Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 407, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2020.124395
Keywords
VOCs filtration; Laser irradiation; Nanolayer coextrusion; Polyethylene; Porous carbonized structure
Categories
Funding
- National Natural Science Foundation of China [21704008]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [19KJB430008]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Top-Notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
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This study demonstrates the preparation of polyethylene porous fiber membrane with excellent low-concentration VOCs filtration performance using laser irradiation technology. Controllable thermal energy generated by laser irradiation produces a porous carbon layer on the surface of the fiber membrane, which efficiently adsorbs xylene gas. This research provides a positive reference for the large-scale preparation of polyolefin porous fiber membrane with VOCs filtration by simple and efficient laser irradiation method.
In recent years, volatile organic compound (VOC) gases have caused potential harm to people's health. This study reveals the preparation of polyethylene porous fiber membrane with excellent low-concentration VOCs filtration performance via laser irradiation technology. A neodymium-doped yttrium aluminum garnet (Nd:YAG) pulsed laser beam was used to scan the laser-sensitive low-density polyethylene/carbon black (LDPE/CB) fibers prepared by nanolayer coextrusion in the air. The controllable thermal energy generated by laser irradiation makes the surface of the fiber membrane to produce a porous carbon layer in situ. Laser power and scanning speed are important parameters for controlling laser-induced carbonization. The results indicate that the rich fluffy carbon structures on the surface of the porous fiber membrane can efficiently adsorb xylene gas. This study can provide a positive reference for the large-scale preparation of polyolefin porous fiber membrane with VOCs filtration by simple and efficient laser irradiation method.
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