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Polymer Bulletin
Erschienen in: Polymer Bulletin 6/2015

01.06.2015 | Original Paper

Synthesis and self-assembly of new amphiphilic thermosensitive poly(N-vinylcaprolactam)/poly(d,l-lactide) block copolymers via the combination of ring-opening polymerization and click chemistry

verfasst von: Qiuhua Wu, Jie Yi, Siyu Wang, Daliang Liu, Ximing Song, Guolin Zhang

Erschienen in: Polymer Bulletin | Ausgabe 6/2015

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Abstract

New amphiphilic thermosensitive poly(N-vinylcaprolactam)/poly(d,l-lactide) (PNVCL-b-PLA) block copolymers were synthesized by combining ring-opening polymerization of d,l-lactide (LA), free radical polymerization of N-vinylcaprolactam, and subsequent click chemistry. Their structures were characterized by IR, 1H NMR, 13C NMR, and GPC measurements. The fluorescence technique showed that these copolymers could self-assemble into nano-micelles in water and the CMC values of the copolymer solutions reduced with the increasing of the proportion of hydrophobic segments. Dynamic light scattering demonstrated that the sizes of micelles reduced with the increasing of the proportion of hydrophobic segments. Transmission electron microscopy images demonstrated that all micelles were spherical. On the other hand, the UV–vis measurement showed that these block copolymers exhibited a reproducible temperature-responsive behavior with a lower critical solution temperature that was tunable by the block composition and the concentration of the copolymers.
Vorheriger Artikel UV resistance and fire retardant property enhancement of unsaturated polyester composite
Nächster Artikel Molecular modeling study of CO2 plasticization and sorption onto absorbable polyesters

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Metadaten
Titel
Synthesis and self-assembly of new amphiphilic thermosensitive poly(N-vinylcaprolactam)/poly(d,l-lactide) block copolymers via the combination of ring-opening polymerization and click chemistry
verfasst von
Qiuhua Wu
Jie Yi
Siyu Wang
Daliang Liu
Ximing Song
Guolin Zhang
Publikationsdatum
01.06.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 6/2015
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-015-1348-x

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