Synthesis of small molar mass perdeuterated polyethylpropylene (d-PEP) as an auxiliary for neutron studies
SummaryAn inert non-crystalline cryoprotectant oil was needed as a non-incoherent scattering matrix for neutron studies of solvent containing crystalline materials. This led us to prepare perdeuterated polyethylpropylene (PEP) with a molar mass around 1100 g/mol. On route to this material an improve...
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| Veröffentlicht in: | Polymer bulletin (Berlin, Germany) Germany), 2000, Vol.43 (6), p.485-490 |
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| container_title | Polymer bulletin (Berlin, Germany) |
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| creator | KREBS, F. C JØRGENSEN, M LEBECH, B ALMDAL, K PEDERSEN, W. B |
| description | SummaryAn inert non-crystalline cryoprotectant oil was needed as a non-incoherent scattering matrix for neutron studies of solvent containing crystalline materials. This led us to prepare perdeuterated polyethylpropylene (PEP) with a molar mass around 1100 g/mol. On route to this material an improved method for the preparation of isoprene-d8 starting from calcium carbide and acetone-d6 was devised. Subsequent anionic polymerization using t-butyl lithium as initiator resulted in an oligomeric perdeuterated polyisoprene (PI) with an average chain length of approx. 15 monomer units and Mw/Mn: 1.1. This polymer was deuterated with D2 and Pd/C (10%) in cyclohexane to yield the desired perdeutero polymer (PEP-d). The polymer fulfill the important properties that it does not crystallize at low temperature and has a low neutron scattering efficiency. |
| doi_str_mv | 10.1007/s002890050005 |
| format | Article |
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C ; JØRGENSEN, M ; LEBECH, B ; ALMDAL, K ; PEDERSEN, W. B</creator><creatorcontrib>KREBS, F. C ; JØRGENSEN, M ; LEBECH, B ; ALMDAL, K ; PEDERSEN, W. B</creatorcontrib><description>SummaryAn inert non-crystalline cryoprotectant oil was needed as a non-incoherent scattering matrix for neutron studies of solvent containing crystalline materials. This led us to prepare perdeuterated polyethylpropylene (PEP) with a molar mass around 1100 g/mol. On route to this material an improved method for the preparation of isoprene-d8 starting from calcium carbide and acetone-d6 was devised. Subsequent anionic polymerization using t-butyl lithium as initiator resulted in an oligomeric perdeuterated polyisoprene (PI) with an average chain length of approx. 15 monomer units and Mw/Mn: 1.1. This polymer was deuterated with D2 and Pd/C (10%) in cyclohexane to yield the desired perdeutero polymer (PEP-d). The polymer fulfill the important properties that it does not crystallize at low temperature and has a low neutron scattering efficiency.</description><identifier>ISSN: 0170-0839</identifier><identifier>EISSN: 1436-2449</identifier><identifier>DOI: 10.1007/s002890050005</identifier><identifier>CODEN: POBUDR</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Anionic polymerization ; Applied sciences ; Cyclohexane ; Deuteration ; Exact sciences and technology ; Incoherent scattering ; Isoprene ; Lithium ; Low temperature ; Neutron scattering ; Organic polymers ; Physicochemistry of polymers ; Polyimide resins ; Polymers ; Polymers with particular properties ; Preparation, kinetics, thermodynamics, mechanism and catalysts ; S matrix theory</subject><ispartof>Polymer bulletin (Berlin, Germany), 2000, Vol.43 (6), p.485-490</ispartof><rights>2000 INIST-CNRS</rights><rights>Springer-Verlag Berlin Heidelberg 2000.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c207t-df7351ca3d1f4495c4a7705dea67452d90539d21b8be54869badc130cd6cd9123</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/2917858001?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>314,776,780,4010,21367,27900,27901,27902,33721,43781</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1321392$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>KREBS, F. 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This polymer was deuterated with D2 and Pd/C (10%) in cyclohexane to yield the desired perdeutero polymer (PEP-d). The polymer fulfill the important properties that it does not crystallize at low temperature and has a low neutron scattering efficiency.