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Issue 74, 2014
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The effect of added gold nanoparticles on the volume phase transition behavior for PVCL-based microgels

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Abstract

The volume phase transition (VPT) behavior of poly(N-vinylcaprolactam-co-4-vinylpyridine) P(VCL-co-4VP) microgels and their hybrid counterparts containing Au nanoparticles (AuNPs) is explored and compared by FTIR measurements in combination with the perturbation correlation moving window (PCMW) technique and two-dimensional correlation spectroscopy (2Dcos) analysis. It is demonstrated that the incorporation of AuNPs inside the microgels cause a slight dehydration effect on the microgels in the swollen state and an increase of the VPT temperature. Moreover, the interaction between C[double bond, length as m-dash]O and AuNPs can be confirmed by combining the conventional IR and 2Dcos analysis. It is with the help of the additional cross-links between AuNPs and the polymer chains (C[double bond, length as m-dash]O and pyridine groups) in the microgel network and the tendency of AuNPs to aggregate that the hybrid microgels exhibit a much greater dehydration during the VPT, as compared with the nonhybrid ones.

Graphical abstract: The effect of added gold nanoparticles on the volume phase transition behavior for PVCL-based microgels

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Supplementary files

Article information


Submitted
01 júl. 2014
Accepted
19 ágú. 2014
First published
19 ágú. 2014

RSC Adv., 2014,4, 39231-39241
Article type
Paper

The effect of added gold nanoparticles on the volume phase transition behavior for PVCL-based microgels

L. Hou and P. Wu, RSC Adv., 2014, 4, 39231
DOI: 10.1039/C4RA06471B

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