胶原/甘油与胶原/异丙醇共混溶液的热行为比较(Ⅱ)——多元非线性回归动力学分析  

Comparison of thermal behaviors of collagen/glycerol and collagen/2-propanol blend solutions(Ⅱ):Multivariate non-linear regression kinetic analysis

作　　者：刘文涛[1,2] 王超 LIU Wentao;WANG Chao(??The Key Laboratory of Leather Chemistry and Engineering(Sichuan University),Ministry of Education,Chengdu 610065,China;??National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China)

机构地区：[1]皮革化学与工程教育部重点实验室(四川大学),四川成都 610065 [2]制革清洁技术国家工程实验室(四川大学),四川成都 610065

出　　处：《中国皮革》2019年第12期16-22,共7页China Leather

基　　金：国家自然科学基金(21606156)

摘　　要：采用多元非线性回归动力学手段对比研究了胶原/甘油与胶原/异丙醇共混溶液的热行为。分别考察了不同动力学模型:三步反应(Lumry-Eyring)模型、两步连续反应(d∶f)模型以及一步反应(Fn与F1)模型,对样品热分析曲线的拟合效果及模型的动力学参数。结果依据动力学模型的拟合效果优劣进行排序,胶原/甘油溶液的拟合模型顺序:Lumry-Eyring模型、d∶f模型、Fn模型和F1模型;胶原/异丙醇溶液的拟合模型顺序:Lumry-Eyring模型、Fn模型、F1模型和d∶f模型。胶原/甘油溶液的起始热变性活化能高于胶原/异丙醇溶液,但后者的热动力学行为尤其复杂。The thermal behaviors of collagen/glycerol and collagen/2-propanol blend solutions were comparatively studied by multivariate non-linear regression kinetic methods.The fitting quality and kinetic parameters of different models including the three-step(Lumry-Eyring) model,the two-step continuous reaction(d·f) model and the one-step(Fn and F1) models were investigated.The results show that the models for the collagen/glycerol solution are Lumry-Eyring model,d·f model,Fn model,and F1 model,while those for the collagen/2-propanol solution are Lumry-Eyring model,Fn model,F1 model,and d:f model,in terms of the fitting quality of models from good to bad.The initial heat denaturation activation energy of collagen/glycerol solution is higher than that of collagen/2-propanol solution,but the thermal behavior of the latter is particularly complicated.

关 键 词：胶原 热变性动力学 多元非线性回归 甘油 异丙醇 

分 类 号：TS51[轻工技术与工程—皮革化学与工程]