Phase Diagram of Tapered Copolymers Based on Isoprene and Styrene
Although several phase diagrams of block copolymers prepared by sequential monomer addition are known today, the phase diagrams of the corresponding tapered copolymers have not been reported in detail and this despite the industrial importance of the latter. A phase diagram based on a series of tape...
Gespeichert in:
| Veröffentlicht in: | Macromolecular chemistry and physics 2022-05, Vol.223 (10), p.n/a |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | n/a |
|---|---|
| container_issue | 10 |
| container_start_page | |
| container_title | Macromolecular chemistry and physics |
| container_volume | 223 |
| creator | Galanos, Eftyxis Wahlen, Christian Butt, Hans‐Juergen Frey, Holger Floudas, George |
| description | Although several phase diagrams of block copolymers prepared by sequential monomer addition are known today, the phase diagrams of the corresponding tapered copolymers have not been reported in detail and this despite the industrial importance of the latter. A phase diagram based on a series of tapered diblock copolymers is reported, generated by the sec‐butyllithium initiated statistical anionic copolymerization of styrene and isoprene in cyclohexane. This affords copolymers with polyisoprene volume fractions, f, in the range of 0.43 |
| doi_str_mv | 10.1002/macp.202200033 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2666691383</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2666691383</sourcerecordid><originalsourceid>FETCH-LOGICAL-c2873-c063cde9193fd09cdfb4e1312d2a266fa345d453cbbe05bb31b2a65612ebe4d13</originalsourceid><addsrcrecordid>eNqFkE1LAzEQhoMoWKtXzwHPW5PM7rY51tVqoWLBeg75mNWW7mZNWmT_vSkVPXqal-F5ZuAl5JqzEWdM3DbadiPBhGCMAZyQAS8Ez0BCcZpy2mccCnFOLmLcJGTC5HhApssPHZHer_V70A31NV3pDgM6WvnOb_sGQ6R3CXHUt3QefRewRapbR193_SFfkrNabyNe_cwheZs9rKqnbPHyOK-mi8yKyRgyy0qwDiWXUDsmratNjhy4cEKLsqw15IXLC7DGICuMAW6ELouSCzSYOw5DcnO82wX_uce4Uxu_D216qZJflpLDBBI1OlI2-BgD1qoL60aHXnGmDjWpQ03qt6YkyKPwtd5i_w-tnqfV8s_9BhRXauY</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2666691383</pqid></control><display><type>article</type><title>Phase Diagram of Tapered Copolymers Based on Isoprene and Styrene</title><source>Wiley Online Library Journals Frontfile Complete</source><creator>Galanos, Eftyxis ; Wahlen, Christian ; Butt, Hans‐Juergen ; Frey, Holger ; Floudas, George</creator><creatorcontrib>Galanos, Eftyxis ; Wahlen, Christian ; Butt, Hans‐Juergen ; Frey, Holger ; Floudas, George</creatorcontrib><description><![CDATA[Although several phase diagrams of block copolymers prepared by sequential monomer addition are known today, the phase diagrams of the corresponding tapered copolymers have not been reported in detail and this despite the industrial importance of the latter. A phase diagram based on a series of tapered diblock copolymers is reported, generated by the sec‐butyllithium initiated statistical anionic copolymerization of styrene and isoprene in cyclohexane. This affords copolymers with polyisoprene volume fractions, f, in the range of 0.43 < f < 0.82 and total molar mass in the range of 46–160 kg mol–1. The phase diagram consists of lamellae, hexagonally packed cylinders, weakly ordered hexagonally packed cylinders (CYL), and perforated (PL) as well as irregular bicontinuous morphologies. The phase state in the tapered copolymers bears some similarities and several distinct differences in comparison to the respective copolymers prepared by conventional sequential monomer addition. It is shown that the weakly ordered CYL/PL morphologies comprise a large part of the phase diagram that is significantly extended in comparison to diblock copolymers prepared sequentially. On the other hand, the composition range for the bicontinuous morphologies is similar in the two systems (0.64 < fPI < 0.68).
