The degree of ionization of polyacrylic acid and pure sodium polyacrylate solutions covering a wide concentration range was deteremined by measuring the pH values of these solutions.The results show that the degrees o...
trans 1,4 Polybutadiene(PTBD) was synthesized by rare earth catalyst system. The effect of electron radiation on phase transition from monoclinic phase to hexagonal phase was observed by TEM. Electron diffraction patt...