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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Budapest University of Technology
2016-09-01
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Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0007026&mi=cd |
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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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1725713384684388352 |