Engineering & Technology

Engineering & Technology

Hydrophobic Paper from the Wax of Colocasia esculenta (Taro Leaf) and Chitin from Crab Shell

Volume: 30  ,  Issue: 1 , June    Published Date: 17 June 2019
Publisher Name: IJRP
Views: 1006  ,  Download: 435


# Author Name
1 Ma. Lourdes C. Alvarez


Safety is very important to everyone, especially when it comes to packaging of food and non-food items. This
research aims to make hydrophobic paper from wax of taro leaves and chitin from crab shells. The physical properties
(color, odor, texture, tensile strength, thickness, density, solubility, liquid dropping) and chemical properties (ash content,
pH, moisture content) of the formulated hydrophobic paper were compared to the properties of commercial photographic
paper. Fourier Transformed Infrared (FTIR) was also used to determine functional groups present in the paper. The
prepared hydrophobic paper is dirty white in color, has a pleasant odor, rough texture, can withstand mass of 92 g, about
1.45 mm thickness, and has a density of 0.071g/mL Liquids (like soy sauce, vinegar and water) cannot pass through
except cooking oil. It is insoluble in water, hexane and dilute NaOH but slightly soluble in HCl. Physical properties of the
hydrophobic paper was found better than photographic paper except for its dirty white color due to the pigment of leaves
that was present in wax from taro leaves and its rough texture. The chemical properties showed that the hydrophobic paper
has a longer life than that of commercial photographic paper because it has a lower moisture content and has a pH of 8.2
which means that it is basic, and basic papers has longer shelf life than acidic papers. FTIR result showed that the
hydrophobic paper has an alkane group.


  • Hydrophobic
  • Colocasia
  • References

    Barthlott, W et al. (2016). Superhydrophobic hierarchically structured surfaces in Biology: evolution, structural principles and biomimetric applications. Retrieve November 18, 2018 from
    Ioannis, K et al. (2015). Facile method to prepare superhydrophobic and water repellent cellulosic
    paper. Retrieve November 18, 2018 from
    Karapanagiotis, I. and Manoudis, P. (2012). Journal of the Mechanical Behavior of Materials. Retrieve October 5, 2018 from
    Le?io, J.L. (2013). DOST’s Research Yields Water-Repellent, Anti-microbial Smart Textile. Retrieve
    October 5, 2018 from
    Mikaeli, F and Gouma, P.I. (2018). Super Water-Repellent Cellulose Acetates Mats. Retrieve November 18, 2018 from 2016.0191
    Mollah, M.M. (January 2010). Hydrophobic Property of Handmade Jute Paper Treated By Sizing Material ‘Rosin’. Vol. 5, p.48-52.
    Narsi, N.S. et al. (2013). Hydrophobicity Characterization of Bio-Wax Derived from Taro Leaf for Surface Coating Applications. Vol.1043, p. 184-188. ©2014 Trans Tech Publications, Switzerland.
    Song, Z. Li, al (2018). Application of Chitin/Chitosan and Their Derivatives in the Paper Making Industry. Shandong Academy of Sciences. Jinan 250353, China.

    Szyszka, D. (2012). Study of contact angle of liquid on solid surface and on solid on liquid surface. Retrieve October 5 2018 from
    Terry, B (February, 2013).The Plastic bags Problem. Retrieve September 29, 2018 from:
    Trilling, D. The Good the Bad of plastic bag bans: Research review. Retrieve September 29, 2018 from
    Watson, D. P. Taro (Colocasia esculenta). Retrieve October 4, 2018 from http://www,
    Yamabhai, M. and Khoushab, F. (2010) Chitin. Retrieve October 4, 2018 from
    Zhang, J. (2014). Flexible super hydrophobic paper with the large and stable floating capacity. Retrieve October 5, 2018 from