Rheological Properties of Aqueous Acid Solutions of Chitosan: Experiment and Calculations of the Viscometric Functions on the Basis of a Mesoscopic Model
The rheological properties of chitosan solutions in acetic acid at 20°C in the range of polymer concentrations from 0.5 to 8 mass% and acid concentrations from 2 to 70% have been investigated. With the use of a modified Vinogradov–Pokrovskii model based on the microstructural approach to the descrip...
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| Veröffentlicht in: | Journal of engineering physics and thermophysics 2016-05, Vol.89 (3), p.642-651 |
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| creator | Shipovskaya, A. B. Abramov, A. Yu Pyshnograi, G. V. Aziz, Al Joda Hyder Nadom |
| description | The rheological properties of chitosan solutions in acetic acid at 20°C in the range of polymer concentrations from 0.5 to 8 mass% and acid concentrations from 2 to 70% have been investigated. With the use of a modified Vinogradov–Pokrovskii model based on the microstructural approach to the description of polymer fluid dynamics, numerical solutions of gradient dependences of viscometric functions of aqueous acid solutions of chitosan have been obtained. It has been established that the numerical solution describes with good accuracy the experimental viscosity rheograms. The values of the highest Newton viscosity η
max
have been calculated. The concentration modes of semidiluted and concentrated solutions have been determined by the dependence of η
max
on the polymer concentration, and the range of concentrations in which the mass transfer mechanism changes and a fluctuation network is formed has been found. It has been shown that the concentration of acetic acid practically does not influence the structure and character of flow of chitosan solutions, the formation concentration of a network, and the efficiency of its labile nodes. |
| doi_str_mv | 10.1007/s10891-016-1422-8 |
| format | Article |
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max
have been calculated. The concentration modes of semidiluted and concentrated solutions have been determined by the dependence of η
max
on the polymer concentration, and the range of concentrations in which the mass transfer mechanism changes and a fluctuation network is formed has been found. It has been shown that the concentration of acetic acid practically does not influence the structure and character of flow of chitosan solutions, the formation concentration of a network, and the efficiency of its labile nodes.</description><identifier>ISSN: 1062-0125</identifier><identifier>EISSN: 1573-871X</identifier><identifier>DOI: 10.1007/s10891-016-1422-8</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Acetic acid ; Chitosan ; Classical Mechanics ; Complex Systems ; Computational fluid dynamics ; Engineering ; Engineering Thermodynamics ; Fluid dynamics ; Heat and Mass Transfer ; Industrial Chemistry/Chemical Engineering ; Mathematical analysis ; Mathematical models ; Networks ; Organic acids ; Polymers ; Rheological properties ; Thermodynamics ; Transfer Processes in Rheological Media ; Viscosity</subject><ispartof>Journal of engineering physics and thermophysics, 2016-05, Vol.89 (3), p.642-651</ispartof><rights>Springer Science+Business Media New York 2016</rights><rights>COPYRIGHT 2016 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c422t-1f0c3dca3564c968eb615067da802d9dfed11204e4ea4078f422b2a0a374c99e3</citedby><cites>FETCH-LOGICAL-c422t-1f0c3dca3564c968eb615067da802d9dfed11204e4ea4078f422b2a0a374c99e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10891-016-1422-8$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10891-016-1422-8$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Shipovskaya, A. B.</creatorcontrib><creatorcontrib>Abramov, A. Yu</creatorcontrib><creatorcontrib>Pyshnograi, G. V.</creatorcontrib><creatorcontrib>Aziz, Al Joda Hyder Nadom</creatorcontrib><title>Rheological Properties of Aqueous Acid Solutions of Chitosan: Experiment and Calculations of the Viscometric Functions on the Basis of a Mesoscopic Model</title><title>Journal of engineering physics and thermophysics</title><addtitle>J Eng Phys Thermophy</addtitle><description>The rheological properties of chitosan solutions in acetic acid at 20°C in the range of polymer concentrations from 0.5 to 8 mass% and acid concentrations from 2 to 70% have been investigated. With the use of a modified Vinogradov–Pokrovskii model based on the microstructural approach to the description of polymer fluid dynamics, numerical solutions of gradient dependences of viscometric functions of aqueous acid solutions of chitosan have been obtained. It has been established that the numerical solution describes with good accuracy the experimental viscosity rheograms. The values of the highest Newton viscosity η
max
have been calculated. The concentration modes of semidiluted and concentrated solutions have been determined by the dependence of η
max
