Measurement of gas solubility and diffusivity in polylactide

G. Li; H. Li; L. S. Turng; S. Gong; C. Zhang

doi:10.1016/j.fluid.2006.05.030

Measurement of gas solubility and diffusivity in polylactide

G. Li^*, H. Li, L. S. Turng, S. Gong, C. Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

135 Scopus citations

Abstract

The solubilities of carbon dioxide and nitrogen in a polylactide melt were determined at temperatures from 180 to 200 °C and pressures up to 28 MPa using a magnetic suspension balance (MSB). Both Sanchez-Lacombe (SL) and Simha-Somcynsky (SS) equations-of-state (EOS) were applied to predict the amount of volume swelling in the polylactide (PLA)/gas mixture due to gas dissolution. With the proper prediction of volume swelling from both SS-EOS and SL-EOS, the "corrected solubility" was determined based on the experimentally measured "apparent solubility" from the MSB. After measurement of the gas sorption curve in the PLA melt, the theoretical sorption model based on Fick's second law was adopted to extract the diffusion coefficients of carbon dioxide and nitrogen in polylactide at both 180 and 200 °C.

Original language	English
Pages (from-to)	158-166
Number of pages	9
Journal	Fluid Phase Equilibria
Volume	246
Issue number	1-2
DOIs	https://doi.org/10.1016/j.fluid.2006.05.030
State	Published - 25 08 2006
Externally published	Yes

Keywords

Carbon dioxide
Diffusion coefficient
Equation-of-state
Nitrogen
PLA
Solubility

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10.1016/j.fluid.2006.05.030

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@article{7d5ca812e8494875bae3cec580b2db82,

title = "Measurement of gas solubility and diffusivity in polylactide",

abstract = "The solubilities of carbon dioxide and nitrogen in a polylactide melt were determined at temperatures from 180 to 200 °C and pressures up to 28 MPa using a magnetic suspension balance (MSB). Both Sanchez-Lacombe (SL) and Simha-Somcynsky (SS) equations-of-state (EOS) were applied to predict the amount of volume swelling in the polylactide (PLA)/gas mixture due to gas dissolution. With the proper prediction of volume swelling from both SS-EOS and SL-EOS, the {"}corrected solubility{"} was determined based on the experimentally measured {"}apparent solubility{"} from the MSB. After measurement of the gas sorption curve in the PLA melt, the theoretical sorption model based on Fick's second law was adopted to extract the diffusion coefficients of carbon dioxide and nitrogen in polylactide at both 180 and 200 °C.",

keywords = "Carbon dioxide, Diffusion coefficient, Equation-of-state, Nitrogen, PLA, Solubility",

author = "G. Li and H. Li and Turng, \{L. S.\} and S. Gong and C. Zhang",

year = "2006",

month = aug,

day = "25",

doi = "10.1016/j.fluid.2006.05.030",

language = "英语",

volume = "246",

pages = "158--166",

journal = "Fluid Phase Equilibria",

issn = "0378-3812",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Measurement of gas solubility and diffusivity in polylactide

AU - Li, G.

AU - Li, H.

AU - Turng, L. S.

AU - Gong, S.

AU - Zhang, C.

PY - 2006/8/25

Y1 - 2006/8/25

N2 - The solubilities of carbon dioxide and nitrogen in a polylactide melt were determined at temperatures from 180 to 200 °C and pressures up to 28 MPa using a magnetic suspension balance (MSB). Both Sanchez-Lacombe (SL) and Simha-Somcynsky (SS) equations-of-state (EOS) were applied to predict the amount of volume swelling in the polylactide (PLA)/gas mixture due to gas dissolution. With the proper prediction of volume swelling from both SS-EOS and SL-EOS, the "corrected solubility" was determined based on the experimentally measured "apparent solubility" from the MSB. After measurement of the gas sorption curve in the PLA melt, the theoretical sorption model based on Fick's second law was adopted to extract the diffusion coefficients of carbon dioxide and nitrogen in polylactide at both 180 and 200 °C.

AB - The solubilities of carbon dioxide and nitrogen in a polylactide melt were determined at temperatures from 180 to 200 °C and pressures up to 28 MPa using a magnetic suspension balance (MSB). Both Sanchez-Lacombe (SL) and Simha-Somcynsky (SS) equations-of-state (EOS) were applied to predict the amount of volume swelling in the polylactide (PLA)/gas mixture due to gas dissolution. With the proper prediction of volume swelling from both SS-EOS and SL-EOS, the "corrected solubility" was determined based on the experimentally measured "apparent solubility" from the MSB. After measurement of the gas sorption curve in the PLA melt, the theoretical sorption model based on Fick's second law was adopted to extract the diffusion coefficients of carbon dioxide and nitrogen in polylactide at both 180 and 200 °C.

KW - Carbon dioxide

KW - Diffusion coefficient

KW - Equation-of-state

KW - Nitrogen

KW - PLA

KW - Solubility

UR - https://www.scopus.com/pages/publications/33746198732

U2 - 10.1016/j.fluid.2006.05.030

DO - 10.1016/j.fluid.2006.05.030

M3 - 文章

AN - SCOPUS:33746198732

SN - 0378-3812

VL - 246

SP - 158

EP - 166

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

IS - 1-2

ER -

Measurement of gas solubility and diffusivity in polylactide

Abstract

Keywords

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