Issue 29, 2013
From the journal:

RSC Advances

Study on biocompatible PLLA–PEG blends with high toughness and strength via pressure-induced-flow processing

Xiaoling Feng,a   Sen Zhang,a   Shu Zhu,a   Keqing Han,a   Mingli Jiao,a   Jian Song,a   Yu Ma*a  and  Muhuo Yu*a  

* Corresponding authors

a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China
E-mail: yumuhuo@dhu.edu.cn, yma@dhu.edu.cn
Fax: +86 21 67792892
Tel: +86 21 67792887

Abstract

In this paper, we report a novel and facile method of pressure-induced-flow (PIF) processing that remarkably enhanced the mechanical properties of polylactic acid (PLLA)–PEG blends. The impact strength and bending strength increased by about 20 and 4 times, respectively. Meanwhile, the tensile strength and elongation at break were 3 and 7 times higher compared with raw samples. As indicated by DSC and polarizing microscopy, POM, oriented spherulites were present in the sample after PIF processing. The SEM results showed that the fracture surface of the PIF samples became oriented and much rougher. The cell culture results indicated that the PLLA–PEG blends after PIF processing still maintain as good biocompatibility as the original.

Graphical abstract: Study on biocompatible PLLA–PEG blends with high toughness and strength via pressure-induced-flow processing

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Article information

DOI
https://doi.org/10.1039/C3RA40899J
Article type
Paper
Submitted
21 Feb 2013
Accepted
26 Apr 2013
First published
29 Apr 2013

RSC Adv., 2013,3, 11738-11744

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Study on biocompatible PLLA–PEG blends with high toughness and strength via pressure-induced-flow processing

X. Feng, S. Zhang, S. Zhu, K. Han, M. Jiao, J. Song, Y. Ma and M. Yu, RSC Adv., 2013, 3, 11738 DOI: 10.1039/C3RA40899J

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