The Influence of Hard Segment Crystallizability on the Structure and Properties of Block Copolyether-ester Elastomers |
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Contents
Copolyetherester Synthesis Sequence Length Distributions | 49 |
Investigations of the Crystallization Processes of PTMT | 136 |
Summary and Suggestions for Future Investigation | 181 |
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Common terms and phrases
1,1,2-trichloroethane 10°C/min of samples angle X-ray diffraction angle X-ray scattering annealing endotherm approximately compression molded samples cooled copolyesters copolyether-ester containing copolyether-esters copolymers crosslinks crystalline fraction crystalline weight fraction crystallized at room data for solvent decreases deformation Differential Scanning Calorimetry Dröscher DSC scans DSC traces dynamic mechanical electron density elongation function of crystallization glass transition temperature hard segment content hard segment crystallizability heating at 20°C/min heats of fusion homopolymer Hytrel Hz and 2°C/min increase influence of hard initial heating isophthalate lamellae loss modulus loss tangent mechanical properties melting endotherm melting point melting point depression molecular weight observed peak phase separation poly(tetramethylene polymer PTMI crystallization PTMI-rich PTMO PTMT crystallinity PTMT homopolymer recrystallization relaxation room temperature sequence length distribution shown in Figure Small angle X-ray solvent cast samples spherulites Stress-strain curves tensile testing terephthalate units thermoplastic elastomers Wide angle X-ray X-ray diffraction X-ray scattering profiles yield stress Young's modulus