Colloidal Probes of PNIPAM-Grafted SiO2 in Studying the Microrheology of Thermally Sensitive Microgel Suspensions
Joint Authors
Shang, Jing
Gao, Ruonan
Su, Fu
Wang, Huaguang
Zhu, Dan
Source
Advances in Polymer Technology
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The complex rheology and the phase behavior of thermally sensitive poly(N-isopropylacrylamide) (PNIPAM) microgels have been investigated in both the swollen and collapsed states by using microrheology.
To avoid the interactions between the tracer probes and the PNIPAM microgels, such as the adsorption or the depletion effect, the probes of silica (SiO2) particles have been grafted with PNIPAM chains (SiO2-PNIPAM) and characterized with Fourier transform infrared spectroscopy (FTIR).
The successful preparation of SiO2-PNIPAM has also been proved by the investigation of the particle size and morphology with dynamic light scattering (DLS) and transmission electron microscope (TEM) below and beyond the phase transition temperature of PNIPAM.
The microrheology of the PNIPAM microgel suspension has been investigated by using the prepared SiO2-PNIPAM particles as microrheological probes, and the results show that the diffusive coefficient of the probes in the swollen state is one-fifth of that in the collapsed state, and the viscosity of the PNIPAM microgel suspension in the swollen state is four times higher than that in the collapsed state, indicating SiO2-PNIPAM is a good probe in the microrheological study of PNIPAM microgel suspensions.
American Psychological Association (APA)
Shang, Jing& Gao, Ruonan& Su, Fu& Wang, Huaguang& Zhu, Dan. 2020. Colloidal Probes of PNIPAM-Grafted SiO2 in Studying the Microrheology of Thermally Sensitive Microgel Suspensions. Advances in Polymer Technology،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1130234
Modern Language Association (MLA)
Shang, Jing…[et al.]. Colloidal Probes of PNIPAM-Grafted SiO2 in Studying the Microrheology of Thermally Sensitive Microgel Suspensions. Advances in Polymer Technology No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1130234
American Medical Association (AMA)
Shang, Jing& Gao, Ruonan& Su, Fu& Wang, Huaguang& Zhu, Dan. Colloidal Probes of PNIPAM-Grafted SiO2 in Studying the Microrheology of Thermally Sensitive Microgel Suspensions. Advances in Polymer Technology. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1130234
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1130234