Eco-Leather: Properties of Chromium-Free Leathers Produced with Titanium Tanning Materials Obtained from the Wastes of the Metal Industry

Mutlu, Mehmet Mete; Crudu, Marian; Maier, Stelian Sergiu; Deselnicu, Dana Corina; Albu, Luminita; Gülümser, Gürbüz; Bitlisli, Behzat Oral; Başaran, Bahri; Tosun, Cemile Ceren; Zengin, Arife Candaş Adigüzel

doi:10.5053/ekoloji.2014.9110

Cited by 14 publications

(10 citation statements)

References 6 publications

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“…It is well known that possible sources of Cr include leather manufacturing (Földi et al 2013, Kumar et al 2014, being the tanning method the most utilized for a century (Mutlu et al 2014). So, Testa et al (2004) confirmed the leather tanning is a significant activity present in the Piranhas-Açu watershed.…”

Section: Resultsmentioning

confidence: 77%

Potentially mobile of heavy metals on the surface sediments in tropical hyper-saline and positive estuaries

Silva

Fonseca

Grotto

et al. 2017

An. Acad. Bras. Ciênc.

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Estuarine sediments represent important pools of trace metals, released from both anthropogenic and natural sources. Fluctuations in the water column physicochemical conditions, on the other hand, may transfer metals from solid to liquid compartment and resulting in contamination of the surrounding environment. The present research was carried out to evaluate the weakly bounded heavy metal levels in tropical hypersaline and positive estuaries, in order to quantify its potentially availability. The monitoring includes five metals (Cd, Cr, Cu, Pb, Zn) and cover nine estuaries in Rio Grande do Norte state/Brazil, including four hypersaline and five true estuaries. 50 surface sediment samples were collected in each estuary. At the same time, organic matter concentrations were evaluated in order to help explaining possible local variations in heavy metal levels. Organic matter results (0.7% -7.3%) suggest the positive Potengi estuary as the most critical environmental quality situation. On the other hand, according to heavy metals levels, both Conchas and Potengi estuaries registered the higher concentrations of Cr. The highest concentrations were observed in the hyper-saline estuaries, with the exception of the Zn. The present study revealed that the watershed occupation has significantly influenced the heavy metal concentrations in the estuaries.

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Section: Resultsmentioning

confidence: 77%

Potentially mobile of heavy metals on the surface sediments in tropical hyper-saline and positive estuaries

Silva

Fonseca

Grotto

et al. 2017

An. Acad. Bras. Ciênc.

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“…The spectrophotometric color measurements of ink-dyed leathers prior and subsequent to washing are shown in Table 2 (Mutlu et al, 2014). The color measurement values of ink dyed leathers showed that there was a color difference between the grain and suede side of the leathers (ΔE).…”

Section: Resultsmentioning

confidence: 99%

Ink Dyes for Washable Leathers

Zengin¹,

Sardroudi²,

Kılıç³

et al. 2016

The International Conference on Advanced Materials and Systems

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Inks, contain pigments or dyes in liquid or paste form, are used to color an image, text, or design. Although some patents describing the ink jet printing methods for textile and leather were found, no report was found addressing the application of ink dyes in leather dying process and determination of washing and other fastness properties. In this study, the potential application of ink dyes in leather industry was investigated as an alternative to conventional dyes for the production of washable leathers in dying process. For this purpose, leather-dyeing recipes were developed by using two different ink dyes and applied at dying process of metis type crust leathers in order to produce washable leathers. The quality performance of dyed leathers were investigated in terms of color measurements, to-and-fro rubbing fastness, crockmeter rubbing fastness, and light fastness characteristics before and after washing leathers in a washing machine under specified conditions according to ISO 15702 standard. The color measurements prior and subsequent to washing process were determined with Minolta CM-3600A spectrophotometer. Toand-fro rubbing, crockmeter and light fastness properties were examined in accordance with ISO 11640, ASTM D5053 and ISO 105-B02 standards respectively. The results of the study showed that ink dyes could be used as a newly adapted dye group and applied successfully in leather dyeing process for the production of washable leather goods.

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“…The color change of thermochromic leathers aged artificially under two different conditions such as 24h at 60 o C and 24h at 50 o C and 90% humidity were evaluated according to CIE Lab color system and the L*a*b coordinates are explained as L* = 0 yields black and L* = 100 yields white; negative values of a* indicate green, positive values indicate red; negative b* values indicate blue and positive values indicate yellow [21]. The display of thermochromic leathers produced with cold and touch activated thermochromic pigments used in the leather finishing process with the combination of conventional pigments, UV absorber and cross-linker are shown in Figure 1.…”

Section: Resultsmentioning

confidence: 99%

Sıcaklığa Duyarlı Derilerin Yaşlanma Davranışları

Zengin¹,

Küçükakin²,

Bitlisli³

2017

J Text Eng

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Enhancing fastness properties of thermochromic dyes and pigments provide unique and assertive design opportunities and an innovative approach for leather industry. For this purpose, the ageing behavior of thermochromic pigments (cold and touch activated) used in leather finishing process by the addition of UV absorbent and cross-linker was investigated. The color changing effect of thermochromic leathers was determined spectrophotometrically prior and subsequent to accelerated ageing tests performed under two different conditions (only heat and heat associated with relative humidity). No significant effect of ageing was found on thermochromic leathers. However, a partial decrease was determined for the cold activated leathers and it was prevented by the use of UV absorbent and cross-linker.

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Eco-Leather: Properties of Chromium-Free Leathers Produced with Titanium Tanning Materials Obtained from the Wastes of the Metal Industry

Cited by 14 publications

References 6 publications

Potentially mobile of heavy metals on the surface sediments in tropical hyper-saline and positive estuaries

Potentially mobile of heavy metals on the surface sediments in tropical hyper-saline and positive estuaries

Ink Dyes for Washable Leathers

Sıcaklığa Duyarlı Derilerin Yaşlanma Davranışları

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