scholarly journals Study on Dimensional Stability of Particleboard Made Using Glutardialdehyde Modified Corn Starch as the Binder at Various Relative Humidity

2018 ◽  
Vol 7 (2.15) ◽  
pp. 19
Author(s):  
Mohd Hazim Mohamad Amini ◽  
Rokiah Hashim ◽  
Nurul Syuhada Sulaiman ◽  
Mazlan Mohamed ◽  
Mohmad Najmi Masri ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Dimensional Stability ◽  
Hevea Brasiliensis ◽  
Corn Starch ◽  
Urea Formaldehyde ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Modified Starch

The objective of the study was to evaluate the dimensional stability of experimental particleboard panels made from rubberwood (Hevea brasiliensis) using modified starch as binder. Panels were manufactured using 15% corn starch modified with glutardialdehyde and 13% modified starch with 2% Urea Formaldehyde resin as improvement. The particleboards were tested for their dimensional stability towards moisture. Results found that the 2% replacement of modified starch with urea formaldehyde resin showed a little increased in dimensional stability compared to using glutardialdehyde modified corn starch only as the binder. Therefore, this study indicated that combination of modified corn starch and urea formaldehyde resin can have a potential to be used as an improved binder to produce particleboard panels with accepted properties.  

Effect of Urea Formaldehyde Addition to the Dimensional Stability of Particle Board Made Using Glutardialdehyde Modified Corn Starch as Binder with FT-IR Analysis

2016 ◽  
Vol 840 ◽  
pp. 108-111 ◽  
Author(s):  
Mohd Hazim Mohamad Amini ◽  
Rokiah Hashim ◽  
Nurul Syuhada Sulaiman ◽  
Salim Hiziroglu ◽  
Othman Sulaiman ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Dimensional Stability ◽  
Hevea Brasiliensis ◽  
Corn Starch ◽  
Urea Formaldehyde ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Modified Starch ◽  
Particle Board ◽  
Experimental Particle

The objective of the study was to evaluate the dimensional stability of experimental particle board panels made from rubberwood (Hevea brasiliensis) using modified starch as binder. Panels were manufactured using 15% corn starch modified with glutardialdehyde and 13% modified starch with 2% Urea Formaldehyde resin as improvement. The particle boards were tested for their dimensional stability towards moisture. Results found that the 2% replacement of modified starch with urea formaldehyde resin showed increment in dimensional stability compared to using glutardialdehyde modified corn starch only as the binder, recorded at 39.38 % and 23.47 % for particleboard with 0.80 g/cm3 density after exposed to 75% and 95 % relative humidity. Therefore, this study indicated that combination of modified corn starch and urea formaldehyde resin can have a potential to be used as an improved binder to produce particle board panels with accepted properties.The objective of the study was to evaluate the dimensional stability of experimental particle board panels made from rubberwood (Hevea brasiliensis) using modified starch as binder. Panels were manufactured using 15% corn starch modified with glutardialdehyde and 13% modified starch with 2% Urea Formaldehyde resin as improvement. The particle boards were tested for their dimensional stability towards moisture. Results found that the 2% replacement of modified starch with urea formaldehyde resin showed increment in dimensional stability compared to using glutardialdehyde modified corn starch only as the binder, recorded at 39.38 % and 23.47 % for particleboard with 0.80 g/cm3 density after exposed to 75% and 95 % relative humidity. Therefore, this study indicated that combination of modified corn starch and urea formaldehyde resin can have a potential to be used as an improved binder to produce particle board panels with accepted properties.

scholarly journals Citric acid-modified starch as an environmentally friendly binder for wood composite making

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 4234-4248 ◽  
Author(s):  
Mohd Hazim Mohamad Amini ◽  
Rokiah Hashim ◽  
Nurul Syuhada Sulaiman ◽  
Mazlan Mohamed ◽  
Othman Sulaiman
Keyword(s):  
Citric Acid ◽  
Corn Starch ◽  
Urea Formaldehyde ◽  
Modulus Of Rupture ◽  
Bending Test ◽  
Formaldehyde Resin ◽  
Infrared Analysis ◽  
Modified Starch ◽  
Wood Composite ◽  
Wood Composites

