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제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Iron-Catalyzed Direct Azidation of Polybutadiene and Consecutive Click-Reaction

등록일
2017년 8월 3일 13시 51분 33초
접수번호
0193
발표코드
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발표시간
10월 20일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
Polymer Chemistry
저자 및
공동저자
Haeji Jung, Yeong Gweon Lim*
Agency for Defense Development, Korea
Azides have been widely utilized as precursors leading to formation of amines and synthesis of nitrene. Therefore organic azides have played important role in various scientific fields. Numerous synthetic protocols and applications have been developed, but there are a few reports describing the direct azidation of polymer. Recently, several groups obtained azido-functionalized polymer by using combination of trimethylsilyl azide and iodine compound through single-step substitution reaction. In this work, the research on synthesis of azidated phenyl-terminated polybutadiene(PtPB) introduced azide groups to alkenes was described. Polybutadiene is appropriate for prepolymer applied to binder of composite propellants due to their excellent mechanical properties, sufficient desensitization toward impact and friction, and good low-temperature elongation. To improve the weakness of polybutadiene such as non-energetic polymer, introduction of azide groups into PB was conducted. Synthesis of three different types of azidated PtPB having 5, 10, 15% substitution rates was established by iron-catalyzed radical reaction under optimized reaction conditions. Moreover, resulting azido-functionalized PtPBs were reacted with alkyne to obtain the triazole-containing polymer.

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