The phase structure consisting of mm-sized domains has been found in the blend films of two types of
at-poly (vinyl alcohol) s with 99 and 89 mol% of the degrees of saponification, named samples A
o and B
o, respectively, around a 40/60 (=A
o/B
o (wt/wt)) blend composition. The domains strongly contacted with their surrounding matrix against mechanically applied force. However, the domains B
o-rich could become an empty hole by soaking the film in water. These results indicate possibility of producing porous films from the phase separated blend films.
抄録全体を表示