scholarly journals PENGARUH PENAMBAHAN RESORSINOL PADA PEMBUATAN PEREKAT LIKUIDA SABUT KELAPA

2015 ◽  
Vol 3 (4) ◽  
pp. 37-43
Author(s):  
Mutiara Istiqomah ◽  
Netti Herlina
Keyword(s):  
Phenol Formaldehyde ◽  
Adhesive Force ◽  
Phenol Formaldehyde Resin ◽  
Solid Content ◽  
Formaldehyde Resin ◽  
Liquid Form ◽  
Third Stage ◽  
Ft Ir ◽  
Coconut Coir ◽  
Two Stages

Liquid adhesive coconut coir is the result of a reaction between lignin powder material used with aromatic compounds at high temperatures in order to obtain a solution that can be used as an adhesive. This study aims to investigate the characteristics of liquid adhesive of coconut coir (LACC) qualities  and determine the effect of resorcinol in the manufacture of adhesives LACC. The study was conducted in three phases: the first stage of coir manufacturing particles, which at this stage coir made into particles of 100 mesh, adhesive manufacturing second stage LACC which at this stage there are two stages of the liquefaction reaction coir and polymerization, and the third stage addition of resorcinol LACC into the adhesive. The variables used in this study is the addition of variable rate resorcinol at 10, 20, 30% by weight. Variables - variables that were analyzed pH, viscosity, spesific gravity, solid content, formaldehyde-free rate and compound analysis using FT-IR adhesive LACC to conditions without the addition of resorcinol and with the addition of 30% resorcinol. The results showed that the addition of resorcinol LACC influence on the resulting adhesive, which has a liquid form, the pH ranged from 12.6 to 10.6, 43,867- 131.712 cps viscosity, specific gravity of 1.252 to 1.258, solid content 46.67 to 80%, from 1.952 to 1.051% formaldehyde content. FT-IR results showed similarity LACC adhesive force phenol formaldehyde resin, namely the presence of the OH group, C = H of the aromatic ring, of methylene CH, CO from ether and fenolic compound.

New Strategy toward Novel Hyperbranched Phenol-Formaldehyde Resin: Synthesis, Characterization and Curing Study

2007 ◽  
Vol 29-30 ◽  
pp. 177-180
Author(s):  
Samaresh Ghosh
Keyword(s):  
Phenol Formaldehyde ◽  
Flow Behavior ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Scanning Calorimetry ◽  
Elemental Analyses ◽  
New Strategy ◽  
Ft Ir ◽  
First Time ◽  
Tof Ms

Novel hyperbranched phenol-formaldehyde (HBPF) resin 1 has been prepared for the first time. Thorough characterizations (FT-IR, NMR, HPLC, MALDI-TOF MS and elemental analyses and rheological flow behavior) were performed to ascertain the structure of HBPF 1. The condensationcuring event of HBPF with diglycidylether of bisphenol-A (DGEBA) has been studied by differential scanning calorimetry (DSC) technique.

Effect of Technology Factors on the Resin Impregnation Results of Poplar

2013 ◽  
Vol 750-752 ◽  
pp. 2352-2356
Author(s):  
Jian Han ◽  
Kai Neng Liu ◽  
Xi Tao Gao
Keyword(s):  
Phenol Formaldehyde ◽  
Urea Formaldehyde ◽  
Weight Percent Gain ◽  
Weight Percent ◽  
Phenol Formaldehyde Resin ◽  
Solid Content ◽  
Formaldehyde Resin ◽  
Test Pieces ◽  
Resin Impregnation ◽  
Impregnation Temperature

Aimed to improve the properties of Poplar, this study, taking phenol-formaldehyde resin (PF) and urea-formaldehyde resin (UF) as impregnation resin, probed the effect of the technology factors-vacuum time, solid content of resin, impregnation temperature and time on the impregnation results of Poplar, and the relationship between the resin and the wood was researched through infrared spectrum. The weight percent gain (WPG) of test-pieces increased with vacuum time extending, and WPG of the test-pieces were greatest when the solid content of resin was 30%, and the impregnation temperature was 25-30°C. when the impregnation time extended from 3 h to 9 h, WPG of the test-pieces presented increase trend which wasnt obvious. In this wood impregnated resin, the reaction between the resin and the hydroxy in wood formed ether bond binding, which proved that the resin and the wood occurred the chemical reaction.

