Coating zinc oxide submicron crystals on poly(methyl methacrylate) chips and spheres via ultrasound irradiation

被引：27

作者：

Anna, Kotlyar ^{[1
,2
]}

Nina, Perkas ^{[1
,2
]}

Yuri, Koltypin ^{[1
,2
]}

Meinhard, Meyer ^{[3
]}

Werner, Zimmermann ^{[3
]}

Aharon, Gedanken ^{[1
,2
]}

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

[2] Bar Ilan Univ, Kanbar Lab Nanomat, Ctr Adv Mat & Nanotechnol, IL-52900 Ramat Gan, Israel

[3] Metall Technol & Surface Engn, EADS Innovat Works, D-81663 Munich, Germany

来源：

ULTRASONICS SONOCHEMISTRY | 2008年 / 15卷 / 05期

关键词：

zinc oxide; nanocrystals; ultrasound irradiation; homogeneous deposition;

D O I：

10.1016/j.ultsonch.2007.10.011

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Ultrasound irradiation is used for anchoring zinc oxide submicron crystals with a main diameter and length of similar to 280 nm and 470 nm, respectively, onto the surface of poly(methyl methacrylate) PMMA chips (2 mm diameter), and zinc oxide crystals with a mean diameter and length of similar to 150 nm and 230 nm, respectively, onto the surface of the PMMA spheres (1-10 mu m). The zinc oxide crystals were obtained by sonochemical irradiation of a mixture containing the PMMA, zinc (II) acetate dihydrate, ethanol, water, and 24 wt.% aqueous ammonia for 2 h, yielding a PMMA-zinc oxide composite. By controlling the atmosphere and reaction conditions, we could achieve well-adhered zinc oxide crystals on the surface of poly(methyl methacrylate). The resulting zinc oxide-PMMA composite was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray analysis (EDX), high-resolution scanning electron microscopy (HRSEM), and photoluminescence (PL) spectroscopy. The zinc oxide-deposited PMMA chips (loaded with 0.03-1.0 wt.% ZnO) were successfully homogenized in melt by extrusion and then injection molded into small, disc-shaped samples. These samples were analyzed with respect to their directional spectral optical properties in UV, Vis and IR spectroscopy. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：839 / 845

页数：7

共 17 条

[11] Preparation of nano-ZnO/PMMA composite particles via grafting of the copolymer onto the surface of zinc oxide nanoparticles [J].