Graft copolymerization of acrylic acid onto guar gum initiated by vanadium (V)–mercaptosuccinic acid redox pair

Pandey, Peeyoosh Kant; Srivastava, Arti; Tripathy, Jasaswini; Behari, Kunj

doi:10.1016/j.carbpol.2006.01.022

Cited by 60 publications

(33 citation statements)

References 6 publications

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“…Graft copolymerization of hydrophilic and hydrophobic vinyl monomers is a well-known technique employed by polymer chemists for significantly modifying the chemical and physical properties of the synthetic or natural starting materials with minimum degradation of the original properties [1][2][3][4][5][6][7] . Graft copolymers are prepared by first generating free radicals on the polysaccharide backbone and then allowing these radicals to serve as macroinitiators for the vinyl monomers.…”

Section: Introductionmentioning

confidence: 99%

Studies on Graft Copolymerization of 2-Hydroxyethylmethacrylate Onto Kappa-Carrageenan Initiated by Ceric Ammonium Nitrate

Sadeghi

Hosseinzadeh²

2010

J. Chil. Chem. Soc.

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The polysaccharide, kappa-carrageenan (kC), has been chemically modified by graft copolymerization of 2-hydroxyethylmethacrylate (HEMA) in an aqueous medium using ceric ammonium nitrate (CAN) as an initiator under argon atmosphere. A plausible reaction mechanism of grafting has been suggested. Evidence of grafting was obtained by comparison of FTIR spectra of kC and homopolymer-free kC-g-poly(HEMA) as well as solubility characteristics and gravimetric analysis of the products. The optimum reaction conditions affording maximum grafting ratio and add-on value have been determined. The grafting parameters have been found to increase with increasing in kC, CAN, and HEMA concentrations as well as polymerization time and temperature, up to a certain value, but these parameters decrease on further increasing in reaction conditions.

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Section: Introductionmentioning

confidence: 99%

Studies on Graft Copolymerization of 2-Hydroxyethylmethacrylate Onto Kappa-Carrageenan Initiated by Ceric Ammonium Nitrate

Sadeghi

Hosseinzadeh²

2010

J. Chil. Chem. Soc.

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“…The mixture was stirred gently at room temperature for 48 h. After complete removal of the homopolymer by filtration of the collagen-g-poly(AMPS), copolymer, the product was washed with methanol and dried in oven at 50 o C to reach a constant weight 13 .…”

Section: Homopolymer Extractionmentioning

confidence: 99%

“…Two efficient methods for preparation of aqueous soluble proteins are alkaline and enzymatic hydrolysis. According to the literature survey based on Chemical Abstract Service, a few studies have been reported in the case of graft copolymer based on protein [11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Optimization Effective Parameters on Gamma Radiation Polymerization Copolymer based on Collagen

Sadeghi¹,

Shafiei²,

Mohammadinasab³

2012

Orientjchem.

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In this work, after synthesis of graft copolymer collagen-based by gamma radiation, The effective parameters, for example, the Doses of initiator, monomer and protein as well as the reaction time on the graft copolymerization reactions were investigated to achieve the optimum grafting conditions. According to the empirical rates of the polymerization and the graft copolymerization of AMPS onto collagen backbone, the overall activation energy of the graft copolymerization reaction was estimated to be 29.8 kJ/mol.

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“…[91][92][93][94][95][96][97][98][99][100] The binary mixture of galactomannans with other biopolymers has also been studied, especially with xanthan 14,15,18,[101][102][103][104][105][106][107][108] that enables gel formation and potential drug entrapment, for the development of modified drug delivery systems.…”

Section: Galactomananns As a Component Of Hydrogelsmentioning

confidence: 99%

Pharmaceutical use of galactomannans

Silveira¹,

Bresolin²

2011

Quím. Nova

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Recebido em 5/1/10; aceito em 13/8/10; publicado na web em 26/11/10 PHARMACEUTICAL USE OF GALACTOMANNANS. The pharmaceutical use of galactomannans from different sources, commercial and noncommercial, has been extensively studied over the past decade. Galactomannans show potential in the global trend towards the use of more plant-based products for ecological motives, and their production and application do not cause pollution or disturb the ecosystem. There is a variety of galactomannan sources and various pharmaceutical forms of application, such as tablets or capsules, hydrogels and films. Besides the simple use as inert excipient this polysaccharides play role in the modification of drug release, especially in colonic environmental, as a matrix or coating material.

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Graft copolymerization of acrylic acid onto guar gum initiated by vanadium (V)–mercaptosuccinic acid redox pair

Cited by 60 publications

References 6 publications

Studies on Graft Copolymerization of 2-Hydroxyethylmethacrylate Onto Kappa-Carrageenan Initiated by Ceric Ammonium Nitrate

Studies on Graft Copolymerization of 2-Hydroxyethylmethacrylate Onto Kappa-Carrageenan Initiated by Ceric Ammonium Nitrate

Optimization Effective Parameters on Gamma Radiation Polymerization Copolymer based on Collagen

Pharmaceutical use of galactomannans

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