Novel nanocomposites of poly(vinyl alcohol) and Mg-Al layered double hydroxide intercalated with diacid N-tetrabromophthaloyl-aspartic

被引：26
作者：
Mallakpour, Shadpour [1 ,2 ,3 ]
Dinari, Mohammad [1 ,2 ]
Hatami, Masoud [1 ]
机构：
[1] Isfahan Univ Technol, Organ Polymer Chem Res Lab, Dept Chem, Esfahan 8415683111, Iran
[2] Isfahan Univ Technol, Nanotechnol & Adv Mat Inst, Esfahan 8415683111, Iran
[3] Isfahan Univ Technol, Ctr Excellence Sensors & Green Chem, Dept Chem, Esfahan 8415683111, Iran
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2015年 / 120卷 / 02期
关键词：
Layered double hydroxide; Ultrasonic irradiation; Poly(vinyl alcohol); Nanocomposite; ULTRASONIC IRRADIATION; ENHANCEMENT; COMPOSITES; NANOPARTICLES; REMOVAL; NICKEL; CHAIN;
D O I：
10.1007/s10973-015-4442-2
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this work, organic diacid was synthesized from tetrabromophthalic anhydrides and l-aspartic acid in refluxed acetic acid at the presence of pyridine. The interlayer basal spacing of LDH was modified with organic diacid via co-precipitation method using ultrasonic irradiation. The intercalated Mg-Al LDH (mLDH) materials showed an increase in interlayer distance as compared to the unmodified Mg-Al LDH by X-ray diffraction. Transmission electron microscopy images showed plate-like nature for intercalated diacid LDH. Poly(vinyl alcohol) (PVA)/mLDH nanocomposites (NCs) with different composition of mLDH were prepared through ultrasound-assisted technique in the deionized water by solution intercalation method. Field emission scanning electron microscopy image results show that mLDH was dispersed homogeneously in PVA matrix. Optical clarity of obtained NCs was investigated using UV-visible transmission spectra. Thermogravimetry showed improvement in thermal properties of PVA/mLDH NCs. Mechanical data showed improvement in the tensile strength and modulus with increasing of the mLDH loading.
引用
收藏
页码：1293 / 1302
页数：10
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