Melissa Sharmah Gilbert Jesuet, Ismawati Palle & Liew Kang Chiang
Wood Technology and Industry Program,
Faculty of Science and Natural Resources (Forestry Complex),
Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia
Cellulose comprise of about 40–50 % of the composition of wood, making it one of the most abundant organic polymers on earth. Cellulose is very versatile in terms of application, with a wide array of products fabricated, including the chemically modified cellulose derivatives. One of the more prominent and multifaceted derivatives is the cellulose acetate, in which have been used predominantly as cigarette filters, membrane filters, and coating. In this study, the intermediate product, Acacia mangium-produced cellulose acetate was modified into lacquer to produce a feasible wood coating product. The lacquer underwent a series of tests such as impact, abrasion, adhesion, and hardness to evaluate its mechanical performance. The results of the coating were compared to a similarly formulated acetate lacquer that was produced using commercial cellulose acetate instead as a control. Based on the result, it is shown that Acacia mangium-produced cellulose acetate lacquer shows a better impact resistance with a rating of 4 as opposed to the commercial cellulose acetate with a rating of 3 with moderate cracking, with an approximate 6% better abrasion resistance and higher hardness rating class. Meanwhile, the commercial cellulose acetate lacquer presents a better adhesion performance with only 5% flaking compared to the 15% flaking of Acacia mangium-produced cellulose acetate lacquer. The Acacia mangium-produced cellulose acetate lacquer indicates a novel benefit from the presence of impurities from the intermediate Acacia mangium-produced cellulose acetate product such as the plasticizing hemicellulose acetate, as well as the hydrophobic lignin.
Keywords: Cellulose acetate, lacquer, wood coating, mechanical properties
- ASTM. (2005). D3363 Standard Test Methods for Film Hardness by Pencil Test. United States: ASTM International
- ASTM. (2012). D2486 Standard Test Methods for Scrub Resistance of Wall Paints. United States: ASTM International
- ASTM. (2012). D3359 Standard Test Methods for Measuring Adhesion by Tape Test. United States: ASTM International
- Cheng, H. N., Dowd, M. K., Selling, G. W., & Biswas, A. (2010). Synthesis of Cellulose Acetate from Cotton Byproducts. Carbohydrate Polymers Vol. 80 (2): Pg. 449-452.
- Egot, M. P. & Alguno, A. C. (2018). Preparation and Characterization of Cellulose Acetate from Pineapple. Key Engineering Materials 772:8-12.
- Gilbert, M. S., Palle, I, Liew, K. C. & Md. Salim, R. (2013). Chemical Composition of Acacia mangium Wood Fiber and Pulp. Proceedings of the International Forestry Graduate Students’ Conference. Pg. 84-86.
- Gilbert, M.S. & Palle, I. (2013). Cellulose Acetate Production from Acacia mangium Pulp. International Proceedings of Chemical, Biological and Environmental Engineering Vol. 58. Pg. 115-119.
- Indian Standard. (2002). IS 5807 Part 6: Methods of Test for Clear Finishes for Wooden Furniture. Painting, Varnishing, and Allied Finishes Sectional Committee. India: Indian Standards Institution.
- Kakroodi, A. R. & Sain, M. (2016). Lignin-Reinforced Rubber Composites. Lignin in Polymer Composites. Pg. 195-206.
- Ma, R., Pekarovicova, A., Fleming III, P. D., & Husovska, V. (2017). Preparation and Characterization of Hemicellulose-Based Printable Films. Cellulose Chemistry and Technology Vol. 51 (9-10). Pg. 939-948.
- Ma, X. M., Lu, R., & Miyakoshi, T. (2014). Application of Pyrolysis Gas Chromatograph/Mass Spectrometry in Lacquer Research: A Review. Polymers Vol. 6: Pg. 132-144.
- Müller, M., Hrabě, P., Chotěborský, R., Herák, D. (2006). Evaluation of Factors Influencing Adhesive Bond Strength. Research in Agricultural Engineering Vol. 52 (1). Pg. 30-37.
- Shaikh, H. M., Pandare, K. V., Nair, G., Varma, A. J. (2009). Utilization of Sugarcane Bagasse Cellulose for Producing Cellulose Acetates: Novel Use of Residual Hemicellulose as Plasticizer. Carbohydrate Polymers Vol. 76 (1). Pg. 23-29.
- Swain, R. C., & Adams, P. (1940). Cellulose Acetate Coating Compositions. U.S. Patent No. 2426379: United States Patent Office.
- Zorll, U. (2006). Adhesion Testing. Coatings Technology: Fundamentals, Testing, and Processing Techniques. United States: CRC Press.