P– V– T properties of a polymer liquid crystal subjected to pre-drawing at several temperatures
We have studied the copolymer of poly(ethylene terephthalate) (PET) with 0.6 mole fraction of p-hydroxybenzoic acid (PHB). It is a longitudinal polymer liquid crystal (PLC). A number of otherwise identical samples were subjected to drawing to achieve in turn 20%, 40%, 60%, 80% and 100% increase in l...
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| Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2005-03, Vol.357 (3), p.500-506 |
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| container_title | Physica. B, Condensed matter |
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| creator | Broza, Georg Castaño, Victor M. Martinez-Barrera, Gonzalo Menard, Kevin P. Simões, Carla |
| description | We have studied the copolymer of poly(ethylene terephthalate) (PET) with 0.6
mole fraction of p-hydroxybenzoic acid (PHB). It is a longitudinal polymer liquid crystal (PLC). A number of otherwise identical samples were subjected to drawing to achieve in turn 20%, 40%, 60%, 80% and 100% increase in length. The drawing was performed isothermally at 60, 100 and 140
°C. Pressure–volume–temperature
(
P
–
V
–
T
)
results have been obtained for pressures up to 200
J
cm
−3 and temperatures up to 150
°C or so. Parameters of the Hartmann equation of state have been evaluated. Drawing first results in an increase in specific (and also free) volume, then in a decrease caused by increased orientation of the PLC, and finally in an apparent increase caused by the appearance of voids. The tensile modulus
E
has been determined for all pre-drawn samples. It reflects the volumetric changes
a rebours: the initial increase in specific volume results in lower
E
values, orientation in
E
increase, and void formation in a second decrease. |
| doi_str_mv | 10.1016/j.physb.2004.12.018 |
| format | Article |
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mole fraction of p-hydroxybenzoic acid (PHB). It is a longitudinal polymer liquid crystal (PLC). A number of otherwise identical samples were subjected to drawing to achieve in turn 20%, 40%, 60%, 80% and 100% increase in length. The drawing was performed isothermally at 60, 100 and 140
°C. Pressure–volume–temperature
(
P
–
V
–
T
)
results have been obtained for pressures up to 200
J
cm
−3 and temperatures up to 150
°C or so. Parameters of the Hartmann equation of state have been evaluated. Drawing first results in an increase in specific (and also free) volume, then in a decrease caused by increased orientation of the PLC, and finally in an apparent increase caused by the appearance of voids. The tensile modulus
E
has been determined for all pre-drawn samples. It reflects the volumetric changes
a rebours: the initial increase in specific volume results in lower
E
values, orientation in
E
increase, and void formation in a second decrease.</description><identifier>ISSN: 0921-4526</identifier><identifier>EISSN: 1873-2135</identifier><identifier>DOI: 10.1016/j.physb.2004.12.018</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Exact sciences and technology ; Extrusion moulding ; Free volume ; Machinery and processing ; Moulding ; Plastics ; PLC ; Polymer industry, paints, wood ; Polymer liquid crystals ; Pre-drawing ; P–V–T relationships ; Technology of polymers</subject><ispartof>Physica. B, Condensed matter, 2005-03, Vol.357 (3), p.500-506</ispartof><rights>2005 Elsevier B.V.</rights><rights>2005 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c364t-2bf1634c545f7dd4a136267534b7b6d181f459d2d93e44781ee488b796626a663</citedby><cites>FETCH-LOGICAL-c364t-2bf1634c545f7dd4a136267534b7b6d181f459d2d93e44781ee488b796626a663</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.physb.2004.12.018$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16581730$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Broza, Georg</creatorcontrib><creatorcontrib>Castaño, Victor M.</creatorcontrib><creatorcontrib>Martinez-Barrera, Gonzalo</creatorcontrib><creatorcontrib>Menard, Kevin P.</creatorcontrib><creatorcontrib>Simões, Carla</creatorcontrib><title>P– V– T properties of a polymer liquid crystal subjected to pre-drawing at several temperatures</title><title>Physica. B, Condensed matter</title><description>We have studied the copolymer of poly(ethylene terephthalate) (PET) with 0.6
mole fraction of p-hydroxybenzoic acid (PHB). It is a longitudinal polymer liquid crystal (PLC). A number of otherwise identical samples were subjected to drawing to achieve in turn 20%, 40%, 60%, 80% and 100% increase in length. The drawing was performed isothermally at 60, 100 and 140
°C. Pressure–volume–temperature
(
P
–
V
–
T
)
results have been obtained for pressures up to 200
J
cm
−3 and temperatures up to 150
°C or so. Parameters of the Hartmann equation of state have been evaluated. Drawing first results in an increase in specific (and also free) volume, then in a decrease caused by increased orientation of the PLC, and finally in an apparent increase caused by the appearance of voids. The tensile modulus
