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Gamma irradiation a green alternative for hides and leather conservation
Radiation Physics and Chemistry ( IF 2.9 ) Pub Date : 2021-01-28 , DOI: 10.1016/j.radphyschem.2021.109369
Carmen Gaidau , Ioana Rodica Stanculescu , Maria Stanca , Mihalis Cutrubinis , Laura Trandafir , Mioara Alexandru , Cosmin-Andrei Alexe

In this work bovine hides were treated with 25, 35 and 50 kGy in a Gamma Chamber 5000 self-shielded research irradiator and the influence of radiation dose on hide microbiological load, collagen crosslinking, interfibrillary substances solubility by shrinkage temperature and soluble nitrogen was evaluated in comparison with crude hide and sodium chloride treated hides (raw hides). Pilot level experiments were performed on large hide quantities in a SVST-Co-60/B Multipurpose Gamma Industrial Irradiator at 25 kGy as well as on semi processed leathers e.g. wet-blue, split wet-blue and crust. The evaluation of shrinkage temperature, microbiological load and physico-chemical and mechanical characteristics of gamma irradiated leathers showed that small modifications are induced by 25 kGy gamma irradiation. The scanning electron microscopy images of leather cross sections and Fourier Transform Infrared spectra confirmed minimum structural modifications at molecular level and not at microscopic level. Gamma irradiation allows conservation of high quantities of hides and leathers with impact on final product quality improvement, substantial infection reduction in abattoirs, raw material warehouses or tanneries shops, reduction of total dissolved solids by 40% and of chloride concentration by 78% from wastewaters.



中文翻译:

伽马射线辐射是生皮和皮革保护的绿色替代品

在这项工作中,在Gamma Chamber 5000自屏蔽研究辐照器中分别对牛皮革进行了25、35和50 kGy的处理,并评估了辐照剂量对皮革微生物负荷,胶原交联,收缩温度和可溶性氮对纤维间物质溶解度的影响。与生皮和氯化钠处理过的生皮(生皮)进行比较。导频电平实验在大批量隐藏在SVST的Co-60 / B多用途伽马工业辐射器在25kGy下以及在半加工皮革进行例如蓝湿皮,蓝湿皮和硬皮。γ辐照皮革的收缩温度,微生物负荷以及理化和机械特性的评估表明,通过25 kGyγ辐照诱导了小的修饰。皮革横截面的扫描电子显微镜图像和傅立叶变换红外光谱证实了在分子水平而非微观水平的最小结构修饰。伽马射线辐照可以保护大量的生皮和皮革,从而影响最终产品质量的改善,屠宰场,原料仓库或制革厂的感染率大大降低,废水中总溶解固体减少40%,氯离子浓度减少78%。

更新日期:2021-02-03
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