光交联法制备PCL形状记忆薄膜及表征

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Plastics, Rubber and Composites Pub Date : 2021-07-05 DOI:10.1080/14658011.2021.1949534

MingJun Huang, Cheng Zhou, Yijing Ling, Guochen Zhao, L. Dong, J. Shi, Jie Chen

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引用次数: 2

摘要

摘要:本文描述了一种利用紫外线(UV)辐照制备形状记忆聚(ϵ-caprolactone) (PCL)薄膜的简便、环保的方法。二苯甲酮(BP)作为光引发剂与PCL颗粒直接熔融共混，然后熔融压制成膜。然后，通过紫外(λ=365 nm左右)辐照交联得到一系列形状记忆薄膜。对辐照温度对PCL薄膜性能变化的影响进行了序列研究和比较，结果表明，55℃光交联PCL薄膜的凝胶分数、形状记忆性能和拉伸性能明显高于25℃光交联PCL薄膜。研究了光引发剂含量和辐照时间对凝胶分数、形状记忆性能和拉伸性能的影响。认为紫外辐照是制备PCL形状记忆薄膜的有效方法。

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Preparation and characterisation of PCL shape-memory films via photo-crosslinking

ABSTRACT A facile and ecologically friendly method to prepare shape-memory Poly(ϵ-caprolactone) (PCL) films via Ultraviolet (UV) irradiation is described in this work. Benzophenone (BP), as a photoinitiator, was melt-blended with PCL particles directly and then melt-pressed into films. Afterward, a series of shape-memory films were obtained by UV (at around λ=365 nm) irradiation crosslinking. A sequence study and comparison on the properties changes caused by the effect of irradiation temperature was carried out and it turns out that the gel fraction, shape-memory properties and tensile properties of the PCL films, which were photo-crosslinked at 55°C, were significantly higher than that at 25°C. The effect of photoinitiator contents and irradiation time on gel fraction, shape memory properties and tensile properties was also studied. It is considered that UV irradiation is an efficient method to prepare PCL shape-memory films.

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来源期刊

Plastics, Rubber and Composites 工程技术-材料科学：复合

CiteScore

4.10

自引率

0.00%

发文量

审稿时长

4 months

期刊介绍： Plastics, Rubber and Composites: Macromolecular Engineering provides an international forum for the publication of original, peer-reviewed research on the macromolecular engineering of polymeric and related materials and polymer matrix composites. Modern polymer processing is increasingly focused on macromolecular engineering: the manipulation of structure at the molecular scale to control properties and fitness for purpose of the final component. Intimately linked to this are the objectives of predicting properties in the context of an optimised design and of establishing robust processing routes and process control systems allowing the desired properties to be achieved reliably.