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首页> 外文期刊>RSC Advances >Synthesis and characterization of carboxylated PBAMO copolymers as promising prepolymers for energetic binders
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Synthesis and characterization of carboxylated PBAMO copolymers as promising prepolymers for energetic binders

机译：羧化PBamo共聚物的合成与表征作为能量粘合剂的有前途预聚物

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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 ~(13) C-nuclear magnetic resonance ( ~(13) C 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(BAMO _(0.80) -octanoate _(0.20) ) and poly(BAMO _(0.78) -decanoate _(0.22) ) 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.
机译：通过取代聚[3,3-双（3-氯甲基）氧乙烷]（PBCMO）合成羧化聚[3,3-双（3-氮杂甲基）氧乙烷]（PBAMO）共聚物（POMO-羧酸盐））（PBCMO）用羧酸钾和DMSO中的叠氮化钠。用各种分析技术表征合成化合物，例如傅里叶变换红外（FT-IR）光谱，逆门控去耦〜（13）C核磁共振（〜（13）C NMR）光谱，凝胶渗透色谱（ GPC），热重分析（TGA），差示扫描量热法（DSC），量热法，摩擦和冲击敏感性分析。这些聚（Bamo-羧酸盐）化合物具有更好的热性能，具有较低的玻璃化转变温度（从Δ33℃到51℃）而不是PMBamo（α37℃）和更高的热分解温度（233-237°C ）比PMAMO（211°C）。此外，聚（BAMO _（0.80） - 乙酸酯_（0.20））和聚（BAMO _（0.78） - 二烷酸盐_（0.22））分别具有较高的燃烧热量（分别为5226和5665 kJ mol〜（？1））和阴性形成焓（Δ0.17和？0.55kJ g〜（β1），而PMMO燃烧热量较低（3125kJ mol〜（α1））和阳性形成焓（0.06kj g〜（？1 ）））。聚（Bamo-羧酸盐）化合物具有较高的值（38-50J），而不是PBAMO（14J）在抗冲敏中的影响。这是改善PMAMO性质的有价值的研究，这是一种高能的聚合物粘合剂，但由于其灵敏度而难以处理。因此，聚（Bamo-羧酸盐）可以是用于设计能量聚合物粘合剂的预聚物的良好候选者。

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