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Physical and mechanical properties of PLA, and their functions in widespread applications — A comprehensive review

Author(s)
Farah, Shady; Anderson, Daniel Griffith; Langer, Robert S
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Abstract
Poly(lactic acid) (PLA), so far, is the most extensively researched and utilized biodegradable aliphatic polyester in human history. Due to its merits, PLA is a leading biomaterial for numerous applications in medicine as well as in industry replacing conventional petrochemical-based polymers. The main purpose of this review is to elaborate the mechanical and physical properties that affect its stability, processability, degradation, PLA-other polymers immiscibility, aging and recyclability, and therefore its potential suitability to fulfill specific application requirements. This review also summarizes variations in these properties during PLA processing (i.e. thermal degradation and recyclability), biodegradation, packaging and sterilization, and aging (i.e. weathering and hygrothermal). In addition, we discuss up-to-date strategies for PLA properties improvements including components and plasticizer blending, nucleation agent addition, and PLA modifications and nanoformulations. Incorporating better understanding of the role of these properties with available improvement strategies is the key for successful utilization of PLA and its copolymers/composites/blends to maximize their fit with worldwide application needs. Keywords: Physical and mechanical properties; PLA; Biodegradable polymers; Polymer processing; Applications
Date issued
2016-06
URI
http://hdl.handle.net/1721.1/112940
Department
Massachusetts Institute of Technology. Institute for Medical Engineering & Science; Harvard University--MIT Division of Health Sciences and Technology; Massachusetts Institute of Technology. Department of Chemical Engineering; Koch Institute for Integrative Cancer Research at MIT
Journal
Advanced Drug Delivery Reviews
Publisher
Elsevier BV
Citation
Farah, Shady, et al. “Physical and Mechanical Properties of PLA, and Their Functions in Widespread Applications — A Comprehensive Review.” Advanced Drug Delivery Reviews, vol. 107, Dec. 2016, pp. 367–92.
Version: Author's final manuscript
ISSN
0169-409X

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