Graft Copolymerization onto Chitosan V: Grafting Ethyl Acrylate onto Chitosan Initiated By Ceric Ion and Its Anti Microbial Activity

Pati, Manoj Kumar

doi:10.9790/5736-0140108

Cited by 7 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most commonly, graft polymerization is brought about by free radical addition polymerization. The sequence of the steps with CAN (ceric ammonium nitrate) as initiator is begun by the formation of Ce 4+ radical reacts with starch and chitosan to form a starch radical or chitosan radical in oxidation ( 6 ) as reported in [ 27 ]. The subsequent reaction with methacrylic acid results in the formation of polymethacrylic acid grafts on the starch ( 7 ) and ( 9 ) and chitosan backbone in initiation and propagation steps.…”

Section: Resultsmentioning

confidence: 99%

Some Properties of Chemical Cross-Linking Biohydrogel from Starch and Chitosan

Sunarti

Febrian

Ruriani

et al. 2019

International Journal of Biomaterials

View full text Add to dashboard Cite

Chemical cross-linking was developed to prepare starch and chitosan-based hydrogels. First, the precursor of starch was synthesized through the reaction of carboxymethylation with sodium monochloroacetate, and then chitosan was grafted by using methacrylic acid as cross-linker. In this research, sago and cassava starches were used and mixed with chitosan, and the effect of methacrylic acid concentration was investigated to determine the grafting parameters and hydrogel characteristics. Compared to native starch and carboxymethylated starch, hydrogels from both starches have high ability to swell and high capacity to absorb water and oil. The highest grafting yield, grafting efficiency, and monomer conversion were achieved by experiment using 0.550 g of methacrylic acid per g of CMS-chitosan mixture. These hydrogels have a good potency as biodegradable absorbents for pharmaceutical and industrial application.

show abstract

Section: Resultsmentioning

confidence: 99%

Some Properties of Chemical Cross-Linking Biohydrogel from Starch and Chitosan

Sunarti

Febrian

Ruriani

et al. 2019

International Journal of Biomaterials

View full text Add to dashboard Cite

show abstract

“…The powerful reactive basic amino groups that can be employed as a center graft to attach diverse chemicals to the chitosan backbone are what give the substance its distinctive chemical structure [37,38]. FT-IR measurements were carried out to track the impact of chemical alterations to the chitosan structure upon interaction with grafted succinic acid.…”

Section: Ftir Characterization Of Chemically Modified Chitosan Filmmentioning

confidence: 99%

Chemically Plasticized Chitosan Films by Grafting Succinic Acid: Surface Roughness and Mechanical Properties

S.¹

2022

Int. J. Membrane Sci. Techno.

View full text Add to dashboard Cite

A useful alternative to conventional plastic packaging manufactured from fossil fuels is packaging constructed of a biodegradable polymer. The final qualities of the chitosan cast films heavily depend on the type of plasticizer used and how it is incorporated into the chitosan-based material. This work investigates the synthesis of chitosan chemically grafted with succinic acid to improve the physical and mechanical properties of the film. The cortex of local shrimp was used to make a chitosan extract with a molecular weight of 2.702x105 g/mole and a deacetylation level of 80%. The chemically plasticized chitosan film was characterized by FTIR. It was found that chitosan and grafted chitosan film spectra were different from each other, implying the true grafting of succinic acid had occurred and the main backbone of the chitosan structure was unaffected. An examination of the mechanical properties of the films revealed that the results of the tensile strength measurement showed an improvement in the strength and %elongation at break for the chitosan grafted with succinic acid cast film for packaging, which is one of the potential applications for biodegradable chitosan.

show abstract

“…Where, chitosan presents two types of reactive sites which can be modified by grafting the C-2 (free amino groups) on deacetylated units and the C-3 and C-6 (hydroxyl groups) in either acetylated or deacetylated units [29]. Much works have been carried out to perform grafting copolymerization of chitosan and vinyl acrylate monomers such as acrylic acid, methyl methacrylate, acrylamide, and other acrylate monomer derivatives [30][31][32][33][34][35]. The resultant graft copolymers normally have the main properties of both initial components.…”

Section: Int J Adv Res 4(11) 2080-2094mentioning

confidence: 99%