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: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Budapest University of Technology and Economics
2016-09-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0007026&mi=cd |
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| _version_ | 1850057315823124480 |
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| author | N. N. Xia M. Z. Rong M. Q. Zhang S.-W. Kuo |
| author_facet | N. N. Xia M. Z. Rong M. Q. Zhang S.-W. Kuo |
| author_sort | N. N. Xia |
| collection | DOAJ |
| 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. |
| format | Article |
| id | doaj-art-5789d558d06f40bda3d65b8e40f1c120 |
| institution | DOAJ |
| issn | 1788-618X |
| language | English |
| publishDate | 2016-09-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-5789d558d06f40bda3d65b8e40f1c1202025-08-20T02:51:28ZengBudapest University of Technology and EconomicseXPRESS 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 |
| 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 |
| title | 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_short | 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 |
| 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 |