Altan AFŞAR, Buğra OCAK, Gürbüz GÜLÜMSER, Ahmet ASLAN

KOLLAGEN HİDROLİZATLARI İLE OKSAZOLİDİNİN DERİ İŞLENTİSİNDE BİRLİKTE KULLANILABİLİRLİĞİ ÜZERİNE BİR ARAŞTIRMA

Bu projede, derilerin dayanım ve dolgunluk özelliklerini geliştirmek için retenaj prosesinde kollagen hidrolizatı ile oksazolidinin birlikte kullanım ve deri endüstrisinin zararlı tıraş atıklarını değerlendirme olanakları araştırılmıştır. Bu atıklar, alkali bir ortamda ticari bir enzim preperatı ile hidrolize edilmiştir. Elde edilen kollagen hidrolizat, oksazolidin ile birlikte retenaj işleminde kullanılmıştır. Farklı oranlarda uygulanan kollagen hidrolizatı (% 7.5, 10.0, 12.5 ve 15.0) ile oksazolidinin (% 4.0, 6.0 ve 8.0) deriye verdiği dayanım ve dolgunluk özellikleri tespit edilmiştir. Sonuçta, uygulanan tüm kombinasyonların deride istenilen özellikleri geliştirdiği saptanmıştır. En iyi değerler ise % 15 hidrolizat ve % 6 oksazolidin kullanılması ile elde edilmiştir

Anahtar Kelimeler:

Kromlu tıraş atığı, Kollagen hidrolizatı, Oksazolidin, Retenaj, Kopma dayanımı, Dolgunluk, Yırtılma dayanımı, Deri

A STUDY ON USABILITY OF COLLAGEN HYDROLYSATE ALONG WITH OXAZOLIDINE IN LEATHER PROCESSING

In this study, it is aimed to find out usability of collagen hydrolysate along with oxazolidine in retanning process to achieve an enhanced over all strength and fullness properties of leathers and to reuse hazardous chromed shaving wastes from leather industry as well. Those wastes were hydrolyzed with commercial enzyme preparation in an alkali medium. This collagen hydrolysate was used along with oxazolidine in retanning process. Strength and fullness properties of leathers were evaluated after applying varying ratios of collagen hydrolysates (7.5-10.0-12.5-15.0 %) along with oxazolidines (4-6-8%). As a result it is determined that all applied combinations had enhanced expected properties of leather. The highest strength and fullness properties were found to be achieved in the samples which were processed with the combination of 15 % hydrolysate and 6 % oxazolidine

Keywords:

Chromed shaving waste, Collagen hydrolysate, Oxazolidine, Retanning, Tensile strength, Fullness, Tear load, Leather,