Conventional formaldehyde-based wood binders for composites have been reported as hazardous to humans after prolonged exposure to released fumes. Therefore, this research was conducted to evaluate suitability of citric acid-modified corn starch as binder for wood composites. Corn starch was gelatinized before it was reacted with citric acid, mixed with wood particles, pre-pressed, and finally hot-pressed before characterization and evaluation. Through Fourier transform infrared analysis, ester groups were detected at 1736.8 cm-1, which was characteristic for starch modified with citric acid. Bending test results on citric acid modified corn starch wood composites showed 16.8 N/mm2 and 4020 N/mm2 for modulus of rupture and modulus of elasticity, respectively. Addition of 2% urea-formaldehyde increased these numbers to 17.9 N/mm2 and 5190 N/mm2, respectively. Internal bonding additionally increased from 0.88 N/mm2 to 0.95 N/mm2. All test specimens passed mechanical strength requirements by JIS A 5908 (2003). Based on the demand specification for the final usage of the wood composite, it can be concluded that citric acid modified starch is a possible successful choice as the adhesive, with or without additional urea formaldehyde resin.

scholarly journals Fungal Resistance of Particleboard Made Using Glutardialdehyde Modified Corn Starch as the Binder with the Aid of Urea Formaldehyde Resin

2018 ◽  
Vol 7 (2.15) ◽  
pp. 23
Author(s):  
Mohd Hazim Mohamad Amini ◽  
Rokiah Hashim ◽  
Nurul Syuhada Sulaiman ◽  
Othman Sulaiman ◽  
Mohamed Bashree Abu Bakar ◽  
...  
Keyword(s):  
Corn Starch ◽  
Urea Formaldehyde ◽  
Schizophyllum Commune ◽  
Urea Formaldehyde Resin ◽  
Fungal Resistance ◽  
Formaldehyde Resin ◽  
Human Lungs ◽  
Biological Attack ◽  
Initial Resistance ◽  
Resin Binder

Particleboard is a popular wood composite made using mixtures of wood particles and resin, binder or adhesives, pressed at high temperature to cured. Despite its popularity, formaldehyde-based adhesives used in the formulations lead to cancerous effect as the formaldehyde fumes released from the unreacted chemicals travel into human lungs. Therefore this study tries to reduce the utilization of formaldehyde-based resin by replacement of a significant portion of the binder with glutardialdehyde modified corn starch as the binder. However, this practice could lower the durability of the particleboards against biological attack. Therefore, this study evaluates the fungal resistance of the particleboard panels. Panels were manufactured using 83:15:2 ratio of wood, corn starch-modified with glutardialdehyde and formaldehyde resin, respectively, as an improvement. Four types of wood-degrading fungal were chosen including Trametes versicolor, Formitopsis palustris, Schizophyllum commune and Pycnoporus sangineus. Some of the particleboard showed a little increased in fungal resistance when 2% urea formaldehyde was added, compared to using glutardialdehyde modified corn starch and starch only as the binder. Nine out of twelve samples showed a decrement in fungal degradation by using glutardialdehyde modified starch as the binder. Meanwhile, 6 out of 12 samples showed higher fungal resistance after additional of 2% urea formaldehyde in the binder formulation. Based on the results, combination of modified corn starch and urea formaldehyde resin could have a potential to be used in particleboard making without reducing the initial resistance towards fungal attack.  

