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pH- and thermo-responsive dispersion of single-walled carbon nanotubes modified with poly(N-isopropylacrylamide-co-acrylic acid)

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Abstract.
Single-walled carbon nanotubes (SWNTs) were homogeneously dispersed in the aqueous solution of
poly(N-isopropylacrylamide-co-acrylic acid) (P(NIPAm-co-AA)) with the assistance of sonification as evidenced
by UV–vis absorption spectroscopy, transmission electron microscopy, field emission scanning
electron microscopy and atomic force microscopy, etc. In addition, the SWNTs were endowed with pHand
thermo-sensitivity at the same time. The SWNTs switched reversibly between the aggregated and
the well-exfoliated states by using pH or temperature as a stimulus. Moreover, the factors including solvent
composition while preparing P(NIPAm-co-AA), concentration and composition of P(NIPAm-co-AA)
showed evident influence on the dispersing stability of SWNTs. The introduction of a tiny amount of
acrylic acid to copolymerize with N-isopropylacrylamide could greatly enhance dispersing ability of
SWNTs.

Keywords:
pH-responsive
Thermo-responsive
Single-walled carbon nanotubes
Poly(N-isopropylacrylamide-co-acrylic acid)

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Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 334 (2009) 212–216

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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