Biodegradation of Poly(vinyl alcohol) and Bacterial Cellulose Composites by Aspergillus niger

Stoica-Guzun, Anicuţa; Jecu, Luiza; Gheorghe, A.; Răut, Iuliana; Stroescu, Marta; Ghiurea, Marius; Dănilă, M.; Jipa, Iuliana; Fruth, Victor

doi:10.1007/s10924-010-0257-1

Cited by 48 publications

(24 citation statements)

References 30 publications

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“…Lignin is utilized as a stabilizer for plastics and rubber. It is also used in the formulation of dispersants, surfactants, and adhesives or modifiers to improve the performance of the composite by blending it with other polymers (Pouteau et al 2004;Simionescu et al 1993;Stewart 2008;Stoica-Guzun et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Properties of Alkaline Lignin / Poly (Vinyl Alcohol) Blend Membranes

Ren

Wang

et al. 2013

BioResources

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Membranes were prepared from alkaline lignin and poly(vinyl alcohol) (PVA) by a film casting method, and their properties were evaluated. These blend membranes can aptly be termed as green by nature as they are totally non-toxic and eco-friendly. The optimal mass ratio was determined based on the mechanical properties of membranes. The microstructure, mechanical properties, oxygen and carbon dioxide transmission, light transmittance, and thermal stability of the membranes were investigated. The blend membrane exhibited better thermal stability and barrier performance to oxygen and carbon dioxide than a PVA membrane due to the incorporation of alkaline lignin. Both tensile strength and elongation at break were increased with increasing mass fraction of alkaline lignin up to 15%, at which point the maximum of tensile strength and elongation at break were 43.65 MPa and 211.6%, respectively. The blockage of visible light at 600 nm was 62.36%, which was an improvement of 314.90% compared with the PVA membrane (13.36%). Based on this result, we suggest that the mechanical properties of blend membrane containing 15% alkaline lignin are excellent and better than PVA membrane (40.26 MPa, 179.37%). Thus, an alkaline lignin/PVA blend membrane was judged to be potentially suitable as an eco-friendly packing material.

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Section: Introductionmentioning

confidence: 99%

Fabrication and Properties of Alkaline Lignin / Poly (Vinyl Alcohol) Blend Membranes

Ren

Wang

et al. 2013

BioResources

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“…However, because high moisture sensitivity was considered a drawback in the use of both BC and PVA, only a few applications in the food packaging industry were reported: as active packaging to control contamination on the surface of products (Nguyen, Gidley, & Dykes, 2008;Sin, Rahman, Rahmat, & Samad, 2010;Su et al, 2010;Zhang et al, 2011) or oxygen-scavenger films using aerobic microorganisms (Altieri et al, 2004). Recently, our research group showed that PVA-BC composites could be used as biodegradable packaging materials (Stoica-Guzun et al, 2011). Due to their characteristics this materials could be proper packaging for food with high fat content and low water activity, such as desiccated or roasted seeds or spices.…”

Section: Introductionmentioning

confidence: 99%

Controlled release of sorbic acid from bacterial cellulose based mono and multilayer antimicrobial films

Jipa

Stoica-Guzun

Stroescu

2012

LWT

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127

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“…2b) [37]. The band located at 1082 cm -1 can be assigned to stretching vibrations of C-O bonds and bending of -OH from PVA [38,39]. The bands located in 600-400 cm -1 region corresponds to M-O bonds vibrations.…”

Section: Resultsmentioning

confidence: 99%

Thermoanalytical techniques

Stoia

Păcurariu

Istratie

et al. 2016

J Therm Anal Calorim

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Thermal analysis and FTIR spectroscopy were used to investigate the formation and thermal decomposition of several manganese ferrite precursors, obtained in the interaction between a mixture of manganese(II) nitrate and iron(III) nitrate (molar ratio 1:2) and different polyols/ polyvinyl alcohol, 1,2-propanediol, and ethylene glycol, naked or embedded in silica gel. All prepared precursors consisted in mixture of Mn(II) and Fe(III) carboxylates, obtained through the polyol oxidation by nitrates ions. Similar manganese ferrite precursors were obtained in silica gel also. By the thermal decomposition of the naked precursors, manganese ferrite was obtained at 300 and 400°C, as fine nanoparticles, with diameters up to 15 nm. Above 400°C, the manganese ferrite has begun to decompose, due to the Mn(II) oxidation to Mn(III). At 700°C, only crystalline phases containing Mn(III) were evidenced in the XRD patterns. In case of the precursors embedded in silica gel, their thermal decomposition took place at higher temperatures. Manganese ferrite was partially stabilized by the silica matrix. Thus, manganese ferrite was present in silica matrix, even at 1000°C, with bixbyite (FeMnO 3 ) impurities. Pure manganese ferrite embedded in silica matrix was obtained in all cases, after annealing the powders obtained at 400°C, in argon atmosphere, at 1000°C. The magnetic behavior of the manganese ferrite/silica nanocomposites obtained at 1000°C in air and in argon was superparamagnetic, with maximum magnetization values of 25 emu g -1 .

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Biodegradation of Poly(vinyl alcohol) and Bacterial Cellulose Composites by Aspergillus niger

Cited by 48 publications

References 30 publications

Fabrication and Properties of Alkaline Lignin / Poly (Vinyl Alcohol) Blend Membranes

Fabrication and Properties of Alkaline Lignin / Poly (Vinyl Alcohol) Blend Membranes

Controlled release of sorbic acid from bacterial cellulose based mono and multilayer antimicrobial films

Thermoanalytical techniques

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