Pyrolysis Behavior of Boron-Containing Phenol-Formaldehyde Resin (BPFR) Modified by B2O3

2014 ◽  
Vol 616 ◽  
pp. 315-318 ◽  
Author(s):  
Qin Lu ◽  
Fei Chen ◽  
Qiang Shen ◽  
Yan Qin ◽  
Zhi Xiong Huang ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Phenol Formaldehyde ◽  
Structural Evolution ◽  
Phenol Formaldehyde Resin ◽  
Resin Matrix ◽  
Formaldehyde Resin ◽  
X Ray Diffraction ◽  
Ft Ir ◽  
Decomposition Behavior ◽  
Ft Ir Spectroscopy

In this study, pure boron-containing phenol-formaldehyde resin (BPFR) and boron oxide (B2O3) modified BPFR have been pyrolyzed at elevated temperatures in air and their thermal decomposition behavior is mainly explored. The structural evolution and chemical composition change during pyrolysis are characterized by thermal gravity (TG), Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD) and field emission scanning electron microscope (FE-SEM). It is shown that the mass residues of pure BPFR are 27.1 and 8.7 wt.% after being pyrolyzed at 600 and 1000 °C for 2 h, respectively. In comparison with the pure BPFR, the mass residue of B2O3 modified BPFR is obviously higher, with the values of 72.9 and 39.7 wt.% at 600 °C and 1000 °C, respectively. The results of FT-IR prove the degradation and failure of the resin matrix are mainly resulted from the fracture of methylene and the release of small molecules. The XRD characterization shows the residues are amorphous carbon and B2O3. FE-SEM exhibits the melting B2O3 layer formed on the surface of the samples which could prevent oxygen from diffusing into composites during oxidation to some extent.

Preparation and Characterization of Lignin from Malaysian Coconut Coir Husk (CCH) as a Potential Precursor in Phenol-Formaldehyde (Phenolic) Resins for the Plastics Industry

2016 ◽  
Vol 1133 ◽  
pp. 583-587 ◽  
Author(s):  
Nur Fatin Nabila Saari ◽  
Dalina Samsudin ◽  
Nor Mazlina Abdul Wahab ◽  
Noor Aishatun Majid ◽  
Rusli Daik ◽  
...  
Keyword(s):  
Phenolic Resin ◽  
Phenol Formaldehyde ◽  
Lignin Content ◽  
Natural Fibre ◽  
Phenol Formaldehyde Resin ◽  
High Yield ◽  
Formaldehyde Resin ◽  
Phenolic Resins ◽  
Coconut Coir ◽  
The Fourier Transform

Coconut coir husk (CCH) was chosen to extract it lignin due to high lignin content comparable with other natural fibre. The lignin was extracted and its utilization in production of phenolic resin was investigated. The percentage extracted lignin obtained in this studied was 38.1% which indicated the high yield of lignin. Two phenolic resins were prepared, which are phenol-formaldehyde resin and lignin-formaldehyde resin. The functional group present in the lignin and both phenolic resins were further analyzed using the Fourier Transform Infrared Spectroscopy (FTIR). The findings from the infrared spectra of the lignin-formaldehyde resin were similar to the phenol-formaldehyde resin. These indicate that lignin can be partially used as phenol in phenolic resin synthesis.

scholarly journals Preparation, morphology, FTIR and performance properties of foaming particleboard

2021 ◽  
Vol 67 (1) ◽  
Author(s):  
Xiaoyu Bi ◽  
Runzhou Huang
Keyword(s):  
Phenol Formaldehyde ◽  
Critical Role ◽  
Particle Surface ◽  
Chemical Properties ◽  
Phenol Formaldehyde Resin ◽  
Solid Content ◽  
Formaldehyde Resin ◽  
Foaming Agent ◽  
Resin Solid ◽  
And Performance

