用于回收聚对苯二甲酸乙二醇酯的无聚苯乙烯扩链剂,ACS Applied Polymer Materials

当前位置： X-MOL 学术 › ACS Appl. Polym. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

用于回收聚对苯二甲酸乙二醇酯的无聚苯乙烯扩链剂
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2022-11-08 , DOI: 10.1021/acsapm.2c01544
Mohamed A. Abdelwahab ₁ , Ajmir Khan ₁ , Laurent M. Matuana ₁ , Rafael Auras ₁ , Muhammad Rabnawaz ₁

Affiliation

扩链剂是为了经济有效地恢复回收缩聚物（例如聚对苯二甲酸乙二醇酯）的性能而引入的添加剂。最广泛用于回收聚对苯二甲酸乙二醇酯 (rPET) 的商用扩链剂是 Joncryl ADR (ADR) 系列共聚物，由苯乙烯、甲基丙烯酸缩水甘油酯 (GMA) 和丙烯酸丁酯 (BA) 组成。然而，聚苯乙烯在较高温度下易于降解。因此，本研究的目的是为 rPET 回收创造不含聚苯乙烯的扩链剂。由 GMA、BA 和乙酰化甲基丙烯酸羟乙酯 (HEMA-Ac) 或苯甲酰化甲基丙烯酸羟乙酯 (HEMA-Bz) 通过自由基聚合合成不含聚苯乙烯的扩链剂，以增强 rPET 的热性能和机械性能。这些扩链剂由¹ H NMR 光谱、尺寸排阻色谱和差示扫描量热法。然后通过熔融反应挤出将扩链剂（1 份）与 rPET 混合，从而获得与商业扩链剂 ADR 相当的机械和热性能。这些添加剂为 ADR 提供了安全的替代品，并且能够回收大量的 rPET 和其他缩聚物，而不会产生任何有害的残留苯乙烯。

"点击查看英文标题和摘要"

Polystyrene-Free Chain Extenders for Recycled Poly(ethylene terephthalate)

Chain extenders are additives introduced to economically and efficiently restore the performance of recycled condensation polymers such as poly(ethylene terephthalate). The most widely used commercial chain extenders for recycled poly(ethylene terephthalate) (rPET) is the Joncryl ADR (ADR) family of copolymers which are composed of styrene, glycidyl methacrylate (GMA), and butyl acrylate (BA). However, polystyrene is prone to degradation at higher temperatures. Thus, the aim of this study was to create polystyrene-free chain extenders for rPET recycling. Polystyrene-free chain extenders were synthesized via free radical polymerization from GMA, BA, and acetylated hydroxyethyl methacrylate (HEMA-Ac) or benzoylated hydroxyethyl methacrylate (HEMA-Bz) to enhance the thermal and mechanical properties of rPET. These chain extenders were analyzed by ¹H NMR spectroscopy, size exclusion chromatography, and differential scanning calorimetry. The chain extender (1 phr) was then blended with rPET by melt reactive extrusion, resulting in mechanical and thermal properties comparable to those of the commercial chain extender ADR. These additives offer safe alternatives to ADR and will enable the recycling of large volumes of rPET and other condensation polymers without generating any harmful residual styrene.

更新日期：2022-11-08

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南