Some of the properties of oriented strandboard manufactured using kraft lignin phenolic resin

Çavdar, Ayfer Dönmez; Kalaycıoğlu, Hülya; Hızıroǧlu, Salim

doi:10.1016/j.jmatprotec.2007.10.039

Cited by 76 publications

(21 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many such studies have been performed in laboratory conditions on single opening presses and have been focused mainly on the effect of board density (Han et al 2007;Suzuki et al 2007), strand length and orientation, strand combination (Febrianto et al 2010;Akrami et al 2014), adhesive ratio (Cavdar et al 2008;Gündüz et al 2011), and new raw material (Han et al 2005;Febrianto 2010;Mulik and Febrianto 2013), on physical and mechanical properties of OSB. Few studies have reported data derived from commercially tested OSB board concerning their mechanical properties and behavior under different conditions (Thomas 2001;Wang et al 2003Wang et al , 2004Rebollar et al 2007;Hrázskýand Král 2011).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Speed and Press Factor on Oriented Strand Board Performance in Continuous Press

et al. 2014

View full text Add to dashboard Cite

a Three-layer cross-oriented strand boards, OSB type 3 of 10 mm thick, were industrially manufactured from a mixture of wood species including 50% softwoods, 25% beech, and 25% low hardwoods, using a continuous press line. The effects of line speed and press factor on physical and mechanical properties of OSB/3 (exterior grade) were evaluated, keeping nearly constant the face-core adhesive ratio. The manufactured boards were classified into five groups depending on the pressing parameters. The experimental results showed that all mechanical properties increased, with increasing press factor and decreasing line speed. The ratios of bending strength (MOR) and the modulus of elasticity (MOE) parallel to perpendicular were 1.73 to 1.89 and 2.18 to 2.24, respectively. No significant differences in thickness swell and water absorption were observed. The lowest density was achieved at higher speed, although there was no large variation in densities between groups. Thickness swelling and internal bond after boil test exceeded the EN 300 standard requirements for OSB/3 moisture resistance, excepting a few boards. The results revealed that a correlation between speed and press factor is necessary in order to improve mechanical properties and to keep the physical performance of boards within a limited range of values.

show abstract

Section: Introductionmentioning

confidence: 99%

The Influence of Speed and Press Factor on Oriented Strand Board Performance in Continuous Press

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The MOE and MOR values of the OSB bonded with pMDI resin were found to be 3916.2 N/mm 2 and 25.117 N/mm 2 for the commercial OSB panel, and 7018.9 N/mm 2 and 42.5 N/mm 2 for the OSB from red maple, respectively (Paredes et al 2008). Also, the average values of the MOE and MOR were found to be 2401 N/mm 2 and 22.03 N/mm 2 , respectively, for the P. euroamericana strands made with PF resin (Cavdar et al 2008). After conditioning the panels, the IB strength values of the studied OSB/3 ranged from 0.32 N/mm 2 to 0.37 N/mm 2 , which were slightly above the minimum requirements for OSB/3 (0.34 N/mm 2 ) according to EN 300 (2006).…”

Section: Physical and Mechanical Properties Of The Osbsmentioning

confidence: 84%

“…These values were below the maximum values required by the standard (15% for OSB/3 and 12% for OSB/4). Other studies have reported that the values of the TS were 14.0% and 11.6% for commercial OSB and OSB made from red maple strands, respectively (Paredes et al 2008), and 12.99% for OSB made from P. euroamericana strands (Cavdar et al 2008). The TS ranged from 2.63% to 7.60% for OSB made from bamboo strands and bonded with pMDI (Sumardi and Suzuki 2014).…”

mentioning

confidence: 91%

Some Physico-mechanical Characteristics of Uncoated OSB ECO-products Made from Scots Pine (Pinus sylvestris L.) and Bonded with pMDI Resin

