Influence of crosslinkers and crosslinking method on the properties of gelatin films extracted from leather solid waste

Mercedes Catalina, Geoff E Attenburrow, J Cot, Anthony D Covington, A Paula M Antunes

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Gelatin was extracted from chrome tanned leather waste with the aim to produce a durable coating or film. Crosslinking has shown to improve the physical performance of a film/coating. The effect of the method of crosslinking and the use of different crosslinking agents were studied. The extracted gelatin was crosslinked either by immersion of preformed films into a crosslinker solution (Method A) or by the addition of the crosslinking reagent to the gelatin solution prior to film formation (Method B). The different results obtained between both methods may be due to: the relative concentration of crosslinking reagent, the introduction of crosslinks within different regions of gelatin (triple helical regions and random coil regions), and the reaction rate. Method A of crosslinking is more likely to form crosslinks outside but close to the triple helical regions, disrupting the order and stability of the helical structure. Crosslinks may form preferentially within the random coil regions when Method B of crosslinking is used. Both methods led to the formation of chemical crosslinks in the extracted gelatin films, as demonstrated by the reduction of the degree of aqueous swelling and the proportion of low molecular weight fractions
    Original languageEnglish
    Article number4
    Pages (from-to)1097-4628
    Number of pages3532
    JournalJournal of Applied Polymer Science
    Volume119
    Issue number4
    DOIs
    Publication statusPublished - 26 Aug 2010

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    Leather
    Solid wastes
    Crosslinking
    Gelatin
    Cross-Linking Reagents
    Coatings
    Reaction rates
    Swelling
    Molecular weight
    gelatin film

    Cite this

    Catalina, Mercedes ; Attenburrow, Geoff E ; Cot, J ; Covington, Anthony D ; Antunes, A Paula M. / Influence of crosslinkers and crosslinking method on the properties of gelatin films extracted from leather solid waste. In: Journal of Applied Polymer Science. 2010 ; Vol. 119, No. 4. pp. 1097-4628.
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    abstract = "Gelatin was extracted from chrome tanned leather waste with the aim to produce a durable coating or film. Crosslinking has shown to improve the physical performance of a film/coating. The effect of the method of crosslinking and the use of different crosslinking agents were studied. The extracted gelatin was crosslinked either by immersion of preformed films into a crosslinker solution (Method A) or by the addition of the crosslinking reagent to the gelatin solution prior to film formation (Method B). The different results obtained between both methods may be due to: the relative concentration of crosslinking reagent, the introduction of crosslinks within different regions of gelatin (triple helical regions and random coil regions), and the reaction rate. Method A of crosslinking is more likely to form crosslinks outside but close to the triple helical regions, disrupting the order and stability of the helical structure. Crosslinks may form preferentially within the random coil regions when Method B of crosslinking is used. Both methods led to the formation of chemical crosslinks in the extracted gelatin films, as demonstrated by the reduction of the degree of aqueous swelling and the proportion of low molecular weight fractions",
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    Influence of crosslinkers and crosslinking method on the properties of gelatin films extracted from leather solid waste. / Catalina, Mercedes; Attenburrow, Geoff E; Cot, J; Covington, Anthony D; Antunes, A Paula M.

    In: Journal of Applied Polymer Science, Vol. 119, No. 4, 4, 26.08.2010, p. 1097-4628.

    Research output: Contribution to journalArticleResearchpeer-review

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    AU - Antunes, A Paula M

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    AB - Gelatin was extracted from chrome tanned leather waste with the aim to produce a durable coating or film. Crosslinking has shown to improve the physical performance of a film/coating. The effect of the method of crosslinking and the use of different crosslinking agents were studied. The extracted gelatin was crosslinked either by immersion of preformed films into a crosslinker solution (Method A) or by the addition of the crosslinking reagent to the gelatin solution prior to film formation (Method B). The different results obtained between both methods may be due to: the relative concentration of crosslinking reagent, the introduction of crosslinks within different regions of gelatin (triple helical regions and random coil regions), and the reaction rate. Method A of crosslinking is more likely to form crosslinks outside but close to the triple helical regions, disrupting the order and stability of the helical structure. Crosslinks may form preferentially within the random coil regions when Method B of crosslinking is used. Both methods led to the formation of chemical crosslinks in the extracted gelatin films, as demonstrated by the reduction of the degree of aqueous swelling and the proportion of low molecular weight fractions

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