Research Papers by Hiroaki Yoshimizu

The syndiotactic polystyrene membranes containing the δ-form which is a clathrated crystal with some solvent molecules as a guest and so-called “complex”, were prepared by casting from its toluene solution at 85°C and room temperature. In order to evaluate the thermal stability of the complex in the

Guest molecular dynamics related to the stable complexing behavior of syndiotactic polystyrene (sPS)xylene isomer (m- and p-xylene, abbreviated MX and PX) complexes have been characterized by solid-state 13C-NMR spectroscopy. Similar chemical shifts are observed for both sPS complexes in the 13C-CP/

It can be expected that a microwave acts as an accelerator of the mobility of polar functional groups such as hydroxyl groups in polymeric membranes, and then gas permeability improves because of the increasing free volume and/or temperature of the membranes. The permeability coefficients of CO2 for