Effect of Beeswax on Batch Foaming of PLA

Kun Chang Lin; Chia Hsun Chen; Shang Min Chen; Sian Nan Sie

doi:10.4028/www.scientific.net/AMR.779-780.327

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 779-780Effect of Beeswax on Batch Foaming of PLA

Effect of Beeswax on Batch Foaming of PLA

Abstract:

This paper presents the foaming behavior of PLA-CO₂ and PLA/beeswax-CO₂ systems for solid state foaming process with particular goal of producing low density foams. The low density PLA foams can be achieved under 2 MPa sub-critical CO₂ condition due to CO₂-induced crystalline. When 10wt% beeswax was added to PLA matrix, the tensile strain at break increases from 7.9% to 22.2% and crystallinity remain unchanged. The inherent brittle deformation behavior of the PLA was transformed into relatively ductile behavior after blending 10wt% beeswax. The expansion ratio of neat PLA and its blends with 10wt% beeswax increase from 1.08 to 19.4. The ductile deformation behavior of PLA is an important factor for solid-state PLA foam.

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Periodical:

Advanced Materials Research (Volumes 779-780)

Pages:

327-331

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.779-780.327

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Online since:

September 2013

Authors:

Kun Chang Lin, Chia Hsun Chen, Shang Min Chen, Sian Nan Sie

Keywords:

Beeswax, Foam, Poly(lactic acid) (PLA), Solid-State Foaming, Supercritical CO₂

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