Variability between chitosan membrane surface characteristics as function of its composition and environmental conditions

Larena, A.; Cáceres, D.

doi:10.1016/j.apsusc.2004.05.175

Cited by 14 publications

(10 citation statements)

References 3 publications

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“…The effect of glycerol as plasticizer agent has been observed in other studies involving chitosan membranes (Larena & Cáceres, 2004). Among all the prepared formulations, those prepared with a ratio of 2:1 (CA) and 1:2 (CAQ)…”

Section: Figurementioning

confidence: 69%

Effect of crosslinking in chitosan/aloe vera-based membranes for biomedical applications

Silva

Caridade²,

Mano³

et al. 2013

Carbohydrate Polymers

107

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The positive interaction between polysaccharides with active phytochemicals found in medicinal plants may represent a strategy to create active wound dressing materials useful for skin repair. In the present work, blended membranes composed of chitosan (Cht) and aloe vera gel were prepared through the solvent casting, and were crosslinked with genipin to improve their properties. Topography, swelling, wettability, mechanical properties and in vitro cellular response of the membranes were investigated. With the incorporation of aloe vera gel into chitosan solution, the developed chitosan/aloe-based membranes displayed increased roughness and wettability; while the genipin crosslinking promoted the formation of stiffer membranes in comparison to those of the non-modified membranes. Moreover, in vitro cell culture studies evidenced that the L929 cells have high cell viability, confirmed by MTS test and calcein-AM staining. The findings suggested that both blend compositions and crosslinking affected the physico-chemical properties and cellular behavior of the developed membranes.

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Section: Figurementioning

confidence: 69%

Effect of crosslinking in chitosan/aloe vera-based membranes for biomedical applications

Silva

Caridade²,

Mano³

et al. 2013

Carbohydrate Polymers

107

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“…2 The transmittance values reported here are in good agreement with published transmittance data for chitosan substrates. 36 In all cases, the transmittance of CH films was not affected by the incorporation of 5% of BC nanofibrils. However, for BC contents equal to or higher than 10%, the transmittance decreased to 80% and 70%, respectively, for HCH/WSHCH and LCH composite films.…”

Section: Optical Propertiesmentioning

confidence: 83%

Novel transparent nanocomposite films based on chitosan and bacterial cellulose

et al. 2009

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New nanocomposite films based on different chitosan matrices (two chitosans with different DPs and one water soluble derivative) and bacterial cellulose were prepared by a fully green procedure by casting a water based suspension of chitosan and bacterial cellulose nanofibrils. The films were characterized by several techniques, namely SEM, AFM, X-ray diffraction, TGA, tensile assays and visible spectroscopy. They were highly transparent, flexible and displayed better mechanical properties than the corresponding unfilled chitosan films. These new renewable nanocomposite materials also presented reasonable thermal stability and low O 2 permeability.

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“…UV-Vis spectroscopy is employed to determine the physicochemical properties of chitin/chitosan-based compounds such as the turbidity (optical dispersion, OD) of their solutions [ 179 ], the capacity adsorption of chitosan membranes [ 204 ], the lower critical solution temperature (LCST) of a chitosan derivative copolymer solution in PBS [ 205 ] or the optical properties of nanoparticles [ 206 ].…”

Section: Application Of Spectroscopic Methods For Analyzing the Stmentioning

confidence: 99%

Application of Spectroscopic Methods for Structural Analysis of Chitin and Chitosan

et al. 2010

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Chitin, the second most important natural polymer in the world, and its N-deacetylated derivative chitosan, have been identified as versatile biopolymers for a broad range of applications in medicine, agriculture and the food industry. Two of the main reasons for this are firstly the unique chemical, physicochemical and biological properties of chitin and chitosan, and secondly the unlimited supply of raw materials for their production. These polymers exhibit widely differing physicochemical properties depending on the chitin source and the conditions of chitosan production. The presence of reactive functional groups as well as the polysaccharide nature of these biopolymers enables them to undergo diverse chemical modifications. A complete chemical and physicochemical characterization of chitin, chitosan and their derivatives is not possible without using spectroscopic techniques. This review focuses on the application of spectroscopic methods for the structural analysis of these compounds.

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Variability between chitosan membrane surface characteristics as function of its composition and environmental conditions

Cited by 14 publications

References 3 publications

Effect of crosslinking in chitosan/aloe vera-based membranes for biomedical applications

Effect of crosslinking in chitosan/aloe vera-based membranes for biomedical applications

Novel transparent nanocomposite films based on chitosan and bacterial cellulose

Application of Spectroscopic Methods for Structural Analysis of Chitin and Chitosan

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