Surface characterization of nanoparticles carrying pH-responsive polymer hair

Syuji Fujii; Motomichi Suzaki; Yoshinobu Nakamura; Kenichi Sakai; Naoyuki Ishida; Simon Biggs

doi:10.1016/j.polymer.2010.10.041

Surface characterization of nanoparticles carrying pH-responsive polymer hair

Syuji Fujii, Motomichi Suzaki, Yoshinobu Nakamura, Kenichi Sakai, Naoyuki Ishida, Simon Biggs

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The surface of near-monodisperse colloidal polystyrene (PS) latex particles carrying pH-responsive poly[2-(diethylamino)ethyl methacrylate] (PDEA) polymer chains as a steric stabilizer has been extensively characterized in dry and wet states. X-ray photoelectron spectroscopy and contact angle measurement studies confirm that PDEA chains are located on the PS latex particle surface. Transmission electron microscopy (TEM) studies reveal that the sterically stabilized PS particles have a core-shell morphology and wet atomic force microscopy data confirm that the pH-responsive PDEA component covers the PS latex core and the thickness of the protonated steric polymer is estimated to be approximately 15 nm. The PS latex particles can be easily dispersed in acidic aqueous media (pH 3.0) whilst they flocculate in basic aqueous media (pH 10.0) due to the pH-responsive PDEA hair. This dispersion-flocculation cycle of the PS latex is fully reversible.

Original language	English
Pages (from-to)	6240-6247
Number of pages	8
Journal	polymer
Volume	51
Issue number	26
DOIs	https://doi.org/10.1016/j.polymer.2010.10.041
Publication status	Published - Dec 10 2010
Externally published	Yes

Keywords

Latex
Stimuli-responsive
Surface

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2010.10.041

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title = "Surface characterization of nanoparticles carrying pH-responsive polymer hair",

abstract = "The surface of near-monodisperse colloidal polystyrene (PS) latex particles carrying pH-responsive poly[2-(diethylamino)ethyl methacrylate] (PDEA) polymer chains as a steric stabilizer has been extensively characterized in dry and wet states. X-ray photoelectron spectroscopy and contact angle measurement studies confirm that PDEA chains are located on the PS latex particle surface. Transmission electron microscopy (TEM) studies reveal that the sterically stabilized PS particles have a core-shell morphology and wet atomic force microscopy data confirm that the pH-responsive PDEA component covers the PS latex core and the thickness of the protonated steric polymer is estimated to be approximately 15 nm. The PS latex particles can be easily dispersed in acidic aqueous media (pH 3.0) whilst they flocculate in basic aqueous media (pH 10.0) due to the pH-responsive PDEA hair. This dispersion-flocculation cycle of the PS latex is fully reversible.",

keywords = "Latex, Stimuli-responsive, Surface",

author = "Syuji Fujii and Motomichi Suzaki and Yoshinobu Nakamura and Kenichi Sakai and Naoyuki Ishida and Simon Biggs",

note = "Funding Information: We thank Professor Makoto Yuasa (Tokyo University of Science) and his group members for their help of XPS measurements and data analyses. This work was partially supported by Japan Society for the Promotion of Science , grant-in-aid for young scientists (B) [Project No. 20750182] and the Core-to-Core Program [Project No.18004]. ",

year = "2010",

month = dec,

day = "10",

doi = "10.1016/j.polymer.2010.10.041",

language = "English",

volume = "51",

pages = "6240--6247",

journal = "Polymer",

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T1 - Surface characterization of nanoparticles carrying pH-responsive polymer hair

AU - Fujii, Syuji

AU - Suzaki, Motomichi

AU - Nakamura, Yoshinobu

AU - Sakai, Kenichi

AU - Ishida, Naoyuki

AU - Biggs, Simon

N1 - Funding Information: We thank Professor Makoto Yuasa (Tokyo University of Science) and his group members for their help of XPS measurements and data analyses. This work was partially supported by Japan Society for the Promotion of Science , grant-in-aid for young scientists (B) [Project No. 20750182] and the Core-to-Core Program [Project No.18004].

PY - 2010/12/10

Y1 - 2010/12/10

N2 - The surface of near-monodisperse colloidal polystyrene (PS) latex particles carrying pH-responsive poly[2-(diethylamino)ethyl methacrylate] (PDEA) polymer chains as a steric stabilizer has been extensively characterized in dry and wet states. X-ray photoelectron spectroscopy and contact angle measurement studies confirm that PDEA chains are located on the PS latex particle surface. Transmission electron microscopy (TEM) studies reveal that the sterically stabilized PS particles have a core-shell morphology and wet atomic force microscopy data confirm that the pH-responsive PDEA component covers the PS latex core and the thickness of the protonated steric polymer is estimated to be approximately 15 nm. The PS latex particles can be easily dispersed in acidic aqueous media (pH 3.0) whilst they flocculate in basic aqueous media (pH 10.0) due to the pH-responsive PDEA hair. This dispersion-flocculation cycle of the PS latex is fully reversible.

AB - The surface of near-monodisperse colloidal polystyrene (PS) latex particles carrying pH-responsive poly[2-(diethylamino)ethyl methacrylate] (PDEA) polymer chains as a steric stabilizer has been extensively characterized in dry and wet states. X-ray photoelectron spectroscopy and contact angle measurement studies confirm that PDEA chains are located on the PS latex particle surface. Transmission electron microscopy (TEM) studies reveal that the sterically stabilized PS particles have a core-shell morphology and wet atomic force microscopy data confirm that the pH-responsive PDEA component covers the PS latex core and the thickness of the protonated steric polymer is estimated to be approximately 15 nm. The PS latex particles can be easily dispersed in acidic aqueous media (pH 3.0) whilst they flocculate in basic aqueous media (pH 10.0) due to the pH-responsive PDEA hair. This dispersion-flocculation cycle of the PS latex is fully reversible.

KW - Latex

KW - Stimuli-responsive

KW - Surface

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JO - Polymer

JF - Polymer

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ER -

Surface characterization of nanoparticles carrying pH-responsive polymer hair

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Keywords

ASJC Scopus subject areas

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