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Journal of Polymer Science Part A: Polymer ChemistryVolume 53, Issue 9 p. 1125-1133 Article Polyisobutylene containing organic/inorganic hybrid block copolymers and their crystalline behavior Ujjal Haldar, Ujjal Haldar Department of Chemical Sciences, Polymer Research Centre, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, IndiaSearch for more papers by this authorKamal Bauri, Kamal Bauri Department of Chemical Sciences, Polymer Research Centre, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, IndiaSearch for more papers by this authorRen Li, Ren Li Department of Chemistry, Polymer Science Program, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts, 01854Search for more papers by this authorRudolf Faust, Rudolf Faust Department of Chemistry, Polymer Science Program, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts, 01854Search for more papers by this authorPriyadarsi De, Corresponding Author Priyadarsi De Department of Chemical Sciences, Polymer Research Centre, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, IndiaCorrespondence to: P. De (E-mail: [email protected])Search for more papers by this author Ujjal Haldar, Ujjal Haldar Department of Chemical Sciences, Polymer Research Centre, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, IndiaSearch for more papers by this authorKamal Bauri, Kamal Bauri Department of Chemical Sciences, Polymer Research Centre, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, IndiaSearch for more papers by this authorRen Li, Ren Li Department of Chemistry, Polymer Science Program, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts, 01854Search for more papers by this authorRudolf Faust, Rudolf Faust Department of Chemistry, Polymer Science Program, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts, 01854Search for more papers by this authorPriyadarsi De, Corresponding Author Priyadarsi De Department of Chemical Sciences, Polymer Research Centre, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, West Bengal, IndiaCorrespondence to: P. De (E-mail: [email protected])Search for more papers by this author First published: 07 February 2015 https://doi.org/10.1002/pola.27543Citations: 9Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL ABSTRACT Block copolymer comprising of polyisobutylene (PIB) soft segment and poly(3-(3,5,7,9,11,13,15-heptaisobutyl-pentacyclo[9.5.1.13,9.15,15.17,13]-octasiloxane-1-yl)propyl methacrylate) (PMAPOSS) hard segment was synthesized by combination of living carbocationic and reversible addition-fragmentation chain transfer (RAFT) polymerizations. Block copolymers were characterized by 1H and 29Si NMR spectroscopy, FT-IR study, energy dispersive X-ray spectroscopy (EDX), and gel permeation chromatography (GPC). The EDX, combined with scanning electron microscopy (SEM) was employed for determination of elemental composition. Thermal transition and degradation behaviors were confirmed by differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA), respectively. Although both the PIB and MAPOSS homopolymers are amorphous in nature, in their block copolymers the PMAPOSS domain showed crystalline behavior, as confirmed from wide-angle X-ray scattering (WAXS) technique, DSC studies and polarized optical microscopy (POM). Interestingly, crystalline melting temperatures (Tm) can be tuned by changing the PIB to PMAPOSS block length ratios. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 1125–1133 REFERENCES AND NOTES 1E. P. Giannelis, R. Krishnamoorti, E. Manias, Adv. Polym. 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