ZHANG Liuzhen, XU Yujie, LIU Min, et al. Preparation and characterization of chitosan with low molecular weight and high degree of deacetylation[J]. Journal of Radiation Research and Radiation Processing, 2009,27(3):177-181.
ZHANG Liuzhen, XU Yujie, LIU Min, et al. Preparation and characterization of chitosan with low molecular weight and high degree of deacetylation[J]. Journal of Radiation Research and Radiation Processing, 2009,27(3):177-181.DOI:
The elution with sodium hydroxide was used to increase deacetylation (DD) degree of chitosan and ,60,Co γ-irradiation was applied to decrease its molecular weight. The change of chitosan’s degree of deacetylation (DD) was determined by linear potentiometric titration, and the change of molecular weight was measured by Ubbelohde Viscometer. Fourier transform infrared spectrometer was utilized to characterize and analyze the products. The result indicates that sodium hydroxide elution could increase deacetylation (DD) degree of chitosan efficiently and ,60,Co γ-rays irradiation could decrease its molecular weight remarkably. The products may be satisfied with the preparation of new nano-chelating agents.
关键词
壳聚糖脱乙酰度分子量红外光谱
Keywords
ChitosanDegree of deacetylation (DD)Molecular weightIR