The phase diagram of tapered copolymers of isoprene and styrene with polyisoprene volume fractions, f, in the range 0.43 < f < 0.82 and total molar mass in the range 46–160 kg mol–1 is reported. Despite their high molar mass, the copolymers reside in the weak‐segregation limit. This is important for the design of new thermoplastic elastomers.]]></description><identifier>ISSN: 1022-1352</identifier><identifier>EISSN: 1521-3935</identifier><identifier>DOI: 10.1002/macp.202200033</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>Block copolymers ; Butyllithium ; Copolymerization ; Cyclohexane ; Cylinders ; Fractions ; gradient copolymers ; Isoprene ; Monomers ; Morphology ; nanophase separation ; Phase diagrams ; phase states ; Styrenes ; tapered copolymers</subject><ispartof>Macromolecular chemistry and physics, 2022-05, Vol.223 (10), p.n/a</ispartof><rights>2022 The Authors. Macromolecular Chemistry and Physics published by Wiley‐VCH GmbH</rights><rights>2022. This article is published under http://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2873-c063cde9193fd09cdfb4e1312d2a266fa345d453cbbe05bb31b2a65612ebe4d13</citedby><cites>FETCH-LOGICAL-c2873-c063cde9193fd09cdfb4e1312d2a266fa345d453cbbe05bb31b2a65612ebe4d13</cites><orcidid>0000-0003-4629-3817</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fmacp.202200033$$EPDF$$P50$$Gwiley$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fmacp.202200033$$EHTML$$P50$$Gwiley$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Galanos, Eftyxis</creatorcontrib><creatorcontrib>Wahlen, Christian</creatorcontrib><creatorcontrib>Butt, Hans‐Juergen</creatorcontrib><creatorcontrib>Frey, Holger</creatorcontrib><creatorcontrib>Floudas, George</creatorcontrib><title>Phase Diagram of Tapered Copolymers Based on Isoprene and Styrene</title><title>Macromolecular chemistry and physics</title><description><![CDATA[Although several phase diagrams of block copolymers prepared by sequential monomer addition are known today, the phase diagrams of the corresponding tapered copolymers have not been reported in detail and this despite the industrial importance of the latter. A phase diagram based on a series of tapered diblock copolymers is reported, generated by the sec‐butyllithium initiated statistical anionic copolymerization of styrene and isoprene in cyclohexane. This affords copolymers with polyisoprene volume fractions, f, in the range of 0.43 < f < 0.82 and total molar mass in the range of 46–160 kg mol–1. The phase diagram consists of lamellae, hexagonally packed cylinders, weakly ordered hexagonally packed cylinders (CYL), and perforated (PL) as well as irregular bicontinuous morphologies. The phase state in the tapered copolymers bears some similarities and several distinct differences in comparison to the respective copolymers prepared by conventional sequential monomer addition. It is shown that the weakly ordered CYL/PL morphologies comprise a large part of the phase diagram that is significantly extended in comparison to diblock copolymers prepared sequentially. On the other hand, the composition range for the bicontinuous morphologies is similar in the two systems (0.64 < fPI < 0.68).
The phase diagram of tapered copolymers of isoprene and styrene with polyisoprene volume fractions, f, in the range 0.43 < f < 0.82 and total molar mass in the range 46–160 kg mol–1 is reported. Despite their high molar mass, the copolymers reside in the weak‐segregation limit. This is important for the design of new thermoplastic elastomers.]]></description><subject>Block copolymers</subject><subject>Butyllithium</subject><subject>Copolymerization</subject><subject>Cyclohexane</subject><subject>Cylinders</subject><subject>Fractions</subject><subject>gradient copolymers</subject><subject>Isoprene</subject><subject>Monomers</subject><subject>Morphology</subject><subject>nanophase separation</subject><subject>Phase diagrams</subject><subject>phase states</subject><subject>Styrenes</subject><subject>tapered copolymers</subject><issn>1022-1352</issn><issn>1521-3935</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><recordid>eNqFkE1LAzEQhoMoWKtXzwHPW5PM7rY51tVqoWLBeg75mNWW7mZNWmT_vSkVPXqal-F5ZuAl5JqzEWdM3DbadiPBhGCMAZyQAS8Ez0BCcZpy2mccCnFOLmLcJGTC5HhApssPHZHer_V70A31NV3pDgM6WvnOb_sGQ6R3CXHUt3QefRewRapbR193_SFfkrNabyNe_cwheZs9rKqnbPHyOK-mi8yKyRgyy0qwDiWXUDsmratNjhy4cEKLsqw15IXLC7DGICuMAW6ELouSCzSYOw5DcnO82wX_uce4Uxu_D216qZJflpLDBBI1OlI2-BgD1qoL60aHXnGmDjWpQ03qt6YkyKPwtd5i_w-tnqfV8s_9BhRXauY</recordid><startdate>202205</startdate><enddate>202205</enddate><creator>Galanos, Eftyxis</creator><creator>Wahlen, Christian</creator><creator>Butt, Hans‐Juergen</creator><creator>Frey, Holger</creator><creator>Floudas, George</creator><general>Wiley Subscription