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Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends

Polymer-coated gold nanoparticles (Au NPs) with controlled size and surface chemistry were successfully synthesized and applied to tailor the structures and properties of polytriphenylamine (PTPA) and polystyrene (PS) blends. Two different polymer-coated Au NPs with sizes of 5.9 nm (Au NP-1) an...

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Main Authors: Kwon, Taegyun, Kim, Taesu, Ali, Fathilah, Kang, Dong Jin, Yoo, Misang, Bang, Joona, Lee, Wonbo, Kim, Bumjoon J.
Format: Article
Language:English
Published: American Chemical Society 2011
Subjects:
TP200 Manufacture and use of chemicals
Online Access:http://irep.iium.edu.my/37359/1/ma2020134.pdf
http://irep.iium.edu.my/37359/
http://pubs.acs.org/doi/abs/10.1021/ma2020134
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spelling my.iium.irep.373592014-08-11T02:39:29Z http://irep.iium.edu.my/37359/ Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends Kwon, Taegyun Kim, Taesu Ali, Fathilah Kang, Dong Jin Yoo, Misang Bang, Joona Lee, Wonbo Kim, Bumjoon J. TP200 Manufacture and use of chemicals Polymer-coated gold nanoparticles (Au NPs) with controlled size and surface chemistry were successfully synthesized and applied to tailor the structures and properties of polytriphenylamine (PTPA) and polystyrene (PS) blends. Two different polymer-coated Au NPs with sizes of 5.9 nm (Au NP-1) and 20.7 nm (Au NP-2) were designed to be thermally stable above 200 �C and neutral to both PS and PTPA phases. Hence, both Au NPs localize at the PS/PTPA interface and function as compatibilizers in the PS/PTPA blend. To show the compatibilizing effect of the particles, the morphological behaviors of PS/PTPA blends containing different particle volume fractions (ϕp) of Au NPs were observed using cross-sectional TEM, and for quantitative analysis, the size distribution of PTPA droplets in the PS matrix was obtained for each sample. The number-average droplet diameter (Dn) of the PTPA domain in the blend was dramatically reduced from 1.4 μmto 500 nm at a small ϕp of 1.0 vol % Au NP-1. The same trend of decreasing Dn was also observed with the addition of larger Au NP-2, but a higher ϕp was required to obtain the same amount of reduction in the PTPA droplet size. The ϕp required to fully cover the PS/PTPA interface as a packed monolayer of Au NPs was calculated as 0.98 vol % for Au NP-1 and 3.38 vol % for Au NP-2, thus giving excellent agreement with critical ϕp values for the saturation of the PTPA droplet diameter Dn. To demonstrate the effectiveness of Au NPs as compatibilizers, polystyrene-b-poly(triphenylamine) (PS-b-PTPA) block copolymers were also synthesized and used as compatibilizers in the PS/PTPA blend. The decrease in Dn with the addition of PS-b-PTPA was always smaller than that with addition of Au NP-1 at the same ϕp, indicating that Au NPs are more effective compatibilizers. This different behavior can be attributed to the presence of PS-b-PTPA compatibilizers as micelles or free chains in the homopolymer matrix. In contrast, most Au NPs were strongly adsorbed to the PS/PTPA interface. American Chemical Society 2011 Article REM application/pdf en http://irep.iium.edu.my/37359/1/ma2020134.pdf Kwon, Taegyun and Kim, Taesu and Ali, Fathilah and Kang, Dong Jin and Yoo, Misang and Bang, Joona and Lee, Wonbo and Kim, Bumjoon J. (2011) Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends. Macromolecules, 44. pp. 9852-9862. ISSN 1520-5835 (O), 0024-9297 (P) http://pubs.acs.org/doi/abs/10.1021/ma2020134 10.1021/ma2020134
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic TP200 Manufacture and use of chemicals
spellingShingle TP200 Manufacture and use of chemicals
Kwon, Taegyun
Kim, Taesu
Ali, Fathilah
Kang, Dong Jin
Yoo, Misang
Bang, Joona
Lee, Wonbo
Kim, Bumjoon J.
Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends
description Polymer-coated gold nanoparticles (Au NPs) with controlled size and surface chemistry were successfully synthesized and applied to tailor the structures and properties of polytriphenylamine (PTPA) and polystyrene (PS) blends. Two different polymer-coated Au NPs with sizes of 5.9 nm (Au NP-1) and 20.7 nm (Au NP-2) were designed to be thermally stable above 200 �C and neutral to both PS and PTPA phases. Hence, both Au NPs localize at the PS/PTPA interface and function as compatibilizers in the PS/PTPA blend. To show the compatibilizing effect of the particles, the morphological behaviors of PS/PTPA blends containing different particle volume fractions (ϕp) of Au NPs were observed using cross-sectional TEM, and for quantitative analysis, the size distribution of PTPA droplets in the PS matrix was obtained for each sample. The number-average droplet diameter (Dn) of the PTPA domain in the blend was dramatically reduced from 1.4 μmto 500 nm at a small ϕp of 1.0 vol % Au NP-1. The same trend of decreasing Dn was also observed with the addition of larger Au NP-2, but a higher ϕp was required to obtain the same amount of reduction in the PTPA droplet size. The ϕp required to fully cover the PS/PTPA interface as a packed monolayer of Au NPs was calculated as 0.98 vol % for Au NP-1 and 3.38 vol % for Au NP-2, thus giving excellent agreement with critical ϕp values for the saturation of the PTPA droplet diameter Dn. To demonstrate the effectiveness of Au NPs as compatibilizers, polystyrene-b-poly(triphenylamine) (PS-b-PTPA) block copolymers were also synthesized and used as compatibilizers in the PS/PTPA blend. The decrease in Dn with the addition of PS-b-PTPA was always smaller than that with addition of Au NP-1 at the same ϕp, indicating that Au NPs are more effective compatibilizers. This different behavior can be attributed to the presence of PS-b-PTPA compatibilizers as micelles or free chains in the homopolymer matrix. In contrast, most Au NPs were strongly adsorbed to the PS/PTPA interface.
format Article
author Kwon, Taegyun
Kim, Taesu
Ali, Fathilah
Kang, Dong Jin
Yoo, Misang
Bang, Joona
Lee, Wonbo
Kim, Bumjoon J.
author_facet Kwon, Taegyun
Kim, Taesu
Ali, Fathilah
Kang, Dong Jin
Yoo, Misang
Bang, Joona
Lee, Wonbo
Kim, Bumjoon J.
author_sort Kwon, Taegyun
title Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends
title_short Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends
title_full Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends
title_fullStr Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends
title_full_unstemmed Size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends
title_sort size-controlled polymer-coated nanoparticles as efficient compatibilizers for polymer blends
publisher American Chemical Society
publishDate 2011
url http://irep.iium.edu.my/37359/1/ma2020134.pdf
http://irep.iium.edu.my/37359/
http://pubs.acs.org/doi/abs/10.1021/ma2020134
_version_ 1643611190948003840
score 13.211869

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