Infrared Spectroscopic Characterization by Atomic Force Microscopy of Two Model Nano-Samples of Low-Density Polyethylene Designed by Laser Ablation and Ultraviolet/Ultrasound

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design Pub Date : 2025-03-06 DOI:10.1016/j.matdes.2025.113804

Ikuna Kanehara , Naoto Washihira , Tatsuhiro Nagasaka , Hirofumi Seki , Sho Fujii , Tsuyoshi Kimura , Masaya Yamamoto , Tadao Tanabe

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Abstract

Model plastic samples mimicking the behavior of environmental nanoparticles (NPs) are necessary for understanding their biological effects. This is because the particle size and surface chemistry of plastic particles can be parameters for biotoxicity testing. Therefore, different types of particles need to be produced or designed. In this study, the chemical and physical properties of two model nano-samples of Low-Density Polyethylene (LDPE) were investigated; one designed by nanosecond laser ablation (LASER-LDPE.NPs), and the other designed by a combination of Ultraviolet (UV) irradiation and Ultrasound (US) exposure (UV/US-LDPE.NPs). AFM-IR, for detecting and imaging the response of a sample by scanning an AFM cantilever while irradiating an IR laser, was used to analyze the local chemical properties of these particles. New peaks specific to oxidation and degradation reactions were observed. In addition, the LASER-LDPE.NPs tend to have greater oxidation behavior with increasing methyl groups and a greater degradation with increasing carbonyl index than UV/US-LDPE.NPs. It was found that each NP production process produces NPs with unique chemical and physical properties. These designed model plastic particles mimic NPs in the environment and a study of their respective oxidation and degradation properties is expected to provide new insights into the assessment of biological effects. (200 words)

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来源期刊

Materials & Design Engineering-Mechanical Engineering

CiteScore

14.30

自引率

7.10%

发文量

1028

审稿时长

85 days

期刊介绍： Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry. The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.