E
has been determined for all pre-drawn samples. It reflects the volumetric changes
a rebours: the initial increase in specific volume results in lower
E
values, orientation in
E
increase, and void formation in a second decrease.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>Extrusion moulding</subject><subject>Free volume</subject><subject>Machinery and processing</subject><subject>Moulding</subject><subject>Plastics</subject><subject>PLC</subject><subject>Polymer industry, paints, wood</subject><subject>Polymer liquid crystals</subject><subject>Pre-drawing</subject><subject>P–V–T relationships</subject><subject>Technology of polymers</subject><issn>0921-4526</issn><issn>1873-2135</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNp9kM9u1DAQhy0EEkvpE3DxBW4JHttxkgMHVPFPqgSHtlfLsSfgVXaTepxWe-MdeEOepN5uJW74ML58v99oPsbegKhBgHm_rZdfBxpqKYSuQdYCumdsA12rKgmqec42opdQ6Uaal-wV0VaUBy1smP_x9_cffnMcV3xJ84IpRyQ-j9zxZZ4OO0x8irdrDNynA2U3cVqHLfqMgee5ZLAKyd3H_U_uMie8w1SYjLtS5fKakF6zF6ObCM-f_jN2_fnT1cXX6vL7l28XHy8rr4zOlRxGMEr7RjdjG4J2oIw0baP00A4mQAejbvogQ69Q67YDRN11Q9ubgjlj1Bl7d-otd9yuSNnuInmcJrfHeSUr-0b1RVcB1Qn0aSZKONolxZ1LBwvCHoXarX0Uao9CLUhbhJbU26d6R95NY3J7H-lf1DQdtEoU7sOJw3LrXcRkyUfcewwxFW02zPG_ex4An7uOjg</recordid><startdate>20050315</startdate><enddate>20050315</enddate><creator>Broza, Georg</creator><creator>Castaño, Victor M.</creator><creator>Martinez-Barrera, Gonzalo</creator><creator>Menard, Kevin P.</creator><creator>Simões, Carla</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20050315</creationdate><title>P– V– T properties of a polymer liquid crystal subjected to pre-drawing at several temperatures</title><author>Broza, Georg ; Castaño, Victor M. ; Martinez-Barrera, Gonzalo ; Menard, Kevin P. ; Simões, Carla</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-2bf1634c545f7dd4a136267534b7b6d181f459d2d93e44781ee488b796626a663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Applied sciences</topic><topic>Exact sciences and technology</topic><topic>Extrusion moulding</topic><topic>Free volume</topic><topic>Machinery and processing</topic><topic>Moulding</topic><topic>Plastics</topic><topic>PLC</topic><topic>Polymer industry, paints, wood</topic><topic>Polymer liquid crystals</topic><topic>Pre-drawing</topic><topic>P–V–T relationships</topic><topic>Technology of polymers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Broza, Georg</creatorcontrib><creatorcontrib>Castaño, Victor M.</creatorcontrib><creatorcontrib>Martinez-Barrera, Gonzalo</creatorcontrib><creatorcontrib>Menard, Kevin P.</creatorcontrib><creatorcontrib>Simões, Carla</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. B, Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Broza, Georg</au><au>Castaño, Victor M.</au><au>Martinez-Barrera, Gonzalo</au><au>Menard, Kevin P.</au><au>Simões, Carla</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>P– V– T properties of a polymer liquid crystal subjected to pre-drawing at several temperatures</atitle><jtitle>Physica. B, Condensed matter</jtitle><date>2005-03-15</date><risdate>2005</risdate><volume>357</volume><issue>3</issue><spage>500</spage><epage>506</epage><pages>500-506</pages><issn>0921-4526</issn><eissn>1873-2135</eissn><abstract>We have studied the copolymer of poly(ethylene terephthalate) (PET) with 0.6
mole fraction of p-hydroxybenzoic acid (PHB). It is a longitudinal polymer liquid crystal (PLC). A number of otherwise identical samples were subjected to drawing to achieve in turn 20%, 40%, 60%, 80% and 100% increase in length. The drawing was performed isothermally at 60, 100 and 140
°C. Pressure–volume–temperature
(
P
–
V
–
T
)
results have been obtained for pressures up to 200
J
cm
−3 and temperatures up to 150
°C or so. Parameters of the Hartmann equation of state have been evaluated. Drawing first results in an increase in specific (and also free) volume, then in a decrease caused by increased orientation of the PLC, and finally in an apparent increase caused by the appearance of voids. The tensile modulus
E
has been determined for all pre-drawn samples. It reflects the volumetric changes
a rebours: the initial increase in specific volume results in lower
E
values, orientation in
E
increase, and void formation in a second decrease.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physb.2004.12.018</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0921-4526 |
| ispartof | Physica. B, Condensed matter, 2005-03, Vol.357 (3), p.500-506 |
| issn | 0921-4526 1873-2135 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_29539016 |
| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Applied sciences Exact sciences and technology Extrusion moulding Free volume Machinery and processing Moulding Plastics PLC Polymer industry, paints, wood Polymer liquid crystals Pre-drawing P–V–T relationships Technology of polymers |
| title | P– V– T properties of a polymer liquid crystal subjected to pre-drawing at several temperatures |
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