Application of supercritical carbon dioxide in the preparation of biodegradable polylactide membranes | Zendy

Xu Qun | Zendy; Pang Maizhi | Zendy; Peng Qi | Zendy; Li Jianbo | Zendy; Jiang Yu | Zendy

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Application of supercritical carbon dioxide in the preparation of biodegradable polylactide membranes

Author(s) -

Xu Qun,

Pang Maizhi,

Peng Qi,

Li Jianbo,

Jiang Yu

Publication year - 2004

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.21132

Subject(s) - supercritical carbon dioxide , membrane , supercritical fluid , solvent , materials science , chemical engineering , scanning electron microscope , polymer , polymer chemistry , chemistry , organic chemistry , composite material , biochemistry , engineering

The application of supercritical carbon dioxide (SCCO 2 ) has been attracting more and more attention, especially in the formation of polymer membranes. The membrane formation using SCCO 2 is analogous to conventional immersion precipitation process by using organic nonsolvent. Polylactide (PLA) membranes were prepared by phase separation with SCCO 2 as nonsolvent. Two kinds of solvents were used to study the effect of the solvent on the cross‐section structure of the PLA membrane and the compatibility between the solvent and SCCO 2 was studied. The effect of the solvent and the preconditioning on the morphology of the PLA membrane was also investigated through scanning electron microscope, wide‐angle X‐ray diffraction, and polarizing microscopy. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 2158–2163, 2004

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