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Synthesis and characterization of hydroxyl terminated poly(butadiene)-g-poly(glycidyl azide) copolymer as a new energetic propellant binder

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Summary

Poly(glycidyl azide), PGA, was grafted onto Hydroxyl Terminated Poly(butadiene), HTPB, via free radical mechanism. PGA-macro azoinitator and HTPB polymer mixture was casted from solution and the polymer film was kept at 90°C for 4 hours. The grafted polymer was isolated from the product by fractional precipitation and characterized by NMR and FT-IR spectroscopy. Graft copolymer structure was also confirmed that volume ratio of nonsolvent to the solution of the graft copolymer was between those of corresponding homopolymers. TGA traces of the block polymers were containing two different maxima at 253°C (for PGA units) and 469°C (for HTPB units). Because of the incompatibility of the blocks, DSC curve showed two Tg's which belong to the related segments.

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Authors and Affiliations

  1. Research Institute for Basic Sciences, Department of Chemistry, TÜBITAK-Marmara Research Center, P.O. Box 21, 41470, Gebze, Turkey

    Mehmet S. Eroglu & Baki Hazer

  2. Department of Chemistry, Karadeniz Technical University, 61080, Trabzon, Turkey

    Baki Hazer

  3. Department of Chemistry, Hacettepe University, 06532 Beytepe, Ankara, Turkey

    Olgun Güven

Authors
  1. Mehmet S. Eroglu
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  2. Baki Hazer
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  3. Olgun Güven
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Eroglu, M.S., Hazer, B. & Güven, O. Synthesis and characterization of hydroxyl terminated poly(butadiene)-g-poly(glycidyl azide) copolymer as a new energetic propellant binder. Polymer Bulletin 36, 695–701 (1996). https://doi.org/10.1007/BF00338632

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  • DOI: https://doi.org/10.1007/BF00338632

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