Poly(vinyl alcohol)–collagen hydrolysate thermoplastic blends: II. Water penetration and biodegradability of melt extruded films

Alexy, Pavol; Bakoš, Dušan; Crkoňová, Gabriela; Kramárová, Z.; Hoffmann, Jaromír; Julinová, Markéta; Chiellini, Emo; Cinelli, Patrizia

doi:10.1016/s0142-9418(03)00015-1

Cited by 39 publications

(16 citation statements)

References 25 publications

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“…PH proved surprisingly suitable for improving the technological and usage properties of PVA [21]. Blends containing starch [13] exhibited an increased biodegradation rate of PVA due to the presence of the enzyme a-amylase arising whilst S itself degraded.…”

Section: Resultsmentioning

confidence: 99%

“…Alexy et al [21,22], prepared blends of various PH and PVA contents, the plasticiser utilised being G. Their attention focused on usage and technological properties, though principally on water solubility and water penetration. Despite the high content and wide concentration range of protein hydrolysate in a blend, all blends were able to be processed and provided very high quality films (assessed through melt flow index e MFI, thermogravimetric analysis and torque).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lignin and starch as potential inductors for biodegradation of films based on poly(vinyl alcohol) and protein hydrolysate

Julinová

Kupec

Alexy

et al. 2010

Polymer Degradation and Stability

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lignin and starch as potential inductors for biodegradation of films based on poly(vinyl alcohol) and protein hydrolysate

Julinová

Kupec

Alexy

et al. 2010

Polymer Degradation and Stability

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“…Thus, the advanced processing of the leather manufacturing solid wastes leads to the obtaining of proteinbased materials that can be used for new building materials (concrete, thermal insulation panels and noise absorption panels (Sathish Kumar et al, 2015, UNIDO, 2000Mafia et al, 2002), as biofertilizers to improve the soil quality (Zainescu et al, 2012), as additions for pigment pastes to obtain finishing films (Popa et al, 2016), composts (Sundar et al, 2011), biodegradable bioplastic composite materials (Deselnicu et al, 2014;Alexy et al, 2003), dyes adsorbents (Carpenter et al, 2013) or the production of biodiesel biofuel (Kolomaznik et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Studies on the Acid Hydrolysis of Chamois Leather Wastes

Popa¹,

Mindru²,

Pruneanu³

et al. 2016

The International Conference on Advanced Materials and Systems

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The present paper aims to investigate a hydrolytic method, feasible to be applied at industrial level, to turn into useful products the Chamois leather wastes, mainly the buffing dust. The efficacy of acid treatments with 0.3, 0.5 and 1.0 % HCl solutions, by autoclaving at 105 °C, for reaction times of 6, 10 and 14 hours, was determined in an attempt to optimize the hydrolysis parameters. Based on the mass balance of performed experiments, the yields of hydrolysis processes were calculated for two of the products that were separated from the final mixture: collagen hydrolysates and fats. Optimal working parameters were: a concentration of 0.5 % HCl, and a duration of 10 hours, by simply boiling in autoclave, at 105 °C. The resulted polypeptides mixture was characterized by chemical (total nitrogen content) and physical-chemical methods (FTIR spectra, EDAX). The recovered greasy matters were purified by water-solvent partition, and the specific physical-chemical indicators were determined. The main advantage of the polypeptide mixtures obtained by Chamois wastes hydrolysis consists in the fact that they are chromium-free, and can be used for a large range of industrial (foaming agents, waste water treatment, chemical auxiliaries, fillers, adhesives, blends with synthetic polymers, concrete mixtures etc.) and agricultural applications (nitrogen and sulfur slow release fertilizers, animal feeding). The grease fraction can be used in leather wet finishing, or can be further chemically modified to produce surfactants. The small amounts of solid residues which resist to the acidic hydrolysis can be used, after neutralization, as additives of concrete mixtures, in producing decorative bricks.

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“…Collagen/PVA composites are already popular polymeric biomaterials [16,17]. Although DSC studies of collagen/PVA blends prove the immiscibility of the two polymers, their popularity as a biomaterial is attributed due to their very good film-forming properties [18].…”

Section: Introductionmentioning

confidence: 99%

Hydration dynamics of collagen/PVA composites: Thermoporometric and impedance analysis

Kanungo

Fathima

Rao

et al. 2013

Materials Chemistry and Physics

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Poly(vinyl alcohol)–collagen hydrolysate thermoplastic blends: II. Water penetration and biodegradability of melt extruded films

Cited by 39 publications

References 25 publications

Lignin and starch as potential inductors for biodegradation of films based on poly(vinyl alcohol) and protein hydrolysate

Lignin and starch as potential inductors for biodegradation of films based on poly(vinyl alcohol) and protein hydrolysate

Studies on the Acid Hydrolysis of Chamois Leather Wastes

Hydration dynamics of collagen/PVA composites: Thermoporometric and impedance analysis

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