Polymers from renewable resources. II. A study in the radio chemical grafting of poly(styrene-alt-maleic anhydride) onto cellulose extracted from pine needles

Chauhan, Ghanshyam S.; Guleria, Lalit K.; Misra, Β. N.; Kaur, Inderjeet

doi:10.1002/(sici)1099-0518(19990615)37:12<1763::aid-pola5>3.0.co;2-s

Cited by 34 publications

(15 citation statements)

References 24 publications

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“…We have earlier reported grafting of monomers from binary monomer systems onto this cellulosic backbone (Chauhan et al 1999(Chauhan et al , 2002a(Chauhan et al , b, 2003. In the present study, it is expected that an epoxy group on an ester moiety may open up during grafting resulting in crosslinking, which in turn should affect the properties of the cellulose in a significant manner.…”

Section: Resultsmentioning

confidence: 99%

“…From the absorbance ratio, it is revealed that the ratios of cellulose/GMA and GMA/CM decrease almost linearly with the increase in P g in case of cell-g-poly(GMA-co-AAm) (Chauhan et al 1999. Similarly, the ratio of absorbances has been studied for the stretching frequency of >C¼O of GMA to that of the characteristic group of comonomers (%1735 cm À1 /A cm À1 , where A % 1670, 1730, 2240 cm À1 ), respectively, for >C¼O of AAm and AAc and C"N of AN).…”

Section: Ftir Spectra Of Graft Copolymersmentioning

confidence: 96%

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Synthesis, characterization and metal ion sorption studies of graft copolymers of cellulose with glycidyl methacrylate and some comonomers

2005

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To develop low-cost and environmentally friendly polymeric materials for enrichment, separation and remediation of metal ions from water, novel reactive graft copolymers based on cellulose extracted from pine needles were synthesized by grafting of poly(glycidyl methacrylate) alone and with comonomers acrylic acid, acrylamide and acrylonitrile by benzoyl peroxide initiation. Structural aspects of graft copolymers have been characterized by elemental analysis, FTIR, and solvent uptake behaviour. An attempt has been made to study sorption of Fe 2+ , Cu 2+ and Cr 6+ ions on candidate graft copolymers by an equilibration method and to investigate the structural aspects of graft copolymers and establish a relationship between the structural aspects of graft copolymers and metal ion uptake efficiency and selectivity.Cellulose 12: 97-110, 2005.

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Section: Resultsmentioning

confidence: 99%

Section: Ftir Spectra Of Graft Copolymersmentioning

confidence: 96%

Synthesis, characterization and metal ion sorption studies of graft copolymers of cellulose with glycidyl methacrylate and some comonomers

2005

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“…Dengre et al4 have used hydrogels of poly( N ‐VP‐ cl ‐AAm) crosslinked for the release of vitamin B 12 . We have prepared a large variety of functional polymers for water technologies by radiation grafting of a single monomer or cografting of two monomers onto cellulosics from the binary monomer mixtures 5–7. Some of the copolymers and networks prepared from the cellulosics and functionalized with various acrylamides were used for the metal ion sorption 8–10.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of N‐vinyl pyrrolidone and cellulosics based functional graft copolymers for use as metal ions and iodine sorbents

Chauhan

Singh

Kumar

2005

J of Applied Polymer Sci

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ABSTRACT:To develop cost effective and eco friendly polymeric materials for enrichment and separation technologies, 1-vinyl-2-pyrrolidone (N-VP) was graft copolymerized onto cellulose, extracted from pine needles. Optimum conditions have been evaluated for the grafting of N-VP onto cellulose and at these conditions it was also grafted onto cellulose phosphate, hydroxypropyl cellulose, cyanoethyl cellulose, and deoxyhydrazino cellulose. At the optimum grafting conditions for N-VP, it was also cografted with maleic anhydride. Kinetics of radiochemical graft copolymerization has been studied and evaluation of the polymerization and grafting parameters as percent grafting, percent grafting efficiency, rate of polymerization, homopolymerization, and graft copolymerization have been evaluated. Graft copolymers have been characterized by elemental analysis, FTIR, and swelling studies. An attempt has been made to study sorption of some metal ions such as Fe 2ϩ and Cu 2ϩ and iodine on select graft copolymers to investigate selectivity in metal ion sorption and iodine sorption as a function of structural aspects of the functionalized graft copolymers to find their end uses in separation and enrichment technologies.

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“…Many recent studies have been devoted to the preparation, modification, and application of cellulose and its derivatives. They have dealt with the biosynthesis and characterization of cellulose,1 preparation of its esters,2, 3 grafting of polymers onto cellulose and their subsequent derivatives,4, 5 and so on. The preparation of oxidized cellulose (OC) containing carboxyl groups is of special interest because it has several useful medical applications and is among the most widespread hemostatics, being used in almost all types of surgery 6.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of oxidized cellulose

Zimnitsky

Yurkshtovich

Bychkovsky

2004

J. Polym. Sci. A Polym. Chem.

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Samples of oxidized cellulose (OC) with various carboxyl contents and degrees of crystallinity were obtained by the oxidation of native and mercerized cellulose with a solution of nitrogen(IV) oxide in CCl4. A detailed characterization of these OC samples was performed. The effect of oxidation conditions (concentration of N2O4 in the solution and oxidation time) and starting cellulose material on OC characteristics (carboxyl, carbonyl and nitrogen content, degree of crystallinity and polymerization, surface area and swelling, and acidic properties) was investigated. Reactivity in the oxidation process was higher in mercerized cellulose than in native cellulose. The action of dilute solutions (10–15%) of N2O4 did not affect the degree of crystallinity of cellulose samples. Under these conditions, the oxidation took place mainly in amorphous regions and on the surface of crystallites. Oxidation in a concentrated (40%) N2O4 solution led to the destruction of crystallites, which increased the surface area and swelling of cellulose in water. The surface area and the swelling of OC samples increased with a decrease in the index of crystallinity. The acidic properties of OC were shown to increase with an increase of swelling in water. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 4785–4791, 2004

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Polymers from renewable resources. II. A study in the radio chemical grafting of poly(styrene-alt-maleic anhydride) onto cellulose extracted from pine needles

Cited by 34 publications

References 24 publications

Synthesis, characterization and metal ion sorption studies of graft copolymers of cellulose with glycidyl methacrylate and some comonomers

Synthesis, characterization and metal ion sorption studies of graft copolymers of cellulose with glycidyl methacrylate and some comonomers

Synthesis and characterization of N‐vinyl pyrrolidone and cellulosics based functional graft copolymers for use as metal ions and iodine sorbents

Synthesis and characterization of oxidized cellulose

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