subsequent low-temperature spontaneous strain recovery upon stress relaxation. As a result, the material acquires new properties typical of hard-elastic materials: restoration of the porous structure with pore sizes in the nanometer range (less than 10 nm) after the secondary deformation in air up to ~20 vol %, high reversibility of deformation (50–85%), and the effect of opening and closing of pores under cyclic loading. The mechanism of this phenomenon was proposed, and the fields of practical applications of this kind of mechanosensitive material were indicated.
期刊介绍:
Doklady Physical Chemistry is a monthly journal containing English translations of current Russian research in physical chemistry from the Physical Chemistry sections of the Doklady Akademii Nauk (Proceedings of the Russian Academy of Sciences). The journal publishes the most significant new research in physical chemistry being done in Russia, thus ensuring its scientific priority. Doklady Physical Chemistry presents short preliminary accounts of the application of the state-of-the-art physical chemistry ideas and methods to the study of organic and inorganic compounds and macromolecules; polymeric, inorganic and composite materials as well as corresponding processes. The journal is intended for scientists in all fields of chemistry and in interdisciplinary sciences.