PDF

___

1. Püntener, A., 1995, “The Ecological Challenge of Producing Leather”, J. Am. Leather Chem. Soc., 90, pp. 206-219.
2. Buljan, B., Reich, G., Ludwig, J., 1999, “Mass Balance in Leather Processing”, World Leather, 12, pp. 34-46.
3. Taylor, M.M., Diefendorf, E.J., Thompson, C.J., Brown, E.M., Marmer, W.N., Cabeza, L.F., 1997, “Extraction of Value by Products from the Treatment of Chromium Containing Collagenous Leather Industry Waste”, J. Soc. Leather Technol. Chem., 81, pp. 5-13.
4. Sundar, V.J., Rao, J.R., Muradlidharan, C., 2002, “Cleaner Chrome Tanning-Emerging Options”, J. Clean Prod, 10, pp. 69-74.
5. Taylor, M.M., Diefendorf, E.J., Na G.C., 1990, “Enzymic Treatment of Chrome Shavings”, J. Am. Leather Chem. Assoc., 85, pp. 264- 275.
6. Bajza, Z., Vrcek, V., 2001, “Thermal and Enzymatic Recovering of Proteins from Untanned Leather Waste”, Waste Management, 21, pp. 79-84.
7. Kolomaznik, K., Lanmaier, F., Mladek, M., Taylor, M., 1997, “Industrial Treatment of Chrome Tanned Solid Waste”, International Union of Leather Technologists and Chemists Societies Centenary Congress, London. 238 p.
8. Trandafir, V., Cioroianu, T.M., Bratulescu, V., Sarbu, C., Madalina, A., 2003, “Use of Collagen Hydrolysate As Active Biologic Component for Biofertilisiers”, Poster presentation, International Union of Leather Technologists and Chemists Societies, XXVIII Congress, Cancun, Mexico.
9. Przepiorkowska, A., Chronska, K., Zaborski, M., 2007, “Chrome-Tanned Leather Shavings as A Filler of Butadiene–Acrylonitrile Rubber”, J. Hazard. Mater., 141, pp. 252-257.
10. Kishibe, M., Arima, S., Sugita, M., 1996, “Novel Noncatalytic Graft-Copolymerization Methyl Methacrylate onto Collagen”, The IIIrd Asian International Conference of Leather Science and Technology, Himeji City, Japan, pp. 319-326.
11. Vdeselnicu, Bucevschi, M.D., Colt, M., 2001, “Polymer-Collagen Composite Materials Used in Leather Finishing”, Poster Presentation International Union of Leather Technologists and Chemists Societies, XXVI Congress, Cape Town, South Africa.
12. Kanagaraj, J., Velappan, K.C. and Babu, N.K.C., 2006. Solid Wastes Generation in the Leather Industry and Its Utilization for Cleaner Environment-A Review. J. Sci. Ind. Res. 65: 541-548.
13. Langmaier, F., Mokrejs, P., Kolomaznik, K., Mladek, M., Karnas, R., 2007, “Cross-Linking Epoxide Resins with Hydrolysates of ChromeTanned Leather Waste”, J. Therm. Anal. Calorim. 88, pp. 857-862.
14. Kanagaraj, J., Samivelu, N., Rafiuddun, A.M.D., Jayakumar, R., 2002, “High Exhaust Chrome Tanning Using Fleshing Hydrolysate”, J. Am.Leather Chem. Assoc., 97, pp. 207-214.
15. Aslan, A., Gülümser, G., Ocak, B., 2006, “Increasing the Efficiency of Chromium Tanning by Using Collagen Hydrolysates from Shavings”, J. Soc. Leather Technol. Chem., 90, pp. 201-204.
16. Shi, B., He, Y. and Fan, H., 1999, “High Stability Organic Tanning Using Plant Polyphenols Part 2: The Mechanism of the Vegetable Tannin-Oxazolidine Tannage”, J. Soc. Leather Tech. Chem., 83 pp. 8-13.
17. Afşar, A., Şekeroğlu, O., 2006, “An Investigation About the Effect of Oxazolidine on Modified Valonia Extract Tanning”, IULTCS II. Eurocongress. 24-27 May. 2006 Istanbul.
18. Suparno, O., Covington, A.D., Evans, C.S., 2007, “Novel Combination Tanning Using Diphenols and Oxazolidine for High Stability Leather”, J. Soc. Leather Technol. Chem. 91, pp.188-192.
19. Beck, P.J., Rowlands, R.J., 1970, “Physical Properties and the Degree of Bilateral Symmetry Between Matched Sides of Leather”, J. Am.Leather Chem. Assoc., 65, pp.112-124.
20. IULTCS, 2008, “The IULTCS Official Methods of Analysis for Leather” http://www.iultcs.org/iultcs_methods.asp, 31.07.2008.
21. Olivannan, M.S., Rao, M.S., Suduua, S., Rao, J.B., Arumugham M.P., Rathnasabapathy, V., 1977, “Studies on the Leather Making Properties of Sheepskins of Mecheri and Mandya breeds”, Leather Sci., 24, pp. 371-377.
22. Ornes, C.L., 1962, “Studies of Fatliquoring. III. The Influence of Oil Level, Neutralization and Vegetable Mordanting on Some Physical Properties of Side Upper Leather”, J. Am. Leather Chem. Assoc., 57, pp. 107-115.
23. Venkatachalam, P.S., 1962, Lectures Notes on Leather, APO, CLRI, Madras, India.
24. Yakalı, T., 1975, “Değişik Kesim Devrelerine Ait Ege Orijinli Kuzu ve Toklu Derileri Üzerinde Araştırmalar”, Doçentlik Tezi, E.Ü. Ziraat Fakültesi.
25. UNIDO, 1976, “Acceptable Quality Levels in Leathers”, United Nations Publications, Sales Nr. E.76 II.B.G., New York.
26. Afşar, A., Yakalı, T., 1984, “Kürk-Süet Deri Özelliklerinin Bazı Yerli Koyun Irklarında Araştırılması”, Doğa Bilim Dergisi, 8 pp. 211-215.
27. Sharphouse, J.H., 1989, Leather Technican’s Handbook, Leather Producers’ Association, Northampton, 575 p.
28. Menteş, S., 1990, “İzmir Tabakhanelerinde İşlenen Giysilik Derilerin Fiziksel ve Kimyasal Özelliklerinin Araştırılması”, Yüksek Lisans Tezi, E.Ü. Ziraat Fakültesi, İzmir.
29. Akyüz, F., 1997, “Bitkisel Esasli Tabaklama Maddeleri ile Giysilik Koyun Derisi Üretimi Üzerinde Karşılaştırmalı Araştırmalar” Yüksek Lisans Tezi, E.Ü. Ziraat Fakültesi, İzmir. 162s.