Does the Addition of Cotton Wastes Affect the Properties of Particleboards?

Scatolino, Mário Vanoli; Protásio, Thiago de Paula; Souza, Valéria Maria; Farrapo, Camila Laís; Guimarães Junior, José Benedito; Soratto, Déborah; Mendes, Rafael Farinassi; Mendes, Lourival Marin

doi:10.1590/2179-8087.030017

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Original Article, Wood Science and Technology • Floresta Ambient. 26 (2) • 2019 • https://doi.org/10.1590/2179-8087.030017 copy

Does the Addition of Cotton Wastes Affect the Properties of Particleboards?

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

A wide range of materials for the development of new products can be obtained from natural resources. Good examples of these materials are lignocellulosic wastes, which are a good alternative for the production of particleboards. This study aimed to evaluate the feasibility of using cotton wastes in association to eucalyptus particles in the production of particleboards. Cotton waste proportions used were 0, 10, 20 and 30%. Urea formaldehyde (UF) adhesive was applied at 12%, based on dry the weight of particles. Physical and mechanical tests were performed in order to evaluate panels. Water Absorption (2 and 24 h) and Internal Bond (IB) showed not significant effect with increased percentage of cotton waste. Thickness Swelling (2 and 24 h) of particleboards increased with increased percentage of waste material. The Modulus of Elasticity for cotton waste particleboards ranged from 726.47 ± 99.98 to 205.12 ± 66.24 MPa, while the Modulus of Rupture ranged from 8.63 ± 1.39 to 3.87 ± 0.75 MPa. According to results, cotton wastes could be added to particleboards up to the percentage of 9%, being indicated for the manufacture of some types of furniture such as doors and sides.

Keywords:
lignocellulosic waste; cotton culture; reuse; biomass

Eucalyptus wood %	Cotton waste %
100	0
90	10
80	20
70	30

Properties	Standard
Water Absorption after two and twenty-four hours of immersion (WA2h and WA24h) ^a a Average of 2 samples per panel;	ASTM - D1037 ( ASTM, 2006 American Society for Testing and Materials – ASTM. ASTM-D1037. Standard Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials . Rio de Janeiro: ABNT; 2006. )
Thickness Swelling after two and twenty-four hours of immersion (TS2h and TS24h) ^a a Average of 2 samples per panel;
Internal Bond (IB) ^b b Average of 6 samples per panel;
Modulus of Rupture (MOR) and Modulus of Elasticity (MOE) ^c c Average of 4 samples per panel.	DIN 52362 ( DIN, 1982 Deutsches Institut für Normung – DIN. DIN 52362: Testing of wood chipboards bending test, determination of bending strength. Germany: Deutsches Institut für Normung, 1982. Normen fur Holzfaserplaten Spanplatten Sperrholz. )

Material	Basic Density (g/cm³)	Extractives	Lignin	Ashes
Material	Basic Density (g/cm³)	--------------%---------------
Cotton waste	0.19 ± 0.09 ^* * Standard deviation.	22.32 ± 1.30	31.07 ± 0.20	7.75 ± 0.09
Eucalyptus wood	0.45 ± 0.03	5.11 ± 0.87	27.27 ± 0.32	0.51 ± 0.08

Cotton waste (%)	Apparent density (g/cm³)	Compaction ratio
0	0.53 ± 0.02 ^* * Standard deviation; Means followed by the same letter in the column do not differ statistically by the Scott-Knott test at 5% significance. A	1.2 ± 0.04 A
10	0.54 ± 0.02 A	1.3 ± 0.05 B
20	0.55 ± 0.06 A	1.4 ± 0.09 C
30	0.52 ± 0.02 A	1.4 ± 0.06 C

Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro Rodovia BR 465 Km 7, CEP 23897-000, Tel.: (21) 2682 0558 | (21) 3787-4033 - Seropédica - RJ - Brazil
E-mail: floram@ufrrj.br

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[1] Mário Vanoli Scatolino Departamento de Ciências Florestais, Universidade Federal de Lavras – UFLA, Campus Universitário, CP 3037, CEP 37200-000, Lavras, MG, Brasil e-mail: mario_paraiso@hotmail.com