Macroscopic Property Evaluation of Titania Nanocomposite Polymer Capable of Drawing Double-Network Macrostructure Using Photolithography.

Autor: Ikake H; Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, 1-8-14 Kandasurugadai, Chiyoda-ku, Tokyo 101-8308, Japan., Hara S; Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-6-1, Kanagawa-ku, Yokohama 221-8686, Japan., Kubodera M; Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, 1-8-14 Kandasurugadai, Chiyoda-ku, Tokyo 101-8308, Japan., Kato H; Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, 1-8-14 Kandasurugadai, Chiyoda-ku, Tokyo 101-8308, Japan., Fukasawa K; Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, 1-8-14 Kandasurugadai, Chiyoda-ku, Tokyo 101-8308, Japan., Takeoka Y; Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-6-1, Kanagawa-ku, Yokohama 221-8686, Japan., Ikehara T; Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-6-1, Kanagawa-ku, Yokohama 221-8686, Japan., Shimizu S; Department of Materials and Applied Chemistry, College of Science and Technology, Nihon University, 1-8-14 Kandasurugadai, Chiyoda-ku, Tokyo 101-8308, Japan.
Jazyk: angličtina
Zdroj: ACS macro letters [ACS Macro Lett] 2023 Jul 18; Vol. 12 (7), pp. 943-948. Date of Electronic Publication: 2023 Jun 29.
DOI: 10.1021/acsmacrolett.3c00230
Abstrakt: In this study, we developed a double-network hybrid polymer that controls the strength and density of cross-linking points by utilizing the bonds of titania and catechol groups with an o -nitrobenzyl group (ONBg) as the photoreactive cross-linking points. In addition, this hybrid material system, which is composed of thermally dissociable bonds between titania and carboxyl groups, can be molded before light irradiation. The Young's modulus increased by approximately 1000 times upon irradiation with UV light. Moreover, introducing microstructures using the photolithography technique improved the tensile strength and fracture energy by approximately 32 and 15 times, respectively, compared to the sample without the photoreaction. The improved toughness was achieved by the macrostructures, which enhanced the effective cleavage of sacrificial bonds between the carboxyl groups and titania.
Databáze: MEDLINE