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A computer simulation of the effect of temperature on melt chain dimensions of random short chain branched polyethylene
It is well established that the chain dimensions of a polymer are intimately related to the viscoelastic fingerprint and the relevant macroscopic properties of the material such as the entanglement modulus and its melt viscosity. In this work, the chain properties have been obtained by means of mole...
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Published in: | Polymer (Guilford) 2021-05, Vol.225, p.123772, Article 123772 |
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creator | Ramos, Javier Vega, Juan F. Martínez-Salazar, Javier |
description | It is well established that the chain dimensions of a polymer are intimately related to the viscoelastic fingerprint and the relevant macroscopic properties of the material such as the entanglement modulus and its melt viscosity. In this work, the chain properties have been obtained by means of molecular dynamics simulations computed at different temperatures in a series of ethylene/1-butene copolymers with constant number of carbons in the backbone but varying branch content, from linear polyethylene to poly(1-butene) with a range of molecular weight extending from 7012 g/mol till 14025 g/mol. The simulations were performed in a time window up to 5 μs at four different temperatures between 450 and 600 K. Simulation results are in good agreement with previous SANS experiments performed in this kind of model polymers. The influence of the amount of ethyl branches on the temperature dependence of the backbone conformation was analyzed. Thus, the observed trends of chain dimensions with increasing SCB content and temperature can be explained by the variation in content of the different trans-trans, gauche-trans and gauche-gauche dyads along the polymer backbone.
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•Molecular Dynamics simulations on a set of ethylene/1-butene at different temperatures.•Effect of short branch frequency and temperature on melt chain dimensions.•Strong influence of short branches on the temperature dependence due to different population of trans/gauche states. |
doi_str_mv | 10.1016/j.polymer.2021.123772 |
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[Display omitted]
•Molecular Dynamics simulations on a set of ethylene/1-butene at different temperatures.•Effect of short branch frequency and temperature on melt chain dimensions.•Strong influence of short branches on the temperature dependence due to different population of trans/gauche states.</description><identifier>ISSN: 0032-3861</identifier><identifier>EISSN: 1873-2291</identifier><identifier>DOI: 10.1016/j.polymer.2021.123772</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Backbone ; Chain branching ; Computer simulation ; Conformation ; Conformational analysis ; Copolymers ; Entanglement ; Molecular dynamics ; Molecular weight ; Polyethylene ; Polyethylenes ; Polymers ; Random copolymers ; Short chain branch ; Simulation ; Temperature ; Temperature dependence ; Temperature effects ; Viscoelasticity ; Windows (intervals)</subject><ispartof>Polymer (Guilford), 2021-05, Vol.225, p.123772, Article 123772</ispartof><rights>2022 The Authors</rights><rights>Copyright Elsevier BV May 26, 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-40afe8f81290a3c63647489abd98c399830671cb93ecd0b9a6e50ce2fd099223</citedby><cites>FETCH-LOGICAL-c384t-40afe8f81290a3c63647489abd98c399830671cb93ecd0b9a6e50ce2fd099223</cites><orcidid>0000-0002-0377-4410 ; 0000-0003-0755-0155 ; 0000-0003-3556-7632</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Ramos, Javier</creatorcontrib><creatorcontrib>Vega, Juan F.</creatorcontrib><creatorcontrib>Martínez-Salazar, Javier</creatorcontrib><title>A computer simulation of the effect of temperature on melt chain dimensions of random short chain branched polyethylene</title><title>Polymer (Guilford)</title><description>It is well established that the chain dimensions of a polymer are intimately related to the viscoelastic fingerprint and the relevant macroscopic properties of the material such as the entanglement modulus and its melt viscosity. In this work, the chain properties have been obtained by means of molecular dynamics simulations computed at different temperatures in a series of ethylene/1-butene copolymers with constant number of carbons in the backbone but varying branch content, from linear polyethylene to poly(1-butene) with a range of molecular weight extending from 7012 g/mol till 14025 g/mol. The simulations were performed in a time window up to 5 μs at four different temperatures between 450 and 600 K. Simulation results are in good agreement with previous SANS experiments performed in this kind of model polymers. The influence of the amount of ethyl branches on the temperature dependence of the backbone conformation was analyzed. Thus, the observed trends of chain dimensions with increasing SCB content and temperature can be explained by the variation in content of the different trans-trans, gauche-trans and gauche-gauche dyads along the polymer backbone.
