Moisture Sorption Characteristics of Chitosan/Polyethylene Oxide Blended Films

Jagadish, R. S.; Rastogi, N. K.; Raj, Baldev

doi:10.1007/s10924-010-0181-4

Cited by 6 publications

(4 citation statements)

References 29 publications

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“…Relevant work has been carried out on sorption isotherms characteristics of foodstuffs (Mir and Nath 1995;Ayranci 1995;Myhara et al 1998;Tsami et al 1999;Ahouannou et al 2000;Talla et al 2001;Lahsani et al 2003;Talla et al 2005;Kaur et al 2006;Yazdani et al 2006;Vishwakarma et al 2007;Jain et al 2010;Jagadish et al 2010;Chenlo et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of sorption isotherms of cassava (Manihot esculenta)

et al. 2012

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Sorption isotherms of cassava were determined experimentally using a static gravimetric method at 30, 45 and 60°C and within the range of 0.10-0.90 water activity. At a constant water activity, equilibrium moisture content decreased with increasing temperature. The equilibrium moisture content increased with increasing water activity at a given temperature. The experimental results were modelled using seven sorption models using non-linear regression technique. Results demonstrated that the GAB model adequately predicted equilibrium moisture content of cassava for the range of temperatures and water activities studied. The thermodynamic functions such as net isosteric heat of sorption, differential entropy of sorption, net integral enthalpy and entropy were evaluated to provide an understanding of the properties of water and energy requirements associated with the sorption behaviour. Net isosteric heat and differential entropy decreased with increasing equilibrium moisture content. The net integral enthalpy decreased while net integral entropy increased with increasing equilibrium moisture content. Net integral entropy was negative in value. All thermodynamic functions were adequately characterised by a power law model. The point of maximum stability was found between 0.053 and 0.154 kg water/kg db for cassava.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of sorption isotherms of cassava (Manihot esculenta)

et al. 2012

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“…13 Among these, poly-ethylene oxide (PEO), a synthetic polymer with a molecular formula of (-CH 2 CH 2 O-) n , has emerged as a promising candidate because of its lowtoxicity, bioadhesive and mucoadhesive properties as well as a high hydrophilicity. [14][15][16][17][18] In particular, pure PEO has been used extensively in drug release and tissue engineering applications. 19 Despite these advantages, pure PEO lms demonstrated relatively weak mechanical properties, and the high water solubility limits their range of application.…”

Section: Introductionmentioning

confidence: 99%

“…wound healing and tissue engineering) are electrospinning and solvent casting. [16][17][18]20,21 The former permits to draw ultra-ne bers and weave them into micro-and nano-brous structures with an interconnected porosity in the sub-micron and micron scales. Because of these distinctive advantages, electrospinning has been mostly applied to engender biotextile structures and unwoven webs, such as 3-dimensional scaffolds and meshes to support cell growth, among others.…”

Section: Introductionmentioning

confidence: 99%

“…14 However, when blended with CH, its overall properties, such as water stability, moisture sorption, elongation at break and tensile strength are enhanced. [14][15][16] CH:PEO blends are thus expected to overcome the limitations of the individual components by synergistically conjugating their properties (e.g. controlled drug elution and physicochemical stability), ultimately resulting in a polymeric material with new capacities and improved performance.…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical and nanomechanical investigation of electrodeposited chitosan:PEO blends

et al. 2015

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Cathodic electrodeposition is a bottom up process that is emerging as a simple yet efficient strategy to engineer thin polymeric films with well-defined physicochemical properties. In particular, this technique offers the distinctive advantage of an easy control over composition, thickness, and morphology of the films by simply adjusting treatment parameters. In this work, cathodic electrodeposition was exploited to engender blends composed by chitosan (CH) and poly-ethylene-oxide (PEO) with different weight ratios. The physicochemical and nanomechanical properties of the resulting films were successively characterized by integrating Raman and Fourier-transform infrared (FT-IR) spectroscopy with Atomic Force Microscopy (AFM). Our findings demonstrate that electro-deposition is an effective technique for the co-deposition of CH:PEO blends. Moreover, spectroscopic and AFM analyses correlated the physicochemical (i.e. structural organization, bond formation and cross-linking) and nanomechanical properties of the blends to the PEO content, ultimately unveiling the molecular interactions and mechanisms involved in the cathodic deposition of CH:PEO film

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Water Sorption and Solvent Sorption Behavior

Sabzi

2014

Characterization of Polymer Blends

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Moisture Sorption Characteristics of Chitosan/Polyethylene Oxide Blended Films

Cited by 6 publications

References 29 publications

Thermodynamic analysis of sorption isotherms of cassava (Manihot esculenta)

Thermodynamic analysis of sorption isotherms of cassava (Manihot esculenta)

Physicochemical and nanomechanical investigation of electrodeposited chitosan:PEO blends

Water Sorption and Solvent Sorption Behavior

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