Potential of visible and near infrared spectroscopy to quantify phenol formaldehyde resin content in oriented strandboard

2008 ◽  
Vol 67 (1) ◽  
pp. 3-5 ◽  
Author(s):  
Adam Taylor ◽  
Brian K. Via
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Resin Content ◽  
Formaldehyde Resin ◽  
Oriented Strandboard

scholarly journals Production of Structural Particleboard of Mimosa Scabrella Benth With Lignin Phenol-formaldehyde Resin

2019 ◽  
Vol 26 (3) ◽  
Author(s):  
Viviane Teixeira Iwakiri ◽  
Rosilani Trianoski ◽  
Dalton Luiz Razera ◽  
Setsuo Iwakiri ◽  
Thiago Souza da Rosa
Keyword(s):  
Phenol Formaldehyde ◽  
Mechanical Tests ◽  
Phenol Formaldehyde Resin ◽  
Resin Content ◽  
Positive Interactions ◽  
Formaldehyde Resin ◽  
Thickness Swelling ◽  
Specific Mass ◽  
Pressing Time ◽  
Structural Applications

ABSTRACT The objective of this work was to evaluate the feasibility of using lignin-phenol-formaldehyde resin in the production of Mimosa scabrella Benth (bracatinga) structural particleboard. The boards were produced with nominal specific mass of 0.75 and 0.95 g/cm3, 10% and 12% of phenol-formaldehyde and lignin-phenol-formaldehyde resins, with 10 and 12 min of pressing time. The boards quality was evaluated by means of the following physical-mechanical tests: specific mass, compression ratio, water absorption and thickness swelling after 2 and 24 hours soaking, perpendicular traction, static bending and screw pulling. Positive interactions of specific mass, resin content and pressing time were observed in the properties of the boards produced. The evaluation of the properties results based on the requirements of EN 312 (type P5) standard indicated the feasibility of using lignin-phenol-formaldehyde resin in the production of particleboard of Mimosa scabrellla for structural applications.

scholarly journals Determination of natural rubber and resin content of guayule fresh biomass by near infrared spectroscopy

2019 ◽  
Vol 134 ◽  
pp. 177-184 ◽  
Author(s):  
Manon Taurines ◽  
Loic Brancheriau ◽  
Serge Palu ◽  
Daniel Pioch ◽  
Eric Tardan ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Natural Rubber ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Resin Content ◽  
Fresh Biomass

scholarly journals Use of Near-Infrared Spectroscopy for On-Line Monitoring the Quality of Prepreg Cloth

2008 ◽  
Vol 17 (2) ◽  
pp. 096369350801700 ◽  
Author(s):  
Wei Li ◽  
Yu Dong Huang ◽  
Ping Chen
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Resin Content ◽  
Quality Analysis ◽  
Volatile Content ◽  
On Line ◽  
Spectral Ranges ◽  
Major Emphasis

On-line monitoring the prepreg quality in the polymer composite industry continues to be a major emphasis, it will reduce the amount of prepreg manufactured under “outside specifications”. A near-infrared spectroscopy has been implemented for measurement of resin content, pre-curing degree of resin and volatile content during the manufacture of glass/phenolic resin prepreg cloth. The regression method employed was partial least squares (PLS). The optimum models were obtained by selecting different spectral pretreatments and spectral ranges. The determination coefficients (R2) for the resin content, pre-curing degree and volatile content were 98.36, 98.76 and 98.33, respectively. The root mean squares of cross-validation (RMSECV) were 0.364, 0.145 and 0.182 respectively for the resin content, pre-curing degree and volatile content, respectively. The NIR method was applied to monitor the quality of prepreg cloth on line. The results showed that the monitored values were closed to the actual values. The study indicates that the on-line quality analysis of prepreg cloth was realised by using NIR technique.

Determination of resin and moisture content in melamine-formaldehyde paper using near infrared spectroscopy

2017 ◽  
Vol 25 (5) ◽  
pp. 311-323 ◽  
Author(s):  
Ana Henriques ◽  
Miguel Gonçalves ◽  
Nádia Paiva ◽  
João Ferra ◽  
Jorge Martins ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Resin Content ◽  
Partial Least Square ◽  
Least Square ◽  
Statistical Criterion ◽  
Calibration Model ◽  
Melamine Formaldehyde

This paper describes the use of near infrared spectroscopy as a tool for the determination of moisture and resin content on papers impregnated with melamine-formaldehyde resins for high-pressure laminate production. The papers had different colours and grammages. The near infrared analysis range comprised wavelengths between 12,000 cm−1 and 4000 cm−1. Several multivariate calibration procedures and pre-processing techniques were tested for selection of the best spectral interval, including interval partial least-square, forward interval partial least-square and synergy interval partial least-square. The performance of calibration models was evaluated computing the root mean-squared error of cross-validations and the coefficient of determination (R2). An external validation procedure was done using different decorative papers (red, pearl, yellow, violet and pale green). The performances of the best models were compared using the statistical criterion root mean square error of prediction. It was shown that the developed models can be applied in the determination of resin content independently of the grammage and colour of the papers. However, regarding the volatile content, the models seemed to be affected by external factors, such as the presence of dyes and pigments, and were only applicable to papers having spectra similar to those used in the calibration model.

In situ identification of the molecular-scale interactions of phenol-formaldehyde resin and wood cell walls using infrared nanospectroscopy

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76318-76324 ◽  
Author(s):  
Xinzhou Wang ◽  
Yuhe Deng ◽  
Yanjun Li ◽  
Kevin Kjoller ◽  
Anirban Roy ◽  
...  
Keyword(s):  
Cell Wall ◽  
Infrared Spectroscopy ◽  
Cell Walls ◽  
Wood Cell Wall ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Atomic Force ◽  
Molecular Scale

Atomic force microscope infrared spectroscopy (AFM-IR), contact resonance AFM (CR-AFM) measurement, and nanoindentation were combined to identify the interactions between wood cell wall and phenol-formaldehyde resin (PF) on the nanoscale.

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