Synthesis and characterization of stimuli-responsive poly(acrylic acid) grafted silica nanoparticles

被引：15

作者：

Lizhong Jiang ^{[1
]}

Qiushuang Gao ^{[1
]}

Yun Yu ^{[1
]}

Dezhen Wu ^{[1
]}

Zhanpeng Wu ^{[1
]}

Wencai Wang ^{[1
]}

Wantai Yang ^{[1
]}

Riguang Jin ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

SMART MATERIALS AND STRUCTURES | 2007年 / 16卷 / 06期

关键词：

D O I：

10.1088/0964-1726/16/6/019

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Silica-poly(acrylic acid) (PAAc) core-shell nanoparticles (NPs) were successfully prepared via graft copolymerization of acrylic acid (AAc) onto vinyl-bond-modified silica NPs. Transmission electron microscopy (TEM) results indicated that the obtained micropheres have a core-shell morphology. Fourier transform infrared (FTIR) analysis and x-ray photoelectron spectroscopy (XPS) measurements confirmed that the surface of the nanoparticles was polymer-rich, consistent with the core-shell morphology. The influence of the synthetic conditions, such as reaction time and AAc concentration on the graft yield of PAAc grafted on the silica NPs was investigated. Dynamic light scattering (DLS) analysis showed that the silica-PAAc core-shell nanoparticles possessed excellent response to pH and ion strength. Because of their pH-responsive behavior and small feature size, nanostructure devices designed from the smart silica nanoparticles have potential applications including sensors and membranes.

引用

页码：2169 / 2174

页数：6

共 46 条

[1] PMMA-based composite materials with reactive ceramic fillers .1. Chemical modification and characterisation of ceramic particles [J].

Abboud, M ;

Turner, M ;

Duguet, E ;

Fontanille, M .

JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (08) :1527-1532

[2] Light-responsive polyelectrolyte/gold nanoparticle microcapsules [J].

Angelatos, AS ;

Radt, B ;

Caruso, F .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (07) :3071-3076

[3] Sustained release properties of polyelectrolyte multilayer capsules [J].

Antipov, AA ;

Sukhorukov, GB ;

Donath, E ;

Möhwald, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (12) :2281-2284

[4] Temperature-sensitive core-shell microgel particles with dense shell [J].

Berndt, I ;

Pedersen, JS ;

Richtering, W .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (11) :1737-1741

[5] Structure of multiresponsive "intelligent" core-shell microgels [J].

Berndt, I ;

Pedersen, JS ;

Richtering, W .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (26) :9372-9373

[6] Synthesis and swelling behavior of a weak polyacid brush [J].

Biesalski, M ;

Johannsmann, D ;

Rühe, J .

JOURNAL OF CHEMICAL PHYSICS, 2002, 117 (10) :4988-4994

[7]

Caruso F, 2001, ADV MATER, V13, P11, DOI 10.1002/1521-4095(200101)13:1<11::AID-ADMA11>3.0.CO

[8]

2-N

[9] Ultrafine hydrogel fibers with dual temperature- and pH-responsive swelling behaviors [J].

Chen, H ;

Hsieh, YL .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2004, 42 (24) :6331-6339

[10] Preparation of SiO2/PMMA composite particles via conventional emulsion polymerization [J].

Cheng, Xinjian ;

Chen, Min ;

Zhou, Shuxue ;

Wu, Limin .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2006, 44 (12) :3807-3816

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