Tons of industrial residues are daily generated and require management strategies to be correctly disposed or recycled. Therefore, the reuse of organic and industrial wastes as fillers in polymeric composites has gained attention as a new research field. Here, it is demonstrated for the first time the use of Grits waste as filler in natural rubber composites to reuse the eucalyptus kraft pulp residue as well as to decrease the final cost of rubber products by totally or partially replacing the commercial fillers. Untreated waste was employed without pH correction and any coupling agent, while the treated waste had a pH correction and treatment with Dodigen 1611 which is a coupling agent formed by quaternary ammonium salt and increase the residue dispersion or linked it into the polymeric matrix. The pH correction was applied to avoid interference in the vulcanization reaction and it was performed with acetic acid 50% v/v until waste neutralization. Composites with 20 phr of untreated Grits have shown an increase, around 7%, in the stress values when compared to the unfilled natural rubber. However, composites with 20 phr of treated Grits had an increase of 20%. Abrasion loss results show that abrasion resistance tended to decrease when untreated and treated Grits contents are higher than10 phr. An alternative application for the Grits waste composites was in the production of slippers. The produced composites were able to be processed, cut, and molded in an industry of shoes and slippers. The slippers could be well implemented as the composite flexibility was preserved.

每天都会产生大量的工业残留物，需要正确处置或回收利用管理策略。因此，作为新的研究领域，有机和工业废料在聚合物复合材料中作为填料的再利用受到了关注。在这里，首次证明了使用Grits废料作为天然橡胶复合材料中的填料，以重新利用桉树牛皮纸浆残余物，以及通过完全或部分替代商业填料来降低橡胶产品的最终成本。使用未经处理的废料而不进行pH校正和任何偶联剂，而处理过的废料具有pH校正并用Dodigen 1611处理，Dodigen 1611是一种由季铵盐形成的偶联剂，可增加残留物的分散度或将其连接到聚合物基质中。进行pH校正以避免干扰硫化反应，并使用50％v / v的乙酸进行校正，直到废物被中和。与未填充的天然橡胶相比，具有20 phr未经处理的砂砾的复合材料的应力值增加了大约7％。但是，含有20 phr处理过的Grits的复合材料增加了20％。磨损损失结果表明，当未处理和处理的砂砾含量高于10 phr时，耐磨性趋于降低。Grits废料复合材料的另一种应用是在拖鞋生产中。所生产的复合材料能够在制鞋业和拖鞋业中进行加工，切割和成型。拖鞋可以很好地实现，因为可以保留复合材料的柔韧性。