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Improving the physical and mechanical properties of particleboards made from urea–glyoxal resin by addition of pMDI

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Abstract

The effect of pMDI on physical and mechanical properties of the particleboards made from urea–glyoxal resin was investigated. The nontoxic and ecofriendly urea–glyoxal (UG) resin was synthesized under weak acid conditions, and its different properties were measured. Then, pMDI at various contents (4, 6 and 8% on resin solids) was added to the UG resin prepared. The thermal and physicochemical properties of the resins prepared as well as their water absorption, flexural properties (flexural modulus and strength) and internal bond (IB) strength of the particleboard panels bonded with them were measured according to standard methods. According to the physicochemical results obtained, the addition of pMDI significantly accelerated the gel time and increased the viscosity and solids content of UG resins. Differential scanning calorimetry indicated that the addition of pMDI decreases the onset and curing temperatures of the UG resin. Physical analysis results of the panels indicated that the particleboards made from UG resins with isocyanate yielded lower water absorption when compared to those bonded with the control UG resins. Based on the findings of this research work, the mechanical properties of particleboard panels bonded with UG resins could be significantly enhanced by the addition of increasing percentages of pMDI. The panels having 8 wt% pMDI exhibited the highest flexural modulus, flexural strength and IB strength value and the lowest water absorption among all the panels prepared.

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References

  • Ballerini A, Despres A, Pizzi A (2005) Non-toxic, zero-emission tannin-glyoxal adhesives for wood panels. Holz Roh Werkst 63(6):477–478

    Article  CAS  Google Scholar 

  • Deng S, Du G, Li X, Pizzi A (2014) Performance and reaction mechanism of zero formaldehyde-emission urea–glyoxal (UG) resin. J Taiwan Inst Chem Eng 45(4):2029–2038

    Article  CAS  Google Scholar 

  • Despres A, Pizzi A, Vu C, Pasch H (2008) Formaldehyde-free aminoresin wood adhesives based on dimethoxyethanal. J Appl Polym Sci 110(6):3908–3916

    Article  CAS  Google Scholar 

  • Donaldson LA, Lomax TD (1989) Adhesive/fiber interaction in medium density fiberboard. Wood Sci Technol 23(4):371–380

    Article  CAS  Google Scholar 

  • Dziurka D, Mirski R (2014) Properties of liquid and polycondensed UF resin modified with pMDI. Drvna Indust 65(2):115–119

    Article  Google Scholar 

  • El Mansouri NE, Pizzi A, Salvado J (2007) Lignin-based wood panel adhesives without formaldehyde. Holz Roh Werkst 65(1):65–70

    Article  CAS  Google Scholar 

  • El Mansouri NE, Yuan Q, Huang F (2011) Study of chemical modification of alkaline lignin by the glyoxalation reaction. Bioresource 6(4):4523–4536

    Google Scholar 

  • Hauptmann M, Lubin JH, Stewart PA, Hayes RB, Blair A (2004) Mortality from solid cancers among workers in formaldehyde industries. Am J Epidemiol 159(12):1117–1130

    Article  PubMed  Google Scholar 

  • Kajita H, Mukudai J, Yano H (1991) Durability evaluation of particleboards by accelerated aging tests. Wood Sci Technol 25(3):239–249

    Article  CAS  Google Scholar 

  • Lei H, Du G, Pizzi A, Celzard A (2008) Influence of nanoclay on urea–formaldehyde resins for wood adhesive and its model. J Appl Polym Sci 109(4):2442–2451

    Article  CAS  Google Scholar 

  • Mansouri HR, Pizzi A, Leban JM (2006) Improved water resistance of UF adhesives for plywood by small pMDI additions. Holz Roh Werkst 64(3):218–220

    Article  CAS  Google Scholar 

  • Nacas AM, De Sousa RR, Spinace MA, Dos Santos DJ (2016) Effects of NCO:OH ratio on the mechanical properties and chemical structure of Kraft lignin-based polyurethane adhesive. J Adhes. doi:10.1080/00218464.2016.1177793

    Google Scholar 

  • Papadopoulos AN (2006) Property comparisons and bonding efficiency of UF and PMDI bonded particleboards as affected by key process variables. Bioresources 1(2):201–208

    Google Scholar 

  • Pizzi A, Walton T (1992) Non-emulsifiable, water-based diisocyanate adhesives for exterior plywood, part 1: novel reaction mechanisms and their chemical evidence. Holzforschung 46(6):541–547

    Article  CAS  Google Scholar 

  • Pizzi A, Valenzuela J, Westermeyer C (1993) Non-emulsifiables, water-based, diisocyanate adhesives for exterior plywood, part 2: industrial application. Holzforschung 47(1):69–72

