Synthesis of poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) graft copolymers and their use in pressure retarded osmosis (PRO) membranes

Rajkumar Patel, Won Seok Chi, Sung Hoon Ahn, Chul Ho Park, Hyung Keun Lee, Jong Hak Kim

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Poly(vinyl chloride) (PVC) was grafted with 3-sulfopropyl methacrylate potassium salt via atom transfer radical polymerization (ATRP) to produce a poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) (PVC-g-PSPMA) amphiphilic graft copolymer, as characterized via Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H NMR). Two separated domains and two glass transition temperatures (Tgs) were observed via transmission electron microscopy (TEM) and differential scanning calorimetry (DSC), respectively, indicating a microphase-separated structure in the PVC-g-PSPMA. Small-angle X-ray scattering (SAXS) analysis revealed scattering peaks at q=0.54nm-1, by which the interdomain distance was determined to be 11.6nm, roughly consistent with the TEM results. The PVC-g-PSPMA graft copolymer was blended with pristine PVC and solution-casted to prepare organized PVC/PVC-g-PSPMA blend membranes, as characterized via scanning electron microscopy (SEM), contact angle measurement and X-ray photoelectron spectroscopy (XPS). The water flux of the PVC/PVC-g-PSPMA blend membrane was approximately 2.20L/m2h (LMH) at 14.7bar, which was much higher than that of the pristine PVC membrane. This is due to the water channels that formed due to the presence of hydrophilic ionic groups, which allow for the passage of water while resisting the passage of salt.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalChemical Engineering Journal
Volume247
DOIs
Publication statusPublished - 2014 Jul 1

Fingerprint

Vinyl Chloride
Osmosis membranes
Graft copolymers
osmosis
Polyvinyl chlorides
Polyvinyl Chloride
chloride
membrane
Nuclear magnetic resonance
Membranes
nuclear magnetic resonance
transmission electron microscopy
Salts
Transmission electron microscopy
Water
scattering
Atom transfer radical polymerization
salt
Angle measurement
Aquaporins

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Synthesis of poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) graft copolymers and their use in pressure retarded osmosis (PRO) membranes",
abstract = "Poly(vinyl chloride) (PVC) was grafted with 3-sulfopropyl methacrylate potassium salt via atom transfer radical polymerization (ATRP) to produce a poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) (PVC-g-PSPMA) amphiphilic graft copolymer, as characterized via Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H NMR). Two separated domains and two glass transition temperatures (Tgs) were observed via transmission electron microscopy (TEM) and differential scanning calorimetry (DSC), respectively, indicating a microphase-separated structure in the PVC-g-PSPMA. Small-angle X-ray scattering (SAXS) analysis revealed scattering peaks at q=0.54nm-1, by which the interdomain distance was determined to be 11.6nm, roughly consistent with the TEM results. The PVC-g-PSPMA graft copolymer was blended with pristine PVC and solution-casted to prepare organized PVC/PVC-g-PSPMA blend membranes, as characterized via scanning electron microscopy (SEM), contact angle measurement and X-ray photoelectron spectroscopy (XPS). The water flux of the PVC/PVC-g-PSPMA blend membrane was approximately 2.20L/m2h (LMH) at 14.7bar, which was much higher than that of the pristine PVC membrane. This is due to the water channels that formed due to the presence of hydrophilic ionic groups, which allow for the passage of water while resisting the passage of salt.",
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Synthesis of poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) graft copolymers and their use in pressure retarded osmosis (PRO) membranes. / Patel, Rajkumar; Chi, Won Seok; Ahn, Sung Hoon; Park, Chul Ho; Lee, Hyung Keun; Kim, Jong Hak.

In: Chemical Engineering Journal, Vol. 247, 01.07.2014, p. 1-8.

Research output: Contribution to journalArticle

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T1 - Synthesis of poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) graft copolymers and their use in pressure retarded osmosis (PRO) membranes

AU - Patel, Rajkumar

AU - Chi, Won Seok

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AU - Park, Chul Ho

AU - Lee, Hyung Keun

AU - Kim, Jong Hak

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AB - Poly(vinyl chloride) (PVC) was grafted with 3-sulfopropyl methacrylate potassium salt via atom transfer radical polymerization (ATRP) to produce a poly(vinyl chloride)-g-poly(3-sulfopropyl methacrylate) (PVC-g-PSPMA) amphiphilic graft copolymer, as characterized via Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H NMR). Two separated domains and two glass transition temperatures (Tgs) were observed via transmission electron microscopy (TEM) and differential scanning calorimetry (DSC), respectively, indicating a microphase-separated structure in the PVC-g-PSPMA. Small-angle X-ray scattering (SAXS) analysis revealed scattering peaks at q=0.54nm-1, by which the interdomain distance was determined to be 11.6nm, roughly consistent with the TEM results. The PVC-g-PSPMA graft copolymer was blended with pristine PVC and solution-casted to prepare organized PVC/PVC-g-PSPMA blend membranes, as characterized via scanning electron microscopy (SEM), contact angle measurement and X-ray photoelectron spectroscopy (XPS). The water flux of the PVC/PVC-g-PSPMA blend membrane was approximately 2.20L/m2h (LMH) at 14.7bar, which was much higher than that of the pristine PVC membrane. This is due to the water channels that formed due to the presence of hydrophilic ionic groups, which allow for the passage of water while resisting the passage of salt.

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