• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Continuous synthesis of spherical colloidal amorphous and its application for ultraviolet ray screening materials

Research Project

Project/Area Number 21H01633
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26030:Composite materials and interfaces-related
Research InstitutionYokohama National University

Principal Investigator

Kanai Toshimitsu  横浜国立大学, 大学院工学研究院, 教授 (10442948)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
Keywordsコロイドアモルファス / マイクロ流体デバイス / 紫外線遮蔽剤
Outline of Research at the Start

本研究では、マイクロ流体デバイスを用いて新規な球状コロイドアモルファスを作製し、紫外線遮蔽剤としての応用を検討する。従来よりも小さなコロイド粒子を用い、粒子濃度や屈折率の調整により、可視光領域は透過し、紫外線領域は遮断する、角度依存性のない紫外線遮蔽剤の実現を目指す。

Outline of Final Research Achievements

We demonstrated that monodisperse spherical particles consisting of silica particles could be continuously synthesized by reacting monodisperse sodium silicate solution droplets, which generated in a microfluidic device, with ethanol. In addition, monodisperse elastomer particles including monodisperse PMMA particles could be prepared by microfluidic technique. The particles showed a broad reflection peak at approximately 400 nm, and hence, they had potential for application as ultraviolet ray screening materials.

Academic Significance and Societal Importance of the Research Achievements

本研究は、従来の紫外線吸収ではなく、コロイド結晶やコロイドアモルファスといったコロイド粒子の周期配列に基づく紫外線の反射や散乱による、フリーラジカルが発生しない安心・安全な紫外線遮蔽方法の可能性を示した。またマイクロ流体デバイスを用いてシリカ粒子が集積した球状粒子を短時間で効率よく連続的に合成できることを見出し、マイクロ化学プロセスの有用性を示した。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi