首页|A scalable versatile methodology to construct micro/nano open-cell polypropylene foam with high oil adsorption capacity and speed

A scalable versatile methodology to construct micro/nano open-cell polypropylene foam with high oil adsorption capacity and speed

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Oil pollution is a serious environmental and natural resource problem.Traditional adsorption materials for oil-water separation have limitations in terms of their preparation cost,reusability,and mechanical properties.Among the conventional adsorption materials,super-hydrophobic/super-lipophilic materials are easily contaminated by oil.In this study,polypropylene(PP)is used as a foam substrate to prepare an open-cell PP foam via hot pressing,supercritical CO2 foaming,and electron beam(EB)irradiation.The impact of EB irradiation dose on the open-cell content of PP foam can lead to cell wall rupture,resulting in an open-cell structure that enhances oil-water separation performance.At an absorbed radiation dose of 200 kGy,the PP foams exhibit optimal oil-water separation performance,cyclic compression stability,heat insulation,and preparation cost.The open-cell content of PP foam is increased to 86.5％,the adsorption capacity for diesel oil is 42.8 g/g,and the adsorption efficiency remains at 99.6％after 100 cycles of oil desorption in a complex pH environment.Meanwhile,cracks and nano-voids simultaneously promote the capillary action of oil,and the oil transport rate is 0.0713 g/(g·s).This study provides a new concept for the preparation of open-cell polymer foams that can meet the demand for high oil-absorption capacity under complex acid-base pH conditions.

open-cell polypropylene(PP)foamelectron beam irradiationoil/water separationcyclic compressioncomplex acid-base pH conditions

Chenguang Yang、Dechang Tao、Kun Yan、Zhiyao Li、Qingshi Guo、Wenwen Wang、Dong Wang

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Key Laboratory of Textile Fiber and Products(Wuhan Textile University),Ministry of Education,Wuhan Textile University,Wuhan 430200,China

College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

12205225U20A2025751873166

2024

10.1007/s12274-023-6165-1

纳米研究(英文版)

纳米研究(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.17(4)
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