New Elastomer Synthesis for High Performance Applications

acrylate analysis Anionic Polymerization benzene block copolymers butyllithium carboxylate Chem chromatography copolymer elastomers crystallization curves cyclohexane DDPE degree of phase Dianion diblock difunctional initiators distilled DMTA elastomeric elongation emulsion polymerization Figure formation FT-IR g/mol glass transition hard domains hard segment content hard-segment content higher homopolymer hydrogen bonding hydrolysis increased indicated interdomain spacing interfacial thickness investigated ion-containing block ionic ionomers isoprene J. E. McGrath kinetic lithium Living Polymerization Macromolecules materials MDI-based mechanical behavior melting methacrylate modulus molecular weight monoadduct monomers observed obtained organolithium peak PEUU's phase separation polar additives poly(TBS polydiene polyether polyisoprene polymer Polymer Preprints polyurea polyurethane prepolymer purified reaction reactive relaxation room temperature rubber rubbery plateau sample sec-butyl sec-butyllithium segmented copolymers soft segments soft-segment soluble solvent stress-strain studies styrene sulfonated sulfonated styrene synthesis tensile tertiary alcohols thermal thermoplastic elastomers urea urea linkages utilized weight percent x-ray