Structure and viscoelastic properties of hybrid ferrogels with iron oxide nanoparticles synthesized in situ

被引：27

作者：

Hernandez, Rebeca ^{[1
]}

Sacristan, Javier ^{[1
]}

Nogales, Aurora ^{[2
]}

Fernandez, Manuel ^{[3
]}

Ezquerra, Tiberio A. ^{[2
]}

Mijangos, Carmen ^{[1
]}

机构：

[1] CSIC, Inst Ciencia & Tecnol Polimeros, E-28006 Madrid, Spain

[2] CSIC, Inst Estruct Mat, E-28006 Madrid, Spain

[3] European Synchrotron Radiat Facil, ID02, F-38043 Grenoble, France

来源：

SOFT MATTER | 2010年 / 6卷 / 16期

关键词：

SMALL-ANGLE SCATTERING; RHEOLOGICAL PROPERTIES; GOLD NANOPARTICLES; CONTROLLED-RELEASE; AQUEOUS-SOLUTIONS; PARTICLE-SIZE; NANOCOMPOSITES; HYDROGELS; MATRIX;

D O I：

10.1039/c0sm00187b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ultra small angle X-ray scattering (USAXS) experiments in the q-range (10(-4)-0.2 angstrom) were performed to determine the structure of iron oxide NPs in situ synthesized inside semi-interpenetrating polymer networks (semi-IPNs) of linear alginate and crosslinked poly(N-isopropylacrylamide) (PNiPAAm). Results from the fitting of USAXS experiments were related with the reinforcement and swelling properties exhibited by the hybrid semi-IPNs which, in turn, were found to be highly dependant on the alginate concentration and the volume fraction of iron oxide nanoparticles. The USAXS findings, along with those from rheological and swelling measurements, allow determining whether iron oxide nanoparticles are bonded to the polymer matrix or if they are simply 'packed' inside the polymer network without interaction with the polymer chain.

引用

页码：3910 / 3917

页数：8

共 52 条

[31] Preparation and characterization of superparamagnetic iron oxide nanoparticles stabilized by alginate
Ma, Hui-li
Qi, Xian-tong
Maitani, Yoshie
Nagai, Tsuneji
[J]. INTERNATIONAL JOURNAL OF PHARMACEUTICS, 2007, 333 (1-2) : 177 - 186
[32] Phase separation of aqueous solutions of poly (N-isopropylacrylamide) investigated by confocal Raman microscopy
Maeda, Y
Yamamoto, H
Ikeda, I
[J]. MACROMOLECULES, 2003, 36 (14) : 5055 - 5057
[33] Change in hydration state during the coil-globule transition of aqueous solutions of poly(N-isopropylacrylamide) as evidenced by FTIR spectroscopy
Maeda, Y
Higuchi, T
Ikeda, I
[J]. LANGMUIR, 2000, 16 (19) : 7503 - 7509
[34] Mayer CR, 2000, ADV MATER, V12, P417, DOI 10.1002/(SICI)1521-4095(200003)12:6<417::AID-ADMA417>3.0.CO
[35] 2-K
[36] NANOCOMPOSITES Nanoparticles in the right place
Mezzenga, Raffaele
Ruokolainen, Janne
[J]. NATURE MATERIALS, 2009, 8 (12) : 926 - 928
[37] Preparation and magnetometric characterization of iron oxide-containing alginate/poly(vinyl alcohol) networks
Nishio, Y
Yamada, A
Ezaki, K
Miyashita, Y
Furukawa, H
Horie, K
[J]. POLYMER, 2004, 45 (21) : 7129 - 7136
[38] Structure and rheological properties of soft-hard nanocomposites:: influence of aggregation and interfacial modification
Oberdisse, J
El Harrak, A
Carrot, G
Jestin, J
Boué, F
[J]. POLYMER, 2005, 46 (17) : 6695 - 6705
[39] Structure and rheological properties of latex-silica nanocomposite films: Stress-strain isotherms
Oberdisse, J
[J]. MACROMOLECULES, 2002, 35 (25) : 9441 - 9450
[40] Structure of interacting aggregates of silica nanoparticles in a polymer matrix: small-angle scattering and reverse Monte Carlo simulations
Oberdisse, Julian
Hine, Peter
Pyckhout-Hintzen, Wim
[J]. SOFT MATTER, 2007, 3 (04) : 476 - 485

← 1 2 3 4 5 6 →