Dynamic relaxation characteristics of crosslinked poly(ethylene oxide) copolymer networks: Influence of short chain pendant groups

Matthew A. Borns; Sumod Kalakkunnath; Douglass S. Kalika; Victor A. Kusuma; Benny D. Freeman

doi:10.1016/j.polymer.2007.10.020

Dynamic relaxation characteristics of crosslinked poly(ethylene oxide) copolymer networks: Influence of short chain pendant groups

Matthew A. Borns, Sumod Kalakkunnath, Douglass S. Kalika, Victor A. Kusuma, Benny D. Freeman

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The dynamic relaxation characteristics of short-branch rubbery amorphous networks prepared by the photopolymerization of poly(ethylene glycol) diacrylate [PEGDA] crosslinker have been investigated using dynamic mechanical analysis and broadband dielectric spectroscopy. Copolymerization with low molecular weight acrylates was used to control effective crosslink density in the networks and led to the insertion of ethylene oxide pendant groups along the network backbone. Substantial differences in the sub-glass and glass-rubber relaxation properties of the copolymers were observed as a function of pendant length and the nature of the pendant terminal group (e.g., -OH vs. -OCH₃); the results are compared with prior studies on model copolymers containing longer, more flexible side branches.

Original language	English
Pages (from-to)	7316-7328
Number of pages	13
Journal	Polymer
Volume	48
Issue number	25
DOIs	https://doi.org/10.1016/j.polymer.2007.10.020
State	Published - Nov 30 2007

Bibliographical note

Funding Information:
This work was supported in part by a grant from the Kentucky Science and Engineering Foundation as per Grant Agreement KSEF-148-502-05-130 with the Kentucky Science and Technology Corporation. In addition, we are pleased to acknowledge funding from the National Science Foundation Research Experiences for Undergraduates Program administered through the University of Kentucky Center of Membrane Sciences (DMR-0453488). Activities at the University of Texas were supported by the National Science Foundation under grant number CBET-0515425.

Funding

This work was supported in part by a grant from the Kentucky Science and Engineering Foundation as per Grant Agreement KSEF-148-502-05-130 with the Kentucky Science and Technology Corporation. In addition, we are pleased to acknowledge funding from the National Science Foundation Research Experiences for Undergraduates Program administered through the University of Kentucky Center of Membrane Sciences (DMR-0453488). Activities at the University of Texas were supported by the National Science Foundation under grant number CBET-0515425.

Funders	Funder number
Kentucky Science and Technology Corporation
University of Kentucky Center of Membrane Sciences	DMR-0453488, CBET-0515425
National Science Foundation (NSF)
Kentucky Science and Engineering Foundation	KSEF-148-502-05-130

Keywords

Dielectric spectroscopy
Dynamic mechanical analysis
Poly(ethylene oxide)

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2007.10.020

Cite this

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title = "Dynamic relaxation characteristics of crosslinked poly(ethylene oxide) copolymer networks: Influence of short chain pendant groups",

abstract = "The dynamic relaxation characteristics of short-branch rubbery amorphous networks prepared by the photopolymerization of poly(ethylene glycol) diacrylate [PEGDA] crosslinker have been investigated using dynamic mechanical analysis and broadband dielectric spectroscopy. Copolymerization with low molecular weight acrylates was used to control effective crosslink density in the networks and led to the insertion of ethylene oxide pendant groups along the network backbone. Substantial differences in the sub-glass and glass-rubber relaxation properties of the copolymers were observed as a function of pendant length and the nature of the pendant terminal group (e.g., -OH vs. -OCH3); the results are compared with prior studies on model copolymers containing longer, more flexible side branches.",

keywords = "Dielectric spectroscopy, Dynamic mechanical analysis, Poly(ethylene oxide)",

author = "Borns, {Matthew A.} and Sumod Kalakkunnath and Kalika, {Douglass S.} and Kusuma, {Victor A.} and Freeman, {Benny D.}",

note = "Funding Information: This work was supported in part by a grant from the Kentucky Science and Engineering Foundation as per Grant Agreement KSEF-148-502-05-130 with the Kentucky Science and Technology Corporation. In addition, we are pleased to acknowledge funding from the National Science Foundation Research Experiences for Undergraduates Program administered through the University of Kentucky Center of Membrane Sciences (DMR-0453488). Activities at the University of Texas were supported by the National Science Foundation under grant number CBET-0515425.",

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doi = "10.1016/j.polymer.2007.10.020",

language = "English",

volume = "48",

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T2 - Influence of short chain pendant groups

AU - Borns, Matthew A.

AU - Kalakkunnath, Sumod

AU - Kalika, Douglass S.

AU - Kusuma, Victor A.

AU - Freeman, Benny D.

N1 - Funding Information: This work was supported in part by a grant from the Kentucky Science and Engineering Foundation as per Grant Agreement KSEF-148-502-05-130 with the Kentucky Science and Technology Corporation. In addition, we are pleased to acknowledge funding from the National Science Foundation Research Experiences for Undergraduates Program administered through the University of Kentucky Center of Membrane Sciences (DMR-0453488). Activities at the University of Texas were supported by the National Science Foundation under grant number CBET-0515425.

PY - 2007/11/30

Y1 - 2007/11/30

N2 - The dynamic relaxation characteristics of short-branch rubbery amorphous networks prepared by the photopolymerization of poly(ethylene glycol) diacrylate [PEGDA] crosslinker have been investigated using dynamic mechanical analysis and broadband dielectric spectroscopy. Copolymerization with low molecular weight acrylates was used to control effective crosslink density in the networks and led to the insertion of ethylene oxide pendant groups along the network backbone. Substantial differences in the sub-glass and glass-rubber relaxation properties of the copolymers were observed as a function of pendant length and the nature of the pendant terminal group (e.g., -OH vs. -OCH3); the results are compared with prior studies on model copolymers containing longer, more flexible side branches.

AB - The dynamic relaxation characteristics of short-branch rubbery amorphous networks prepared by the photopolymerization of poly(ethylene glycol) diacrylate [PEGDA] crosslinker have been investigated using dynamic mechanical analysis and broadband dielectric spectroscopy. Copolymerization with low molecular weight acrylates was used to control effective crosslink density in the networks and led to the insertion of ethylene oxide pendant groups along the network backbone. Substantial differences in the sub-glass and glass-rubber relaxation properties of the copolymers were observed as a function of pendant length and the nature of the pendant terminal group (e.g., -OH vs. -OCH3); the results are compared with prior studies on model copolymers containing longer, more flexible side branches.

KW - Dielectric spectroscopy

KW - Dynamic mechanical analysis

KW - Poly(ethylene oxide)

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JO - Polymer

JF - Polymer

IS - 25

ER -

Dynamic relaxation characteristics of crosslinked poly(ethylene oxide) copolymer networks: Influence of short chain pendant groups

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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