</description><subject>Anionic polymerization</subject><subject>Applied sciences</subject><subject>Cyclohexane</subject><subject>Deuteration</subject><subject>Exact sciences and technology</subject><subject>Incoherent scattering</subject><subject>Isoprene</subject><subject>Lithium</subject><subject>Low temperature</subject><subject>Neutron scattering</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Polyimide resins</subject><subject>Polymers</subject><subject>Polymers with particular properties</subject><subject>Preparation, kinetics, thermodynamics, mechanism and catalysts</subject><subject>S matrix theory</subject><issn>0170-0839</issn><issn>1436-2449</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpVUE1LxDAUDKLgunr0HtCDHqovSdM0R1nWD1hwQT2XbJKyXbJtzWvB_nsjLoiHx-PBzLyZIeSSwR0DUPcIwEsNICHNEZmxXBQZz3N9TGbAFGRQCn1KzhB3kO6iYDOye5vaYeuxQdrVFPcmBLrvgol0bxBp76Pz4-CjGbyjfRcmP2yn0Meun4JvPb1x2Xq5vqUGqWmpGb-a0Jg40bqLtE3M2LUUh9E1Hs_JSW0C-ovDnpOPx-X74jlbvT69LB5WmeWghszVSkhmjXCsTt6lzY1SIJ03hcoldxqk0I6zTbnxMi8LvTHOMgHWFdZpxsWcXP3qJpefo8eh2nVjbNPLimumSlmm9AmV_aJs7BCjr6s-NvtkvWJQ_dRZ_asz4a8PqgatCXU0rW3wjyQ4E5qLb8SedP4</recordid><startdate>2000</startdate><enddate>2000</enddate><creator>KREBS, F. 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B</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c207t-df7351ca3d1f4495c4a7705dea67452d90539d21b8be54869badc130cd6cd9123</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Anionic polymerization</topic><topic>Applied sciences</topic><topic>Cyclohexane</topic><topic>Deuteration</topic><topic>Exact sciences and technology</topic><topic>Incoherent scattering</topic><topic>Isoprene</topic><topic>Lithium</topic><topic>Low temperature</topic><topic>Neutron scattering</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Polyimide resins</topic><topic>Polymers</topic><topic>Polymers with particular properties</topic><topic>Preparation, kinetics, thermodynamics, mechanism and catalysts</topic><topic>S matrix theory</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>KREBS, F. C</creatorcontrib><creatorcontrib>JØRGENSEN, M</creatorcontrib><creatorcontrib>LEBECH, B</creatorcontrib><creatorcontrib>ALMDAL, K</creatorcontrib><creatorcontrib>PEDERSEN, W. 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C</au><au>JØRGENSEN, M</au><au>LEBECH, B</au><au>ALMDAL, K</au><au>PEDERSEN, W. B</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synthesis of small molar mass perdeuterated polyethylpropylene (d-PEP) as an auxiliary for neutron studies</atitle><jtitle>Polymer bulletin (Berlin, Germany)</jtitle><date>2000</date><risdate>2000</risdate><volume>43</volume><issue>6</issue><spage>485</spage><epage>490</epage><pages>485-490</pages><issn>0170-0839</issn><eissn>1436-2449</eissn><coden>POBUDR</coden><abstract>SummaryAn inert non-crystalline cryoprotectant oil was needed as a non-incoherent scattering matrix for neutron studies of solvent containing crystalline materials. This led us to prepare perdeuterated polyethylpropylene (PEP) with a molar mass around 1100 g/mol. On route to this material an improved method for the preparation of isoprene-d8 starting from calcium carbide and acetone-d6 was devised. Subsequent anionic polymerization using t-butyl lithium as initiator resulted in an oligomeric perdeuterated polyisoprene (PI) with an average chain length of approx. 15 monomer units and Mw/Mn: 1.1. This polymer was deuterated with D2 and Pd/C (10%) in cyclohexane to yield the desired perdeutero polymer (PEP-d). The polymer fulfill the important properties that it does not crystallize at low temperature and has a low neutron scattering efficiency.</abstract><cop>Heidelberg</cop><cop>Berlin</cop><cop>New York, NY</cop><pub>Springer</pub><doi>10.1007/s002890050005</doi><tpages>6</tpages></addata></record> |
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| ispartof | Polymer bulletin (Berlin, Germany), 2000, Vol.43 (6), p.485-490 |
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| source | SpringerNature Complete Journals; ProQuest Central |
| subjects | Anionic polymerization Applied sciences Cyclohexane Deuteration Exact sciences and technology Incoherent scattering Isoprene Lithium Low temperature Neutron scattering Organic polymers Physicochemistry of polymers Polyimide resins Polymers Polymers with particular properties Preparation, kinetics, thermodynamics, mechanism and catalysts S matrix theory |
| title | Synthesis of small molar mass perdeuterated polyethylpropylene (d-PEP) as an auxiliary for neutron studies |
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