Services, Inc</general><scope>24P</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-4629-3817</orcidid></search><sort><creationdate>202205</creationdate><title>Phase Diagram of Tapered Copolymers Based on Isoprene and Styrene</title><author>Galanos, Eftyxis ; Wahlen, Christian ; Butt, Hans‐Juergen ; Frey, Holger ; Floudas, George</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2873-c063cde9193fd09cdfb4e1312d2a266fa345d453cbbe05bb31b2a65612ebe4d13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Block copolymers</topic><topic>Butyllithium</topic><topic>Copolymerization</topic><topic>Cyclohexane</topic><topic>Cylinders</topic><topic>Fractions</topic><topic>gradient copolymers</topic><topic>Isoprene</topic><topic>Monomers</topic><topic>Morphology</topic><topic>nanophase separation</topic><topic>Phase diagrams</topic><topic>phase states</topic><topic>Styrenes</topic><topic>tapered copolymers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Galanos, Eftyxis</creatorcontrib><creatorcontrib>Wahlen, Christian</creatorcontrib><creatorcontrib>Butt, Hans‐Juergen</creatorcontrib><creatorcontrib>Frey, Holger</creatorcontrib><creatorcontrib>Floudas, George</creatorcontrib><collection>Wiley Online Library Open Access</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Macromolecular chemistry and physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Galanos, Eftyxis</au><au>Wahlen, Christian</au><au>Butt, Hans‐Juergen</au><au>Frey, Holger</au><au>Floudas, George</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Phase Diagram of Tapered Copolymers Based on Isoprene and Styrene</atitle><jtitle>Macromolecular chemistry and physics</jtitle><date>2022-05</date><risdate>2022</risdate><volume>223</volume><issue>10</issue><epage>n/a</epage><issn>1022-1352</issn><eissn>1521-3935</eissn><abstract><![CDATA[Although several phase diagrams of block copolymers prepared by sequential monomer addition are known today, the phase diagrams of the corresponding tapered copolymers have not been reported in detail and this despite the industrial importance of the latter. A phase diagram based on a series of tapered diblock copolymers is reported, generated by the sec‐butyllithium initiated statistical anionic copolymerization of styrene and isoprene in cyclohexane. This affords copolymers with polyisoprene volume fractions, f, in the range of 0.43 < f < 0.82 and total molar mass in the range of 46–160 kg mol–1. The phase diagram consists of lamellae, hexagonally packed cylinders, weakly ordered hexagonally packed cylinders (CYL), and perforated (PL) as well as irregular bicontinuous morphologies. The phase state in the tapered copolymers bears some similarities and several distinct differences in comparison to the respective copolymers prepared by conventional sequential monomer addition. It is shown that the weakly ordered CYL/PL morphologies comprise a large part of the phase diagram that is significantly extended in comparison to diblock copolymers prepared sequentially. On the other hand, the composition range for the bicontinuous morphologies is similar in the two systems (0.64 < fPI < 0.68).
The phase diagram of tapered copolymers of isoprene and styrene with polyisoprene volume fractions, f, in the range 0.43 < f < 0.82 and total molar mass in the range 46–160 kg mol–1 is reported. Despite their high molar mass, the copolymers reside in the weak‐segregation limit. This is important for the design of new thermoplastic elastomers.]]></abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/macp.202200033</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-4629-3817</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1022-1352 |
| ispartof | Macromolecular chemistry and physics, 2022-05, Vol.223 (10), p.n/a |
| issn | 1022-1352 1521-3935 |
| language | eng |
| recordid | cdi_proquest_journals_2666691383 |
| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Block copolymers Butyllithium Copolymerization Cyclohexane Cylinders Fractions gradient copolymers Isoprene Monomers Morphology nanophase separation Phase diagrams phase states Styrenes tapered copolymers |
| title | Phase Diagram of Tapered Copolymers Based on Isoprene and Styrene |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-31T07%3A49%3A38IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Phase%20Diagram%20of%20Tapered%20Copolymers%20Based%20on%20Isoprene%20and%20Styrene&rft.jtitle=Macromolecular%20chemistry%20and%20physics&rft.au=Galanos,%20Eftyxis&rft.date=2022-05&rft.volume=223&rft.issue=10&rft.epage=n/a&rft.issn=1022-1352&rft.eissn=1521-3935&rft_id=info:doi/10.1002/macp.202200033&rft_dat=%3Cproquest_cross%3E2666691383%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2666691383&rft_id=info:pmid/&rfr_iscdi=true |