Preparation of a New Hard-Elastic Polymeric Material Based on Ultra-High-Molecular-Weight Polyethylene

IF 1.1 4区 化学 Q4 CHEMISTRY, PHYSICAL Doklady Physical Chemistry Pub Date : 2023-08-11 DOI:10.1134/S0012501623600067
O. V. Arzhakova, A. Yu. Yarysheva, A. I. Nazarov, A. A. Dolgova,  A. L. Volynskii
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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.

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基于超高分子量聚乙烯的新型硬弹性高分子材料的制备
提出了一种以超高分子量聚乙烯为基材,利用聚合物的裂纹策略制备硬弹性高分子材料的新方法。该方法包括超高分子量聚乙烯原始薄膜通过环境晶间擦伤机制的变形过程以及随后的应力松弛低温自发应变恢复过程。结果表明,该材料获得了典型的硬弹性材料的新性能:在空气中二次变形高达~20 vol %后,恢复了孔径在纳米级(小于10 nm)的多孔结构,变形的可逆性高(50-85%),并且在循环加载下具有开闭孔的效果。提出了这种现象的机理,并指出了这种机械敏感材料的实际应用领域。
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来源期刊
Doklady Physical Chemistry
Doklady Physical Chemistry 化学-物理化学
CiteScore
1.50
自引率
0.00%
发文量
9
审稿时长
6-12 weeks
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.
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