AbstractThe application of light weight particleboard in furniture industry becomes more inevitable because of the requirement to facilitate transportation and assembly by the customer. Herein, a novel method for the fabrication of foaming particleboard was proposed, which is achieved by adding azodicarbonamide (AC) foaming agent into the formulation that consist of oven-dry poplar (Populus alba) particles (with the moisture content about 4%) and phenol formaldehyde resin (PF resin) (solid content of 48%). In this study, the effects of AC foaming agent and adhesive contents incorporation and its content on mechanical, physical and chemical properties of particleboards were investigated. The results showed that the addition of AC foaming agent played a critical role in properties of particleboard and the optimal particleboard performance was achieved at the particleboard density of 0.6 g/cm3, the PF resin amount of 12%, and the AC foaming agent amount of 1%. Furthermore, the pores appeared on the particle surface were the products of the radical pyrolysis of the foaming agent, which has been proved by the FTIR results and the pores also affect the properties of the particleboards.

scholarly journals Effect of Boron and Phosphorus Compounds on Fire and Technological Properties of Oriented Strandboard

2020 ◽  
Vol 2 (2) ◽  
pp. 117-122
Keyword(s):  
Mechanical Properties ◽  
Boric Acid ◽  
Phenol Formaldehyde ◽  
Fire Retardant ◽  
Phenol Formaldehyde Resin ◽  
Solid Content ◽  
Phosphorus Compounds ◽  
Formaldehyde Resin ◽  
Technological Properties ◽  
Thickness Swelling

Effects of various fire retardant chemicals on fire and technological properties of laboratory made oriented strandboards (OSBs) were investigated. Aspen chips were used in the production of OSB panels. An exterior liquid phenol formaldehyde resin with 47 percent solid content was used as adhesive. There was no addition of any hardener and filling materials into resin in the OSB manufacturing. Boron compounds such as borax and boric acid, and phospate compounds such as monoammonium phosphate and diammonium phospahate were used as fire retardant chemicals in the OSB panels. An exterior liquid phenol formaldehyde resin was used as adhesive. The chemicals in powder form were added into the resin blender at contents of 2%, 4%, and 6% based on oven-dry wood weight. The OSB panels containing borax had the highest thickness swelling, followed by the panels containing boric acid, monoammonium phospahate, and diammonium phosphate, respectively. Increasing the content of these chemicals in the OSB resulted in greater thickness swelling. For the mechanical properties, the chemicals can be used up to oven dry particle weight of 6% in the panels at humid and dry conditions because of the fact that they met the standard values of mechanical properties given in TS EN 300 for types of OSB/3 (exterior type. Fire resistance of the panels was improved with increased chemical content in the panels.

Purification of water contaminated with heavy metals by example of lead as promising material based on graphene nanostructures

2020 ◽  
pp. 34-43
Author(s):  
N. R. Memetov ◽  
◽  
A. V. Gerasimova ◽  
A. E. Kucherova ◽  
◽  
...  
Keyword(s):  
Adsorption Process ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Parameter Estimates ◽  
Maximum Adsorption Capacity ◽  
Ecological Situation ◽  
Characteristic Parameters ◽  
Purification Of Water ◽  
Graphene Nanostructures

The paper evaluates the effectiveness of the use of graphene nanostructures in the purification of lead (II) ions to improve the ecological situation of water bodies. The mechanisms and characteristic parameters of the adsorption process were analyzed using empirical models of isotherms at temperatures of 298, 303, 313 and 323 K, which correspond to the following order (based on the correlation coefficient): Langmuir (0.99) > Temkin (0.97) > Dubinin – Radushkevich (0.90). The maximum adsorption capacity of the material corresponds to the range from 230 to 260 mg/g. We research the equilibrium at the level of thermodynamic parameter estimates, which indicates the spontaneity of the process, the endothermic nature and structure change of graphene modified with phenol-formaldehyde resin during the adsorption of lead (II) ions, leading to an increase in the disorder of the system.

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