Xylan/polyvinyl alcohol blend and its performance as hydrogel

Tanodekaew, Siriporn; Channasanon, Somruethai; Uppanan, Paweena

doi:10.1002/app.22919

Cited by 37 publications

(19 citation statements)

References 21 publications

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“…Precipitation of xylan hemicelluloses into hydrogels, with varying morphological properties, can be achieved by physical, chemical and enzymatic methods (Chimphango, Rose, van Zyl, & Görgens, 2012;Haimer et al, 2010;Ren & Sun, 2010;Tanodekaew, Channasanon, & Uppanan, 2006). Hydrogels were obtained by selective removal of arabinose from extracted arabinoglucuronoxylans using the ␣-l-arabinofuranosidase enzyme from family GH54 (AbfB), produced by expression in Aspergillus niger (Chimphango et al, 2012a).…”

Section: Introductionmentioning

confidence: 99%

Modifying solubility of polymeric xylan extracted from Eucalyptus grandis and sugarcane bagasse by suitable side chain removing enzymes

Gomes

Chimphango

Görgens

2015

Carbohydrate Polymers

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Section: Introductionmentioning

confidence: 99%

Modifying solubility of polymeric xylan extracted from Eucalyptus grandis and sugarcane bagasse by suitable side chain removing enzymes

Gomes

Chimphango

Görgens

2015

Carbohydrate Polymers

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“…Among these synthetic polymers, cheap and non-toxic polyvinyl alcohol (PVOH) is of particular interest due to its excellent cross-linking and water soluble properties. Although attempts on xylan-PVOH hydrogel preparation have been reported (Tanodekaew et al 2006;Venugopal et al 2014), the bead formation capability and its application for laccase immobilization and dye decolorization have not been studied.…”

Section: Introductionmentioning

confidence: 99%

A Novel Xylan-Polyvinyl Alcohol Hydrogel Bead with Laccase Entrapment for Decolorization of Reactive Black 5

Bankeeree¹,

Prasongsuk²,

Imai³

et al. 2016

BioResources

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In an attempt to find a more efficient technique for biodegradation of the recalcitrant Reactive Black 5 (RB-5) dye, a composite xylan-polyvinyl alcohol (xylan-PVOH) hydrogel was used to immobilize laccase from the white-rot fungus Trametes versicolor. Xylan was prepared from the black liquor of pulp and paper effluent, and it was esterified with citric acid prior to cross-linking with polyvinyl alcohol (PVOH). The optimum composition for the immobilized laccase bead formation consisted of 4% (w/v) modified xylan, 10% (w/v) PVOH, and 15 U.mL -1 crude laccase. The maximum decolorization of RB-5 (98.45  1.96 %) was obtained within the first cycle (6 h) at 40 °C. In the eighth cycle, the reused beads were able to decolorize 55.35  2.46 % of the RB-5. Moreover, the xylan-PVOH beads extended the optimum pH range of laccase activity from 6 to 10 and tolerated a temperature up to 10 °C higher than that of the free enzyme. These results suggest that the xylan-PVOH bead has great potential as the polymer matrix for enzyme immobilization, which has applications in wastewater treatment.

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“…Research into xylans has recently focused on special applications like pharmaceutical , biomedical (especially as hydrogels) , food , and improvement of the pulps' characteristics in the pulp and paper industries . Some researchers have discussed films made from xylans, especially their mechanical, oxygen, and moisture barrier properties .…”

Section: Introductionmentioning

confidence: 99%

Influence of carboxymethylation on the surface physical–chemical properties of glucuronoxylan and arabinoxylan films

Velkova¹,

Doliška²,

Zemljič

et al. 2015

Polymer Engineering & Sci

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Xylans were carboxymethylated in order to increase their anionic nature and thus tune their surface free energy (SFE) and hydrophilicity, which are of crucial importance in the majority of special applications. Fourier transform infrared spectroscopy and polyelectrolyte titration results confirmed the successful carboxymethylation of the xylan samples. The main aim of this study was to investigate the influences of carboxymethylation of glucuronoxylan and arabinoxylans on the surface physical and chemical properties of the films made from them. Films were prepared by the casting method, and their surface morphologies were analyzed by atomic force microscopy. The surface chemical compositions of the films were investigated using X-ray photoelectron spectroscopy, and their influences on SFE, i.e., Lifshitz-van der Waals and electron donor and acceptor contributions, were determined using goniometry. The introduction of 2 mmol/g of carboxyl groups into the glucuronoxylan or arabinoxylan molecular structures had a significant influence on the chemical and physical surface properties of the prepared films. Higher amounts of the carboxyl group present on the films' surfaces and higher surface roughness contributed to a significant increase (by 270%) in the electron donor component of SFE and to 40% improvements in the hydrophilicities of the films' surfaces. POLYM. ENG. SCI., 55:2706-2713

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Xylan/polyvinyl alcohol blend and its performance as hydrogel

Cited by 37 publications

References 21 publications

Modifying solubility of polymeric xylan extracted from Eucalyptus grandis and sugarcane bagasse by suitable side chain removing enzymes

Modifying solubility of polymeric xylan extracted from Eucalyptus grandis and sugarcane bagasse by suitable side chain removing enzymes

A Novel Xylan-Polyvinyl Alcohol Hydrogel Bead with Laccase Entrapment for Decolorization of Reactive Black 5

Influence of carboxymethylation on the surface physical–chemical properties of glucuronoxylan and arabinoxylan films

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