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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Gupta, Nivika R. Torris A. T., Arun Wadgaonkar, Prakash P. Rajamohanan, P. R. Ducouret, Guylaine Hourdet, Dominique Creton, Costantino Badiger, Manohar V. |
| Description | Country affiliation: India Author Affiliation: Gupta NR ( Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India.); Torris A T A ( Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India.); Wadgaonkar PP ( Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India.); Rajamohanan PR ( Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India.); Ducouret G ( ESPCI ParisTech/Sorbonne Universités, UPMC Univ Paris 06/CNRS UMR 7615, SIMM, 10 rue Vauquelin, F-75005 Paris, France.); Hourdet D ( ESPCI ParisTech/Sorbonne Universités, UPMC Univ Paris 06/CNRS UMR 7615, SIMM, 10 rue Vauquelin, F-75005 Paris, France.); Creton C ( ESPCI ParisTech/Sorbonne Universités, UPMC Univ Paris 06/CNRS UMR 7615, SIMM, 10 rue Vauquelin, F-75005 Paris, France.); Badiger MV ( Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India. Electronic address: mv.badiger@ncl.res.in.) |
| Abstract | New thermo associating polymers were designed and synthesized by grafting amino terminated poly(ethylene oxide-co-propylene oxide) (PEPO) onto carboxymethyl guar (CMG) and carboxymethyl tamarind (CMT). The grafting was performed by coupling reaction between NH2 groups of PEPO and COOH groups of CMG and CMT using water-soluble EDC/NHS as coupling agents. The grafting efficiency and the temperature of thermo-association, T(assoc) in the copolymer were studied by NMR spectroscopy. The graft copolymers, CMG-g-PEPO and CMT-g-PEPO exhibited interesting thermo-associating behavior which was evidenced by the detailed rheological and fluorescence measurements. The visco-elastic properties (storage modulus, G'; loss modulus, G') of the copolymer solutions were investigated using oscillatory shear experiments. The influence of salt and surfactant on the T(assoc) was also studied by rheology, where the phenomenon of 'Salting out' and 'Salting in' was observed for salt and surfactant, respectively, which can give an easy access to tunable properties of these copolymers. These thermo-associating polymers with biodegradable nature of CMG and CMT can have potential applications as smart injectables in controlled release technology and as thickeners in cosmetics and pharmaceutical formulations. |
| File Format | HTM / HTML |
| ISSN | 01448617 |
| Journal | Carbohydrate Polymers |
| Volume Number | 117 |
| e-ISSN | 18791344 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-03-06 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry__semicolon__materials Discipline Science Plant Gums Chemistry Poloxamer Polymerization Elasticity Analogs & Derivatives Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Materials Chemistry Polymers and Plastics |
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