期刊
JOURNAL OF POLYMER RESEARCH
卷 21, 期 2, 页码 -出版社
SPRINGER
DOI: 10.1007/s10965-013-0350-y
关键词
Nanocomposites; Chiral layered double hydroxides; Polyvinylpyrrolidone; Ultrasonic irradiation; X-ray diffraction
资金
- Research Affairs Division Isfahan University of Technology (IUT), Isfahan
- Iran Nanotechnology Initiative Council (INIC)
- National Elite Foundation (NEF)
- Center of Excellency in Sensors and Green Chemistry (IUT)
In this contribution, polyvinylpyrrolidone (PVP) nanocomposites (NCs) with novel chiral diacid intercalated layered double hydroxides (LDHs) as nanofillers were prepared via ultrasonic irradiation. Chiral LDH was synthesized in one step via a co-precipitation reaction in aqueous solution under ultrasonic irradiation. The modified Mg-Al LDH shows an increase in interlayer distance as compared to the unmodified Mg-Al LDH by X-ray diffraction (XRD). Different NCs of organo-modified chiral LDHs and PVP were constructed by means of an ultrasonic process. The structures of these new materials were investigated by XRD, Fourier transform infrared, field emission scanning electron microscopy and transmission electron microscopy techniques. XRD and electron microscopy results confirmed the delaminated state of the LDH in the PVP matrix. Furthermore, thermal analysis was evaluated and the prepared NCs show significantly improved thermal stability at higher temperature because of the homogeneous and good dispersion of modified LDH in polymeric matrix.
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