Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Low-Temperature Assembling Strategy of a Nacre-Inspired Lamellar Configuration to Upcycling Biaxially Oriented Polypropylene Film Waste
ACS Omega ( IF 3.7 ) Pub Date : 2023-08-14 , DOI: 10.1021/acsomega.3c04689 Qingquan Jiang 1 , Qi Wu 1 , Min Nie 1 , Rui Han 2 , Lei Wu 3
ACS Omega ( IF 3.7 ) Pub Date : 2023-08-14 , DOI: 10.1021/acsomega.3c04689 Qingquan Jiang 1 , Qi Wu 1 , Min Nie 1 , Rui Han 2 , Lei Wu 3
Affiliation
|
The efficient recycling and utilization of plastic waste have become a hot topic of global concern, but conventional mechanical recycling not only deteriorates the performance of recycled plastic but also loses the intrinsic structure and properties of the original product. Herein, an upcycling strategy of a biaxially oriented polypropylene (BOPP) film was proposed by duplicating the lamellar configuration established in nature nacre. Especially the suspension of PP wax was deposited on the surface of the BOPP film by spray-coating, followed by layer-by-layer assembling and hot-pressing at 160 °C above the melting temperature of PP wax but below the initial melting temperature of the BOPP film. In this case, PP wax not only functioned as a binder to enable strong interfacial adhesion between the BOPP films via interfacial diffusion but also acted as a soft phase to insert between the rigid BOPP films, constructing a soft–hard alternatively aligned configuration similar to brick-and-mortar architecture in nature nacre. As a result, the mechanical properties of the lamellar sample markedly outperformed those of the conventional mechanically recycling sample, evidenced by 113 and 1141% increases in tensile strength and impact strength, respectively. This simple and effective method provides a new strategy for efficient upcycling of oriented packaging films, which is important to realize the sustainable recycling of plastic waste.
中文翻译：
受珍珠母启发的层状结构的低温组装策略对双向拉伸聚丙烯薄膜废料进行升级改造
塑料废弃物的高效回收利用已成为全球关注的热点话题，但传统的机械回收不仅使再生塑料的性能恶化，而且失去了原产品的内在结构和性能。在此，通过复制天然珍珠层中建立的层状结构，提出了双向拉伸聚丙烯（BOPP）薄膜的升级回收策略。特别是通过喷涂将PP蜡的悬浮液沉积在BOPP薄膜的表面，然后在高于PP蜡的熔化温度但低于PP蜡的初始熔化温度的160℃下进行逐层组装和热压。 BOPP薄膜。在这种情况下，PP蜡不仅充当粘合剂，通过界面扩散使BOPP薄膜之间具有强大的界面粘合力，而且还充当软相插入刚性BOPP薄膜之间，构建类似于砖的软硬交替排列配置自然珍珠层中的灰浆建筑。结果，层状样品的机械性能明显优于传统机械回收样品，拉伸强度和冲击强度分别提高了 113% 和 1141%。这种简单有效的方法为定向包装薄膜的高效升级回收提供了新策略，对于实现塑料废弃物的可持续回收利用具有重要意义。
更新日期：2023-08-14
中文翻译：
受珍珠母启发的层状结构的低温组装策略对双向拉伸聚丙烯薄膜废料进行升级改造
塑料废弃物的高效回收利用已成为全球关注的热点话题，但传统的机械回收不仅使再生塑料的性能恶化，而且失去了原产品的内在结构和性能。在此，通过复制天然珍珠层中建立的层状结构，提出了双向拉伸聚丙烯（BOPP）薄膜的升级回收策略。特别是通过喷涂将PP蜡的悬浮液沉积在BOPP薄膜的表面，然后在高于PP蜡的熔化温度但低于PP蜡的初始熔化温度的160℃下进行逐层组装和热压。 BOPP薄膜。在这种情况下，PP蜡不仅充当粘合剂，通过界面扩散使BOPP薄膜之间具有强大的界面粘合力，而且还充当软相插入刚性BOPP薄膜之间，构建类似于砖的软硬交替排列配置自然珍珠层中的灰浆建筑。结果，层状样品的机械性能明显优于传统机械回收样品，拉伸强度和冲击强度分别提高了 113% 和 1141%。这种简单有效的方法为定向包装薄膜的高效升级回收提供了新策略，对于实现塑料废弃物的可持续回收利用具有重要意义。
京公网安备 11010802027423号