C_(36)二聚脂肪酸/聚乙二醇聚酯的制备及动力学研究被引量：1

Study on the preparation and kinetics of C_(36) dimer fatty acid-polyethylene glycol polyester

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摘要以C36二聚脂肪酸和聚乙二醇400为原料,缩聚得到一种新型高分子表面活性剂,适宜的工艺条件:在0.097 MPa下,n(二聚脂肪酸)∶n(聚乙二醇400)为1∶1.2,催化剂SnCl2(相对二聚脂肪酸质量分数为0.3%,反应温度200℃,反应时间6 h,酯化率达到98.11%。建立了SnCl2催化下,二聚脂肪酸与聚乙二醇缩聚反应的动力学模型,并采用改进的遗传算法,对动力学模型参数进行估算。结果显示,二聚脂肪酸与聚乙二醇400缩聚反应级数为0.998级,酯化反应活化能E=97.18 kJ/mol,指前因子A=1.947 9×109L/(mol.min),缩聚反应的Arrhenius方程为lnk=21.39-11.689/T。 C36 dimer fatty acid （DFA）-polyethylene glycol 400 （PEG 400） polyester, a new kind of non-ionic polymeric surfactant, was synthesized using DFA and PEG 400 as materials under 0. 097 MPa. The optimum reaction conditions were as follows： n（DFA）： n（PEG 400） was 1： 1.2, the amount of catalyst SnCl2 was 0.3% of the mass of DFA, reaction temperature was 200 ℃, reaction time was 6 h. The conversion ratio of polyesterification could reach 98.11%. New kinetic model of polyesterification reaction was established taking SnCl2 as catalyst. The Genetic Algorithm optimized was used to estimate the parameters of the kinetic model. The research results show that the speed degree of polyesterification reaction of DFA and PEG is 0.998, activation energy is 97.18 kJ/mol. Pre-exponential A = 1. 947 9×10^9L/（mol·min）. Arrhenius equation is as follows： ln k = 21.39 - 11. 689/T.

作者冯光炷李和平崔英德卢奎渠海

机构地区河南工业大学化学化工学院桂林工学院材料与化学工程系仲恺农业技术学院绿色化工研究所

出处《化学工程》 EI CAS CSCD 北大核心 2007年第7期75-78,共4页 Chemical Engineering(China)

基金河南省自然科学基金资助项目(0511021000)

关键词 C36二聚脂肪酸聚乙二醇聚酯合成遗传算法动力学活化能 DFA-PEG polyester preparation genetic algorithm kinetics activation energy

分类号 TB324 [一般工业技术—材料科学与工程]

作者简介冯光炷（1961-），男，博士，教授，研究方向为功能高分子材料的合成与应用研究，电话：（0371）67756717，E-mail：fengguangzhu@163．com。

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