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International Biodeterioration & Biodegradation 115 (2016) 266e276

Contents lists available at ScienceDirect

International Biodeterioration & Biodegradation

journal homepage: www.elsevier.com/locate/ibiod

Evaluation of mold growth on sugarcane bagasse particleboards in
natural exposure and in accelerated test

c
d
Núbia Mireya Garz on-Barrero a, b ,M arcia Aiko Shirakawa , Sergio Brazolin ,
e
f
Ricardo Gomes de Freitas Nuno de Barros Pereira , Idemauro Antonio Rodrigues de Lara ,
Holmer Savastano Jr. g, *
a
Research Nucleus on Materials for Biosystems, Faculty of Animal Science and Food Engineering, University of S~ ao Paulo - USP, Av. Duque de Caxias Norte, n.
225, CEP 13635-900, Pirassununga, SP, Brazil
b
Research Group GESSA, Department of Environmental Sciences, Corporaci on Universidad de la Costa (CUC), Calle 58 # 55 e 66, Barranquilla, Colombia
c
Polytechnic School, University of S~ ao Paulo e USP, Av. Prof. Almeida Prado, Trav. 2, n. 83, Edif. Eng. Civil, Cidade Universit aria, CEP 05508-070, S~ ao Paulo,
SP, Brazil
d
Institute for Technological Research of the S~ ao Paulo State e IPT, Av. Prof. Almeida Prado, n. 532, Cidade Universit aria, CEP 05508-901, S~ ao Paulo, SP, Brazil
e
Institute for Technological Research of the S~ ao Paulo State e IPT, Av. Prof. Almeida Prado, n. 532, Cidade Universit aria, CEP 05508-901, S~ ao Paulo, SP, Brazil
f
Exact Sciences Department (LCE), Luiz de Queiroz College of Agriculture, ESALQ, University of S~ ao Paulo e USP, Av. P adua Dias, n. 11, CEP 13418-900,
Piracicaba, SP, Brazil
g
Research Nucleus on Materials for Biosystems, Faculty of Animal Science and Food Engineering, University of S~ ao Paulo e USP, A. Duque de Caxias Norte, n.
225, CEP 13635-900, Pirassununga, SP, Brazil
article i nf o abstract
Article history: The objective of this study was to investigate the performance of alternative sugarcane bagasse particle
Received 10 April 2016 board (BCP) using castor oil polyurethane resin in comparison with commercial medium density wood
Received in revised form
particle board (MDP) under natural and accelerated test conditions. The particle boards were evaluated
2 September 2016 after 12 months of exposure to natural weathering in Pirassununga (21.9965 S, 47.4262 W), Brazil and

Accepted 6 September 2016 by an accelerated mold growth test under laboratory conditions. The mold growth was quantified ac-
Available online 15 September 2016
cording to the Standards ASTM D 3273-12 (2012) and the results were evaluated by statistical analysis
through the Proportional Chances Model (PCM). For both materials, the surface coating with castor oil
Keywords:
Particleboard based bi-component polyurethane resin was less colonized than the non-coated materials; independent
Sugar cane bagasse of the particleboard type. Additionally, the bending test shows that the sugarcane bagasse particle boards
Accelerated decay test presents better performance of module of elasticity (MOR) (7.7 MPa) in comparison with the commercial
Castor oil polyurethane resin wood particle boards (3.6 MPa) after exposed to accelerated tests for mold colonization. The surface
Mold coating with castor oil based polyurethane resin reduces mold growth, therefore these results support
the potential use of this alternative resin both as a binder and as a surface coating in these particulate
materials. The particle boards fabricated with sugarcane bagasse and castor oil resin presented similar
mold colonization compared to the commercial wood particle boards.
© 2016 Elsevier Ltd. All rights reserved.
1. Introduction Nielsen et al., 2004; Johansson et al., 2012), different types of
woods (Hanada et al., 2003; Thelandersson et al., 2009; Gobakken
Mold grows in highly humid environments, being found in and Westin, 2008; Bok et al., 2013; Kartal et al., 2012;
different construction materials (Shirakawa et al., 2002, 2003; Nieuwenhuijzen et al., 2013) and wood composites (Hosseinaei
et al., 2012; Yang, 2010; Naumann et al., 2012). When mold grows
on the surface of different construction materials inside buildings,
they compromise aesthetics and cause health problems like asthma
* Corresponding author. and allergic rhinitis (Yang et al., 2007; Jaakkola et al., 2013;
E-mail addresses: ngarzon1@cuc.edu.co, nubiagarzon@usp.br (N.M. Garz on- Hernberg et al., 2014). Therefore it is important to seek solutions
Barrero), marcia.shirakawa@lme.pcc.usp.br (M.A. Shirakawa), brazolin@ipt.br
(S. Brazolin), rpereira@ipt.br (R.G.F.N. de Barros Pereira), idemauro@usp.br that reduce fungal growth on different construction materials.
(I.A.R. de Lara), holmersj@usp.br (H. Savastano). Currently in Brazil, the particle board industry uses reforested
http://dx.doi.org/10.1016/j.ibiod.2016.09.006
0964-8305/© 2016 Elsevier Ltd. All rights reserved.