The Fabrication of PVA Polymer Coated on the Surface of B<sub>4</sub>C Nanocomposite by High Energy Ball Mill

Young-Rang Uhm; Jae-Woo Kim; Jin-Woo Jung; Chang-Kyu Rhee

doi:10.4150/KPMI.2009.16.2.110

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고에너지볼밀을 이용한 PVA 고분자가 표면 코팅된 B₄C 나노복합재 제조: 엄영랑, 김재우, 정진우, 이창규
The Fabrication of PVA Polymer Coated on the Surface of B₄C Nanocomposite by High Energy Ball Mill: Young-Rang Uhm, Jae-Woo Kim, Jin-Woo Jung, Chang-Kyu Rhee; Journal of Korean Powder Metallurgy Institute 2009;16(2):110-114
DOI: https://doi.org/10.4150/KPMI.2009.16.2.110

¹한국원자력연구원 원자력재료연구부
²한국원자력연구원 원자력재료연구부
³한국원자력연구원 원자력재료연구부
⁴한국원자력연구원 원자력재료연구부
¹Division of Nuclear Materials Research, Korea Atomic Energy Research Institute (KAERI)
²Division of Nuclear Materials Research, Korea Atomic Energy Research Institute (KAERI)
³Division of Nuclear Materials Research, Korea Atomic Energy Research Institute (KAERI)
⁴Division of Nuclear Materials Research, Korea Atomic Energy Research Institute (KAERI)

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Abstract

Mechanical coating process was applied to form 89 %-hydrolyzed poly vinyl alcohol (PVA) onto boron carbide (B_4C) nanopowder using one step high energy ball mill method. The polymer layer coated on the surface of B4C was changed to glass-like phase. The average particle size of core/shell structured B_4C/PVA was about 50 nm. The core/shell structured B_4C/PVA was formed by dry milling. However, the hydrolyzed PVA of 98sim99% with high glass transition temperature (T_g) was rarely coated on the powder. The T_g of polymer materials was one of keys for guest polymer coating on to the host powder by solvent free milling.

Keywords: Core/shell structured B_4C/PVA;Nano composite;

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