IPNs based on chitosan with NVP and NVP/HEMA synthesised through photoinitiator-free photopolymerisation technique for biomedical applications

Ng, Loo‐Teck; Swami, Salesh N

doi:10.1016/j.carbpol.2005.03.009

Cited by 52 publications

(18 citation statements)

References 10 publications

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“…The presence of the characteristic absorption band at 1645 cm -1 due to the N-H bending suggests that the primary amine group of chitosan was involved in the reaction. Furthermore, the appearance of additional bands at 733, 902 and 1219 cm -1 assignable to N-H wag, C-N bond and saccharide structure of chitosan, respectively [33], affirms that CTS-g-ENR-P1 was produced likely via the acid-induced attack of the primary amine of the former on the epoxide ring of the latter. 1 H-NMR spectra of (i) ENR50-control and (ii) CTS-g-ENR-P1…”

mentioning

confidence: 53%

Preparation and characterization of biopolymers comprising chitosan-grafted-ENR via acid-induced reaction of ENR50 with chitosan

Haris¹,

Raju²

2014

Express Polym. Lett.

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This paper describes the first detailed tailored-approach for the preparation of biopolymers comprising chitosan (CTS) grafted onto the backbone of epoxidized natural rubber (CTS-g-ENR). In a typical experiment, appropriate amount of CTS and AlCl3•6H2O was added to a specified amount of ENR50 (ENR with about 50% epoxy content) dissolved in a dual-solvent consisting of 1,4-dioxane and water (97.5:2.5% v/v) and the resulting mixture refluxed with continuous stirring for 6 hours. Nuclear magnetic resonance (NMR) spectral analysis of a biocomposite, CTS-g-ENR-P1, revealed that its epoxy content is 22.36% which is considerably lower than 44.93% as determined for ENR50-control (ENR50 derivative obtained under similar experimental condition but in the absence of CTS). This means that the grafting of CTS onto the backbone of ENR had occurred. The revelation is affirmed by the presence of the characteristic absorption bands of CTS and ENR, and the appearance of new bands at 1219, 902 and 733 cm–1 in the Fourier transform infrared (FTIR) spectrum of CTS-g-ENR-P1. Further evidence that CTS had been successfully grafted onto the backbone of ENR can be deduced and described in this paper from the data obtained by means of Differential Scanning Calorimetric analysis, Thermogravimetric analysis and Variable Pressure Scanning Electron Microscopy

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mentioning

confidence: 53%

Preparation and characterization of biopolymers comprising chitosan-grafted-ENR via acid-induced reaction of ENR50 with chitosan

Haris¹,

Raju²

2014

Express Polym. Lett.

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“…Recently, the photopolymerized hydrogels based on chitosan or their derivatives were investigated extensively due to their special properties and thus potential applications [18][19][20][21]. However, during the preparation of these hydrogels, the aqueous acid was usually used to dissolve chitosan or chitosan derivatives, which inevitably led the presence of small quantity of residual acid, which was difficult to be removed due to the electrostatic force existed between -NH 3 + of chitosan and -COO − of aqueous acid.…”

Section: Introductionmentioning

confidence: 99%

Photopolymerized water-soluble chitosan-based hydrogel as potential use in tissue engineering

Zhou¹,

Shi

et al. 2011

International Journal of Biological Macromolecules

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“…Chitosan has found uses in waste-water processing [8,9], medicine for wound healing and dietetics [10,11], agriculture [12], reverse osmosis, food industry [13][14][15] and also in cosmetics [16][17][18]. In this article, emphasis is on chitosan and chitosan-derived materials as hosts for ionic conduction.…”

Section: General Characteristicsmentioning

confidence: 99%

Chitosan and Phthaloylated Chitosan in Electrochemical Devices

Osman¹,

Arof²

2017

Biological Activities and Application of Marine Polysaccharides

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Chitin and chitosan are widely found in nature. Chitin can be obtained from fungi and in the lower animals. Chitosan can be derived from chitin. The process of chitosan derivation from chitin is called deacetylation. Chitosan is non-toxic, odourless, biocompatible in animal tissues and enzymatically biodegradable. It has found many applications in the fields of cosmetics, wound healing, dietetics and waste-water treatment. Chitosan holds many promising potentials, but its inability to dissolve in many of the common solvents has restricted its application. Hence, chitosan has been modified, and there are now many derivatives of chitosan. In the current chapter, we discuss chitosan and only the phthaloyl chitosan derivative. Their applications in several electrochemical devices are also discussed.

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IPNs based on chitosan with NVP and NVP/HEMA synthesised through photoinitiator-free photopolymerisation technique for biomedical applications

Cited by 52 publications

References 10 publications

Preparation and characterization of biopolymers comprising chitosan-grafted-ENR via acid-induced reaction of ENR50 with chitosan

Preparation and characterization of biopolymers comprising chitosan-grafted-ENR via acid-induced reaction of ENR50 with chitosan

Photopolymerized water-soluble chitosan-based hydrogel as potential use in tissue engineering

Chitosan and Phthaloylated Chitosan in Electrochemical Devices

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