Project(2006CB606505) supported by the National Basic Research Development Program of China;Project(50333050) supported by the National Natural Science Foundation of China;Project(07DJ14002) supported by the Shanghai Fundamental Theory Program;Project(20020255010) supported by the Specialized Research Fund for the Doctoral Program of Higher Education
Dynamic viscoelastic properties of polyacrylonitrile(PAN)/DMSO/H2O solutions with different H2O contents were studied as a function of temperature.These PAN solutions gradually became gel with decreasing temperature.T...