Glutardialdehyde Modified Corn Starch – Urea Formaldehyde Resin as a Binder for Particleboard Making

2015 ◽  
Vol 754-755 ◽  
pp. 89-93 ◽  
Author(s):  
M.H.M. Amini ◽  
R. Hashim ◽  
N.S. Sulaiman ◽  
S. Hiziroglu ◽  
Othman Sulaiman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Elasticity Modulus ◽  
Corn Starch ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Urea Formaldehyde Resin ◽  
Modulus Of Rupture ◽  
Formaldehyde Resin ◽  
Japanese Industrial Standard ◽  
Internal Bonding Strength

The objective of the study was to characterize and to evaluate physical and mechanical properties of experimental particleboard panels made from rubberwood (Heveabrasiliensis) using modified starch-urea formaldehyde as binder. Panels were manufactured using 13% corn starch modified with glutardialdehyde with addition of 2 % urea formaldehyde resin and tested for their physical and mechanical properties. All of the particleboards satisfied the Japanese Industrial Standard which required 2000 N/mm2, 8.0 N/mm2and 0.15 N/mm2for modulus of elasticity, modulus of rupture and internal bonding strength, respectively. The mechanical properties were comparable to those made using 15 % urea formaldehyde resin with reduction of formaldehyde fume was over 50 %.

scholarly journals Effects of Three Biomass Fillers on the Properties of Melamine Modified Urea-Formaldehyde Resin

2020 ◽  
Vol 782 ◽  
pp. 022077
Author(s):  
Shanfeng Xu ◽  
Sanshan Xia ◽  
Yuzhu Chen ◽  
Hui Xiao ◽  
Maoyu Yi ◽  
...  
Keyword(s):  
Urea Formaldehyde ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Modified Urea

scholarly journals Calcium carbonate modified urea–formaldehyde resin adhesive for strength enhanced medium density fiberboard production

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 25010-25017
Author(s):  
Li Lu ◽  
Yan Wang ◽  
Tianhua Li ◽  
Supeng Wang ◽  
Shoulu Yang ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Urea Formaldehyde ◽  
Medium Density Fiberboard ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Medium Density ◽  
Ionic Bond ◽  
Resin Adhesive ◽  
Uf Resin ◽  
Modified Urea

Reactions between CaCO3 and CH2O2 during polycondensation of UF resin produce Ca2+. Ionic bond complexation binds Ca2+ with UF resin. The UF resin crystalline percentage decreases from 26.86% to 22.71%. IB strength of resin bonded fiberboard increases from 0.75 to 0.94 MPa.

Effect of spent sulfite liquor on urea-formaldehyde resin performance

2018 ◽  
Vol 136 (17) ◽  
pp. 47389 ◽  
Author(s):  
Ana Maria Ferreira ◽  
João Pereira ◽  
Margarida Almeida ◽  
João Ferra ◽  
Nádia Paiva ◽  
...  
Keyword(s):  
Urea Formaldehyde ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Spent Sulfite Liquor

Preparation and Characterization of Hexadecane Microcapsule Phase Change Materials by In Situ Polymerization

2013 ◽  
Vol 815 ◽  
pp. 367-370 ◽  
Author(s):  
Xiao Qiu Song ◽  
Yue Xia Li ◽  
Jing Wen Wang
Keyword(s):  
Particle Size ◽  
Phase Change ◽  
Phase Change Materials ◽  
In Situ Polymerization ◽  
Urea Formaldehyde ◽  
Agitation Speed ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Mass Ratio

Hexadecane microcapsule phase change materials were prepared by the in-situ polymerization method using hexadecane as core materials, urea-formaldehyde resin and urea-formaldehyde resin modified with melamine as shell materials respectively. Effect of melamine on the properties of microcapsules was studied by FTIR, biomicroscopy (UBM), TGA and HPLC. The influences of system concentration, agitation speed and mass ratio of wall to core were also investigated. The results indicated that hexadecane was successfully coated by the two types of shell materials. The addition of melamine into the urea-formaldehyde resin microcapsule reduced microcapsule particle size and microencapsulation efficiency. The influences of factors such as system concentration, agitation speed and mass ratio of wall to core to different wall materials microcapsules presented different variety trends of the microcapsule particle size.

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