Hydrogenated Star Block Copolymers of Butylstyrene — Isoprene and Divinylbenzene
Anionically prepared triblock and star block copolymers of styrene with butadiene and isoprene have been widely synthesized and thoroughly studied by many investigators.1 These systems have also provided a basis for many commercially important thermoplastic elastomers, including KRATON, SOLPRENE, etc. The thermal and mechanical sproperties of these materials are well established in their microphase-separated morphologies, which may be tailored, along with other polymer parameters, to achieve specific physical properties. Anionic polymerization allows the controlled synthesis of block polymers, and thus facilitates the precise engineering of mechanical properties, such as tensile strength and modulus by controlling parameters, such as block molecular weight, purity, and microstructure.
KeywordsDifferential Scanning Calorimetry Block Copolymer Dynamic Mechanical Thermal Analysis Microphase Separation Dynamic Mechanical Thermal Analysis
Unable to display preview. Download preview PDF.
- 1.A. Noshay and J. E. McGrath, “Block Copolymers: Overview and Critical Survey,” Academic Press (1977).Google Scholar
- 2.F. C. Schwab, Polymer Preprints, 25(2), 61 (1984); “Advances in Polymer Synthesis,” B. M. Culbertson and J. E. McGrath, Editors, Plenum, in Press 1985.Google Scholar
- 4.P. K. Das, J. M. Hoover, T. C. Ward, and J. E. McGrath, ssPolymer Preprints, 25(2), 96 (1984); P. K. Das, Ph.D. Thesis, Virginia Polytechnic Institute and State University, December 1984.Google Scholar
- 5.Chemical Equipment Corporation, Tulsa, OK., J. M. Hoover et al., to be published.Google Scholar
- 6.R. J. A. Eckert, U.S. Patent 4,156,673, (to Shell), May 29, 1979.Google Scholar
- 7.M. M. Sheridan, J. M. Hoover, T. C. Ward, and J. E. McGrath, Polymer Preprints, 26(1), 186 (1985).Google Scholar