羧甲基纤维素钠超声吸附脂肪酸相变材料的制备  

Fatty-acid-adsorbed Carboxymethyl Cellulose Sodium Prepared by Ultrasonic Adsorption with an Application to Phase Change Material

作　　者：苗扬[1] 李丽萍[1,2] 曲美洁 张秀成 MIAO Yang;LI Liping;QU Meijie;ZHANG Xiucheng(College of Science,Northeast Forestry University,Harbin 150040;College of Materials and Energy,South China Agricultural University,Guangzhou 510642)

机构地区：[1]东北林业大学理学院,哈尔滨150040 [2]华南农业大学材料与能源学院,广州510642

出　　处：《材料导报》2017年第A02期227-232,共6页Materials Reports

基　　金：国家自然科学基金(31570572);黑龙江省科技攻关重大项目(GA15A101)

摘　　要：通过超声吸附法,利用羧甲基纤维素钠(CMC)的孔洞吸附癸酸(CA)、月桂酸(LA)和肉豆蔻酸(MA)三种脂肪酸,制备了相变材料。通过FTIR、XRD、BET、SEM、DSC、TG测试方法研究了材料的综合性能。FTIR和XRD结果说明CMC与脂肪酸(FA)之间属于物理吸附;BET定性得出CMC吸附后的孔径、孔体积和表面积减小,CMC对CA、LA和MA的最大吸附率分别为35.3%、42.7%和44.7%,与TG和DSC定量得出的结果相一致,相变温度分别为36.53℃、46.05℃和57.04℃,相变焓值分别为60.27 J/g、72.06 J/g和81.58 J/g;微观形貌下CMC的孔洞被脂肪酸填充且在经过100次冷热循环后材料的相变性能和热稳定性良好。In this paper,capric acid(CA),lauric acid(LA)and myristic acid(MA)were adsorbed porous carboxymethyl cellulose sodium(CMC)by ultrasonic absorption.The comprehensive properties of the composites were studied by FTIR,XRD,BET,SEM,DSC and TG.FTIR and XRD indicated that CMC and fatty acid(FA)belonged to physical adsorption.The pore size,pore volume and surface area decreased by BET qualitative analysis.The maximum adsorption percent of CMC for CA,LA and MA were 35.3%,42.7%and 44.7%,respectively,which is consistent with the results by TG and DSC quantification.The phase transition temperature were 36.53℃,46.05℃and 57.04℃,respectively;the phase change enthalpy were 60,27 J/g、72.06 J/g and 81.58 J/g,respectively.The pores of the CMC were filled with fatty acids by SEM.The phase transition performance and thermal stability were performed well after 100 times of hot and cold cycles.

关 键 词：超声吸附 羧甲基纤维素钠 脂肪酸 相变材料 

分 类 号：TQ314.248[化学工程—高聚物工业]