| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.329 |
| 발표분야 | 고분자 합성 |
| 제목 | Synthesis of azide-terminated glycidyl azide polymer having low molecular weight |
| 초록 | Since early 1980s, glycidyl azide polymer (GAP), polyether-typed polymer, prepared by cationic ring-opening polymerization has been of interest because solid composite rocket propellants prepared using GAP as a prepolymer of binder can release energy of about 85kcal/mol more by the azide group (-N3) in polymer chain. However, it has been known that GAP-based propellants don't exhibit excellent mechanical properties. Reportedly, the mechanical properties can be enhanced through the incorporation of oligomer-typed GAP having low molecular weight as an energetic plasticizer. Moreover, the burning rate of propellant can be accelerated. A synthesis of azide-terminated glycidyl azide polymer, A-GAP, was carried out by tosylation and azidation of polyepichlorohydrin (PECH) prepared by cationic ring-opening polymerization. Polyepichorohydrin was prepared by cationic cativated monomer polymerization using ethylene glycol and BF3OEt2 as an initiator and a catalyst at ~10oC. Tosylation of polyepichorohydrin was performed using traditional para-toluenesulfonyl chloride (TsCl) /pyridine method and was also carried out using TsCl/amine catalysts to reduce the reaction time significantly. Azidation of tosyl-terminated PECH was performed using NaN3 as an azidation reagent in DMF solvent at high temperature and was unexpectedly completed within 2 hours. |
| 저자 | 민병선, 임유진 |
| 소속 | 국방과학(연) |
| 키워드 | Cationic ring-opening polymerization; Activated monomer mechanism; Tosylation; Azidation |
