Grazing-incidence small-angle X-ray scattering studies on templating nanopores in networked polymer thin films with a multi-armed porogen

The mechanism of thermal pore generation in organosilicate thin films loaded with a six-armed star-shaped poly(epsilon-caprolactone) porogen was quantitatively investigated by using in-situ grazing-incidence small-angle X-ray scattering and thermogravimetry. These analyses found that the blend components have a limited miscibility that depends on the compositionfor porogen loadings up to only 20 wt%, molecularly miscible blend films were obtained. Even for the miscible blend films, heating the films produced a curing reaction of the precursor matrix component, leading to the phase separation of the porogen component. This phase separation was found to begin at 393 K for 10 wt% porogen loaded films and at 373 K for 20 wt% porogen loaded films, and to continue for temperatures up to 423 K. The porogen aggregates remained and were confined within the matrix film without any further growth or movement until complete thermal decomposition above 564 K.ope

Probing the Self-Assembled Polymer Nanostructures with Synchrotron Grazing Incidence X-Ray Scattering

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A Rodlike Polymer with Various Side Chain Lengths and Its Ability to Align Liquid-Crystals

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High Temperature Aromatic Polyimides Derived from 2,2'-Bis(Trifluoromethyl)-benzidine: Synthesis Structure and Properties

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Quantitative Analysis on Polymer Segmental Orientations and Surface Topography in Rubbing and Photoreacted Polyimide Films and Their Interactions with Liquid Crystal Molecules

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Current Status of PAL’ 3rd Generation Synchrotron Facility and Construction Plan of 4th Generation FEL Facility

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Factors Governing Liquid Crystal Alignment on Rubbed Polymer Films: Perpendicular and Parallel Liquid Crystal Alignment Behaviors

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Measurement of Dielectric Parameter for Films at Microwave Frequency

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Structural evolution in ultra-low dielectric thin films: in-situ GISAXS measurement

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New Photoalignable Polyimides and Their Ability to Control Liquid-Crystal Alignment

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