Nano-Sized Polyethylene Particles Produced by Nano-Second UV Laser Ablation

作     者：Kanehara, Ikuna Yamashita, Hiromasa Fujii, Sho Kimura, Tsuyoshi Yamamoto, Masaya Tanabe, Tadao 

作者机构：Department of Engineering and Design Shibaura Institute of Technology 3-7-5 Toyosu Tokyo Koto-ku1358548 Japan Department of Natural Science Kisarazu National College of Technology 2-11-1 Kiyomidai Higashi Chiba Kisarazu2920041 Japan Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University 2-3-10 Kanda-Surugadai Tokyo Chiyoda-ku101-0062 Japan Department of Materials Processing Graduate School of Engineering Tohoku University 6-6-02 Aramaki-Aza Aoba Aoba-ku Sendai980-8579 Japan 

出 版 物：《Lasers in Manufacturing and Materials Processing》 (Lasermed. Imunopatol. Manuf. Mater. P. V.)

年 卷 期：2023年第10卷第3期

页      面：389-399页

核心收录：

学科分类：1004[医学-公共卫生与预防医学(可授医学、理学学位)] 1002[医学-临床医学] 070207[理学-光学] 1001[医学-基础医学(可授医学、理学学位)] 07[理学] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：This work was supported by JST  CREST Grant Number JPMJCR21L6  and JSPS KAKENHI  Grant Number JP21K19840  Japan 

主　　题：Laser ablation 

摘      要：Model samples of nano-sized crystalline plastics (NPs), which are useful for the study of interactions with biological systems and toxicity studies, were artificially prepared by laser ablation. Nano-sized particles were synthesized by irradiating a 50 μm thick Low-density Polyethylene (LDPE) film with ultraviolet (266 nm) nano-second laser beams at an irradiation fluence of 40 mJ/cm2, a beam area of 0.023 cm2 and a repetition rate of 10 Hz to locally break the σ bonds. The LDPE film was placed in a cell filled with ultra-pure water in an environment as free as possible from solvent residues and surfactants. The particles generated by nano-second laser ablation were evaluated by a DLS particle size, zeta potential, and molecular weight measurement system. The shape of the nanoparticles was also confirmed by field emission scanning electron microscopy (FE-SEM). The particle size measurement by DLS confirmed the formation of 180–800 nm particles after 0.5–12 h of laser irradiation. The observation of the particle shape by FE-SEM showed not only independent particles, but also some agglomerated states. The application of laser ablation is shown to be an effective method for the generation of nano-sized plastic particles which can serve as model samples for ecological interactions and toxicity studies. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.