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Waste PET Chemical Processing to Terephthalic Amides and Their Effect on Asphalt Performance
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-04-02 , DOI: 10.1021/acssuschemeng.0c00036 Daniel R. Merkel 1 , Wenbin Kuang 1 , Deepika Malhotra 1 , Gayaneh Petrossian 1 , Lirong Zhong 1 , Kevin L. Simmons 1 , Jinwen Zhang 2 , Lelia Cosimbescu 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-04-02 , DOI: 10.1021/acssuschemeng.0c00036 Daniel R. Merkel 1 , Wenbin Kuang 1 , Deepika Malhotra 1 , Gayaneh Petrossian 1 , Lirong Zhong 1 , Kevin L. Simmons 1 , Jinwen Zhang 2 , Lelia Cosimbescu 1
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A chemical recycling approach of mixed PET was demonstrated here that provides a mechanism by which PET waste can be efficiently recovered and repurposed to value-added products. The approach utilizes aminolysis of PET with a variety of amine nucleophiles, generating a small library of terephthalic amides with distinct structures, such as polar, nonpolar, and lipophilic. In order to probe the value of these products, the terephthalic amides were added to road-grade asphalt binder at 5 wt %, and the fresh resulting composite was evaluated. Specifically, rutting and fatigue characteristics as well as thermomechanical and creep performance were characterized and found to be improved by the inclusion of these additives by as much as 18%. In this work, additives made from deconstructed PET wastes were shown to improve the performance properties of asphalt at a variety of environmental conditions. It is important to note that the asphalt binder utilized in this work was a commercial product already optimized for road conditions, not the raw bitumen; perhaps higher performance metrics could be obtained with virgin bitumen.
中文翻译：
废PET化学加工成对苯二甲酸酰胺及其对沥青性能的影响
此处展示了一种混合PET的化学回收方法，该方法提供了一种机制，通过该机制可以有效地回收PET废料并将其重新用于增值产品。该方法利用PET与各种胺亲核试剂的氨解作用，生成一个具有不同结构（如极性，非极性和亲脂性）的小对苯二甲酰胺文库。为了探究这些产品的价值，将对苯二甲酰胺以5 wt％的比例添加到道路级沥青粘合剂中，并对所得的新鲜复合材料进行评估。具体而言，对车辙和疲劳特性以及热机械性能和蠕变性能进行了表征，发现通过添加这些添加剂最多可提高18％。在这项工作中 由解构的PET废料制成的添加剂在各种环境条件下均能改善沥青的性能。重要的是要注意，这项工作中使用的沥青粘合剂是已经针对道路条件进行了优化的商业产品，而不是原始沥青。也许可以使用原生沥青获得更高的性能指标。
更新日期：2020-04-03
中文翻译：
废PET化学加工成对苯二甲酸酰胺及其对沥青性能的影响
此处展示了一种混合PET的化学回收方法，该方法提供了一种机制，通过该机制可以有效地回收PET废料并将其重新用于增值产品。该方法利用PET与各种胺亲核试剂的氨解作用，生成一个具有不同结构（如极性，非极性和亲脂性）的小对苯二甲酰胺文库。为了探究这些产品的价值，将对苯二甲酰胺以5 wt％的比例添加到道路级沥青粘合剂中，并对所得的新鲜复合材料进行评估。具体而言，对车辙和疲劳特性以及热机械性能和蠕变性能进行了表征，发现通过添加这些添加剂最多可提高18％。在这项工作中 由解构的PET废料制成的添加剂在各种环境条件下均能改善沥青的性能。重要的是要注意，这项工作中使用的沥青粘合剂是已经针对道路条件进行了优化的商业产品，而不是原始沥青。也许可以使用原生沥青获得更高的性能指标。
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