Shape evolution control of phase-separated colloidal nanoparticles

被引：13

作者：

Corten, Cathrin C. ^{[1
]}

Urban, Marek W. ^{[1
]}

机构：

[1] Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39406 USA

来源：

POLYMER CHEMISTRY | 2011年 / 2卷 / 01期

关键词：

FREE-RADICAL POLYMERIZATION; PARTICLE MORPHOLOGY; SURFACE; DISPERSIONS;

D O I：

10.1039/c0py00220h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

These studies illustrate controlled shape synthesis of two distinct phase-separated copolymers within one colloidal nanoparticle which consists of poly(methylmethacrylate) (p-MMA)/n-butylacrylate (nBA) and poly(nBA)/pentafluorostyrene (p-PFS) phases. Using sequential free radical polymerization, particle morphologies ranging from acorn to ellipsoidal, core-shell, and spherical were produced by adjusting the glass transition temperature (T-g) via compositional gradients during copolymerization. These studies show for the first time that in order to achieve desirable asymmetric particle shapes, the T-g as well as interfacial surface tension between two copolymers within one nanoparticle should be maintained during and after polymerization.

引用

页码：244 / 250

页数：7

共 32 条

[21] Particle morphology as a control of permeation in polymer films obtained from MMA/nBA colloidal dispersions [J].

Lestage, DJ ;

Urban, MW .

LANGMUIR, 2004, 20 (15) :6443-6449

[22] Dual temperature and pH responsiveness of poly(2-(N,N-dimethylamino)ethyl methacrylate-co-n-butyl acrylate) colloidal dispersions and their films [J].

Liu, Fang ;

Urban, Marek W. .

MACROMOLECULES, 2008, 41 (17) :6531-6539

[23]

MISRA A, 2009, MACROMOL RAPID COMM, V119, P31

[24] Synthesis of monodisperse bicolored janus particles with electrical anisotropy using a microfluidic co-flow system [J].

Nisisako, Takasi ;

Torii, Toru ;

Takahashi, Takanori ;

Takizawa, Yoichi .

ADVANCED MATERIALS, 2006, 18 (09) :1152-+

[25] Production of micron-sized monodispersed core/shell composite polymer particles by seeded dispersion polymerization [J].

Okubo, M ;

Izumi, J ;

Takekoh, R .

COLLOID AND POLYMER SCIENCE, 1999, 277 (09) :875-880

[26] ESTIMATION OF SURFACE FREE ENERGY OF POLYMERS [J].

OWENS, DK ;

WENDT, RC .

JOURNAL OF APPLIED POLYMER SCIENCE, 1969, 13 (08) :1741-&

[27] Effect of colloidal stabilizer on the shape of polystyrene/poly(methyl methacrylate) composite particles prepared in aqueous medium by the solvent evaporation method [J].

Saito, Naohiko ;

Kagari, Yoshimi ;

Okubo, Masayoshi .

LANGMUIR, 2006, 22 (22) :9397-9402

[28] Phospholipid-assisted synthesis of stable F-containing colloidal particles and their film formation [J].

Singh, A ;

Dreher, WR ;

Urban, MW .

LANGMUIR, 2006, 22 (02) :524-527

[29]

Souheng Wu, 1971, Journal of Polymer Science, Polymer Symposia, P19

[30] Effect of Molecular Weight on the Morphology of Polystyrene/Poly(methyl methacrylate) Composite Particles Prepared by the Solvent Evaporation Method [J].

Tanaka, Takuya ;

Nakatsuru, Reiko ;

Kagari, Yoshimi ;

Saito, Naohiko ;

Okubo, Masayoshi .

LANGMUIR, 2008, 24 (21) :12267-12271

← 1 2 3 4 →