Linear Viscoelasticity of Spherical SiO 2 Nanoparticle-Tethered Poly(butyl acrylate) Hybrids

Handle URI:
http://hdl.handle.net/10754/598721
Title:
Linear Viscoelasticity of Spherical SiO 2 Nanoparticle-Tethered Poly(butyl acrylate) Hybrids
Authors:
Goel, Vivek; Pietrasik, Joanna; Matyjaszewski, Krzysztof; Krishnamoorti, Ramanan
Abstract:
The melt state linear viscoelastic properties of spherical silica nanoparticles with grafted poly(n-butyl acrylate) chains of varying molecular weight were probed using linear small amplitude dynamic oscillatory measurements and complementary linear stress relaxation measurements. While the pure silica-tethered-polymer hybrids with no added homopolymer exhibit solid-like response, addition of matched molecular weight free matrix homopolymer chains to this hybrid, at low concentrations of added homopolymer, maintains the solid-like response with a lowered modulus that can be factored into a silica concentration dependence and a molecular weight dependence. While the silica concentration dependence of the modulus is strong, the dependence on molecular weight is weak. On the other hand, increasing the amount of added homopolymer changes the viscoelastic response to that of a liquid with a relaxation time that scales exponentially with hybrid concentration. © 2010 American Chemical Society.
Citation:
Goel V, Pietrasik J, Matyjaszewski K, Krishnamoorti R (2010) Linear Viscoelasticity of Spherical SiO 2 Nanoparticle-Tethered Poly(butyl acrylate) Hybrids . Ind Eng Chem Res 49: 11985–11990. Available: http://dx.doi.org/10.1021/ie1007129.
Publisher:
American Chemical Society (ACS)
Journal:
Industrial & Engineering Chemistry Research
KAUST Grant Number:
KUS-C1-018-02
Issue Date:
Dec-2010
DOI:
10.1021/ie1007129
Type:
Article
ISSN:
0888-5885; 1520-5045
Sponsors:
V.G. and R.K. gratefully acknowledge the partial support of the National Science Foundation (CMMI-0708096). This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). J.P. and K.M. thank the Kosciuszko Foundation, Ministry of Science and Higher Education (Grant No. N508 3820 33) and the National Science Foundation (DMR-09-69301) for financial support.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorGoel, Viveken
dc.contributor.authorPietrasik, Joannaen
dc.contributor.authorMatyjaszewski, Krzysztofen
dc.contributor.authorKrishnamoorti, Ramananen
dc.date.accessioned2016-02-25T13:35:05Zen
dc.date.available2016-02-25T13:35:05Zen
dc.date.issued2010-12en
dc.identifier.citationGoel V, Pietrasik J, Matyjaszewski K, Krishnamoorti R (2010) Linear Viscoelasticity of Spherical SiO 2 Nanoparticle-Tethered Poly(butyl acrylate) Hybrids . Ind Eng Chem Res 49: 11985–11990. Available: http://dx.doi.org/10.1021/ie1007129.en
dc.identifier.issn0888-5885en
dc.identifier.issn1520-5045en
dc.identifier.doi10.1021/ie1007129en
dc.identifier.urihttp://hdl.handle.net/10754/598721en
dc.description.abstractThe melt state linear viscoelastic properties of spherical silica nanoparticles with grafted poly(n-butyl acrylate) chains of varying molecular weight were probed using linear small amplitude dynamic oscillatory measurements and complementary linear stress relaxation measurements. While the pure silica-tethered-polymer hybrids with no added homopolymer exhibit solid-like response, addition of matched molecular weight free matrix homopolymer chains to this hybrid, at low concentrations of added homopolymer, maintains the solid-like response with a lowered modulus that can be factored into a silica concentration dependence and a molecular weight dependence. While the silica concentration dependence of the modulus is strong, the dependence on molecular weight is weak. On the other hand, increasing the amount of added homopolymer changes the viscoelastic response to that of a liquid with a relaxation time that scales exponentially with hybrid concentration. © 2010 American Chemical Society.en
dc.description.sponsorshipV.G. and R.K. gratefully acknowledge the partial support of the National Science Foundation (CMMI-0708096). This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). J.P. and K.M. thank the Kosciuszko Foundation, Ministry of Science and Higher Education (Grant No. N508 3820 33) and the National Science Foundation (DMR-09-69301) for financial support.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleLinear Viscoelasticity of Spherical SiO 2 Nanoparticle-Tethered Poly(butyl acrylate) Hybridsen
dc.typeArticleen
dc.identifier.journalIndustrial & Engineering Chemistry Researchen
dc.contributor.institutionUniversity of Houston, Houston, United Statesen
dc.contributor.institutionLodz University of Technology, Lodz, Polanden
dc.contributor.institutionCarnegie Mellon University, Pittsburgh, United Statesen
kaust.grant.numberKUS-C1-018-02en
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