Synthesis and characterization of carboxylated PBAMO copolymers as promising prepolymers for energetic binders

Lim, Myung-Seop; Bu, Meilan; Jang, Yoorim; Jeong, Jongoh; Noh, Seok Kyun; Rhee, Hakjune

doi:10.1039/c9ra09881j

Cited by 11 publications

(18 citation statements)

References 33 publications

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“…Copolymers of BAMO with carboxylated BAMO derivatives were similarly synthesised—20% of the poly(BAMO) chain was replaced with long-chain carboxylates—butanoate, octanoate and decanoate [ 63 ]. Carboxylated BAMO copolymers were synthesised by adding sodium azide and potassium carboxylate to poly(BCMO).…”

Section: Curing and Modification Of Energetic Oxetane Polymers And Co...mentioning

confidence: 99%

Energetic Polyoxetanes as High-Performance Binders for Energetic Composites: A Critical Review

2022

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Energetic oxetanes, a group of energetic binders (EBs), are the focus of this review. We briefly introduce the role of binders and the difference between EBs and traditional “non-energetic” polymer binders, followed by a discussion of the synthesis and key properties of polyoxetanes. Priority is given to recent works, but a long-term perspective is provided where necessary, to illustrate the development of this field and the most relevant emerging trends. New reports on methods of obtaining oxetane polymers are presented; concerning the possibility of using a new catalyst, water: Al(C4H9)3, or the ratio of comonomers on the properties of the obtained binders. The synthesis of copolymers with the use of polymers with an oxetane ring and polyethers, polybutadiene terminated with hydroxyl groups and poly (3-difluoroaminomethyl-3-methyloxetane) is discussed. The latest developments in crosslinking reactions and crosslinking agents used are also described. The primary challenges faced by the field are identified and a perspective on the future development of polyoxetane EBs is presented.

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Section: Curing and Modification Of Energetic Oxetane Polymers And Co...mentioning

confidence: 99%

Energetic Polyoxetanes as High-Performance Binders for Energetic Composites: A Critical Review

2022

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“…60,61 Considering the migration of plasticizers, functional groups were gradually drawn into the polymers to modify their intermolecular force. 27,30 The literature statistics are listed in Table 2 to offer more intuitive data to analyze.…”

Section: Two Dimensionmentioning

confidence: 99%

“…[21][22][23][24][25] On the other hand, flexible side chains were considered to improve the intermolecular force from the twodimensional perspective instead of linear structure limited. [26][27][28] Generally, two common strategies exist to introduce side chains. One method is to introduce side chains into the monomers to polymerize.…”

Section: Introductionmentioning

confidence: 99%

“…Considering these drawbacks, energetic thermoplastic elastomer (ETPE) with block polymer enables component recovery owing to its viscosity sensitivity to temperature 21–25 . On the other hand, flexible side chains were considered to improve the intermolecular force from the two‐dimensional perspective instead of linear structure limited 26–28 . Generally, two common strategies exist to introduce side chains.…”

Section: Introductionmentioning

confidence: 99%

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A review: Multidimensional internal plasticization of molecular structure in energetic polymer

Zheng

et al. 2022

J of Applied Polymer Sci

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In the field of propellant and polymer-bonded explosives (PBX), energetic polymers may bring poor mechanical properties for bulky groups and polarity. To get rid of the defects, plasticizers with low molecular weight can enhance the flexibility and processability of propellants through monotonous mixing. However, the migration of plasticizers over time may severely disrupt the mechanical property of energetic polymers. In contrast to general plasticization, internal plasticization can regulate flexibility from the perspective of molecular structure. In this context, this review focuses on the internal plasticization of energetic polymers from different dimensions. Hopefully, this review can provide some inspiration for designing energetic polymers to optimize the mechanical properties from various dimensions and integrate them for further research.

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“…The copolymer also exhibits good compatibility with the most commonly applied components in propellants [13]. During the past decades, synthesis, characterization, thermal decomposition and combustion characteristics of p(BAMO)-b-GAP have been reported [14][15][16][17][18][19]. In this study, the enthalpy of formation of p(BAMO)-b-GAP was first investigated by two methods.…”

Section: Introductionmentioning

confidence: 99%

Enthalpy of Formation of p(BAMO)‐b‐GAP and Energetic Characteristics of Solid Propellants Based on the Copolymer

Chen

et al. 2021

Propellants Explo Pyrotec

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The block copolymer of 3,3'-bis(azidomethy) oxetane and glycidyl azide polymer (p(BAMO)-b-GAP) is an ideal energetic binder for solid propellants. In this work, the enthalpy of formation of p(BAMO)-b-GAP was first investigated by the heat of combustion experimental method and group additivity method. Meanwhile, the energetic characteristics of solid propellants based on the copolymer were systematically calculated. The results proved that the Δ f H of p(BAMO)-b-GAP could be estimated accurately by two methods and the positive Δ f H values were obtained. Dual-oxidant formulas were designed in which AP was re-placed gradually by some chlorine-free high-energy materials. The calculation results showed when AP was gradually replaced by RDX or HMX, the energy level of propellants based on p(BAMO)-b-GAP was improved first but then decreased with AP content further decreased, indicating there was an optimum ratio between AP and its alternative. However, when AP was replaced by CL-20 or ADN, the values of I sp were improved steadily. When less than 40 % AP was replaced, the contribution to the energy level of propellant by RDX or HMX was even more than that by CL-20.

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Synthesis and characterization of carboxylated PBAMO copolymers as promising prepolymers for energetic binders

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.

Cited by 11 publications

References 33 publications

Energetic Polyoxetanes as High-Performance Binders for Energetic Composites: A Critical Review

Energetic Polyoxetanes as High-Performance Binders for Energetic Composites: A Critical Review

A review: Multidimensional internal plasticization of molecular structure in energetic polymer

Enthalpy of Formation of p(BAMO)‐b‐GAP and Energetic Characteristics of Solid Propellants Based on the Copolymer

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