    Article  Google Scholar 

  • Simon C, George B, Pizzi A (2002) Copolymerization in UF/pMDI adhesives networks. J Appl Polym Sci 86(14):3681–3688

    Article  CAS  Google Scholar 

  • Stephanou A, Pizzi A (1993) Rapid curing lignin-based exterior wood adhesives. Part I. Diisocyanates reaction mechanisms and application to panel products. Holzforschung 47(5):439–445

    Article  CAS  Google Scholar 

  • Wang S, Pizzi A (1997) Succinaldehyde-induced water resistance improvements of UF wood adhesives. Holz Roh Werkst 55(1):9–12

    Article  CAS  Google Scholar 

  • Younesi-Kordkheili H, Pizzi A (2016a) Properties of plywood panels bonded with ionic liquid-modified lignin–phenol–formaldehyde resin. J Adhes. doi:10.1080/00218464.2016.1263945

    Google Scholar 

  • Younesi-Kordkheili H, Pizzi A (2016b) A comparison between lignin modified by ionic liquids and glyoxalated lignin as modifiers of urea–formaldehyde resin. J Adhes. doi:10.1080/00218464.2016.1209741

    Google Scholar 

  • Younesi-Kordkheili H, Pizzi A (2016c) Acid ionic liquids as a new hardener in urea–glyoxal adhesive resins. Polymers 8(3):1–14

    Article  Google Scholar 

  • Younesi-Kordkheili H, Pizzi A (2017) Ionic liquids as enhancers of urea–glyoxal panel adhesives as substitutes for urea–formaldehyde resins. Eur J Wood Prod 75(3):481–483

    Article  CAS  Google Scholar 

  • Younesi-Kordkheili H, Behrooz R, Jalilvand M (2012) Using industrial waste of old corrugating containers paper recycling mill in composite panels manufacturing. J Reinf Plast Comp 31(12):855–860

    Article  Google Scholar 

  • Younesi-Kordkheili H, Farsi M, Rezazadeh Z (2013) Physical, mechanical and morphological properties of polymer composites manufactured from carbon nanotubes and wood flour. Compos Part B Eng 44(1):750–755

    Article  Google Scholar 

  • Younesi-Kordkheili H, Pizzi A, Niyatzade G (2015a) Reduction of formaldehyde emission from particleboard by phenolated kraft lignin. J Adhes. doi:10.1080/00218464.2015.1046596

    Google Scholar 

  • Younesi-Kordkheili H, Kazemi-Najafi S, Eshkiki RB, Pizzi A (2015b) Improving urea formaldehyde resin properties by glyoxalated soda bagasse lignin. Eur J Wood Prod 73(1):77–85

    Article  CAS  Google Scholar 

  • Younesi-Kordkheili H, Kazemi-Najafi S, Eshkiki RB (2015c) Influence of nanoclay on urea–glyoxalated lignin–formaldehyde resins for wood adhesive. J Adhes. doi:10.1080/00218464.2015.1079521

    Google Scholar 

  • Younesi-Kordkheili H, Pizzi A, Honarbakhsh-Raof A, Nemati F (2016) The effect of modified soda bagasse lignin by ionic liquid on properties of urea–formaldehyde resin as wood adhesive. J Adhes. doi:10.1080/00218464.2016.1188284

    Google Scholar 

  • Younesi-Kordkheili H, Pizzi A, Mohammadghasemipour AM (2017) Improving properties of ionic liquid-treated lignin–urea–formaldehyde resins by small addition of isocyanate for wood adhesive. J Adhes doi:10.1080/00218464.2017.1282350

    Google Scholar 

  • Zhang L, Steinmaus C, Eastmond DA, Xin XK, Smith MT (2008) Formaldehyde exposure and leukemia: a new meta-analysis and potential mechanisms. Mutat Res 681(2–3):150–168

    PubMed  Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, Semnan University, Semnan, Iran

    Hamed Younesi-Kordkheili

  2. LERMAB, University of Lorraine, Épinal, France

    Antonio Pizzi

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  1. Hamed Younesi-Kordkheili
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  2. Antonio Pizzi
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Correspondence to Hamed Younesi-Kordkheili.

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Younesi-Kordkheili, H., Pizzi, A. Improving the physical and mechanical properties of particleboards made from urea–glyoxal resin by addition of pMDI. Eur. J. Wood Prod. 76, 871–876 (2018). https://doi.org/10.1007/s00107-017-1242-3

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  • DOI: https://doi.org/10.1007/s00107-017-1242-3

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