Enhancing water repellence and mechanical properties of gelatin films by tannin addition

Peña, C.; Caba, Koro de la; Eceiza, Arantxa; Ruseckaite, Roxana Alejandra; Mondragón, Iñaki

doi:10.1016/j.biortech.2010.03.112

Cited by 245 publications

(166 citation statements)

References 48 publications

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“…This result could be explained as follows. First, untreated gelatin and cross-linked gelatin, with excellent hydrophilicity and film-forming property, easily form a film on the fiber and floc surface, enhancing water retention (Peña et al 2010). Secondly, the film seals the pores of the fiber and floc to prevent dewatering of the area.…”

Section: Drainage Resultsmentioning

confidence: 99%

The Retention and Drainage Behavior of Cross-linked Gelatin with Glutaraldehyde in a Papermaking System

You¹,

Sun²,

Cui³

et al. 2016

BioResources

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A type of novel retention aid, cross-linked gelatin, was prepared using lowgrade industrial gelatin as the raw material and glutaraldehyde as the crosslinking agent. The structure of cross-linked gelatin was characterized according to the crosslinking degree, isoelectric point, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy. The results indicated that the crosslinking reaction was successfully performed between the primary amine group of gelatin and the aldehyde group of glutaraldehyde, resulting in the formation of a Schiff base structure. The retention test showed that the addition of cross-linked gelatin remarkably improved the retention of filler. This effect was mainly attributed to the fact that cross-linked gelatin, with a high molecular weight and highly branched structure, exhibited favorable bridging flocculation and induced filler aggregation into the flocs, which were retained in the paper sheet. The drainage test showed that the cross-linked gelatin exhibited a poor drainage effect, which was attributed to the synergic effects of excellent hydrophilicity, film forming property, and sealing property.

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Section: Drainage Resultsmentioning

confidence: 99%

The Retention and Drainage Behavior of Cross-linked Gelatin with Glutaraldehyde in a Papermaking System

You¹,

Sun²,

Cui³

et al. 2016

BioResources

View full text Add to dashboard Cite

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“…A broad endothermic peak was observed in the range of temperatures between 30 and 180 ºC, being associated with the evaporation of bound water that was previously absorbed by the polymer membrane when in contact with air. TGA experiments showed that almost 190 ºC an endothermic shoulder was observed, related to the helix-coil transition, i.e., the electrospinning process does not alter the formation of the characteristic helical structure between the gelatin chains [36].…”

Section: Hydrolytic Degradationmentioning

confidence: 99%

Thermal and hydrolytic degradation of electrospun fish gelatin membranes

et al. 2013

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The thermal and hydrolytic degradation of electrospun gelatin membranes cross-linked with glutaraldehyde in vapor phase has been studied. In vitro degradation of gelatin membranes was evaluated in phosphate buffer saline solution at 37 ºC. After 15 days under these conditions, a weight loss of 68 % was observed, attributed to solvation and depolymerization of the main polymeric chains. Thermal degradation kinetics of the gelatin raw material and as-spun electrospun membranes showed that the electrospinning processing conditions do not influence polymer degradation. However, for cross-linked samples a decrease in the activation energy was observed, associated with the effect of glutaraldehyde cross-linking reaction in the inter-and intra-molecular hydrogen bonds of the protein. It is also shown that the electrospinning process does not affect the formation of the helical structure of gelatin chains. Polymer Testing 32 (5), 995http://dx

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“…4. These characteristic peaks are usually assigned to the triplehelical crystalline structure in gelatin [29,30]. …”

Section: Characterization Of Biopolymermentioning

confidence: 99%

Extraction and Characterization of Gelatin: A Functional Biopolymer

Das

Suguna

Prasad

et al. 2017

Int J Pharm Pharm Sci

120

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Objective: Gelatin is widely used biopolymer in various industries due to its excellent biocompatibility, biodegradability properties. In the present study, gelatin was extracted from fish wastes, as an alternative source.Methods: This biopolymer was extracted from the scales of freshwater fish, Labeo rohita. After extraction, the proximate analysis and physicochemical analysis of the fish scale gelatin were carried out. This functional polymer was also characterized using different analytical methods, such as UV-vis spectroscopy, scanning electron microscopy (SEM), and X-ray diffraction (XRD) for the evaluation of crystalline and surface morphology, and fourier transform infrared spectroscopy (FTIR) for structural determination. Results:The scales of L. rohita yield 24% (dry weight basis) of gelatin, indicating this fish species as potential source of gelatin. The proximate analysis determined was low moisture content (4.2%), ash (1.4%) and high protein (90%) content. The result of the study confirms the effectiveness of extraction method used. Conclusion:The fish scales of L. rohita are found to be a sustainable and renewable source of gelatin with desirable functionalities and it is the best alternative for mammalian gelatin in food and other industries.

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Enhancing water repellence and mechanical properties of gelatin films by tannin addition

Cited by 245 publications

References 48 publications

The Retention and Drainage Behavior of Cross-linked Gelatin with Glutaraldehyde in a Papermaking System

The Retention and Drainage Behavior of Cross-linked Gelatin with Glutaraldehyde in a Papermaking System

Thermal and hydrolytic degradation of electrospun fish gelatin membranes

Extraction and Characterization of Gelatin: A Functional Biopolymer

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