2018
DOI: 10.1002/pc.24849
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Biocomposites based on cellulose and starch modified urea‐formaldehyde resin: Hydrolytic, thermal, and radiation stability

Abstract: Two biocomposites based on cellulose (UFC) and starch modified urea formaldehyde (UFS) resin (F/U ratio of 0.8) were synthesized using the same procedure. The hydrolitical, thermal, and radiation stability of biocomposites are determined. Also, released formaldehyde during the acid hydrolysis is determined. Biocomposites based on modified UF resin have been irradiated with (50 kGy). Cellulose modified UF resin after γ‐radiation has 1.38% released formaldehyde; unmodified UF resin has 2.21% released formaldehyd… Show more

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Cited by 23 publications
(19 citation statements)
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“…Figure 2 was the infrared spectrum of waterborne acrylic resin microcapsules. The special absorption peaks around 3355 cm −1 , 1560 cm −1 were the absorption peaks of N–H, C–N in urea-formaldehyde resin [ 23 , 24 ]. The 1730 cm −1 represented the characteristic peak of C=O in waterborne acrylic resin [ 25 ].…”
Section: Resultsmentioning
confidence: 99%
“…Figure 2 was the infrared spectrum of waterborne acrylic resin microcapsules. The special absorption peaks around 3355 cm −1 , 1560 cm −1 were the absorption peaks of N–H, C–N in urea-formaldehyde resin [ 23 , 24 ]. The 1730 cm −1 represented the characteristic peak of C=O in waterborne acrylic resin [ 25 ].…”
Section: Resultsmentioning
confidence: 99%
“…To determine the blank, the solution without resin was determined according the same procedure, and the result was taken into account in calculations. The percentage of free FA content was calculated from Equation ) given below: FA0.25em()%=italicVc0.25emE×1001000a where V is the volume of HCl (cm 3 ), c is the concentration of HCl (mold m −3 ), E is the equivalent weight of FA, and a is the weight of the samples (g) 12 …”
Section: Methodsmentioning
confidence: 99%
“…As a criterion to describe the quality of the chemical bond in wood products, the differential scanning calorimetry (DSC) analysis has proved that the glass-transition temperature decreases due to adding starch to the UF resin because more UF in the adhesive has increased the melting point of the adhesive due to more cross-linkages being created by UF compared to the modified starch [10]. In addition, when applying a stronger treatment of oxidation, instead of the formation of (−CH 2 −O−CH 2 −) ether bridges that are more likely to occur in the more moderate conditions of oxidation treatment, (−CH 2 −) methylene bridges form at high pressure temperature [58] that can increase the bonding strength. However, it seems that it is not unlimited, and the effect of oxidation is that the stronger treatment is reversed due to the destruction of the glycoside bond and opening of hemiacetal loop of starch.…”
Section: Predicting Mor By Annmentioning
confidence: 99%