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Spectroscopic, thermal, and mechanical characterization of carboxyl‐terminated polybutadiene‐based carbon black‐filled networks
Author(s) -
Eroğlu Mehmet S.,
Akilli M. Melih,
Güven Olgun
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19971010)66:2<355::aid-app16>3.0.co;2-x
Subject(s) - materials science , polybutadiene , elastomer , thermal stability , carbon black , thermogravimetry , polymer chemistry , fourier transform infrared spectroscopy , hydroxyl terminated polybutadiene , ultimate tensile strength , adhesive , composite material , chemical engineering , polymer , natural rubber , layer (electronics) , engineering , copolymer
Carbon black‐filled and unfilled carboxyl‐terminated polybutadiene (CTPB) networks were prepared by using two types of reactive systems at different reactive group ratios to be applied to the solid propellant motor case as a liner. For the preparation of CTPB networks, tris(2‐methyl‐1 aziridinyl)phosphine oxide (MAPO) and a mixture of liquid bisphenol A‐epichlorohydrin (Epikote‐828) and MAPO were used as two different reactive systems. The chemistry and thermal stability of the CTPB networks were followed by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry (TG) techniques, whereas mechanical and adhesive properties were tested by tensile measurements. The mixed reactive system caused a modification in the ultimate tensile stress and elongation‐at‐break properties, adhesive properties, and thermal stability of the CTPB networks. It was understood that this modification was due to the inter‐ and intramolecular bridge formation via the end‐linking reaction of Epikote‐828 with amine groups of the former network chains. The combination of MAPO with Epikote‐828 also imparted better peel and lap‐shear strength properties to the CTPB elastomers. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 355–366, 1997