Impact of crystallization on performance properties and biodegradability of poly(lactic acid)

Shawn Shi, Ramani Narayan, Shilpa Manjure

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Polylactic Acid (PLA) is the most widely available, renewable and compostable polymer with several unique features. However, PLA is poor in its ability to withstand elevated use temperatures above 55 °C. As such it is common practice to either compound PLA with additives [1-2] that improve its heat deflection temperature or increase its crystallinity [3] in mold or in an extra annealing step for use in injection molded applications. The objective of this research was to study the crystallization of three PLA grades and its effect on thermal properties including compostability. Crystallization was studied using DSC and Talc was used as a nucleating agent. Crystallinity was found to vary from 25% to 60% for the various grades. The PLA was converted into test bars and cutlery and its heat distortion temperature was tested before and after annealing. Additionally, the crystallized cutlery was sent to a local composting facility and was found to disintegrate within 4 weeks, which is much sooner than the requirements of the ASTM D6400 standard of 12 weeks.

LanguageEnglish (US)
Title of host publicationAnnual Technical Conference - ANTEC, Conference Proceedings
PublisherSociety of Plastics Engineers
Pages2604-2608
Number of pages5
Volume3
ISBN (Print)9781632665300
StatePublished - 2013
Event71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013 - Cincinnati, OH, United States
Duration: Apr 22 2013Apr 24 2013

Other

Other71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013
CountryUnited States
CityCincinnati, OH
Period4/22/134/24/13

Profile

Biodegradability
Lactic acid
Crystallization
Acids
Annealing
Talc
Composting
Temperature
Polymers
Thermodynamic properties
poly(lactic acid)
Hot Temperature

Keywords

  • Biodegradable
  • Compostable
  • Crystallization
  • Injection molding
  • PLA
  • Poly(lactic) acid

ASJC Scopus subject areas

  • Polymers and Plastics
  • Chemical Engineering(all)

Cite this

Shi, S., Narayan, R., & Manjure, S. (2013). Impact of crystallization on performance properties and biodegradability of poly(lactic acid). In Annual Technical Conference - ANTEC, Conference Proceedings (Vol. 3, pp. 2604-2608). Society of Plastics Engineers.

Impact of crystallization on performance properties and biodegradability of poly(lactic acid). / Shi, Shawn; Narayan, Ramani; Manjure, Shilpa.

Annual Technical Conference - ANTEC, Conference Proceedings. Vol. 3 Society of Plastics Engineers, 2013. p. 2604-2608.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shi, S, Narayan, R & Manjure, S 2013, Impact of crystallization on performance properties and biodegradability of poly(lactic acid). in Annual Technical Conference - ANTEC, Conference Proceedings. vol. 3, Society of Plastics Engineers, pp. 2604-2608, 71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013, Cincinnati, OH, United States, 4/22/13.
Shi S, Narayan R, Manjure S. Impact of crystallization on performance properties and biodegradability of poly(lactic acid). In Annual Technical Conference - ANTEC, Conference Proceedings. Vol. 3. Society of Plastics Engineers. 2013. p. 2604-2608.
Shi, Shawn ; Narayan, Ramani ; Manjure, Shilpa. / Impact of crystallization on performance properties and biodegradability of poly(lactic acid). Annual Technical Conference - ANTEC, Conference Proceedings. Vol. 3 Society of Plastics Engineers, 2013. pp. 2604-2608
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