[Display omitted]
•Molecular Dynamics simulations on a set of ethylene/1-butene at different temperatures.•Effect of short branch frequency and temperature on melt chain dimensions.•Strong influence of short branches on the temperature dependence due to different population of trans/gauche states.</description><subject>Backbone</subject><subject>Chain branching</subject><subject>Computer simulation</subject><subject>Conformation</subject><subject>Conformational analysis</subject><subject>Copolymers</subject><subject>Entanglement</subject><subject>Molecular dynamics</subject><subject>Molecular weight</subject><subject>Polyethylene</subject><subject>Polyethylenes</subject><subject>Polymers</subject><subject>Random copolymers</subject><subject>Short chain branch</subject><subject>Simulation</subject><subject>Temperature</subject><subject>Temperature dependence</subject><subject>Temperature effects</subject><subject>Viscoelasticity</subject><subject>Windows (intervals)</subject><issn>0032-3861</issn><issn>1873-2291</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LxDAQhoMouK7-BCHguTUf3bY5ybL4BQte9h6y6ZSmtE1NUmX_valdz56GmXnf-XgQuqckpYTmj2062u7Ug0sZYTSljBcFu0ArWhY8YUzQS7QihLOElzm9Rjfet4QQtmHZCn1vsbb9OAVw2Jt-6lQwdsC2xqEBDHUNOvxm0I_gVJgc4NjvoQtYN8oMuDI9DD6a_Kxzaqhsj31j3Z_gGGu6gQrPV0JoTh0McIuuatV5uDvHNTq8PB92b8n-4_V9t90nmpdZSDKiaijrkjJBFNc5z7MiK4U6VqLUXIiSk7yg-ig46IochcphQzSwuiJCMMbX6GEZOzr7OYEPsrWTG-JGyTZccEoLUUTVZlFpZ713UMvRmV65k6REzohlK8-I5YxYLoij72nxQfzgy8Su1wYGDZVxkZusrPlnwg-RBYlp</recordid><startdate>20210526</startdate><enddate>20210526</enddate><creator>Ramos, Javier</creator><creator>Vega, Juan F.</creator><creator>Martínez-Salazar, Javier</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T7</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><orcidid>https://orcid.org/0000-0002-0377-4410</orcidid><orcidid>https://orcid.org/0000-0003-0755-0155</orcidid><orcidid>https://orcid.org/0000-0003-3556-7632</orcidid></search><sort><creationdate>20210526</creationdate><title>A computer simulation of the effect of temperature on melt chain dimensions of random short chain branched polyethylene</title><author>Ramos, Javier ; Vega, Juan F. ; Martínez-Salazar, Javier</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-40afe8f81290a3c63647489abd98c399830671cb93ecd0b9a6e50ce2fd099223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Backbone</topic><topic>Chain branching</topic><topic>Computer simulation</topic><topic>Conformation</topic><topic>Conformational analysis</topic><topic>Copolymers</topic><topic>Entanglement</topic><topic>Molecular dynamics</topic><topic>Molecular weight</topic><topic>Polyethylene</topic><topic>Polyethylenes</topic><topic>Polymers</topic><topic>Random copolymers</topic><topic>Short chain branch</topic><topic>Simulation</topic><topic>Temperature</topic><topic>Temperature dependence</topic><topic>Temperature effects</topic><topic>Viscoelasticity</topic><topic>Windows (intervals)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ramos, Javier</creatorcontrib><creatorcontrib>Vega, Juan F.</creatorcontrib><creatorcontrib>Martínez-Salazar, Javier</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Polymer (Guilford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ramos, Javier</au><au>Vega, Juan F.</au><au>Martínez-Salazar, Javier</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A computer simulation of the effect of temperature on melt chain dimensions of random short chain branched polyethylene</atitle><jtitle>Polymer (Guilford)</jtitle><date>2021-05-26</date><risdate>2021</risdate><volume>225</volume><spage>123772</spage><pages>123772-</pages><artnum>123772</artnum><issn>0032-3861</issn><eissn>1873-2291</eissn><abstract>It is well established that the chain dimensions of a polymer are intimately related to the viscoelastic fingerprint and the relevant macroscopic properties of the material such as the entanglement modulus and its melt viscosity. In this work, the chain properties have been obtained by means of molecular dynamics simulations computed at different temperatures in a series of ethylene/1-butene copolymers with constant number of carbons in the backbone but varying branch content, from linear polyethylene to poly(1-butene) with a range of molecular weight extending from 7012 g/mol till 14025 g/mol. The simulations were performed in a time window up to 5 μs at four different temperatures between 450 and 600 K. Simulation results are in good agreement with previous SANS experiments performed in this kind of model polymers. The influence of the amount of ethyl branches on the temperature dependence of the backbone conformation was analyzed. Thus, the observed trends of chain dimensions with increasing SCB content and temperature can be explained by the variation in content of the different trans-trans, gauche-trans and gauche-gauche dyads along the polymer backbone.
[Display omitted]
•Molecular Dynamics simulations on a set of ethylene/1-butene at different temperatures.•Effect of short branch frequency and temperature on melt chain dimensions.•Strong influence of short branches on the temperature dependence due to different population of trans/gauche states.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.polymer.2021.123772</doi><orcidid>https://orcid.org/0000-0002-0377-4410</orcidid><orcidid>https://orcid.org/0000-0003-0755-0155</orcidid><orcidid>https://orcid.org/0000-0003-3556-7632</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Backbone Chain branching Computer simulation Conformation Conformational analysis Copolymers Entanglement Molecular dynamics Molecular weight Polyethylene Polyethylenes Polymers Random copolymers Short chain branch Simulation Temperature Temperature dependence Temperature effects Viscoelasticity Windows (intervals) |
title | A computer simulation of the effect of temperature on melt chain dimensions of random short chain branched polyethylene |
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