BARRIER PROPERTIES OF VINYLIDENE CHLORIDE/METHYL ACRYLATE COPOLYMER*

LI Tuesheng; WENG Zhixue; PAN Zuren

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BARRIER PROPERTIES OF VINYLIDENE CHLORIDE/METHYL ACRYLATE COPOLYMER*

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- BARRIER PROPERTIES OF VINYLIDENE CHLORIDE/METHYL ACRYLATE COPOLYMER*
- Vol. 15, Issue 4, Pages: 319-324(1997)
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- Published：20 December 1997
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LI Tuesheng, WENG Zhixue, PAN Zuren. BARRIER PROPERTIES OF VINYLIDENE CHLORIDE/METHYL ACRYLATE COPOLYMER*[J]. 1997, 15(4): 319-324.
DOI：

LI Tuesheng, WENG Zhixue, PAN Zuren. BARRIER PROPERTIES OF VINYLIDENE CHLORIDE/METHYL ACRYLATE COPOLYMER*[J]. 1997, 15(4): 319-324. DOI：

摘要

A series of vinylidene dichloride (VDC) copolymers with methyl acrylate (MA) ascomonomer (3--12wt%)

was prepared by free-radical suspension copolymerization. Thepermeability coefficients of the copolymers to oxygen and carbon dioxide were measured at1.0 MPa and at 30℃

and those to water vapor were measured at 30℃ and 100% relativehumidity All the VDC/MA copolymers studied are semicrystalline. As the MA contentincreases

the permeability coefficients of the copolymers to oxygen

carbon dioxide

and water vapor are progressively increased

caused by decrease in crystalline fraction and increase in free volume of VDC/MA copolymers.

Abstract

A series of vinylidene dichloride (VDC) copolymers with methyl acrylate (MA) ascomonomer (3--12wt%)

was prepared by free-radical suspension copolymerization. Thepermeability coefficients of the copolymers to oxygen and carbon dioxide were measured at1.0 MPa and at 30℃

and those to water vapor were measured at 30℃ and 100% relativehumidity All the VDC/MA copolymers studied are semicrystalline. As the MA contentincreases

the permeability coefficients of the copolymers to oxygen

carbon dioxide

and water vapor are progressively increased

caused by decrease in crystalline fraction and increase in free volume of VDC/MA copolymers.

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