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http://hdl.handle.net/2289/7684| Title: | Influence of particle size on the thermoresponsive and rheological properties of aqueous poly(N-isopropylacrylamide) colloidal suspensions |
| Authors: | Misra, Chandeshwar Behera, Sanjay Kumar Bandyopadhyay, Ranjini |
| Keywords: | Thermoresponsivity swelling ratio crosslinking density |
| Issue Date: | Dec-2020 |
| Publisher: | Indian Academy of Sciences, Bangalore, India. |
| Citation: | Bulletin of Materials Science, 2020, Vol. 4, p53-73. |
| Abstract: | Thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) particles of different sizes are synthesized by varying the concentration of sodium dodecyl sulphate (SDS) in a one-pot method. The sizes, size olydispersities and the thermoresponsivity of the PNIPAM particles are characterized by using dynamic light scattering and scanning electron microscopy. It is observed that the sizes of these particles decrease with increase in SDS concentration. Swelling ratios of PNIPAM particles measured from the thermoresponsive curves are observed to increase with decrease in particle size. This observation is understood by minimizing the Helmholtz free energy of the system with respect to the swelling ratio of the particles. Finally, the dynamics of these particles in jammed aqueous suspensions are investigated by performing rheological measurements. |
| Description: | Open Access. |
| URI: | http://hdl.handle.net/2289/7684 |
| ISSN: | 0250-4707 |
| Alternative Location: | https://www.ias.ac.in/article/fulltext/boms/043/0182 |
| Copyright: | 2020, Indian Academy of Sciences, Bangalore, India. |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2020_Bulletin of Materials Science_Vol.43_Article No.182.pdf | Open Access | 2.08 MB | Adobe PDF | View/Open |
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