Jung, KT Hwang, DK Shul, YG Han, HS Lee, WS 2024-01-21T11:05:25Z 2024-01-21T11:05:25Z 2021-09-05 2002-03 0167-577X https://pubs.kist.re.kr/handle/201004/139753 Isotactic polyacrylonitrile (PAN) has been prepared by using a zeolite as a host. After introduction of acrylonitrile monomers, they were subsequently polymerized with radical initiators in Na-Y and Na-beta zeolite channels, followed by extraction with hydrofluoric acid. C-13-NMR results show that the isotacticity of extracted PAN is higher than that of bulk PAN prepared under the same reaction conditions and is also affected by the pore structure of host. Thermal and physical properties of extracted PAN were also investigated using GPC, DSC and XRD. (C) 2002 Elsevier Science B.V. All rights reserved. English ELSEVIER SCIENCE BV MOLECULAR-WEIGHT NMR-SPECTROSCOPY POLYMERIZATION STEREOREGULARITY TACTICITY RESONANCE The preparation of isotactic polyacrylonitrile using zeolitep Article 10.1016/S0167-577X(01)00473-6 1 MATERIALS LETTERS, v.53, no.3, pp.180 - 185 MATERIALS LETTERS 53 3 180 185 scie scopus 000174312400010 2-s2.0-0036498441 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article MOLECULAR-WEIGHT NMR-SPECTROSCOPY POLYMERIZATION STEREOREGULARITY TACTICITY RESONANCE isotactic stereoregularity PAN (polyacrylonitrile) zeolite radical polymerization