Enhanced Ductility of PEEK thin film with self-assembled fibre-like crystals.
Enhanced Ductility of PEEK thin film with self-assembled fibre-like crystals.
复制标题
用自组装的纤维样晶体增强了Peek薄膜的延展性。
DOI：
10.1038/s41598-018-19537-1
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发表时间：
2018-01-22
影响因子：
4.6
通讯作者：
Ghita O
中科院分区：
文献类型：
--
作者：
Wang Y;Chen B;Evans K;Ghita O
聚醚醚酮（PEEK）是一种耐高温聚合物材料，以其优异的耐化学性、高强度和韧性而闻名。作为一种半结晶聚合物，PEEK在长结晶时间和温度下会变得非常脆，这也得益于其化学结构中高含量的刚性苯环。本文提出了一种简单的淬火结晶法制备聚醚醚酮薄膜，在薄膜表面形成了一种新型的纤维状晶体结构。这些淬火结晶的膜显示出较高的断裂伸长率时，与常规的熔融结晶的薄膜纳入球晶晶体相比，而两种类型的膜（淬火结晶和常规熔体）的拉伸强度保持相同。使用显微镜进行的断裂分析揭示了一个有趣的微观结构，其演变作为退火时间的函数。基于这些结果，晶体生长机制描述的纤维状晶体的淬火结晶膜的表面上的发展提出。
Poly Ether Ether Ketone (PEEK) is a high temperature polymer material known for its excellent chemical resistance, high strength and toughness. As a semi-crystalline polymer, PEEK can become very brittle during long crystallisation times and temperatures helped as well by its high content of rigid benzene rings within its chemical structure. This paper presents a simple quench crystallization method for preparation of PEEK thin films with the formation of a novel fibre-like crystal structure on the surface of the films. These quenched crystallised films show higher elongation at break when compared with conventional melt crystallised thin films incorporating spherulitic crystals, while the tensile strength of both types of films (quenched crystallised and conventional melt) remained the same. The fracture analysis carried out using microscopy revealed an interesting microstructure which evolves as a function of annealing time. Based on these results, a crystal growth mechanism describing the development of the fibre-like crystals on the surface of the quenched crystallised films is proposed.
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影响因子：
4.6
作者：
CHIVERS, RA;MOORE, DR
通讯作者：
MOORE, DR
影响因子：
4.5
作者：
UEMURA, A;TSUJI, M;KATAYAMA, KI
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3.2
作者：
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影响因子：
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作者：
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通讯作者：
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4.5
作者：
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