RHEOLOGICAL PROPERTIES OF LIQUID CRYSTALLINE COPOLY (ρ-HYDR0XYBENZ0ATE/BISPHENOL A TEREPHTHALATE)
Various aspects of the rheological behaviour of liquid crystalline copolyesters, i.e.,samples of copoly （p-hydroxybenzoate / bisphenol A terephthalate）, were explored by usingInstron capillary rheometer. The experimental results indicated that the apparent viscositywas affected significantly by shea...
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| Veröffentlicht in: | 高分子科学：英文版 1996 (2), p.97-104 |
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| creator | 王勇 吴大诚 李瑞霞 |
| description | Various aspects of the rheological behaviour of liquid crystalline copolyesters, i.e.,samples of copoly （p-hydroxybenzoate / bisphenol A terephthalate）, were explored by usingInstron capillary rheometer. The experimental results indicated that the apparent viscositywas affected significantly by shear rate, melt temperature and p-hydroxybenzoate unit con-tent. The flow activation energies △Eη are in the range of 205.1 to 74.5 kJ/mol, dependingon the shear rate of 10-1000 s-1, at temperature 568-603K. These copolyesters exhibit ayield phenomenon in the shear flow, and the values of yield stress decrease with increasingtemperature. It is quite unusual that the extrudate of the copolyester shows the smallerswelling ratio even than unity at the lower temperature and lower shear rates. |
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The experimental results indicated that the apparent viscositywas affected significantly by shear rate, melt temperature and p-hydroxybenzoate unit con-tent. The flow activation energies △Eη are in the range of 205.1 to 74.5 kJ/mol, dependingon the shear rate of 10-1000 s-1, at temperature 568-603K. These copolyesters exhibit ayield phenomenon in the shear flow, and the values of yield stress decrease with increasingtemperature. It is quite unusual that the extrudate of the copolyester shows the smallerswelling ratio even than unity at the lower temperature and lower shear rates.</description><identifier>ISSN: 0256-7679</identifier><identifier>EISSN: 1439-6203</identifier><language>eng</language><subject>Copoly ; crystalline ; Liquid ; p-hydroxybenzoate/bisphenol ; polymer ; Rheology ; stress ; terephthalate ; Yield</subject><ispartof>高分子科学：英文版, 1996 (2), p.97-104</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/86788X/86788X.jpg</thumbnail><link.rule.ids>314,780,784,4024</link.rule.ids></links><search><creatorcontrib>王勇 吴大诚 李瑞霞</creatorcontrib><title>RHEOLOGICAL PROPERTIES OF LIQUID CRYSTALLINE COPOLY (ρ-HYDR0XYBENZ0ATE/BISPHENOL A TEREPHTHALATE)</title><title>高分子科学：英文版</title><addtitle>Chinese Journal of Polymer Science</addtitle><description>Various aspects of the rheological behaviour of liquid crystalline copolyesters, i.e.,samples of copoly （p-hydroxybenzoate / bisphenol A terephthalate）, were explored by usingInstron capillary rheometer. The experimental results indicated that the apparent viscositywas affected significantly by shear rate, melt temperature and p-hydroxybenzoate unit con-tent. The flow activation energies △Eη are in the range of 205.1 to 74.5 kJ/mol, dependingon the shear rate of 10-1000 s-1, at temperature 568-603K. These copolyesters exhibit ayield phenomenon in the shear flow, and the values of yield stress decrease with increasingtemperature. It is quite unusual that the extrudate of the copolyester shows the smallerswelling ratio even than unity at the lower temperature and lower shear rates.</description><subject>Copoly</subject><subject>crystalline</subject><subject>Liquid</subject><subject>p-hydroxybenzoate/bisphenol</subject><subject>polymer</subject><subject>Rheology</subject><subject>stress</subject><subject>terephthalate</subject><subject>Yield</subject><issn>0256-7679</issn><issn>1439-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNotjU1LwzAAQIMoWKf_IeBFD8Gk-eyx6zJTCE1tM7BeRpelc6JTVy8e_YX-JQfu9A4P3jsBCWE0QyLF9BQkOOUCSSGzc3Axji8YCya5TMCqMdpZd18WuYV142rd-FK30M2hLR8W5QwWTdf63Nqy0rBwtbMdvPn9QaabNfixm-rqCede303Ltja6chbm0OtG18ab3B7M7SU4G_rXMV4dOQGLufaFQcctCoTQLzSEXvCMpSvCmAgRKxpwHPoYKJdKSsUDzdIYpRQ8KtzHg8DrNY2ZCnIYOKMTcP3fDc_vu83ndrdZfuy3b_3-e8kwJoRzRhT9A21KSkA</recordid><startdate>1996</startdate><enddate>1996</enddate><creator>王勇 吴大诚 李瑞霞</creator><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W94</scope><scope>~WA</scope></search><sort><creationdate>1996</creationdate><title>RHEOLOGICAL PROPERTIES OF LIQUID CRYSTALLINE COPOLY (ρ-HYDR0XYBENZ0ATE/BISPHENOL A TEREPHTHALATE)</title><author>王勇 吴大诚 李瑞霞</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c113t-fca65942b1446ce083c0efaec35787785c392ee7765e80aeec30dd3e98c7ff543</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Copoly</topic><topic>crystalline</topic><topic>Liquid</topic><topic>p-hydroxybenzoate/bisphenol</topic><topic>polymer</topic><topic>Rheology</topic><topic>stress</topic><topic>terephthalate</topic><topic>Yield</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>王勇 吴大诚 李瑞霞</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-自然科学</collection><collection>中文科技期刊数据库- 镜像站点</collection><jtitle>高分子科学：英文版</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>王勇 吴大诚 李瑞霞</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>RHEOLOGICAL PROPERTIES OF LIQUID CRYSTALLINE COPOLY (ρ-HYDR0XYBENZ0ATE/BISPHENOL A TEREPHTHALATE)</atitle><jtitle>高分子科学：英文版</jtitle><addtitle>Chinese Journal of Polymer Science</addtitle><date>1996</date><risdate>1996</risdate><issue>2</issue><spage>97</spage><epage>104</epage><pages>97-104</pages><issn>0256-7679</issn><eissn>1439-6203</eissn><abstract>Various aspects of the rheological behaviour of liquid crystalline copolyesters, i.e.,samples of copoly （p-hydroxybenzoate / bisphenol A terephthalate）, were explored by usingInstron capillary rheometer. The experimental results indicated that the apparent viscositywas affected significantly by shear rate, melt temperature and p-hydroxybenzoate unit con-tent. The flow activation energies △Eη are in the range of 205.1 to 74.5 kJ/mol, dependingon the shear rate of 10-1000 s-1, at temperature 568-603K. These copolyesters exhibit ayield phenomenon in the shear flow, and the values of yield stress decrease with increasingtemperature. It is quite unusual that the extrudate of the copolyester shows the smallerswelling ratio even than unity at the lower temperature and lower shear rates.</abstract><tpages>8</tpages></addata></record> |
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| ispartof | 高分子科学：英文版, 1996 (2), p.97-104 |
| issn | 0256-7679 1439-6203 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Copoly crystalline Liquid p-hydroxybenzoate/bisphenol polymer Rheology stress terephthalate Yield |
| title | RHEOLOGICAL PROPERTIES OF LIQUID CRYSTALLINE COPOLY (ρ-HYDR0XYBENZ0ATE/BISPHENOL A TEREPHTHALATE) |
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