Original Article
  • Evaluation of Structural Changes and Dispersibility of Boron Nitride Nanotubes under Different Ultrasonication Conditions

  • Da Bin Cheon*, Won Jung Choi**, Seung Hwa Yoo*,**†

  • * Department of Applied Plasma & Quantum Beam Engineering, Jeonbuk National University, Jeonju 54896, Korea
    ** Department of Quantum System Engineering, Jeonbuk National University, Jeonju 54896, Korea

  • 초음파 처리 조건에 따른 질화붕소나노튜브 구조 변화 및 분산성 평가

  • 천다빈*· 최원정**· 유승화*,**†

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Boron nitride nanotubes (BNNT) are materials of significant interest in next-generation technological fields due to their outstanding physicochemical properties, including excellent chemical and thermal stability. However, for effective utilization, dispersion of BNNT is essential. Unfortunately, BNNT exhibit hydrophobic surfaces and strong van der Waals forces, making their dispersion challenging. Current dispersion methods include the addition of surfactants and surface functionalization, but these chemical treatments often damage BNNT and involve cumbersome processes. In this study, we dispersed BNNT in water under various tip ultrasonication conditions and identified conditions that do not affect BNNT using FT-IR spectroscopy, Raman spectroscopy, and X-ray diffraction analysis. Subsequently, enhanced dispersibility was confirmed through turbidity measurements, and the solubility range in 15 different solvents was evaluated using the Hansen solubility parameter.


질화붕소나노튜브(boron nitride nanotubes, BNNT)는 우수한 화학적 및 열적 안정성 등의 뛰어난 물리화학적 특성을 지녀 차세대 기술 분야에서 주목받는 소재이다. 이를 활용하기 위해서는 분산이 필수적이나, BNNT의 소수성 표면 및 반데르발스 응집력으로 인하여 분산이 어렵다는 단점이 있다. 현재까지 연구된 분산 방법으로는 계면활성제 첨가, 표면기능화 등이 있으나, 이러한 화학적 처리는 대부분 BNNT에 손상을 입히며 번거로운 공정이 포함된다. 이에 본 연구에서는, tip 초음파 처리 시간 조건별로 BNNT를 물에 분산시키고 FT-IR spectroscopy, Raman spectroscopy, X-ray diffraction, Scanning electron microscopy 분석 등을 통해 BNNT에 영향을 미치지 않는 tip 초음파 처리 조건을 파악하였다. 이후, 탁도를 통해 향상된 분산성을 확인하였으며 Hansen solubility parameter를 통해 15가지의 용매에서 용해도 범위를 평가하였다


Keywords: 질화붕소나노튜브(Boron nitride nanotubes), 분산(Dispersion),초음파 처리(Ultra sonication), 한센 용해도 매개변수(Hansen solubility parameter)

This Article

Correspondence to

  • Seung Hwa Yoo

  • * Department of Applied Plasma & Quantum Beam Engineering, Jeonbuk National University, Jeonju 54896, Korea
    ** Department of Quantum System Engineering, Jeonbuk National University, Jeonju 54896, Korea

  • E-mail: seunghwayoo@jbnu.ac.kr