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具有不同明胶浓度的明胶/1-烯丙基-3-甲基咪唑氯盐溶液是使用离子液体1-烯丙基-3-甲基咪唑盐[AMIM]Cl作为溶剂制备的。明胶离子液体溶液的流变性能由稳态剪切和振荡剪切测量研究。在稳态剪切测量中,所有的明胶溶液在低剪切速率下都表现出剪切变稀行为,我们认为这反映了[AMIM]Cl的溶剂特性。在振荡剪切测量中,确定了浓度和温度对溶液粘弹性的影响。结果表明,明胶溶液的储能模量G’在所有频率下与明胶浓度和温度的变化基本无关,而溶液的黏度在很大程度上取决于聚合物的浓度和温度。损耗模量G’’随着浓度的增加而增加,随着温度的上升而降低。这表明,弹性和耗散行为的原理是完全不同的。溶解明胶对溶液弹性的影响似乎较小。
Gelatin / 1-allyl-3-methylimidazolium chloride salt solutions with different gelatin concentrations were prepared using the ionic liquid 1-allyl-3-methylimidazolium chloride [AMIM] Cl as the solvent. The rheological properties of gelatin ionic liquid solutions are studied by steady-state shear and oscillatory shear measurements. In steady-state shear measurements, all gelatin solutions exhibit shear thinning behavior at low shear rates, which we believe reflect the solvent properties of [AMIM] Cl. In the oscillatory shear measurement, the effect of concentration and temperature on the viscoelasticity of the solution was determined. The results show that the storage modulus G ’of gelatin solution has almost no relation with the change of gelatin concentration and temperature at all frequencies, and the viscosity of the solution depends largely on the concentration and temperature of the polymer. The loss modulus G "increases with increasing concentration and decreases with increasing temperature. This shows that the principles of elastic and dissipative behavior are quite different. The effect of dissolved gelatin on solution elasticity appears to be small.