Influence of mixing performance on polymerization of acrylamide in capillary microreactors
Nonliving free radical polymerization of acrylamide was chosen as a model reaction to investigate the effect of mixing performance on the polymerization in capillary microreactors. The polymerization rate was enhanced by increasing the volumetric flow rate and the reaction temperature at a constant...
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Veröffentlicht in: | AIChE journal 2018-05, Vol.64 (5), p.1828-1840 |
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creator | Song, Yang Shang, Minjing Li, Guangxiao Luo, Zheng‐Hong Su, Yuanhai |
description | Nonliving free radical polymerization of acrylamide was chosen as a model reaction to investigate the effect of mixing performance on the polymerization in capillary microreactors. The polymerization rate was enhanced by increasing the volumetric flow rate and the reaction temperature at a constant residence time. However, higher temperatures led to lower Mn and larger PDI. The reaction mixture viscosity increased significantly during the polymerization. Both diffusion and dispersion coefficients were calculated to evaluate the mixing performance in microreactors. The capillary microreactor with a larger inner diameter led to higher monomer conversions, lower Mn and larger PDI compared to the capillary microreactor with a smaller inner diameter, which could be explained through a heat balance analysis for the polymerization and the dispersion effect. Moreover, it was found that the addition of a pre‐mixing stage minimized the effect of insufficient mixing between the initiators and the monomers on the polymerization. © 2017 American Institute of Chemical Engineers AIChE J, 64: 1828–1840, 2018 |
doi_str_mv | 10.1002/aic.16046 |
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The polymerization rate was enhanced by increasing the volumetric flow rate and the reaction temperature at a constant residence time. However, higher temperatures led to lower Mn and larger PDI. The reaction mixture viscosity increased significantly during the polymerization. Both diffusion and dispersion coefficients were calculated to evaluate the mixing performance in microreactors. The capillary microreactor with a larger inner diameter led to higher monomer conversions, lower Mn and larger PDI compared to the capillary microreactor with a smaller inner diameter, which could be explained through a heat balance analysis for the polymerization and the dispersion effect. Moreover, it was found that the addition of a pre‐mixing stage minimized the effect of insufficient mixing between the initiators and the monomers on the polymerization. © 2017 American Institute of Chemical Engineers AIChE J, 64: 1828–1840, 2018</description><identifier>ISSN: 0001-1541</identifier><identifier>EISSN: 1547-5905</identifier><identifier>DOI: 10.1002/aic.16046</identifier><language>eng</language><publisher>New York: American Institute of Chemical Engineers</publisher><subject>Acrylamide ; diffusion ; Dispersion ; Flow rates ; Flow velocity ; Free radical polymerization ; Free radicals ; Heat balance ; Initiators ; microreactor ; Microreactors ; mixing ; Monomers ; Polymerization ; Viscosity</subject><ispartof>AIChE journal, 2018-05, Vol.64 (5), p.1828-1840</ispartof><rights>2017 American Institute of Chemical Engineers</rights><rights>2018 American Institute of Chemical Engineers</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4006-163bd578b5c4e3f919c9bb6e7c2ea8ae3ba0806c83ca9bc4beaaf93f8946a78e3</citedby><cites>FETCH-LOGICAL-c4006-163bd578b5c4e3f919c9bb6e7c2ea8ae3ba0806c83ca9bc4beaaf93f8946a78e3</cites><orcidid>0000-0002-0718-301X ; 0000-0001-9011-6020</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%2Faic.16046$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Faic.16046$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Song, Yang</creatorcontrib><creatorcontrib>Shang, Minjing</creatorcontrib><creatorcontrib>Li, Guangxiao</creatorcontrib><creatorcontrib>Luo, Zheng‐Hong</creatorcontrib><creatorcontrib>Su, Yuanhai</creatorcontrib><title>Influence of mixing performance on polymerization of acrylamide in capillary microreactors</title><title>AIChE journal</title><description>Nonliving free radical polymerization of acrylamide was chosen as a model reaction to investigate the effect of mixing performance on the polymerization in capillary microreactors. The polymerization rate was enhanced by increasing the volumetric flow rate and the reaction temperature at a constant residence time. However, higher temperatures led to lower Mn and larger PDI. The reaction mixture viscosity increased significantly during the polymerization. Both diffusion and dispersion coefficients were calculated to evaluate the mixing performance in microreactors. The capillary microreactor with a larger inner diameter led to higher monomer conversions, lower Mn and larger PDI compared to the capillary microreactor with a smaller inner diameter, which could be explained through a heat balance analysis for the polymerization