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Journal of Materials Science

Erschienen in:

01.04.2015 | Original Paper

Synthesis and characterization of polystyrene-block-poly(vinylbenzoic acid): a promising compound for manipulating photoresponsive properties at the nanoscale

verfasst von: Ana S. Abreu, M. Oliveira, P. V. Rodrigues, I. Moura, G. Botelho, A. V. Machado

Erschienen in: Journal of Materials Science | Ausgabe 7/2015

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Abstract

Using reversible addition-fragmentation chain transfer (RAFT) polymerization, the effect of PSt macroRAFT and 4VBA ratio on the synthesis of a carboxylic acid functional block copolymer (PSt-b-P4VBA) was studied. PSt macroRAFT polymer was initially prepared followed by the insertion of 4-vinylbenzoic acid (4VBA) monomer. The chemical structure of the diblock copolymer was confirmed by NMR and FTIR. The effect of PSt macroRAFT and 4VBA ratio on copolymerization yield and on molecular weight distribution was assessed by gel permeation chromatography. The rate of polymerization did not change as the 4VBA/PSt macroRAFT ratio increased, indicating an ideal amount of 4VBA insertion. An optimal ratio of [PSt macroRAFT]:[AIBN]:[4VBA] was 1.2:1:180. DSC and XRD confirmed the amorphous structure of homo and copolymer. Thermal stability was higher for PSt-b-P4VBA forming activated porous carbon char by dehydration, carbonization and oxidation. SEM and STEM observations showed a morphological evolution between PSt macroRAFT and the correspondent copolymer.

Vorheriger Artikel Contact damage of hard and brittle thin films on ductile metallic substrates: an analysis of diamond-like carbon on titanium substrates

Nächster Artikel Graphene and carbon nanotubes for the synergistic reinforcement of polyamide 6 fibers

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Titel: Synthesis and characterization of polystyrene-block-poly(vinylbenzoic acid): a promising compound for manipulating photoresponsive properties at the nanoscale
verfasst von: Ana S. Abreu
M. Oliveira
P. V. Rodrigues
I. Moura
G. Botelho
A. V. Machado
Publikationsdatum: 01.04.2015
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 7/2015
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-015-8835-1

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