中国皮革

2019, v.48;No.756(12) 16-22

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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

刘文涛;王超;
LIU Wentao;WANG Chao;The Key Laboratory of Leather Chemistry and Engineering(Sichuan University),Ministry of Education;National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University;

摘要(Abstract):

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 FI) models were investigated.The results show that the models for the collagen/glycerol solution are Lumry-Eyring model,d·f model,Fn model,and FI 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(KeyWords): 胶原;热变性动力学;多元非线性回归;甘油;异丙醇
collagen;thermal denaturation kinetics;multivariate non-linear regression;glycerol;2-propanol

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基金项目(Foundation): 国家自然科学基金(21606156)

作者(Author): 刘文涛;王超;
LIU Wentao;WANG Chao;The Key Laboratory of Leather Chemistry and Engineering(Sichuan University),Ministry of Education;National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University;

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