Preparation and Anti-mildew Properties of TPN-SDS-layered Double Hydroxide Nanohybrids

doi:10.3724/SP.J.1077.2014.13438

Abstract

Abstract: MgAl-TPN-SDS-LDHs nanohybrids were synthesized by coprecipitation process. The anti-mildew durability of TPN were improved when nanohybrids was introduced in alkyd resin coating due to inhibition release rate of TPN. The non-ionic, poorly water-soluble chlorothalonil (TPN) was firstly incorporated into micelles derived from negatively charged surfactants-sodium dodecyl sulfate (SDS). The negatively charged micelles were then encapsulated in nanoparticles of MgAl-layered double hydroxides. The as-prepared nanohybrids were characterized by X-ray diffraction, Fourier transform infrared spectroscope, scanning electron microscope, transmission electron microscope and UV-VIS absorption spectrum. The results showed that MgAl-TPN-SDS-LDHs nanohybrids were successfully prepared, with TPN loading rate at 34.49wt%. The release kinetic of TPN from TPN-SDS-LDHs nanohybrids was investigated in butyl acetate and the release process fitted the pseudo-second-order kinetic equation. The alkyd resin coating containing TPN-SDS-LDHs nanohybrids showed better anti-mildew durability than coating containing TPN in fungus test.

Key words: layered double hydroxides, sodium dodecyl sulfate, chlorothalonil, sustained-release, anti-mildew

CLC Number:

TB34
TG172

LI Yan-Yun, LI Song-Mei, LIU Jian-Hua, YU Mei. Preparation and Anti-mildew Properties of TPN-SDS-layered Double Hydroxide Nanohybrids[J]. Journal of Inorganic Materials, 2014, 29(5): 515-522.

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