The New Positively Charged Asymmetric Membrane for Concentrating Gelatin Solution: the Effect of Evaporation Time and the Concentration of the LiCl Additive on the Intercepting Rate of Gelatin

• 新型荷正电非对称膜浓缩明胶水溶液:蒸发时间和添加剂LiCl浓度对明胶截留率的影响