Novel strategy for tailoring of SiO2 and TiO2 nanoparticle surfaces with poly(ε-caprolactone)

被引:5
|
作者
Karagoz, Bunyamin [1 ]
Galli, Giancarlo [2 ]
Durmaz, Hakan [1 ]
Hizal, Gurkan [1 ]
Tunca, Umit [1 ]
Bicak, Niyazi [1 ]
机构
[1] Istanbul Tech Univ, Dept Chem, TR-34469 Istanbul, Turkey
[2] Univ Pisa, Dept Chem, I-56126 Pisa, Italy
关键词
Nanoparticle; Surface-initiated polymerization; Poly(epsilon-caprolactone); Adsorption; Surface modification; Unsaturated polyester; SELF-ASSEMBLED MONOLAYERS; RADICAL POLYMERIZATION; NANOCOMPOSITES; PARTICLES; CLUSTERS;
D O I
10.1007/s00396-009-2167-0
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 novel strategy was developed for tailoring of SiO2 and TiO2 nanoparticle surfaces with poly(epsilon-caprolactone) (PCL). Thus, a self-curable polyester, poly(2-hydroxypropylene maleate) was adsorbed on the nanoparticle surfaces and heated to 180 A degrees C to give a cross-linked polyester layer with residual hydroxyalkyl groups on their surfaces. Surface-initiated polymerization of epsilon-caprolactone from hydroxyalkyl groups on the surfaces yielded core-shell nanoparticles with cross-linked core and PCL shells (22.2-71.4%). The organic shell layers around the nanoparticle cores were evidenced by transmission electron microscopy, dynamic light scattering, and thermogravimetric analyses techniques. The core-shell nanoparticles were then employed in preparing the stable and the homogenous dispersions with poly(methyl methacrylate-stat-butyl acrylate) solutions. An application of the solutions onto glass substrates yielded uniform and nearly transparent free standing films (40-60 mu m) with good homogeneity as inferred from scanning electron microscopy pictures.
引用
收藏
页码:535 / 542
页数:8
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