Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Bahía Blanca 8000, Cno. "La Carrindanga" Km 7, Argentina; Departamento de Ingeniería Química, Universidad Nacional del Sur, Bahía Blanca 8000, Av. Alem 1253, Argentina.
Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Bahía Blanca 8000, Cno. "La Carrindanga" Km 7, Argentina; Departamento de Ingeniería Química, Universidad Nacional del Sur, Bahía Blanca 8000, Av. Alem 1253, Argentina.
J Environ Manage. 2018 Jul 1;217:381-390. doi: 10.1016/j.jenvman.2018.03.124. Epub 2018 Apr 5.
The aim of this work is to develop compatibilization strategies for High Impact Polystyrene (HIPS)/ Acrylonitrile-Butadiene-Styrene (ABS) blends from WEEE in order to add value to these recycled plastics by improving their mechanical performance. Results from a screening study of HIPS/ABS blends compatibilization by the addition of Styrene-Butadiene Rubber (SBR) are presented. Two different weight proportion of HIPS/ABS physical blends were analyzed, 80/20 and 20/80, with three different concentration of SBR: 2, 10 and 20 wt%. Compatibilization efficiency was analyzed from an accurate thermal and mechanical analysis, by comparing each physical blend and corresponding compatibilized blends with SBR. Results were discussed relating glass transition changes with mechanical performance, both aspects were interpreted in terms of blend morphology. Phase and fillers dispersion and distribution as well as SBR amount and its interaction with each phase were accurate analyzed. Compatibilization of HIPS/ABS blends from WEEE with the addition of SBR is effective in blends with HIPS as main component. With the addition of 2 wt% of SBR, strength and toughness have notably increased respect to the corresponding physical blend, 244% and 186% respectively. From this screening study is possible to infer that SBR is a sustainable and efficient compatibilizer of HIPS rich blends allowing to obtain a final blend that can be used as a replacement material of separated resins from WEEE.
这项工作的目的是为 WEEE 中的高抗冲聚苯乙烯（HIPS）/丙烯腈-丁二烯-苯乙烯（ABS）共混物开发增容策略，通过提高其机械性能为这些回收塑料增加价值。介绍了通过添加苯乙烯-丁二烯橡胶（SBR）对 HIPS/ABS 共混物进行增容的筛选研究结果。分析了两种不同重量比例的 HIPS/ABS 物理共混物，80/20 和 20/80，以及三种不同浓度的 SBR：2、10 和 20wt%。通过比较每个物理共混物和相应的用 SBR 增容的共混物，从准确的热和机械分析中分析了增容效率。结果与机械性能相关的玻璃化转变变化进行了讨论，从共混物形态的角度解释了这两个方面。准确分析了相和填料的分散和分布以及 SBR 的数量及其与各相的相互作用。用 SBR 对 WEEE 中的 HIPS/ABS 共混物进行增容，对于以 HIPS 为主要成分的共混物是有效的。与相应的物理共混物相比，添加 2wt%的 SBR 后，强度和韧性分别显著提高了 244%和 186%。通过这项筛选研究可以推断，SBR 是一种可持续且有效的 HIPS 富共混物增容剂，可获得可作为 WEEE 中分离树脂替代材料的最终共混物。
