Effects of annealing time and temperature on the crystallinity and dynamic mechanical behavior of injection molded polylactic acid (PLA)

Yottha Srithep*, Paul Nealey, Lih Sheng Turng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The effects of annealing time and temperature on the crystallinity of poly(lactic acid) (PLA) were investigated. The degree of crystallinity observed after short annealing times resembled those observed at cooler temperatures, suggesting a time-temperature superposition relationship. Crystallinity isotherms in the logarithmic scale were shifted horizontally along the log-time axis and a master curve was constructed. Dynamic mechanical analysis showed that an increase in crystallinity increased the glass transition temperature and improved the storage modulus.

Original languageEnglish
Title of host publication70th Annual Technical Conference of the Society of Plastics Engineers 2012, ANTEC 2012
Pages777-782
Number of pages6
StatePublished - 2012
Externally publishedYes
Event70th Annual Technical Conference of the Society of Plastics Engineers 2012, ANTEC 2012 - Orlando, FL, United States
Duration: 02 04 201204 04 2012

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume1

Conference

Conference70th Annual Technical Conference of the Society of Plastics Engineers 2012, ANTEC 2012
Country/TerritoryUnited States
CityOrlando, FL
Period02/04/1204/04/12

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