| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
A synergy between ultrasonication and the polymer matrix in the size reduction of molecular explosive crystals |
| 초록 |
In the field of explosives, it is significant to lower the sensitivity to prevent unintended initiation by external mechanical stimuli. Nanocrystals of explosives do not contain impurities, and thus ensure low-sensitivity. Also, crystallization in a polymer matrix is advantageous on reducing the size and sensitivity. We apply the ultrasonication and/or polymer matrix medium with quenching for crystallization. Crystallization without ultrasonication or polymer matrix results in crystals of ~50um, meanwhile, performing both of ultrasonication and polymer matrix produces crystals of ~30nm. Thus, we infer that there is a synergy between ultrasonication and the polymer matrix in reducing crystals size. Since polymer matrix limits the spatial growth of cavitation bubble induced by ultrasonication and this limitation leads to a premature bubble implosion. In other words, the polymer matrix enhances ultrasonication effect on the nucleation. |
| 저자 |
이수진1, 김정욱1, 이은지2, 고은희3, 권국태4, 신관우1, 이주미1
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| 소속 |
1서강대, 2광주과학기술원 신소재공학부, 3충남대, 4국방과학(연) |
| 키워드 |
crystallization; polymer matrix; ultrasonication; molecular explosive
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| E-Mail |
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