Microwave synthesized chitosan-graft-poly(methylmethacrylate): An efficient Zn2+ ion binder

Singh, Vandana; Tripathi, Devendra Narayan; Tiwari, Ashutosh; Sanghi, Rashmi

doi:10.1016/j.carbpol.2005.12.002

Cited by 104 publications

(52 citation statements)

References 18 publications

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“…Recently, 20,21 microwave irradiation has been extended for use in the chemical modification of polysaccharides such as starch and chitosan. [22][23][24][25][26] In this paper, we report a novel guanidinylated chitosan derivative: chitosan biguanidine hydrochloride (Figure 1), which was prepared by chitiosan with dicyandiamide under microwave irradiation, expecting to improve its water solubility and antibacterial activity futher.…”

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confidence: 99%

Synthesis and Characterization of Chitosan Biguanidine Hydrochloride under Microwave Irradiation

Zhao

Yi-zhen³

2009

Polym. J.

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Chitosan biguanidine hydrochloride was synthesized by reacting chitosan with dicyandiamide under microwave irradiation. The influence of reaction temperature, reaction solvent and microwave heating time was studied, and optimal conditions were identified. The representative microwave synthesized chitosan biguanidine hydrochloride was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray diffraction measurement, taking chitosan as a reference. The solubility pH for the chitosan biguanidine hydrochloride with different substitution degrees was monitored. The antimicrobial activities of chitosan biguanidine hydrochloride were measured by means of the minimal inhibition concentration (MIC). In vitro antimicrobial activity of guanidinylated chitosans with different substitution degrees were evaluated against staphylococcus aureus, bacillus subtilis, escherichia coli and pseudomonas aeruginosa. The results show that the microwave irradiation method can increase the reaction rate by twelve times over the conventional method. Chitosan biguanidine hydrochloride are effective of bacteriostasis, compared with chitosan, guanidinylated chitosan had much better antibacterial activity. The antibacterial activity of chitosan biguanidine hydrochloride derivative enhanced with increasing substitution degrees of guanidinylated chitosan.

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confidence: 99%

Synthesis and Characterization of Chitosan Biguanidine Hydrochloride under Microwave Irradiation

Zhao

Yi-zhen³

2009

Polym. J.

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“…These polysaccharides being cost effective, biodegradable and quite efficient towards various technological processes, provides a better option for the artificial synthetic materials. Lot of work has been carried-out on various polysaccharides such as starch [1], cellulose [2], chitosan [3], dextrin [4], guar-gum [5], psyllium [6] and many more. The end products obtained were found to be the quality products as they were efficiently used in different technological processes viz.…”

Section: Introductionmentioning

confidence: 99%

In air synthesis of Psy-cl-poly(AAm) network and its application in water-absorption from oil-water emulsions

Kaith¹,

Kumar²

2007

Express Polym. Lett.

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Abstract. In this current investigation psyllium has been functionalized with acrylamide in the presence of potassium persulphate (KPS)-hexamethylene tetramine (HMTA) as an initiator-crosslinker system. After the initial optimization of different reaction parameters the resultant hydrogel was used for the absorption of water from different water-oil emulsions as a function of time, temperature, pH and NaCl concentration. 4216% of water absorption with 4.279·10 -2 mol·l -1 HMTA concentration has been observed.

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“…Natural fibers such as ramie, flax, jute and pine needle have been widely studied by various researchers because of their relatively high strength and stiffness and for their application in industries such as automobile, packaging and construction materials that fulfill the economic and ecological requirements [1][2][3][4] . Cellulose, starch, chitosan, guar-gum and psylium have been modified for their use in metal ion-sorption, drug delivery and water absorption studies [5][6][7][8][9][10] . Cellulosic fiber possesses both crystalline and amorphous regions.…”

Section: Introductionmentioning

confidence: 99%

Versatile Roselle Graft-Copolymers: XRD Studies and Their Mechanical Evaluation After Use as Reinforcement in Composites

Chauhana

Kaith

2012

J. Chil. Chem. Soc.

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Roselle is rich in cellulose content and exists as waste bio-mass in abundance thorough-out the world. It has low weight and high tensile strength that promotes its use as backbone for graft copolymerization. Various reaction parameters for the graft co-polymerization of effective acrylate monomer onto stem fiber were optimized and used in binary mixture with six vinyl monomers to screen the change in properties of the fiber. These graft copolymers were characterized by advanced analytical techniques and evaluated for mechanical strength after being incorporated in polymer matrix based composite as reinforcement.

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Microwave synthesized chitosan-graft-poly(methylmethacrylate): An efficient Zn2+ ion binder

Cited by 104 publications

References 18 publications

Synthesis and Characterization of Chitosan Biguanidine Hydrochloride under Microwave Irradiation

Synthesis and Characterization of Chitosan Biguanidine Hydrochloride under Microwave Irradiation

In air synthesis of Psy-cl-poly(AAm) network and its application in water-absorption from oil-water emulsions

Versatile Roselle Graft-Copolymers: XRD Studies and Their Mechanical Evaluation After Use as Reinforcement in Composites

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