Skip navigation

Impact of end-tethered polyhedral nanoparticles on the mobility of poly(dimethylsiloxane)

Impact of end-tethered polyhedral nanoparticles on the mobility of poly(dimethylsiloxane)

Cosgrove, Terence, Swier, Steven, Schmidt, Randall G., Muangpil, Sairoong, Espidel, Youssef, Griffiths, Peter ORCID: 0000-0002-6686-1271 and Prescott, Stuart W. (2015) Impact of end-tethered polyhedral nanoparticles on the mobility of poly(dimethylsiloxane). Langmuir, 31 (30). pp. 8469-8477. ISSN 0743-7463 (Print), 1520-5827 (Online) (doi:10.1021/acs.langmuir.5b01211)

[img]
Preview
PDF (Author Accepted Manuscript)
14255_Griffiths_Impact_of_end_tethered_polyhedral_(AAM)_2015.pdf - Accepted Version

Download (430kB)

Abstract

A series of the dumbbell shape nanocomposite materials of polydimethylsiloxanes (PDMS) and polyhedral oligomeric silsesquioxanes (POSS) was synthesised through hydrosilylation reaction of allyl-POSS and hydride-terminated PDMS. The chemical structures of the dumbbell shaped materials, so called POSS-PDMS-POSS triblocks, were characterised by 1H NMR and FT-IR spectroscopy. The impact of POSS on the molecular mobility of the PDMS middle chain was observed by using 1H spin-spin (T2) relaxation NMR. In contrast to the linear melts the triblocks showed an increase in mobility with increasing molecular weight over the range studied due to the constraints imposed by the tethered nanoparticles. Incorporation of the triblocks in homopolymer melts was compared to conventional nanocomposites.

Item Type: Article
Additional Information: © 2015 The American Physical Society
Uncontrolled Keywords: polydimethylsiloxane; polyhedral oligomeric silsesquioxanes; nanocomposites; hydrosilylation reaction, copolymers
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Last Modified: 11 Apr 2017 08:47
Selected for GREAT 2016: GREAT a
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/14255

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics