Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures
Rheological properties of mixtures of hydroxypropylmethyl cellulose (HPMC), a nonionic associative cellulose ether, and sodium dodecylsulfate (SDS), an anionic surfactant, were investigated by viscosity measurements performed at different shear rates (0.1-6000 s-1). HPMC/SDS mixtures containing diff...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2014-01-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2014/0352-51391300132K.pdf |
| _version_ | 1819085543240105984 |
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| author | Katona Jaroslav M. Njaradi Sandra Đ. Sovilj Verica J. Petrović Lidija B. Marčeta Brankica B. Milanović Jadranka L. |
| author_facet | Katona Jaroslav M. Njaradi Sandra Đ. Sovilj Verica J. Petrović Lidija B. Marčeta Brankica B. Milanović Jadranka L. |
| author_sort | Katona Jaroslav M. |
| collection | DOAJ |
| description | Rheological properties of mixtures of hydroxypropylmethyl cellulose (HPMC), a nonionic associative cellulose ether, and sodium dodecylsulfate (SDS), an anionic surfactant, were investigated by viscosity measurements performed at different shear rates (0.1-6000 s-1). HPMC/SDS mixtures containing different concentrations of SDS (CSDS=0.00-3.50 % w/w) and HPMC concentrations which
corresponded to the overlap parameter c/c*=3, 6, and 12 were prepared. All HPMC/SDS mixtures were found to be shear-thinning when examined in a low-end-to mid-range of the applied shear rates. The degree of shear-thinning, n, and viscosity of the mixtures were influenced by composition of HPMC/SDS mixtures and HPMC-SDS complex formation. The changes in n ranged from values typical for highly shear thinning to almost perfectly Newtonian liquids, and were more pronounced as c/c* was increased from 3 to 6 and 12. A change in flow profile and a buildup of the first normal stress difference (N1) was observed in HPMC/SDS mixtures with c/c*=6 and 12 and CSDS 0.55-1.00 % and 0.55-2.50 %, respectively, when a critical shear rate, crit. was exceeded, suggesting that a shear-induced structure formation in the mixtures took place. [Projekat Ministartsva nauke Republike Srbije, br. Grant III 46010] |
| first_indexed | 2024-12-21T21:06:01Z |
| format | Article |
| id | doaj.art-52a752c3ce7542e2b1e9025be4d9b3e3 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-21T21:06:01Z |
| publishDate | 2014-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-52a752c3ce7542e2b1e9025be4d9b3e32022-12-21T18:50:16ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212014-01-0179445746810.2298/JSC130807132K0352-51391300132KRheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixturesKatona Jaroslav M.0Njaradi Sandra Đ.1Sovilj Verica J.2Petrović Lidija B.3Marčeta Brankica B.4Milanović Jadranka L.5Faculty of Technology, Novi SadFaculty of Technology, Novi SadFaculty of Technology, Novi SadFaculty of Technology, Novi SadFaculty of Technology, Novi SadFaculty of Technology, Novi SadRheological properties of mixtures of hydroxypropylmethyl cellulose (HPMC), a nonionic associative cellulose ether, and sodium dodecylsulfate (SDS), an anionic surfactant, were investigated by viscosity measurements performed at different shear rates (0.1-6000 s-1). HPMC/SDS mixtures containing different concentrations of SDS (CSDS=0.00-3.50 % w/w) and HPMC concentrations which corresponded to the overlap parameter c/c*=3, 6, and 12 were prepared. All HPMC/SDS mixtures were found to be shear-thinning when examined in a low-end-to mid-range of the applied shear rates. The degree of shear-thinning, n, and viscosity of the mixtures were influenced by composition of HPMC/SDS mixtures and HPMC-SDS complex formation. The changes in n ranged from values typical for highly shear thinning to almost perfectly Newtonian liquids, and were more pronounced as c/c* was increased from 3 to 6 and 12. A change in flow profile and a buildup of the first normal stress difference (N1) was observed in HPMC/SDS mixtures with c/c*=6 and 12 and CSDS 0.55-1.00 % and 0.55-2.50 %, respectively, when a critical shear rate, crit. was exceeded, suggesting that a shear-induced structure formation in the mixtures took place. [Projekat Ministartsva nauke Republike Srbije, br. Grant III 46010]http://www.doiserbia.nb.rs/img/doi/0352-5139/2014/0352-51391300132K.pdfpolymer-surfactant interactionHPMC-SDS interactionshear-thinningshear-thickeningshear-induced structure formation |
| spellingShingle | Katona Jaroslav M. Njaradi Sandra Đ. Sovilj Verica J. Petrović Lidija B. Marčeta Brankica B. Milanović Jadranka L. Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures Journal of the Serbian Chemical Society polymer-surfactant interaction HPMC-SDS interaction shear-thinning shear-thickening shear-induced structure formation |
| title | Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures |
| title_full | Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures |
| title_fullStr | Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures |
| title_full_unstemmed | Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures |
| title_short | Rheological properties of hydroxypropylmethyl cellulose/sodium dodecylsulfate mixtures |
| title_sort | rheological properties of hydroxypropylmethyl cellulose sodium dodecylsulfate mixtures |
| topic | polymer-surfactant interaction HPMC-SDS interaction shear-thinning shear-thickening shear-induced structure formation |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2014/0352-51391300132K.pdf |
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