The effects of concentrations of ZnO nanoparticles on dewetting suppression of PS thin films
Keywords:Thin filmng, Surface morphology, Dewetting
AbstractThin polymer films are widely used in industry, such as protective coating, lubricant and electrical insulator, because of their specific properties. However, thin film in nanoscale tends to separate from substrate; this phenomenon is called Dewetting. In this research, a solution of polystyrenes with a concentration of 0.3 wt% in toluene, providing ~ 21 nm polymeric film, was prepared. Zinc-oxide nanoparticles were added in a polystyrene solution as a Dewetting inhibitor. The concentrations of zinc-oxide were varied from 0 â€“ 1.0 wt%. Thin films were cast by a spin casting machine. After annealing at 90ËšC in a vacuum oven for various times, the film morphologies were studied by using optical, scanning electron, and atomic force microscopes. The surface energies of the films were calculated by contact angle measurement. We found that the addition of zinc-oxide nanoparticles at 0.3 wt% is an appropriate concentration to inhibit Dewetting in PS films which have a molecular weight of 35,000 gÂ·mol-1.
J. Che, A. Jawaid, C. A. Grabowski, Y. Yi, G. C. Louis, S. Ramakrishnan, and R. A. Vaia, “Stability of polymer grafted nanoparticle monolayers: Impact of architecture and polymer−substrate interactions on dewetting,” ACS Macro Letter, vol. 5, pp. 1369-1374, 2016.
C. Muller, “On the glass transition of polymer semiconductors and its impact on polymer solar cell stability,” Chemistry of Materials, vol. 27, pp. 2740-2754, 2015.
X. J. Cai, H. Yuan, A. Blencowe, G. G. Qiao, J. Genzer, and R. J. Spontak, “Film-stabilizing attributes of polymeric core-shell nanoparticles,” ACSNANO, vol. 9, pp. 7940-7949, 2015.
J. K. Bal, T. Beuvier, A. B. Unni, E. A. C. Panduro, G. Vignaud, N. Delorme, M. S. Chebil, Y. Grohens, and A. Gibaud, “Stability of polymer ultrathin films (<7 nm) made by a top-down approach,” ACSNANO, vol. 9, pp. 8184-8193, 2015.
N. Pangpaiboon, R. Traiphol, and N. Traiphol, “Enhancing the stability of polystyrene ultrathin films by using star-shape polymers as dewetting inhibitors,” Journal of Coatings Technology and Research, vol. 12, pp. 1173- 1183, 2015.
K. A. Barnes, A. Karim, J. F. Douglas, A. I. Nakatani, H. Gruell, and J. A. Eric, “Suppression of dewetting in nanoparticlefilled polymer films,” Macromolecules, vol. 33, pp. 4177-4177, 2000.
R. S. Krishnan, M. E. Mackay, C. J. Hawker, and B. Van Horn, “Influence of molecular architecture on the dewetting of thin polystyrene films,” Langmuir, vol. 21, pp. 5770-5776, 2005.
M. E. Mackay, Y. Hong, M. Jeong, S. Hong, T. P. Russell, C. J. Hawker, R. Vestberg, and J. F. Douglas, “Influence of dendrimer additives on the dewetting of thin polystyrene films,” Langmuir, vol. 18, pp. 1877–1882, 2002.
H. Chung, K. Ohno, T. Fukuda, and R. J. Composto, “Internal phase separation drives dewetting in polymer blend and nanocomposite films,” Macromolecules, vol. 40, pp. 384- 388, 2007.
N. Pangpaiboon and N. Traiphol, “Dewetting suppression of polystyrene thin film using titanium dioxide nanoparticles,” Key Engineering Materials, vol. 608, pp. 218-223, 2014.
N. Kumaresan, K. Ramamurthi, R. R. Babu, K. Sethuraman, and S. M. Babud, “Hydrothermally grown ZnO nanoparticles for effective photocatalytic activity,” Applied Surface Science, vol. 418, pp. 138-146, 2017.
R. S. Krishnan, M. E. Mackay, P. M. Duxbury, C. J. Hawker, S. Asokan, M. S. Wong, R. Goyette, and P. Thiyagarajan, “Improved polymer thin-film wetting behavior through nanoparticle segregation to interfaces,” Journal of Physics: Condensed Matter, vol. 19, pp. 1-16, 2007.
H. Y. Erbil, Surface Chemistry of Solid and Liquid Interfaces. Blackwell Publishing Ltd., 2006.
N. Pangpaiboon, “Effects of zinc oxide nanoparticles on polystyrene thin films,” Journal of Science & Technology, Ubon Ratchathani University, Special Issue, pp. 8- 11, 2016.
R. Traiphol, “Influences of chain heterogeneity on instability of polymeric thin films: Dewetting of polystyrenes, polychloromethylstyrenes and its copolymers,” Journal of Colloid and Interface Science, vol. 310, pp. 217–228, 2007.
L. Xue and Y. Han, “Inhibition of dewetting of thin polymer films,” Progress in Materials Science, vol. 57, pp. 947–979, 2012.
How to Cite
Copyright (c) 2018 Journal of Metals, Materials and Minerals
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who publish in this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.