Liquid Crystal H-Bonded Polymer Networks under Mechanical Stress
The orientation behavior of liquid crystal networks having the Sm CA structure stabilized by H-bonds has been studied. The mesogenic groups formed by hydrogen bonds generate a layered structure of the polymer. The hydrogen bonds are responsible for the elastic properties of the liquid crystal polyme...
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| Veröffentlicht in: | Macromolecules 2003-05, Vol.36 (9), p.3417-3423 |
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| container_issue | 9 |
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| container_title | Macromolecules |
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| creator | Shandryuk, Georgii A Kuptsov, Sergei A Shatalova, Alina M Plate, Nicolai A Talroze, Raisa V |
| description | The orientation behavior of liquid crystal networks having the Sm CA structure stabilized by H-bonds has been studied. The mesogenic groups formed by hydrogen bonds generate a layered structure of the polymer. The hydrogen bonds are responsible for the elastic properties of the liquid crystal polymer network and the mechanism of its plastic flow above the threshold strain. The mechanical response is interpreted in terms of the mechanism of breaking and reconnecting H-bonds under stress. The local sliding of layers is possible if H-bonds are temporarily disconnected and then reconnected again to restore the LC structure. The anisotropy of the mechanical properties of the H-bonded polymer materials is observed in the monodomain LC networks. |
| doi_str_mv | 10.1021/ma0257346 |
| format | Article |
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The mesogenic groups formed by hydrogen bonds generate a layered structure of the polymer. The hydrogen bonds are responsible for the elastic properties of the liquid crystal polymer network and the mechanism of its plastic flow above the threshold strain. The mechanical response is interpreted in terms of the mechanism of breaking and reconnecting H-bonds under stress. The local sliding of layers is possible if H-bonds are temporarily disconnected and then reconnected again to restore the LC structure. The anisotropy of the mechanical properties of the H-bonded polymer materials is observed in the monodomain LC networks.</description><identifier>ISSN: 0024-9297</identifier><identifier>EISSN: 1520-5835</identifier><identifier>DOI: 10.1021/ma0257346</identifier><language>eng</language><publisher>American Chemical Society</publisher><ispartof>Macromolecules, 2003-05, Vol.36 (9), p.3417-3423</ispartof><rights>Copyright © 2003 American Chemical Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a295t-523648750724a16bf920d427da6f425f6ce9944ea4e4d33fbb0e74adfae64bc13</citedby><cites>FETCH-LOGICAL-a295t-523648750724a16bf920d427da6f425f6ce9944ea4e4d33fbb0e74adfae64bc13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/ma0257346$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/ma0257346$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>315,781,785,2766,27081,27929,27930,56743,56793</link.rule.ids></links><search><creatorcontrib>Shandryuk, Georgii A</creatorcontrib><creatorcontrib>Kuptsov, Sergei A</creatorcontrib><creatorcontrib>Shatalova, Alina M</creatorcontrib><creatorcontrib>Plate, Nicolai A</creatorcontrib><creatorcontrib>Talroze, Raisa V</creatorcontrib><title>Liquid Crystal H-Bonded Polymer Networks under Mechanical Stress</title><title>Macromolecules</title><addtitle>Macromolecules</addtitle><description>The orientation behavior of liquid crystal networks having the Sm CA structure stabilized by H-bonds has been studied. The mesogenic groups formed by hydrogen bonds generate a layered structure of the polymer. The hydrogen bonds are responsible for the elastic properties of the liquid crystal polymer network and the mechanism of its plastic flow above the threshold strain. The mechanical response is interpreted in terms of the mechanism of breaking and reconnecting H-bonds under stress. The local sliding of layers is possible if H-bonds are temporarily disconnected and then reconnected again to restore the LC structure. 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The mesogenic groups formed by hydrogen bonds generate a layered structure of the polymer. The hydrogen bonds are responsible for the elastic properties of the liquid crystal polymer network and the mechanism of its plastic flow above the threshold strain. The mechanical response is interpreted in terms of the mechanism of breaking and reconnecting H-bonds under stress. The local sliding of layers is possible if H-bonds are temporarily disconnected and then reconnected again to restore the LC structure. The anisotropy of the mechanical properties of the H-bonded polymer materials is observed in the monodomain LC networks.</abstract><pub>American Chemical Society</pub><doi>10.1021/ma0257346</doi><tpages>7</tpages></addata></record> |
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| source | American Chemical Society Publications |
| title | Liquid Crystal H-Bonded Polymer Networks under Mechanical Stress |
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