The Study on physical analyze and Rheological of water-soluble Chitosan Solutions

• Main Authors: Wen-Yan Lin, 林文雁
• Other Authors: 芮祥鵬
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/3r7z4h

博士 === 國立臺北科技大學 === 有機高分子研究所 === 100 === Chitosan with well-characterized biological properties natural polymer，The biodegradation, biocompatibility, and nontoxic. Chitosan (chitison) Chitin deacetylation (Deacetylated),an important application of polymer biomaterials , butinsoluble in water only soluble in acid , such as formic acid , acetic acid and lactic acid，thus making the development of chitosan to be limited. . In this study, chitosan was synthesized with Glycidyltrimethylammonium Chloride The dynamic viscoelastic property of water-soluble GTMAC chitosan and water-insoluble chitosan were measured by oscillation rheometer (VE System) . A simple Maxwell Model accurately describes a regular chitosan (CS) solution. The G’, G” crossover shifted toward lower frequencies as the CS concentration increased. A modified Maxwell Model. Interestingly, the crossover of G’ and G” was found to be independent of the GTMAC chitosan concentration,Further calculated the overlap concentration, C*. Finally,Studies have also reported that the rheological behavior of GTMAC chitosan depends on the polymer concentration、 ionic strength and the temperature, to understand their physical properties from experimental data concentration.