Journal
AIP ADVANCES
Volume 2, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4769351
Keywords
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Funding
- National Natural Science Foundation of China [51120135002, 51121001]
- National Outstanding Youth Foundation of China [50925311]
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Biodegradable poly (lactic acid) (PLA) usually has a crystallinity less than 10% due to its poor crystallization ability. In this work, we found high pressure could significantly facilitate formation of crystallites of PLA, resulting in a crystallinity high up to 66.3% at pressure and temperature of 300 MPa and 185 degrees C. High-pressure induced crystalline reorganization and lamellar thickening led to two melting temperatures in the highly crystallized PLA but without cold crystallization compared to the normal-pressure crystallized PLA. Temperature dependence of high-pressure crystallization of PLA suggested desirable crystallization temperatures for highly crystallized PLA products. Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4769351]
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