The thickness of the cast-film was about 50-100um which was far greater than the mean gyration radius of chains of PVME(5. 17nm) and SAN(8. 62nm).

• 溶剂剂浇铸膜的厚度大约为50-100nm，它远远大于PVME；SAN分子链的均方回转半径5.；17nm，8