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Polymer Bulletin
Erschienen in: Polymer Bulletin 11/2013

01.11.2013 | Original Paper

Synthesis and self-assembly properties of well-defined four-arm star poly(ε-caprolactone)-b-poly(N-vinylpyrrolidone) amphiphilic block copolymers

verfasst von: Avnish Kumar Mishra, K. Ramesh, Tapas Kumar Paira, Divesh N. Srivastava, Tarun Kumar Mandal, Nira Misra, Biswajit Ray

Erschienen in: Polymer Bulletin | Ausgabe 11/2013

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Abstract

Well-defined amphiphilic four-arm star diblock copolymers of poly(ε-caprolactone) (PCL) and poly(N-vinylpyrrolidone) (PNVP) have successfully been synthesized by combining the ring-opening polymerization (ROP) of ε-caprolactone (CL) and xanthate-mediated reversible addition-fragmentation chain transfer (RAFT) polymerization of N-vinylpyrrolidone (NVP). The resulting block copolymer shows the formation of spherical micelles in water as revealed by transmission electron microscopy (TEM) and supported by light-scattering study. The critical micellar concentration (cmc) value of the micelle increases with the increase in the PNVP block length. Hydrodynamic diameter distribution of the micelles decreases with the increase in the PNVP block length. The effective hydrodynamic ratio (R h) remains almost constant over the angles of scattering measurements above the corresponding cmc value. The usefulness of the synthesized star amphiphilic block copolymers was checked by the successful synthesis of silver nanoparticles.

Graphical abstract

Well-defined four-arm star poly(ε-caprolactone)-b-poly(N-vinylpyrrolidone) amphiphilic block copolymers are prepared by the combination of ring opening polymerization and xanthate-mediated reversible addition-fragmentation chain transfer polymerization and their self-assembly properties are studied using 1H NMR, fluorescence spectroscopy, dynamic light scattering, and TEM.
Vorheriger Artikel Functional copolymer/organo-MMT nanoarchitectures: self-assembled core-shell morphology of poly(maleic anhydride-alt-α-olefin)/organo-MMT nanocomposites
Nächster Artikel Thermal properties and characterization of surface-treated RSF-reinforced polylactide composites

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Metadaten
Titel
Synthesis and self-assembly properties of well-defined four-arm star poly(ε-caprolactone)-b-poly(N-vinylpyrrolidone) amphiphilic block copolymers
verfasst von
Avnish Kumar Mishra
K. Ramesh
Tapas Kumar Paira
Divesh N. Srivastava
Tarun Kumar Mandal
Nira Misra
Biswajit Ray
Publikationsdatum
01.11.2013
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 11/2013
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-013-1017-x

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