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      C-NMR Spectroscopy에 의한 Olefin-Vinylchloride 공중합체의 tacticity에 관한 연구 = Studies on Tacticity of Olefin-Vinylchloride Copolymers with ??C-NMR Spectroscopy

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      https://www.riss.kr/link?id=A1992912

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      Homo PVC and olefin-vinylchloride copolymers have been prepared by free-radical copolymerization at 60℃.
      Molecular weights of PVC and copolymers have been caracterized by gel permeation chromatography (GPC) and C-NMR. We are used to calculate the tacticity shifts in the C-NMR spectra of PVC and copolymers by Bovey first order Markov statistics.
      Copolymers of vinyl chloride with isobutylene, propylene from 1.58 to 8.0mol% olefin, is found to random arrangment by ??C-NMR spectroscopy.
      The values of molecular weights of the copolymer ranged from 2.38 to 7.03×10⁴, measured by GPC. It was found that both the degree of conversion and molecular weight decreased in accordance with the increase of comonomer ratio in the copolymer.
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      Homo PVC and olefin-vinylchloride copolymers have been prepared by free-radical copolymerization at 60℃. Molecular weights of PVC and copolymers have been caracterized by gel permeation chromatography (GPC) and C-NMR. We are used to calculate the ...

      Homo PVC and olefin-vinylchloride copolymers have been prepared by free-radical copolymerization at 60℃.
      Molecular weights of PVC and copolymers have been caracterized by gel permeation chromatography (GPC) and C-NMR. We are used to calculate the tacticity shifts in the C-NMR spectra of PVC and copolymers by Bovey first order Markov statistics.
      Copolymers of vinyl chloride with isobutylene, propylene from 1.58 to 8.0mol% olefin, is found to random arrangment by ??C-NMR spectroscopy.
      The values of molecular weights of the copolymer ranged from 2.38 to 7.03×10⁴, measured by GPC. It was found that both the degree of conversion and molecular weight decreased in accordance with the increase of comonomer ratio in the copolymer.

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