and the dispersion effect. Moreover, it was found that the addition of a pre‐mixing stage minimized the effect of insufficient mixing between the initiators and the monomers on the polymerization. © 2017 American Institute of Chemical Engineers AIChE J, 64: 1828–1840, 2018</description><subject>Acrylamide</subject><subject>diffusion</subject><subject>Dispersion</subject><subject>Flow rates</subject><subject>Flow velocity</subject><subject>Free radical polymerization</subject><subject>Free radicals</subject><subject>Heat balance</subject><subject>Initiators</subject><subject>microreactor</subject><subject>Microreactors</subject><subject>mixing</subject><subject>Monomers</subject><subject>Polymerization</subject><subject>Viscosity</subject><issn>0001-1541</issn><issn>1547-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kD9PwzAQxS0EEqUw8A0iMTGE2nFix2NV8adSJRZYWKyLe0aunDg4rSB8ekzDynR6p9-7e3qEXDN6xygtFuDMHRO0FCdkxqpS5pWi1SmZUUpZnhbsnFwMwy6pQtbFjLytO-sP2BnMgs1a9-W696zHaENs4bjtsj74scXovmHvkkwcmDh6aN0WM9dlBnrnPcQx-U0MEcHsQxwuyZkFP-DV35yT14f7l9VTvnl-XK-Wm9yUlIqcCd5sK1k3lSmRW8WUUU0jUJoCoQbkDdCaClNzA6oxZYMAVnFbq1KArJHPyc10t4_h44DDXu_CIXbppS5owRkvpJKJup2olHAYIlrdR9em0JpR_VudTtXpY3WJXUzsp_M4_g_q5Xo1OX4A8Btx1w</recordid><startdate>201805</startdate><enddate>201805</enddate><creator>Song, Yang</creator><creator>Shang, Minjing</creator><creator>Li, Guangxiao</creator><creator>Luo, Zheng‐Hong</creator><creator>Su, Yuanhai</creator><general>American Institute of Chemical Engineers</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7U5</scope><scope>8FD</scope><scope>C1K</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-0718-301X</orcidid><orcidid>https://orcid.org/0000-0001-9011-6020</orcidid></search><sort><creationdate>201805</creationdate><title>Influence of mixing performance on polymerization of acrylamide in capillary microreactors</title><author>Song, Yang ; Shang, Minjing ; Li, Guangxiao ; Luo, Zheng‐Hong ; Su, Yuanhai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4006-163bd578b5c4e3f919c9bb6e7c2ea8ae3ba0806c83ca9bc4beaaf93f8946a78e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Acrylamide</topic><topic>diffusion</topic><topic>Dispersion</topic><topic>Flow rates</topic><topic>Flow velocity</topic><topic>Free radical polymerization</topic><topic>Free radicals</topic><topic>Heat balance</topic><topic>Initiators</topic><topic>microreactor</topic><topic>Microreactors</topic><topic>mixing</topic><topic>Monomers</topic><topic>Polymerization</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Song, Yang</creatorcontrib><creatorcontrib>Shang, Minjing</creatorcontrib><creatorcontrib>Li, Guangxiao</creatorcontrib><creatorcontrib>Luo, Zheng‐Hong</creatorcontrib><creatorcontrib>Su, Yuanhai</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>AIChE journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Song, Yang</au><au>Shang, Minjing</au><au>Li, Guangxiao</au><au>Luo, Zheng‐Hong</au><au>Su, Yuanhai</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of mixing performance on polymerization of acrylamide in capillary microreactors</atitle><jtitle>AIChE journal</jtitle><date>2018-05</date><risdate>2018</risdate><volume>64</volume><issue>5</issue><spage>1828</spage><epage>1840</epage><pages>1828-1840</pages><issn>0001-1541</issn><eissn>1547-5905</eissn><abstract>Nonliving free radical polymerization of acrylamide was chosen as a model reaction to investigate the effect of mixing performance on the polymerization in capillary microreactors. The polymerization rate was enhanced by increasing the volumetric flow rate and the reaction temperature at a constant residence time. However, higher temperatures led to lower Mn and larger PDI. The reaction mixture viscosity increased significantly during the polymerization. Both diffusion and dispersion coefficients were calculated to evaluate the mixing performance in microreactors. The capillary microreactor with a larger inner diameter led to higher monomer conversions, lower Mn and larger PDI compared to the capillary microreactor with a smaller inner diameter, which could be explained through a heat balance analysis for the polymerization and the dispersion effect. Moreover, it was found that the addition of a pre‐mixing stage minimized the effect of insufficient mixing between the initiators and the monomers on the polymerization. © 2017 American Institute of Chemical Engineers AIChE J, 64: 1828–1840, 2018</abstract><cop>New York</cop><pub>American Institute of Chemical Engineers</pub><doi>10.1002/aic.16046</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0002-0718-301X</orcidid><orcidid>https://orcid.org/0000-0001-9011-6020</orcidid></addata></record> |
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subjects | Acrylamide diffusion Dispersion Flow rates Flow velocity Free radical polymerization Free radicals Heat balance Initiators microreactor Microreactors mixing Monomers Polymerization Viscosity |
title | Influence of mixing performance on polymerization of acrylamide in capillary microreactors |
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