Synthesis and gas permeation properties of poly(vinyl chloride)-graft-poly(vinyl pyrrolidone) membranes

Seung Hyeon Yeon, Sung Hoon Ahn, Jong Hak Kim, Ki Bong Lee, Yujin Jeong, Seong Uk Hong

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A series of amphiphilic graft copolymers consisting of poly(vinyl chloride) (PVC) main chains and poly(vinyl pyrrolidone) (PVP) side chains, i.e. PVC-g-PVP, was synthesized via atom transfer radical polymerization (ATRP), as confirmed by 1H NMR, FT-IR spectroscopy, and gel permeation chromatography (GPC). Transmission electron microscope (TEM) and small angle X-ray scattering (SAXS) analysis revealed the microphase-separated structure of PVC-g-PVP and the domain spacing increased from 21.4 to 23.9nm with increasing grafting degree. All the membranes exhibited completely amorphous structure and high Young's modulus and tensile strength, as revealed by wide angle X-ray scattering (WAXS) and universal testing machine (UTM). Permeation experimental results using a CO 2/N 2 (50/50) mixture indicated that as an amount of PVP in a copolymer increased, CO 2 permeability increased without the sacrifice of selectivity. For example, the CO 2 permeability of PVC-g-PVP with 36wt% of PVP at 35°C was about four times higher than that of the pristine PVC membrane. This improvement resulted from the increase of diffusivity due to the disruption of chain packing in PVC by the grafting of PVP, as confirmed by WAXS analysis.

Original languageEnglish
Pages (from-to)516-521
Number of pages6
JournalPolymers for Advanced Technologies
Volume23
Issue number3
DOIs
Publication statusPublished - 2012 Mar 1

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Vinyl Chloride
Pyrrolidinones
Polyvinyl Chloride
Grafts
Permeation
Polyvinyl chlorides
Gases
Membranes
Carbon Monoxide
X ray scattering
Atom transfer radical polymerization
Graft copolymers
Gel permeation chromatography
Nuclear magnetic resonance spectroscopy
Infrared spectroscopy
Tensile strength
Electron microscopes
Copolymers
Elastic moduli
Testing

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics

Cite this

Yeon, Seung Hyeon ; Ahn, Sung Hoon ; Kim, Jong Hak ; Lee, Ki Bong ; Jeong, Yujin ; Hong, Seong Uk. / Synthesis and gas permeation properties of poly(vinyl chloride)-graft-poly(vinyl pyrrolidone) membranes. In: Polymers for Advanced Technologies. 2012 ; Vol. 23, No. 3. pp. 516-521.
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Synthesis and gas permeation properties of poly(vinyl chloride)-graft-poly(vinyl pyrrolidone) membranes. / Yeon, Seung Hyeon; Ahn, Sung Hoon; Kim, Jong Hak; Lee, Ki Bong; Jeong, Yujin; Hong, Seong Uk.

In: Polymers for Advanced Technologies, Vol. 23, No. 3, 01.03.2012, p. 516-521.

Research output: Contribution to journalArticle

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