on the polymer concentration, and the range of concentrations in which the mass transfer mechanism changes and a fluctuation network is formed has been found. It has been shown that the concentration of acetic acid practically does not influence the structure and character of flow of chitosan solutions, the formation concentration of a network, and the efficiency of its labile nodes.</description><subject>Acetic acid</subject><subject>Chitosan</subject><subject>Classical Mechanics</subject><subject>Complex Systems</subject><subject>Computational fluid dynamics</subject><subject>Engineering</subject><subject>Engineering Thermodynamics</subject><subject>Fluid dynamics</subject><subject>Heat and Mass Transfer</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Networks</subject><subject>Organic acids</subject><subject>Polymers</subject><subject>Rheological properties</subject><subject>Thermodynamics</subject><subject>Transfer Processes in Rheological Media</subject><subject>Viscosity</subject><issn>1062-0125</issn><issn>1573-871X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kl9rFDEUxQdRsFY_gG8BX_RhapL5l_FtXfoPWpRWxbdwm7mzm5JNtkkG6kfx23p3pwgLInlIyPmdkHM5RfFW8BPBefcxCa56UXLRlqKWslTPiiPRdFWpOvHzOZ15K0mVzcviVUr3nPNe1dVR8ftmjcGFlTXg2NcYthizxcTCyBYPE4YpsYWxA7sNbso2-L2yXNscEvhP7PSRDHaDPjPwA1uCM5ODv2BeI_thkwkbzNEadjZ58yT6vfgZkt2TwK4xBSK3hF2HAd3r4sUILuGbp_24-H52-m15UV59Ob9cLq5KQzlzKUZuqsFA1bS16VuFd61oeNsNoLgc-mHEQQjJa6wRat6pkVx3EjhUHfE9VsfF-_ndbQyUOGW9oR-jc-B38bVQsmlEK3lD6LsZXYFDbf0YcgSzw_Wi7pu-UlUriTr5B0VrwI01weNo6f7A8OHAQEzGx7yCKSV9eXtzyIqZNTGkFHHUW5o_xF9acL1rgp6boKkJetcErcgjZ08i1q8w6vswRU9D_Y_pD2Ywtg8</recordid><startdate>20160501</startdate><enddate>20160501</enddate><creator>Shipovskaya, A. B.</creator><creator>Abramov, A. Yu</creator><creator>Pyshnograi, G. V.</creator><creator>Aziz, Al Joda Hyder Nadom</creator><general>Springer US</general><general>Springer</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20160501</creationdate><title>Rheological Properties of Aqueous Acid Solutions of Chitosan: Experiment and Calculations of the Viscometric Functions on the Basis of a Mesoscopic Model</title><author>Shipovskaya, A. B. ; Abramov, A. Yu ; Pyshnograi, G. V. ; Aziz, Al Joda Hyder Nadom</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c422t-1f0c3dca3564c968eb615067da802d9dfed11204e4ea4078f422b2a0a374c99e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Acetic acid</topic><topic>Chitosan</topic><topic>Classical Mechanics</topic><topic>Complex Systems</topic><topic>Computational fluid dynamics</topic><topic>Engineering</topic><topic>Engineering Thermodynamics</topic><topic>Fluid dynamics</topic><topic>Heat and Mass Transfer</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Mathematical analysis</topic><topic>Mathematical models</topic><topic>Networks</topic><topic>Organic acids</topic><topic>Polymers</topic><topic>Rheological properties</topic><topic>Thermodynamics</topic><topic>Transfer Processes in Rheological Media</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shipovskaya, A. B.</creatorcontrib><creatorcontrib>Abramov, A. Yu</creatorcontrib><creatorcontrib>Pyshnograi, G. V.</creatorcontrib><creatorcontrib>Aziz, Al Joda Hyder Nadom</creatorcontrib><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of engineering physics and thermophysics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shipovskaya, A. B.</au><au>Abramov, A. Yu</au><au>Pyshnograi, G. V.</au><au>Aziz, Al Joda Hyder Nadom</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rheological Properties of Aqueous Acid Solutions of Chitosan: Experiment and Calculations of the Viscometric Functions on the Basis of a Mesoscopic Model</atitle><jtitle>Journal of engineering physics and thermophysics</jtitle><stitle>J Eng Phys Thermophy</stitle><date>2016-05-01</date><risdate>2016</risdate><volume>89</volume><issue>3</issue><spage>642</spage><epage>651</epage><pages>642-651</pages><issn>1062-0125</issn><eissn>1573-871X</eissn><abstract>The rheological properties of chitosan solutions in acetic acid at 20°C in the range of polymer concentrations from 0.5 to 8 mass% and acid concentrations from 2 to 70% have been investigated. With the use of a modified Vinogradov–Pokrovskii model based on the microstructural approach to the description of polymer fluid dynamics, numerical solutions of gradient dependences of viscometric functions of aqueous acid solutions of chitosan have been obtained. It has been established that the numerical solution describes with good accuracy the experimental viscosity rheograms. The values of the highest Newton viscosity η
max
have been calculated. The concentration modes of semidiluted and concentrated solutions have been determined by the dependence of η
max
on the polymer concentration, and the range of concentrations in which the mass transfer mechanism changes and a fluctuation network is formed has been found. It has been shown that the concentration of acetic acid practically does not influence the structure and character of flow of chitosan solutions, the formation concentration of a network, and the efficiency of its labile nodes.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10891-016-1422-8</doi><tpages>10</tpages></addata></record> |
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| subjects | Acetic acid Chitosan Classical Mechanics Complex Systems Computational fluid dynamics Engineering Engineering Thermodynamics Fluid dynamics Heat and Mass Transfer Industrial Chemistry/Chemical Engineering Mathematical analysis Mathematical models Networks Organic acids Polymers Rheological properties Thermodynamics Transfer Processes in Rheological Media Viscosity |
| title | Rheological Properties of Aqueous Acid Solutions of Chitosan: Experiment and Calculations of the Viscometric Functions on the Basis of a Mesoscopic Model |
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