title: Synthesis of dehydroabietic acid-modified chitosan and its drug release behavior.
abstract: A new type of chitosan derivative, dehydroabietic acid-modified chitosan (DAMC), was synthesized by the acylation reaction of chitosan with dehydroabietic acid chloride (DHAC) under microwave irradiation. The resulting product (DAMC) was characterized by FT-IR, UV, (1)H NMR, X-ray diffraction (XRD), scanning electron microscopy (SEM), thermal gravimetric analysis (TGA), and elemental analysis. The degree of substitution (DS) of DAMC was 16.5%. And chitosan and DAMC were used as carriers of fenoprofen calcium (FC), and their controlled release behavior in artificial intestinal juice was studied. The results showed that the controlled release of FC from the carrier of DAMC is better than that from original chitosan.
authors.affiliation: School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxue Road, Nanning, Guangxi 530004, People's Republic of China. wgduan@gxu.edu.cn
authors.forename: Wengui
authors.initials: W
authors.lastname: Duan
authors.forename: Changmao
authors.initials: C
authors.lastname: Shen
authors.forename: Huaxiang
authors.initials: H
authors.lastname: Fang
authors.forename: Guang Hua
authors.initials: GH
authors.lastname: Li
mesh_terms: D045784:Abietanes / Q000737:chemistry*; D048271:Chitosan / Q000138:chemical synthesis* / Q000737:chemistry*; D016503:Drug Delivery Systems; D005279:Fenoprofen / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D045784:Abietanes; C013913:dehydroabietic acid; D048271:Chitosan; D005279:Fenoprofen