Effect of Sulphur Hexafluoride (SF₆) Plasma on Hydrophobicity of Methylcellulose Film

Abstract:

Effect of plasma treatments (power, pressure and treatment time) on hydrophobicity (contact angle and water absorption time) and sorption isotherm of methylcellulose (MC) film using sulphur hexafluoride (SF6) were investigated. MC film specimens were precondition in desiccators containing silica gel at 25 ±2°C for 48 h. MC film specimens were plasma treated by an inductivity coupled plasma discharged (ICP) at 13.56 MHz with operating powers (25-75 W) and gas pressures (20-200 mTorr). The treatment times (10-300 second). Hydrophobicity of treated methylcellulose film outstandingly increased. The best plasma treatment condition was power 50 W and 100 mTorr. The treated MC film had higher contact angle and water absorption time than untreated sample at all operated treatment times; contact angle was increased up to 56-80°. These results were corresponding to sorption isotherm. The treated film was absorbed moisture higher than untreated film.

• Periodical: Advanced Materials Research (Volumes 93-94)
• Pages: 214-218
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.93-94.214
• Online since: January 2010
• Authors: Pornchai Rachtanapun, P. Wongchiaya, D. Boonyawan
• Keywords: Biodegradable Film, Methylcellulose, Plasma Treatment, Polymer, SF₆

References

[1] J. Simon, H. P. Miller, R. Koch, and V. Miiller: Polymer Degradation and Stability Vol. 59 (1998), p.107.

[2] O. W. Mendieta-Taboada, P. J. A. Sobral, R. A. Carvalho and A. M. B. Q. Habitante: Food Hydrocolloids Vol. 22 (2008), p.1485.

DOI: 10.1016/j.foodhyd.2007.10.001

[3] A. Haque and E. R. Morris: Carbohydrate Polymer Vol. 22 (1993), p.161.

[4] I. K. Greener and O. Fennema: Journal of Food Science Vol. 54(6) (1989a), p.1393.

[5] I. K. Greener and O. Fennema: Journal of Food Science Vol. 54(6), (1989b), p.1400.

[6] S. L. Kamper and O. Fennema: Journal of Food Science Vol. 49 (1984), p.1478.

[7] J. J. Kester and O. Fennema: Journal of Food Science Vol. 54(6), (1989), p.1383.

[8] C. M. Koelsch and T. P. Labuza: Lebensmittel-Wissenschaft und-Technologie Vol. 25(5) (1992), p.404.

[9] D. C. Rico Pena and J. A. Torres: Journal of Food Process Engineering Vol. 13 (1990), p.125.

[10] H. J. Park and M. S. Chinnan: Journal of Food Process Engineering Vol. 25 (1995), p.497.

[11] F. F. Chen, in: Introduction to Plasma Physics, Springer (1984).

[12] N. Inagaki, in: Plasma-Surface Modification and Plasma Polymerization. Technomic, Lancaster, PA (1995).

[13] P. Chaivan, N. Pasaja, D. Boonyawan, P. Suanpoot and T. Vilaithong: Surface & Coatings Technology Vol. 193 (2005), p.356.

DOI: 10.1016/j.surfcoat.2004.08.144

[14] P. Suanput, K. Kueseng, S. Ortmann, R. Kaufmann, C. Umongno, P. Nimmanpipug, D. Boonyawan and T. Vilaithong: Surface & Coatings Technology Vol. 20 (2)(2008), p.5543.

DOI: 10.1016/j.surfcoat.2008.06.086

[15] S. K Hodak, T. Supasai, B. Paosawatyanyong, Kamlangkla, and V. Pavarajarn: Applied Surface Science Vol. 254 (2) (2008), p.4744.

DOI: 10.1016/j.apsusc.2008.01.110

[16] A. Tezcaner, K. Bugra, and V. Hasırcı: Biomaterials Vol. 24 (2003), p.4573.

[17] Z. Ding, J. Chena, S. Gao, J. Chang, J. Zhang, and E.T. Kang: Biomaterials Vol. 25 (2004), p.1059.

[18] G.H. Ryu, W. S. Yang, H. W. Roh, I. S. Lee, J. K. Kim, G. H. Lee, D. H. Lee, B. J. Park, M. S. Lee, and J. C Park: Surface & Coatings Technology Vol. 193 (2005), p.60.

DOI: 10.1016/j.surfcoat.2004.07.062

[19] M.T. Khorasani, H. Mirzadeh, and S. Irani: Radiation Physics and Chemistry Vol. 77 (2008), p.280.

[20] R.Y. Korotkov, T. Goff, and P. Ricou: Surface & Coatings Technology Vol. 201(2007), p.7207.

[21] P. Rachtanapun: Chiang Mai Journal of Science Vol. 34(2) (2007), p.1.

[22] S. Thawornwiriyanan, T. Jinkarn, A. Sane, P. Rachtanapun, and D. Boonyawan: Journal of Metals, Materials and Minerals Vol. 18 (2) (2008), p.153.

[23] T. P. Labuza and B. Altunakar: Water activity prediction and moisture sorption isotherms. In: Water activity in foods fundamentals and applications (Barbosa-Canovas G. V., Fontana, Jr. A. J., Schmidt, S.J. and Labuza, T.P. eds. ), Blackwell Publishing, Iowa, (2007).

DOI: 10.1002/9781118765982.ch7

[24] P. Rachtanapun and W. Tongdeesoontorn: Asian Journal of Food and Agro-Industry (In revision, 2009).

[25] W. Tongdeesoontorn, L. J. Mauer, S. Wongruong and P. Rachtanapun: Asian Journal of Food and AgroIndustry (In revision, 2009).

[26] M. Vargas, A. Albors, A. Chiralt and C. Gonzalez-Martınez: Food Hydrocolloids Vol. 19 (2) (2008), p.289.

[27] M. F. Cervera, M. Karjalainen, S. Airaksinen, J. Rantanenb, K. Krogarsb, J. Heina¨ma¨kib, A. I. Colartea, and J. Yliruusib: European Journal of Pharmaceutics and Biopharmaceutics, Vol. 58 (2004), p.69.