The Stability of Metal-tanned and Semi-metal Tanned Collagen
Birinci sıra geçiş meta/lerinin metal ve yarı-metal tabak/ama potansiyelleri deri tozu kullanılarak çalışılmıştır. Geçiş metalleri yarı-metal tabaklamada farklı seviyelerde sinerjistik hidrotermal stabilizasyon gösterirler. Metal ve yarı-metal tabak/anmış derilerde tabaklama etkileşiminin stabilitesinin ve kalıcılığının takip edilmesi amacıyla hidrotermal stabilite ölçümleri düzenli olarak yapılmıştır. Sonuçlar; bazı geçiş metal/erinin katalizör rolü üstlendiği redoks etkileşimleri sonucunda, derinin fizikokimyasal özelliklerinin değişebildiğini göstermiştir. Derinin metal katalizlenmiş oksidatif parçalanmasının derecesi, tabak/ama matriksinin ve aynı zamanda kollajenin kendisinin tamamen parçalanmasına kadar gerçekleşebilir. Yarı-vanadyum VI) derinin metal katalizlenmiş kendiliğinden parçalanmasına ilişkin mekanizma önerisi, deneysel sonuçlar ve vanadyum tuzlarının fenolik bileşiklerle olan etkileşimine ilişkin önceki çalışmalarda yer alan bilgiler de tekrar değerlendirilerek tartışılmıştır.
Metal Tabaklanmış ve Yarı-Metal Tabaklanmış Kolajenin Stabilitesi
The metal tanning and semi-metal tanning potency of the first row transition metals was studied using hide powder. Transitionmetals show different levels of synergistic hydrothermal stabilisation in semi-metal tanning. Measurement of hydrothermalstability was carried out regularly in order to monitor the stability and permanence of tanning interactions in metal tannedand semi-metal tanned leathers. The results indicate that the physico-chemical properties of leather can be altered asresult of redox interactions, in which certain transition metals play the role of catalyst. The extent of metal catalysedoxidative degradation of leather can proceed to the extent of complete destruction of the tanning matrix as well as thecollagen itself. proposed mechanism of metal catalysed autodegradation in semi-vanadium (IV) leather is discussed withregard to experimental results and review of earlier research on the interaction of vanadium salts with phenolic compounds.
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- ISSN: 1307-427X
- Yayın Aralığı: Yılda 3 Sayı
- Yayıncı: Deri Teknologları Teknisyenleri ve Kimyacilari dernegi
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