Fabrication of hydrophobic self-assembled monolayers (SAM) on the surface of ultra-strength nanocellulose films

Sang-Jin Chun; Sun-Young Lee; Gi-Young Jeong; Jung Hyeun Kim

Journal of Industrial and Engineering Chemistry, Vol.18, No.3, 1122-1127, May, 2012

DOI10.1016/j.jiec.2012.01.001 Export Citation

Fabrication of hydrophobic self-assembled monolayers (SAM) on the surface of ultra-strength nanocellulose films

Sang-Jin Chun^{1, 2}, Sun-Young Lee^{1, †}, Gi-Young Jeong¹, and Jung Hyeun Kim²

¹Department of Forest Resources Utilization, Korea Forest Research Institute, Seoul 130-712, Republic of Korea
²Department of Chemical Engineering, University of Seoul, Seoul 130-743, Republic of Korea

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Nanocellulose (NC) films with extremely high tensile properties after high-pressure homogenization and chemical modification with perfluoroctyltriethoxysilane (PFOTES) were prepared by a solutionimmersion method. The tensile properties of the treated NC films were significantly increased by the self-assembled monolayer (SAM) formation on the surface. With increasing the PFOTES concentration, the water contact angle (WCA) of the NC films increased up to 130.1°. The slope of the decaying WCA of the treated NC films decreased with increasing the immersion time and PFOTES concentration. XPS data shows that fluorine atoms by the SAM formation are obviously present on the surface of the NC films.

Keywords:Cellulose nanofibrils;Nanocellulose film;SAM;Water contact angle;Tensile properties;XPS

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Navarro F, Davalos F, Denes F, Cruz LE, Young RA, Ramos J, Cellulose., 10, 411 (2003)
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[2] Lee SY, Chun SJ, Kang IA, Park JY, J. Ind. Eng. Chem., 15(1), 50 (2009)

[3] Nakagaito AN, Yano H, Appl. Phys. A., 78, 547 (2004)

[4] Oh MJ, Lee SY, Paik KH, J. Ind. Eng. Chem., 17(1), 149 (2011)

[5] Andersen M, Johansson LJ, Tanem BS, Atenius P, Cellulose., 13, 665 (2006)

[6] Smook GA, Handbook for Pulp & Paper Technologists, 3rd ed., Angus Wilde Publications, Vancouver-Bellingham, Canada (2004)

[7] Ulman A, Chem. Rev., 96(4), 1533 (1996)

[8] Keavney JJ, Kulick RJ, Pulp and Paper, 2nd ed., John Wiley & Sons Inc., New York, NY, 1547 (1981)

[9] Zisman WA, Handbook of Adhesives, 2nd ed., Van Norstrand Reinhold Co., New York, NY, 33 (1976)

[10] Lu JZ, Wu Q, Wood Fiber Sci., 37(1), 95 (2005)

[11] Feng L, Li SH, Li YS, Li HJ, Zhang LJ, Zhai J, Song YL, Liu BQ, Jiang L, Zhu DB, Adv. Mater., 14(24), 1857 (2002)

[12] Shang HM, Wang Y, Limmer SJ, Chou TP, Takahashi K, Cao GZ, Thin Solid Films, 472(1-2), 37 (2005)

[13] Hare EF, Shafrin EG, Zisman WA, Phys. Chem. J., 58, 236 (1954)

[14] Dorris GM, Gray DG, Cell. Chem. Technol., 12, 9 (1978)

[15] Dorris GM, Gray DG, Cell. Chem. Technol., 12, 721 (1978)

[16] Johanssen LS, Campbell J, Kolijonen K, Stenius P, Appl. Surf. Sci., 144/145, 92 (1999)

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[21] Robertson AA, TAPPI J., 53(7), 133 (1970)

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[23] Belgacem MN, Gandini A, Compos. Interfaces, 12(1-2), 41 (2005)