Mechanical properties and thermal characteristics of poly(lactic acid) and paraffin wax blends prepared by conventional melt compounding and sub-supercritical gasassisted processing (SGAP)

Yann Jiun Chen, An Huang, Lih Sheng Turng

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

Abstract

In this study, poly(lactic acid) (PLA)/paraffin wax (PW) blends containing different amounts of PW were investigated. The blends were prepared by a twin-screw extruder in two ways: conventional melt compounding extrusion and sub-supercritical gas-assisted processing (SGAP). Then, these blends and the neat PLA were injection molded into ASTM 638 Type V tensile bars for evaluation. To observe the effects of the different melt compounding processes and the amounts of PW on the blends, the thermal stability and mechanical properties of the tensile bars were characterized. The results showed that the addition of paraffin wax changed the fractural mechanism and yielded tremendous improvements in elongation compared to neat PLA. In addition, samples made by the sub-supercritical gas-assisted processing (SGAP) extrusion exhibited better and more consistent results.

Original languageEnglish
Title of host publication75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017
PublisherSociety of Plastics Engineers
Pages1526-1532
Number of pages7
ISBN (Electronic)9780878493609
ISBN (Print)978-0-692-88309-9
StatePublished - 2017
Externally publishedYes
Event75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017 - Anaheim, United States
Duration: 08 05 201710 05 2017

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume2017-May

Conference

Conference75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017
Country/TerritoryUnited States
CityAnaheim
Period08/05/1710/05/17

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