材料科学
吸附
化学工程
超临界流体
环境友好型
分散剂
挤压
解吸
吸收(声学)
复合数
复合材料
环境污染
色散(光学)
有机化学
化学
工程类
物理
光学
生物
环境保护
环境科学
生态学
作者
Minghui Wu,Minghui Wu,Tongwen Xu,Jingling Tang,Wei Ma,Xiang Zhu,Qian Ren,Long Wang,Wenge Zheng
标识
DOI:10.1016/j.ijbiomac.2023.127844
摘要
To address the challenges posed by spilled oil and oily wastewater, the development of clean oil-adsorption materials is crucial. However, traditional oil-adsorption materials suffer from the issue of secondary pollution. Herein, fully biodegradable nanofibrillated poly(butylene succinate)/poly(lactic acid) (PBS/PLA) foams with outstanding selective oil-adsorption performance were successfully fabricated via an eco-friendly supercritical CO2 foaming technology. The PBS/PLA composites, featuring nanofibrils with a diameter of approximately 100 nm, were prepared through a hot-stretching method subsequent to extrusion. Substantial improvements were observed in the crystallization rate and rheological properties of the fibrillated PBS/PLA composites. Furthermore, PLA nanofibrils enhanced foamability of the composite, achieving an impressive expansion ratio of up to 38.0, resulting in an outstanding oil-absorption performance (19.2–50.4 g/g) of the F-1 %-95 foam. Additionally, 20 adsorption-desorption cycles illustrated the prepared F-1 %-95 foam displayed recyclable oil-absorption characteristics. This work provides an eco-friendly strategy for preparing fully biodegradable foams intended for application as oil-adsorption materials.
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