Design of biodegradable blends based on PLA and PCL: From morphological, thermal and mechanical studies to shape memory behavior
Design of biodegradable blends based on PLA and PCL: From morphological, thermal and mechanical studies to shape memory behavior
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DOI：
10.1016/j.polymdegradstab.2016.03.037
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发表时间：
2016-10-01
影响因子：
5.9
通讯作者：
Peponi, Laura
中科院分区：
文献类型：
--
作者：
Navarro-Baena, Ivan;Sessini, Valentina;Peponi, Laura
共混市售均聚物代表了低成本和易于扩大规模的方法，以将原始均聚物的使用扩展到工业水平。实际上，通过挤出加工共混物是工业中遵循的通常解决方案。然而，通常聚合物共混物是不混溶的，引起相分离，其可以是宏观、微米或纳米尺度的，这取决于聚合物以及加工条件，影响共混物的最终性质。因此，本文旨在研究基于不同浓度的聚乳酸（PLA）和聚己内酯（PCL）的可生物降解共混物的形状记忆行为。一个完整的热和机械性能的共混物进行，相关的结果与观察到的形态。此外，进行了两种不同的生物降解研究，以将每种均聚物的作用与可生物降解的共混物的降解行为相关联。(C)2016爱思唯尔有限公司版权所有
Blending commercial homopolymers represents a low cost and an easy scalable process to extend the use of the pristine homopolymers to an industrial level. Actually, the processing of blends by extrusion is the usual solution followed in the industry. However, commonly polymer blends are immiscible, provoking phase separation, which can be in the macro, micro or nano scale, depending on the polymers as well as on the processing conditions, affecting the final properties of the blends. Therefore, this paper aims to study the shape memory behavior in biodegradable blends based on poly(lactic acid) (PLA) and poly(epsilon-caprolactone) (PCL) in different concentrations. A completely thermal and mechanical characterization of the blends was performed, correlating the results with the observed morphology. In addition, two different biodegradation studies were performed in order to correlate the effect of each homopolymer with the degradation behavior of the biodegradable blends. (C) 2016 Elsevier Ltd. All rights reserved.