Water soluble copolymers. 55: N-isopropylacrylamide-co-acrylamide copolymers in drag reduction: Effect of molecular structure, hydration, and flow geometry on drag reduction performance
Non‐ionic, hydrophobically associating, water soluble N‐isopropylacrylamide‐co‐acrylamide (IPAM) copolymers have been synthesized and characterized specifically for the study of drag reduction. The drag reduction (DR) performance has been measured with a rotating disk rheometer and a capillary flow...
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| Veröffentlicht in: | Polymer engineering and science 1994-09, Vol.34 (18), p.1429-1439 |
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| creator | Mumick, Pavneet S. Hester, Roger D. McCormick, Charles L. |
| description | Non‐ionic, hydrophobically associating, water soluble N‐isopropylacrylamide‐co‐acrylamide (IPAM) copolymers have been synthesized and characterized specifically for the study of drag reduction. The drag reduction (DR) performance has been measured with a rotating disk rheometer and a capillary flow apparatus. The DR studies were performed in deionized water, 0.514 M NaCl and 1 M urea. DR efficiency is dependent on copolymer structure, composition, and solvation. Copolymers showing intermediate values of hydrophobic character are found to be the most effective drag reducers. For this copolymer series, IPAM‐70 (the copolymer synthesized with 70 mole% N‐isopropylacrylamide in the feed) is the most efficient drag reducer. The DR properties of the IPAM copolymers are influenced by hydrophobic associations as well as hydrogen bonding. The effects of salts from the Hofmeister series, cosolvents such as dioxane, and temperature are also examined. Drag reduction performance of the various copolymers is correlated to empirical relationships involving degree of polymerization, second virial coefficient or other solvation parameters, and concentration. |
| doi_str_mv | 10.1002/pen.760341810 |
| format | Article |
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The drag reduction (DR) performance has been measured with a rotating disk rheometer and a capillary flow apparatus. The DR studies were performed in deionized water, 0.514 M NaCl and 1 M urea. DR efficiency is dependent on copolymer structure, composition, and solvation. Copolymers showing intermediate values of hydrophobic character are found to be the most effective drag reducers. For this copolymer series, IPAM‐70 (the copolymer synthesized with 70 mole% N‐isopropylacrylamide in the feed) is the most efficient drag reducer. The DR properties of the IPAM copolymers are influenced by hydrophobic associations as well as hydrogen bonding. The effects of salts from the Hofmeister series, cosolvents such as dioxane, and temperature are also examined. 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The drag reduction (DR) performance has been measured with a rotating disk rheometer and a capillary flow apparatus. The DR studies were performed in deionized water, 0.514 M NaCl and 1 M urea. DR efficiency is dependent on copolymer structure, composition, and solvation. Copolymers showing intermediate values of hydrophobic character are found to be the most effective drag reducers. For this copolymer series, IPAM‐70 (the copolymer synthesized with 70 mole% N‐isopropylacrylamide in the feed) is the most efficient drag reducer. The DR properties of the IPAM copolymers are influenced by hydrophobic associations as well as hydrogen bonding. The effects of salts from the Hofmeister series, cosolvents such as dioxane, and temperature are also examined. 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Hester, Roger D. ; McCormick, Charles L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3480-8641a78d1683992e5e6cf83c632ddbd944625e11852d36ede51efacb1f866b7d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mumick, Pavneet S.</creatorcontrib><creatorcontrib>Hester, Roger D.</creatorcontrib><creatorcontrib>McCormick, Charles L.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Engineered Materials Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><jtitle>Polymer engineering and science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mumick, Pavneet S.</au><au>Hester, Roger D.</au><au>McCormick, Charles L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Water soluble copolymers. 55: N-isopropylacrylamide-co-acrylamide copolymers in drag reduction: Effect of molecular structure, hydration, and flow geometry on drag reduction performance</atitle><jtitle>Polymer engineering and science</jtitle><addtitle>Polym Eng Sci</addtitle><date>1994-09</date><risdate>1994</risdate><volume>34</volume><issue>18</issue><spage>1429</spage><epage>1439</epage><pages>1429-1439</pages><issn>0032-3888</issn><eissn>1548-2634</eissn><coden>PYESAZ</coden><abstract>Non‐ionic, hydrophobically associating, water soluble N‐isopropylacrylamide‐co‐acrylamide (IPAM) copolymers have been synthesized and characterized specifically for the study of drag reduction. The drag reduction (DR) performance has been measured with a rotating disk rheometer and a capillary flow apparatus. The DR studies were performed in deionized water, 0.514 M NaCl and 1 M urea. DR efficiency is dependent on copolymer structure, composition, and solvation. Copolymers showing intermediate values of hydrophobic character are found to be the most effective drag reducers. For this copolymer series, IPAM‐70 (the copolymer synthesized with 70 mole% N‐isopropylacrylamide in the feed) is the most efficient drag reducer. The DR properties of the IPAM copolymers are influenced by hydrophobic associations as well as hydrogen bonding. The effects of salts from the Hofmeister series, cosolvents such as dioxane, and temperature are also examined. Drag reduction performance of the various copolymers is correlated to empirical relationships involving degree of polymerization, second virial coefficient or other solvation parameters, and concentration.</abstract><cop>Brookfield</cop><pub>Society of Plastics Engineers</pub><doi>10.1002/pen.760341810</doi><tpages>11</tpages></addata></record> |
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| title | Water soluble copolymers. 55: N-isopropylacrylamide-co-acrylamide copolymers in drag reduction: Effect of molecular structure, hydration, and flow geometry on drag reduction performance |
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