Abstract
The dimensions and intermolecular interactions of surface-grafted and unbound, free polyampholytes, poly3-(N-2-methacryloyloxyethyl-N,N-dimethyl) ammonatopropanesulfonate (PMAPS) and poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC), were estimated in an aqueous NaCl solution over a wide range of salt concentrations (C s). The free PMAPS and PMPC fractionated by a recycling preparative size-exclusion chromatography system were characterized in aqueous NaCl solutions for C s over a range from 0 to 5.0 M by static light scattering and dynamic light scattering (DLS) measurements. The hydrodynamic radius (R H) and the concentration coefficient of the diffusion coefficient (k D) for PMPC were independent of C s, whereas those for PMAPS were strongly dependent on C s. Monodisperse silica nanoparticles immobilized with PMAPS (SiNP-PMAPS) and PMPC (SiNP-PMPC) by surface-initiated atom transfer radical polymerization were characterized in aqueous NaCl solutions for C s over a range from 0 to 5.0 M by DLS and synchrotron radiation small-angle X-ray scattering (SAXS) measurements. The SAXS profiles from SiNP-PMAPS and SiNP-PMPC solutions were well described by the core-shell model, taking into account interacting self-avoiding chains and assuming a Schulz-distributed core with two fitting parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 121-130 |
| Number of pages | 10 |
| Journal | Polymer Journal |
| Volume | 44 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2012 |
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All Science Journal Classification (ASJC) codes
- Polymers and Plastics
- Materials Chemistry
Cite this
Chain dimension of polyampholytes in solution and immobilized brush states. / Kikuchi, Moriya; Terayama, Yuki; Ishikawa, Tatsuya; Hoshino, Taiki; Kobayashi, Motoyasu; Ogawa, Hiroki; Masunaga, Hiroyasu; Koike, Jun Ichiro; Horigome, Misao; Ishihara, Kazuhiko; Takahara, Atsushi.
In: Polymer Journal, Vol. 44, No. 1, 01.01.2012, p. 121-130.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Chain dimension of polyampholytes in solution and immobilized brush states
AU - Kikuchi, Moriya
AU - Terayama, Yuki
AU - Ishikawa, Tatsuya
AU - Hoshino, Taiki
AU - Kobayashi, Motoyasu
AU - Ogawa, Hiroki
AU - Masunaga, Hiroyasu
AU - Koike, Jun Ichiro
AU - Horigome, Misao
AU - Ishihara, Kazuhiko
AU - Takahara, Atsushi
PY - 2012/1/1
Y1 - 2012/1/1
N2 - The dimensions and intermolecular interactions of surface-grafted and unbound, free polyampholytes, poly3-(N-2-methacryloyloxyethyl-N,N-dimethyl) ammonatopropanesulfonate (PMAPS) and poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC), were estimated in an aqueous NaCl solution over a wide range of salt concentrations (C s). The free PMAPS and PMPC fractionated by a recycling preparative size-exclusion chromatography system were characterized in aqueous NaCl solutions for C s over a range from 0 to 5.0 M by static light scattering and dynamic light scattering (DLS) measurements. The hydrodynamic radius (R H) and the concentration coefficient of the diffusion coefficient (k D) for PMPC were independent of C s, whereas those for PMAPS were strongly dependent on C s. Monodisperse silica nanoparticles immobilized with PMAPS (SiNP-PMAPS) and PMPC (SiNP-PMPC) by surface-initiated atom transfer radical polymerization were characterized in aqueous NaCl solutions for C s over a range from 0 to 5.0 M by DLS and synchrotron radiation small-angle X-ray scattering (SAXS) measurements. The SAXS profiles from SiNP-PMAPS and SiNP-PMPC solutions were well described by the core-shell model, taking into account interacting self-avoiding chains and assuming a Schulz-distributed core with two fitting parameters.
AB - The dimensions and intermolecular interactions of surface-grafted and unbound, free polyampholytes, poly3-(N-2-methacryloyloxyethyl-N,N-dimethyl) ammonatopropanesulfonate (PMAPS) and poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC), were estimated in an aqueous NaCl solution over a wide range of salt concentrations (C s). The free PMAPS and PMPC fractionated by a recycling preparative size-exclusion chromatography system were characterized in aqueous NaCl solutions for C s over a range from 0 to 5.0 M by static light scattering and dynamic light scattering (DLS) measurements. The hydrodynamic radius (R H) and the concentration coefficient of the diffusion coefficient (k D) for PMPC were independent of C s, whereas those for PMAPS were strongly dependent on C s. Monodisperse silica nanoparticles immobilized with PMAPS (SiNP-PMAPS) and PMPC (SiNP-PMPC) by surface-initiated atom transfer radical polymerization were characterized in aqueous NaCl solutions for C s over a range from 0 to 5.0 M by DLS and synchrotron radiation small-angle X-ray scattering (SAXS) measurements. The SAXS profiles from SiNP-PMAPS and SiNP-PMPC solutions were well described by the core-shell model, taking into account interacting self-avoiding chains and assuming a Schulz-distributed core with two fitting parameters.
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U2 - 10.1038/pj.2011.116
DO - 10.1038/pj.2011.116
M3 - Article
VL - 44
SP - 121
EP - 130
JO - Polymer Journal
JF - Polymer Journal
SN - 0032-3896
IS - 1
ER -