| In this paper we summarized the research progress of viscosity behavior of polymer dilute solution and conformation of gelatin. Viscosity of gelatin solutions with concentrations between 10-4 and 10-5g/cm3 and different solution system were studied systematically via a high-precision photoelectric viscometer, covering the extremely dilute zones. Our main findings are as follows:The flow time of gelatin at different system was determined, getting the standard deviation of the flow time, the results showed that: gelatin solution was unstable in the concentration of dilute and extremely dilute range at 15.0℃. This may be due to coil-helix transformation of gelatin molecules resulting by electrostatic interactions between charged amino acids, hydrophobic interactions and hydrogen bonding between peptide bonds. The stability of gelatin can be enhanced by elevating temperature, adjusting pH |
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