MICROPHASE STRUCTURE AND CALCULATIONS OF THE INTERPHASE IN POLY(STYRENE-B-METHYLPHENYLSILOXANE) DIBLOCK COPOLYMERS - A COMPARATIVE-STUDY FROM SMALL-ANGLE X-RAY-SCATTERING, ELECTRON SPECTROSCOPIC IMAGING AND SOLID-STATE NUCLEAR-MAGNETIC-RESONANCE

The microphase structure of a series of poly(styrene-b-methylphenylsil oxane) (PS-b-PMPS)-diblock copolymers with various compositions and mo lecular weights has been studied by small-angle X-ray scattering, elec tron spectroscopic imaging and solid-state nuclear magnetic resonance spectroscopy. This diblock copolymer system is miscible within a disti nct range of temperature and molecular weight exhibiting an upper crit ical solution temperature. The three chosen methods which complement e ach other can be applied to the chemically un modified model system. T he results of the various measurements correlate to describe the micro phase structure, the domain size and the interphase.