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Journal of Polymer Research
Erschienen in: Journal of Polymer Research 3/2012

01.03.2012 | Original Paper

The sorption behaviors in PLLA-CO2 system and its effect on foam morphology

verfasst von: Xia Liao, Arghavan V. Nawaby

Erschienen in: Journal of Polymer Research | Ausgabe 3/2012

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Abstract

The sorption behavior, physical properties, and foam morphologies in poly(L-lactic acid) (PLLA)-CO2 system were studied in this paper. The solubility and diffusion coefficient of CO2 in PLLA in the range of 0 °C to 45 °C and pressure up to 5.5 MPa were investigated. The diffusion coefficients were analyzed to determine the plasticization glass transition temperature (T g ) of the PLLA-CO2 systems. The data of T g s of PLLA at various CO2 pressures demonstrated that PLLA-CO2 system exhibited a retrograde vitrification behavior, which has never been reported on semi-crystalline polymer-gas system by systematic measurement of solubility data. The sorption curves of PLLA at certain temperatures and pressures exhibited a characteristic keen which indicated the rejection of CO2 from the polymer matrix due to CO2-induced crystallization. The fundamental understanding of PLLA-CO2 interactions was utilized to control the CO2 solubility and crystallinity in PLLA thus the physical properties, in order to develop various unique foam structures.
Vorheriger Artikel Diffusivity of alkanes in polystyrene
Nächster Artikel Multiscale modeling of syndiospecific styrene polymerization

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Metadaten
Titel
The sorption behaviors in PLLA-CO2 system and its effect on foam morphology
verfasst von
Xia Liao
Arghavan V. Nawaby
Publikationsdatum
01.03.2012
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 3/2012
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-012-9827-3

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