Synthesis and characterization of carboxylated PBAMO copolymers as promising prepolymers for energetic binders
- Title
- Synthesis and characterization of carboxylated PBAMO copolymers as promising prepolymers for energetic binders
- Author
- 이학준
- Issue Date
- 2020-03
- Publisher
- Royal Society of Chemistry
- Citation
- RSC ADVANCES, v. 10, no. 15, page. 8967-8972
- Abstract
- The carboxylated poly[3,3-bis(3-azidomethyl)oxetane] (PBAMO) copolymers (poly(BAMO-carboxylate)) were synthesized by substitution of poly[3,3-bis(3-chloromethyl)oxetane] (PBCMO) with potassium carboxylate and sodium azide in DMSO. The synthesized compounds were characterized using various analytical techniques, such as Fourier-transform infrared (FT-IR) spectroscopy, inverse-gated decoupling 13C-nuclear magnetic resonance (13C NMR) spectroscopy, gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), calorimetry, friction, and impact sensitivity analysis. These poly(BAMO-carboxylate) compounds have better thermal properties, with lower glass transition temperatures (ranging from −43 °C to −51 °C) than PBAMO (−37 °C) and higher thermal decomposition temperatures (233–237 °C) than PBAMO (211 °C). Moreover, poly(BAMO0.80-octanoate0.20) and poly(BAMO0.78-decanoate0.22) have higher heats of combustion (5226 and 5665 kJ mol−1, respectively) and negative formation enthalpies (−0.17 and −0.55 kJ g−1, respectively), while PBAMO has lower heat of combustion (3125 kJ mol−1) and positive formation enthalpy (0.06 kJ g−1). The poly(BAMO-carboxylate) compounds have higher values (38–50 J) than that of PBAMO (14 J) in the impact sensitivities. This is a valuable study for improving the properties of PBAMO, which is a high energetic polymeric binder but difficult to handle because of its sensitivity. Therefore, poly(BAMO-carboxylate) could be a good candidate as a prepolymer for designing the energetic polymeric binder.
- URI
- https://pubs.rsc.org/en/content/articlelanding/2020/RA/C9RA09881J#!divAbstracthttps://repository.hanyang.ac.kr/handle/20.500.11754/163086
- ISSN
- 2046-2069
- DOI
- 10.1039/c9ra09881j
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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