Morphology-controlled functional colloids by heterocoagulation of zein and nanoparticles

被引：19

作者：

Baars, Roel J. ^{[1
]}

van Leeuwen, Y. Mikal ^{[1
]}

Hendrix, Yuri ^{[1
]}

Velikov, Krassimir P. ^{[2
,3
]}

Kegel, Willem K. ^{[1
]}

Philipse, Albert P. ^{[1
]}

机构：

[1] Univ Utrecht, Debye Inst Nanomat Sci, Vant Hoff Lab Phys & Colloidal Chem, NL-3584 CH Utrecht, Netherlands

[2] Unilever Res Labs, NL-3133 AT Vlaardingen, Netherlands

[3] Univ Utrecht, Delve Inst Nanomat Sci, Soft Condensed Matter, NL-3584 CC Utrecht, Netherlands

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2015年 / 483卷

关键词：

Zein; Composite particles; Silica coating; Nanoparticles; Heterocoagulation; SILICA; MICROSPHERES; REACTIVITY; PROTEIN;

D O I：

10.1016/j.colsurfa.2015.04.042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A general and reproducible heterocoagulation method is presented to prepare sub-micron sized zein protein particles, loaded with negatively charged nanoparticles. These composite carrier particles can be obtained in three different morphologies, and each morphology can be prepared using nanoparticles of various size, shape and composition. An important feature of the zein composites is their long-term stability in water even in conditions where free nanoparticles often aggregate within days. Additionally, we modify the composite particles by coating them with a thin layer of silica via condensation of sodium silicate, opening possibilities for highly specific, functionalized carrier particles. Finally, the formation of hollow silica shells containing negatively charged nanoparticles is demonstrated, using the zein composites as a template. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：209 / 215

页数：7

共 29 条

[1] Nanotechnological applications in medicine [J].