Preparation and sun screening performance of quaternary ammonium salt of p-methoxycinnamoyl chitosan derivatives

p-Methoxycinnamoyl chitosan derivative(MOC-CS) was synthesized by formation of amide linkages between p-methoxycinnami acid and chitosan(CS).The quaternary ammonium salt of p-methoxycinnamoyl chitosan(QMOC-CS) was prepared by further quarternarizing MOC-CS with N-(3-chloro-2-hydroxypropyl) trimethylammonium chloride.The structure of QMOC-CS was characterized by IR and 1HNMR.The properties of QMOC-CS were studied by UV-Vis spectrophotometer,florescence spectrophotometer and SEM.Results showed that the solubility of QMOC-CS is 1.3 g(in 100 g H2O);maximum adsorption of QMOC-CS on hair is 5.38 mg/g;QMOC-CS has the capacity for protection of UV irradiation on hair.