The method showed promising results compared with conventional methods . the second part : we mainly reported the synthesis of some chemical reagents such as palladiumphthalocyanine , palladium 4 , 4 ' , 4 " , 4 ' " - tetranitrophthalo - cyanine , pvp - chitosan grafting copolymer , n - propyl carboxylate , propionic esters ( 2 )在第6章利用pvp優(yōu)良的生物相容性,將其接枝到甲殼糖分子鏈,以改善甲殼糖作為組織工程材料應(yīng)用的不足之處。