Preparation and Properties of Biodegradable Shape Memory Polylactic Acid/Poly(ε‐caprolactone) Blends under Volume Elongational Deformation

Zhitao Yang; Zhao Yang; Jiajing Zeng; Juxin Yang; Xianwu Cao

doi:10.1002/mame.202200342

Macromolecular Materials and Engineering (Jan 2023)

Preparation and Properties of Biodegradable Shape Memory Polylactic Acid/Poly(ε‐caprolactone) Blends under Volume Elongational Deformation

Zhitao Yang,
Zhao Yang,
Jiajing Zeng,
Juxin Yang,
Xianwu Cao

Affiliations

Zhitao Yang: National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering South China University of Technology GuangZhou 510640 China
Zhao Yang: National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering South China University of Technology GuangZhou 510640 China
Jiajing Zeng: National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering South China University of Technology GuangZhou 510640 China
Juxin Yang: National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering South China University of Technology GuangZhou 510640 China
Xianwu Cao: National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering South China University of Technology GuangZhou 510640 China

DOI: https://doi.org/10.1002/mame.202200342
Journal volume & issue: Vol. 308, no. 1
pp. n/a – n/a

Abstract

Read online

Abstract In this work, a novel eccentric rotor mixer (ERM), which can generate circulating volume elongational deformation, is employed to prepare biodegradable polylactic acid (PLA)/poly(ε‐caprolactone) (PCL) thermo‐responsive shape‐memory blends without a compatibilizer. The results of scanning electron microscopy (SEM) show that the ERM has more efficient dispersion and compatibilization for blends than conventional Banbury mixers, which is beneficial for shape‐memory performance. The results of Fourier transform infrared (FTIR) and differential scanning calorimetry (DSC) also confirm the consequences. Then, morphological and mechanical properties and shape memory behaviors of the blends are investigated in detail. Co‐continuous morphology is found on EF‐PLA50. The blends exhibit remarkable shape‐memory performance. The bending shape fixing ratio and recovery ratio of the blends are more than 94% and are still more than 90% after five shape memory cycles. With the increase of PLA content, the shape fixing ratio of blends decreases, while the shape recovery ratio increases and the shape recovery time becomes shorter. All the blends show good mechanical properties.

Published in Macromolecular Materials and Engineering

ISSN: 1438-7492 (Print); 1439-2054 (Online)
Publisher: Wiley-VCH
Country of publisher: Germany
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Technology: Engineering (General). Civil engineering (General)
Website: https://onlinelibrary.wiley.com/journal/14392054

About the journal

Abstract

Keywords