Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer

The authors report that during tensile stress relaxation test of a polyurethane crosslinked by catechol-iron coordination bonds, the stress gradually increases with time after the initial drop, which differs from the documented behaviors of other materials. Based on model experiment and structural c...

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Main Authors: N. N. Xia, M. Z. Rong, M. Q. Zhang, S.-W. Kuo
Format: Article
Language:English
Published: Budapest University of Technology 2016-09-01
Series:eXPRESS Polymer Letters
Subjects:
Online Access:http://www.expresspolymlett.com/letolt.php?file=EPL-0007026&mi=cd
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spelling doaj-5789d558d06f40bda3d65b8e40f1c1202020-11-24T22:38:23ZengBudapest University of Technology eXPRESS Polymer Letters1788-618X2016-09-0110974274910.3144/expresspolymlett.2016.68Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymerN. N. XiaM. Z. RongM. Q. ZhangS.-W. KuoThe authors report that during tensile stress relaxation test of a polyurethane crosslinked by catechol-iron coordination bonds, the stress gradually increases with time after the initial drop, which differs from the documented behaviors of other materials. Based on model experiment and structural characterization, water triggered rapid increase of dynamic crosslinkages accompanied by Poisson’s contraction is found to be responsible for the stress intensification effect. In addition, the influential factors are carefully discussed. The findings might help to develop novel polymeric materials with improved application performance under loading conditions.http://www.expresspolymlett.com/letolt.php?file=EPL-0007026&mi=cdSmart polymersstress relaxationpolyurethanedynamic coordination bondcrosslink
collection DOAJ
language English
format Article
sources DOAJ
author N. N. Xia
M. Z. Rong
M. Q. Zhang
S.-W. Kuo
spellingShingle N. N. Xia
M. Z. Rong
M. Q. Zhang
S.-W. Kuo
Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer
eXPRESS Polymer Letters
Smart polymers
stress relaxation
polyurethane
dynamic coordination bond
crosslink
author_facet N. N. Xia
M. Z. Rong
M. Q. Zhang
S.-W. Kuo
author_sort N. N. Xia
title Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer
title_short Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer
title_full Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer
title_fullStr Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer
title_full_unstemmed Stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer
title_sort stress intensification – an abnormal phenomenon observed during stress relaxation of dynamic coordination polymer
publisher Budapest University of Technology
series eXPRESS Polymer Letters
issn 1788-618X
publishDate 2016-09-01
description The authors report that during tensile stress relaxation test of a polyurethane crosslinked by catechol-iron coordination bonds, the stress gradually increases with time after the initial drop, which differs from the documented behaviors of other materials. Based on model experiment and structural characterization, water triggered rapid increase of dynamic crosslinkages accompanied by Poisson’s contraction is found to be responsible for the stress intensification effect. In addition, the influential factors are carefully discussed. The findings might help to develop novel polymeric materials with improved application performance under loading conditions.
topic Smart polymers
stress relaxation
polyurethane
dynamic coordination bond
crosslink
url http://www.expresspolymlett.com/letolt.php?file=EPL-0007026&mi=cd
work_keys_str_mv AT nnxia stressintensificationanabnormalphenomenonobservedduringstressrelaxationofdynamiccoordinationpolymer
AT mzrong stressintensificationanabnormalphenomenonobservedduringstressrelaxationofdynamiccoordinationpolymer
AT mqzhang stressintensificationanabnormalphenomenonobservedduringstressrelaxationofdynamiccoordinationpolymer
AT swkuo stressintensificationanabnormalphenomenonobservedduringstressrelaxationofdynamiccoordinationpolymer
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