Improvement of proton conductivity in nanocomposite polyvinyl alcohol (PVA)/chitosan (CS) blend membranes

Palani, P. Bahavan; Abidin, Kurniati; Kannan, R.; Sivakumar, M.; Wang, Fuming; Rajashabala, S.; Velraj, G.

doi:10.1039/c4ra10788h

Cited by 40 publications

(12 citation statements)

References 36 publications

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“…The composite mechanical properties and thermal stability have been shown to increase with chitosan oligosaccharide and montmorillonite contents [58]. XRD results confirmed that these improvements were related to the MMT exfoliation and strong interaction between the PVA/chitosan blend and MMT [58,[60][61][62].…”

Section: Introductionmentioning

confidence: 64%

“…These results revealed that chitosan is miscible in PVA for weight fractions of chitosan w Ch >0.2 [53]. Characterization of films made of chitosan with poly(vinyl alcohol) and montmorillonite has been reported [58][59][60][61][62]. The composite mechanical properties and thermal stability have been shown to increase with chitosan oligosaccharide and montmorillonite contents [58].…”

Section: Introductionmentioning

confidence: 90%

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Characterization of chitosan composites with synthetic polymers and inorganic additives

Lewandowska

2015

International Journal of Biological Macromolecules

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Section: Introductionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 90%

Characterization of chitosan composites with synthetic polymers and inorganic additives

Lewandowska

2015

International Journal of Biological Macromolecules

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“…Typically, the XRD pattern of the CPA 0.5 had diffraction peaks at approximately 38.2 ∘ and 44.2 ∘ , corresponding to the crystalline structure (111) and planes (200), respectively, of the standard Ag cubic phases [34,35]. The peak at approximately 20.9 ∘ indicated the crystalline structure of CP [36]. The peaks at approximately 18 ∘ , 27 ∘ , 28 ∘ , and 31 ∘ indicated the diffraction peaks of CPA 0.5 after irradiation.…”

Section: Characterization Of Cs/pva-agnps Hydrogelsmentioning

confidence: 99%

Microwave-Assisted Synthesis of Chitosan/Polyvinyl Alcohol Silver Nanoparticles Gel for Wound Dressing Applications

Hiệp

Huynh

Niem

et al. 2016

International Journal of Polymer Science

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The purpose of this study was to fabricate chitosan/poly(vinyl alcohol)/Ag nanoparticles (CPA) gels with microwave-assistance for skin applications. Microwave irradiation was employed to reduce silver ions to silver nanoparticles and to crosslink chitosan (CS) with polyvinyl alcohol (PVA). The presence of silver nanoparticles in CPA gels matrix was examined using UV-Vis spectroscopy, transmission electron microscopy, and X-ray diffraction. The interaction of CS and PVA was analysed by Fourier transform infrared spectroscopy. The release of silver ions was determined by atomic absorption spectrometry. The antimicrobial properties of CPA gels againstP. aeruginosaandS. aureuswere investigated using agar diffusion method. Finally, the biocompatibility and wound-healing ability of the gels were studied using fibroblast cells (in vitro) and mice models (in vivo). In conclusion, the results showed that CPA gels were successfully fabricated using microwave irradiation method. These gels can be applied to heal an open wound thanks to their antibacterial activity and biocompatibility.

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“…Sulfonation of chitosan enhanced its proton conductivity due to the addition of sulfonic acid groups. Poly vinyl alcohol (PVA) is a water soluble polymer and have good film forming property, used as the plasticiser for membrane applications [12][13][14][15]. Interaction between PVA and GO is due to the hydrogen bonds that may remarkably improve its properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of highly stable and high water retentive functionalized biopolymer-graphene oxide modified cation exchange membranes

Sharma

Kulshrestha

2015

RSC Adv.

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Utility of Polymer electrolyte membrane in energy based devices is substituting the conventional electrolyte. Herein, we have synthesized PEM based biopolymer, functionalized silica modified GO and PVA. GO is modified in two steps to synthesize silica grafted sulfonated GO.Functionalization of chitosan is done using 1,3 propane sultone after deacetylation. Further, PVA has been used as a polymer matrix since PVA possess good film forming property with mechanical stability. Different weight % (1, 2 and 5) of modified GO has been incorporated in the chitosan matrix. Prepared PEMs are subjected to different characterization such as structural, thermal, mechanical and electrochemical etc. The nano-hybrid membranes shows the significant increment in electrochemical properties. MGO-SCH-5 membrane shows the proton conductivity as 6.77 ×10 −2 S cm -1 which goes to increases upto 11.2×10 −2 S cm -1 at 90 0 C. Thermal and mechanical stability of PEM also gets increases with the MGO content in to sulfonated chitosan.The elastic modulus for MGO-SCH-5 membrane is calculated to 21.37 MPa with 54 MPa of maximum stress. Thus membranes may be targeted as PEM for higher temperature energy application. IntroductionPolymer electrolyte membranes (PEM) are playing a vital role in energy based devices, and replacing liquid electrolyte in fuel cells and batteries due to their ease of handling and excellent physico-chemical as well as mechanical properties etc. [1][2][3][4]. Composite membranes are the subject of intense research as well as are ideal work of art due to its excellent properties [5][6]. To date, various kind of fillers have been incorporated into polymer matrix to enhance the membrane performance for different applications [7][8][9][10]. Different type carbon based materials such as carbon quantum dots, graphene oxide, C 60 and carbon nanotube have been incorporated within the polymeric membranes and they have displayed significant enhancement in the membrane performance. Different types of oxides and conducting polymers have also been incorporated into the PEM to enhance its applicability and stability [11][12]. An ideal PEM must have high ionic conductivity, high thermal, mechanical stability and high methanol crossover resistance to be employed as solid electrolyte for fuel cell application. Fascinating properties of Graphene oxide (GO) makes it a material of interest and in past few years research on GO is rising and it can be estimated by the increasing number of publications [6]. Applicability of GO has been realized for many applications and many other are yet to be explored [13]. Use of GO in polymer electrolyte membrane has been done in our previous work [7]. Further, GO has also been modified with different metals, metal oxides etc. by many researchers [8]. Modification of GO with silica is an effective strategy to increase the stability of material, since silica is a low cost and abundant material. GO-silica composite has been prepared by Zhang et. Al. for electroreponsive characteristics [9]. High ionic conduct...

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Improvement of proton conductivity in nanocomposite polyvinyl alcohol (PVA)/chitosan (CS) blend membranes

Cited by 40 publications

References 36 publications

Characterization of chitosan composites with synthetic polymers and inorganic additives

Characterization of chitosan composites with synthetic polymers and inorganic additives

Microwave-Assisted Synthesis of Chitosan/Polyvinyl Alcohol Silver Nanoparticles Gel for Wound Dressing Applications

Synthesis of highly stable and high water retentive functionalized biopolymer-graphene oxide modified cation exchange membranes

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