et al. 2018

View full text Add to dashboard Cite

Some mechanical and physical properties and the formaldehyde content of uncoated oriented strand boards (OSBs) that were made from Scots pine (Pinus sylvestris L.), manufactured with different thicknesses, and bonded with polymeric methylene di(phenyl isocyanate) (pMDI) resin were evaluated. All of the mechanical and physical properties were affected significantly by the OSB type (3 and 4) and thickness of the panels, except for the thickness swelling after 24 h and measured formaldehyde content. The measured mechanical and physical properties of the OSB panels satisfied the standard requirements. The densities of the panels ranged from 554.2 kg/m 3 to 580.2 kg/m 3 and from 573.8 kg/m 3 to 610.7 kg/m 3 for OSB/3 and OSB/4, respectively, which met the standard requirements. The measured mechanical and physical properties of the OSB/4 panels were higher than those of the OSB/3 panels, but there were no differences in the thickness swelling after 24 h and measured formaldehyde content. Low formaldehyde contents were found for OSB/3 (0.00 mg/100 g and 0.29 mg/100 g) and OSB/4 (0.18 mg/100 g and 0.47 mg/100 g).

show abstract

“…It also contains free phenolic and aliphatic hydroxyl groups that can form a quinone methide intermediate, which reacts with an aldehyde, tannin, phenol, or isocyanate group with heating under alkaline conditions (Ballerini et al 2005;El Mansouri 2007a;Abdelwahab and Nassar 2011;Mansouri et al 2011). Due to these chemical characteristics, lignin is a good starting material for wood adhesives (Cetin and Ozmen 2002;Cavdar et al 2008). A study has been conducted to investigate the potential of using kraft lignin substituted phenol formaldehyde (PF) resin to produce experimental aspen oriented strand board (OSB) panel (Cavdar et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Due to these chemical characteristics, lignin is a good starting material for wood adhesives (Cetin and Ozmen 2002;Cavdar et al 2008). A study has been conducted to investigate the potential of using kraft lignin substituted phenol formaldehyde (PF) resin to produce experimental aspen oriented strand board (OSB) panel (Cavdar et al 2008). The authors reported that the properties of aspen OSB panel bonded with kraft lignin substituted PF resin (50% of phenol was substituted by kraft lignin) including bending strength, internal bonding strength, thickness swelling, and water absorption, met the minimum requirements specified in the related standards, and they were comparable to those commercially manufactured OSB panels.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Thermal Stability of Glyoxalated Alkali Lignin-Polyvinylpyrrolidone Resins

et al. 2016

View full text Add to dashboard Cite

Natural, renewable, and non-toxic lignin-based resin was synthesized through copolymerization with monomeric N-vinyl-2-pyrrolidone (VP) in the presence of benzoyl peroxide (BPO) as the free radical initiator. Glyoxalated lignin was used as the feedstock. The mechanism of copolymerization between the glyoxalated alkali lignin and VP monomer was determined through Fourier-transform infrared spectroscopy (FT-IR). The optimum amount of VP monomer used and the reflux time required in the synthesis process were determined through thermogravimetric analysis (TGA). In the presence of BPO, copolymerization between glyoxalated alkali lignin and VP monomer was accomplished via the formation of ether linkages in a condensation reaction at pH 7.0. More ether linkages were formed with higher amounts of VP monomer and longer reflux times. The addition of VP monomer into glyoxalated alkali lignin increased its thermal stability. FT-IR and TGA indicated that 0.012 moles of VP monomer and an 8-h reflux time were optimum conditions for the synthesis of glyoxalated alkali lignin-polyvinylpyrrolidone resins.

show abstract

Some of the properties of oriented strandboard manufactured using kraft lignin phenolic resin

Cited by 76 publications

References 12 publications

The Influence of Speed and Press Factor on Oriented Strand Board Performance in Continuous Press

The Influence of Speed and Press Factor on Oriented Strand Board Performance in Continuous Press

Some Physico-mechanical Characteristics of Uncoated OSB ECO-products Made from Scots Pine (Pinus sylvestris L.) and Bonded with pMDI Resin

Synthesis and Thermal Stability of Glyoxalated Alkali Lignin-Polyvinylpyrrolidone Resins

Contact Info

Product

Resources

About