生物膜是一个多脂组份系统,前人的工作是利用PAT测量生物膜的模型系统的结构相变,都采用单脂或双脂组份的磷脂脂质体为实验对象,根据测量结果推测多脂系统的行为。为了使模型系统更接近真实的生物膜,本工作以多脂的大豆磷脂(九种组份)脂质体为对象,用PAT测到了在-25℃-+20℃范围内-18℃、-4℃+12℃处的三个相变点并与DSC测量结果作了比较,PAT结果给出了DSC未测出的-4℃处的相交点。 Biofilm is a multi-fat component system, the previous work is the use of PAT to measure the phase transition of biofilm model system, both single-lipid or two lipid components of phospholipid liposomes as the experimental object, according to the measurement results Multi-fat system behavior. In order to make the model system closer to the real biofilm, the purpose of this work is to study liposomes with multi-fat soy lecithin (nine components) The three transformation points at 4 ° C + 12 ° C were compared with the DSC measurements and the results of the PAT gave the points of intersection at -4 ° C, which were not measured by DSC.