Evaluation of chrome-tanned leather solid wastes as lubricating filler agents

Collagen hydrolysates obtained from chromed leather solid wastes were modified with some fatty acids. These were examined in means of usability in fatliquoring process. The changes in leather characteristics, treated with condensates, were determined. According to findings, with lubricated collagen hydrolysates modified with myristic acid from saturated fatty acids and oleic acid from unsaturated acids leathers were showed better physical characteristics. Also, better results for lubrication of leathers were given by the condensates with the ratios of 1.0 hydrolysate:1.5 myristic acid and 1.0 hydrolysate:1.5 oleic acid

Determination of the effects of splitting and shaving operations before tanning at shoe upper leathers on the quality of leather

In this study, the effects of splitting and shaving process before tanning on the quality of leather are investigated. Within this scope, leathers are processed as shoe upper by splitting after liming and shaving after pickling methods and then by tanning as chrome, vegetable and wet-white. It is statically examined whether there is a significant difference between the physical and chemical properties of the leathers according to the tanning method used in this study. As a result, the quality properties that are examined, have been found to be generally high on the leathers that are processed by splitting and shaving before tanning compared to traditional methods

Determination of the effects of splitting and shaving operations before tanning at shoe upper leathers on the quality of leather

In this study, the effects of splitting and shaving process before tanning on the quality of leather are investigated. Within this scope, leathers are processed as shoe upper by splitting after liming and shaving after pickling methods and then by tanning as chrome, vegetable and wet-white. It is statically examined whether there is a significant difference between the physical and chemical properties of the leathers according to the tanning method used in this study. As a result, the quality properties that are examined, have been found to be generally high on the leathers that are processed by splitting and shaving before tanning compared to traditional methods

Microencapsulation of melaleuca alternifolia (tea tree) oil by using simple coacervation Method)

Glutaraldehyde (GA) crosslinked gelatin (G) microcapsules containing tea tree oil (TTO) were prepared by the simple coacervation technique. The effects of variations in concentrations of the G, TTO and GA used during the microencapsulation process, on the oil load of the microcapsules, the oil content, the encapsulation efficiency and the release rate of oil were determined. The size distribution and the morphology of the microcapsules were characterized by optical and scanning electron microscopy. It was determined by FTIR studies that there was no evidence for any significant interaction between G and TTO. © 2011 Allured Business Media

Assessment of the antifungal activity of lining leather treated with silver doped hydroxyapatite

In this study, silver doped hydroxyapatite (Ag-HA) prepared by the microwave method was applied to leather in the finishing composition and its antifungal effect was investigated. The surface morphology of treated leathers was observed using Scanning Electron Microscopy (SEM). The Ag content in leather samples was identified with inductively coupled plasma optical emission spectrometry (ICP-OES). The antifungal activities of the control leather and the 0%-5% Ag doped hydroxyapatite treated leather samples on the test fungi Aspergillus Niger TEM and Trichoderma viride TEM were evaluated according to ASTM D 4576-08:2008 Standard Test Method for Mold Growth Resistance of Wet-Blue Leather. According to the results of the study, the antifungal performances of the treated leather were increased by increasing the concentration of Ag in hydroxyapatite. Moreover, the leather treated with Ag doped hydroxyapatite containing 2% or more of silver showed strong antifungal activity and it was decided that Ag doped hydroxyapatite could be used as an antifungal agent on leathers

Assessment of antibacterial activity of silver doped hydroxyapatite on leather

S.C. PIELOREX S.A.;S.C. PRODSTEFANO S.R.L;S.C. TARO INDUSTRY S.A.;PRO COMOD SHOES SRL4th International Conference on Advanced Materials and Systems, ICAMS 2012 -- 27 September 2012 through 29 September 2012 -- Bucharest -- 100613In this study, silver doped hydroxyapatite (Ag-HA) prepared by microwave method was applied as the finishing agent on leather and its antibacterial effect was investigated. By using X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) structural properties of the prepared Ag-HA have been determined. Antibacterial activity of the leather treated with the Ag-HA was revealed by the agar diffusion method and the percentage of bacterial reduction tests. According to the results of the study, the leather treated with Ag-HA containing 2% and above amount of silver (Ag) showed strong antibacterial activity and the usability of the Ag doped hydroxyapatite as an antibacterial agent on lining leathers was decided upon