Prochon Miroslawa, Marzec Anna, Dzeikala Oleksandra
Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego 12/16, 90-924 Lodz, Poland.
Materials (Basel). 2020 Mar 25;13(7):1498. doi: 10.3390/ma13071498.
Buffing Dust Collagen (BDC) is a hazardous waste product of chromium tanning bovine hides. The aim of this study was to investigate whether BDC has the desirable properties required of modern fillers. The microstructural properties of BDC were characterized by elemental analysis (N, CrO) of dry residue and scanning electron microscopy (SEM). The BDC was applied (5 to 30 parts by weight) to styrene butadiene rubber (SBR), obtaining SBRBDC composites. The physicochemical properties of the SBRBDC composites were examined by Fourier transform infrared analysis, SEM, UV-Vis spectroscopy, swelling tests, mechanical tests, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The biodegradability of the SBRBDC composites and their thermo-oxidative aging were also investigated. The filler contributed to increase the cross-link density in the elastomer structure, as evidenced by enhanced mechanical strength. The introduction of a filler into the elastomer structure resulted in an increase in the efficiency of polymer bonding, which was manifested by more favorable rheological and mechanical parameters. It also influenced the formation of stable interfacial bonds between the individual components in the polymer matrix, which in turn reduced the release of compact chromium in the BDC filler. This was shown by the absorption bands for polar groups in the infrared analysis and by imaging of the vulcanization process.
抛光粉尘胶原蛋白（BDC）是铬鞣牛皮的一种危险废弃物。本研究的目的是调查BDC是否具有现代填料所需的理想性能。通过对干残渣进行元素分析（N、CrO）和扫描电子显微镜（SEM）对BDC的微观结构特性进行了表征。将BDC（5至30重量份）应用于丁苯橡胶（SBR），得到SBRBDC复合材料。通过傅里叶变换红外分析、SEM、紫外可见光谱、溶胀试验、力学试验、热重分析（TGA）和差示扫描量热法（DSC）对SBRBDC复合材料的物理化学性质进行了研究。还研究了SBRBDC复合材料的生物降解性及其热氧化老化。填料有助于提高弹性体结构中的交联密度，机械强度增强证明了这一点。将填料引入弹性体结构导致聚合物粘结效率提高，这表现为更有利的流变学和力学参数。它还影响了聚合物基体中各组分之间稳定界面键的形成，这反过来又减少了BDC填料中致密铬的释放。红外分析中极性基团的吸收带和硫化过程成像证明了这一点。
