Formaldehyde and VOC emissions from plywood panels bonded with bio-oil phenolic resins

Jia, Liangliang; Chu, Jianzhou; Li, Jing; Ren, Jiawei; Huang, Ping; Li, Dongbing

doi:10.1016/j.envpol.2020.114819

Cited by 31 publications

(16 citation statements)

References 38 publications

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“…However, according to some researchers, the suggested solution could reduce the emission rate of one chemical, while increasing the emission rate of other chemicals [73,74]. VOC emission reductions from birch plywood glued with phenol formaldehyde resins were shown in a study that substituted phenol with bio-oil; however, in this study, increased formaldehyde emissions were recorded, despite a significant decrease of the total emission of VOCs being detected [75]. VOC emission rates can be decreased by applying the appropriate resins and pressing parameters in MDF [76].…”

Section: Voc Emission Reduction and Suggestionsmentioning

confidence: 59%

Volatile Organic Compounds (VOCs) Emitted from Coated Furniture Units

Ülker

Hızıroǧlu

2021

Coatings

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Volatile organic compounds (VOCs) are the main source influencing the overall air quality of an environment. It is a well-known fact that coated furniture units, in the form of paints and varnishes, emit VOCs, reducing the air quality and resulting in significant health problems. Exposure time to such compounds is also an important parameter regarding their possible health effects. Such issues also have a greater influence when the exposure period is extended. The main objective of this study was to review some of the important factors for the emission of VOCs from coated furniture, from the perspective of material characteristics, as well as health concerns. Some methods for controlling VOC emissions to improve indoor air quality, from the point of view recent regulations and suggestions, are also presented in this work.

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Section: Voc Emission Reduction and Suggestionsmentioning

confidence: 59%

Volatile Organic Compounds (VOCs) Emitted from Coated Furniture Units

Ülker

Hızıroǧlu

2021

Coatings

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“…However, very few studies have investigated the VOC profiles of binder-less and bio-adhesive-bonded particleboards. It has been reported that pyrolysis bio-oil used to substitute phenol in phenol-formaldehyde resins for producing plywood partially presents greatly increased carcinogenic and noncarcinogenic risks because of the detected significantly higher emissions of formaldehyde, N,N-dimethylformamide, benzofuran, and furfural [ 16 ]. Chemical modification of raw hemp shives with tartaric acid, citric acid, and sodium bicarbonate resulted in an adverse effect, leading to increased total VOC emissions [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Qualitative Differences and Emission Persistence of Volatile Organic Compounds from Bio-Based Particleboards

et al. 2022

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An attempt to reduce, replace, or even eliminate the synthetic resins from wood-based panels alongside broadening the array of raw lignocellulosics is still essential and attractive. Many pretreatments of lignocellulosics have been studied, among which steam explosion (SE) resulted in superior physical-mechanical properties of the obtained binder-less boards. However, the SE pretreatment leads to a relatively strong odor, which is even emitted from the obtained binder-less boards independent of the raw lignocellulosic, raising concern about the use of the boards. Emissions of volatile organic compounds (VOCs) were investigated in the framework of the study from binder-less boards obtained from different SE raw lignocellulosics and SE-untreated suberinic acids-bonded particleboard. VOCs were collected by headspace solid-phase microextraction (HS-SPME) and analyzed by gas chromatography–mass spectrometry (GC–MS) for 28 days with an interval of 2 weeks. The results showed that the number of detected VOCs and their chromatographic peak area varied significantly depending on the raw lignocellulosic, board density, and post-treatment (overlayering), decreasing over time. The lowest area of detected VOCs was demonstrated by the suberinic acids-bonded particleboard, while the highest area was detected from the high-density binder-less board obtained from SE hemp shives with the main compound of furfural (up to 70%) in all board types.

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“…Constant inhalation of formaldehyde can cause damage to the respiratory and nervous system, eyes, and even lead to cancer and leukemia (Tang et al, 2011). These issues have encouraged the use of alternative chemicals to replace all or part of the petrochemical components of synthetic resins (Jia et al, 2020), especially if the change promotes reduced formaldehyde emissions and improves the adhesive's performance in this regard (Zhao et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Application of Myrcia splendens tannins in the composition of urea-formaldehyde adhesive for sustainable wood bonding

Danielli

Pires

Araújo

et al. 2021

RSD

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Tannins from Myrcia splendens from the Amazon rainforest were used for the first time in the formulation of a urea-tannin-formaldehyde (UTF) resin. The objective was to evaluate the effect of different tannin proportions on the glue line performance in Pinus sp. woods, glued with UTF adhesive. The tannins were extracted in a water bath, using 1500 mL of water and 100g of dry bark (liquor/bark 15:1), with addition of 3% Na2SO3, at a temperature of 70 °C for three hours. The adhesives formulations were based on the gradual replacement of mass of the urea-formaldehyde (UF) adhesive by tannin powder, totalizing four compositions and one control treatment. UTF adhesives were evaluated for their physicochemical properties, shear bond strength (wet and dry) and wood failure. The addition of M. splendens tannins to the urea formaldehyde adhesive promoted an increase in glue line strength. The proportion of 5.0% of tannins proved to be ideal in the formulation of the UTF adhesive, considering all the parameters evaluated. Thus, this study proves the potential use of Amazonian tannins from Myrcia splendens in the partial composition of more sustainable UTF adhesives.

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Formaldehyde and VOC emissions from plywood panels bonded with bio-oil phenolic resins

Cited by 31 publications

References 38 publications

Volatile Organic Compounds (VOCs) Emitted from Coated Furniture Units

Volatile Organic Compounds (VOCs) Emitted from Coated Furniture Units

Qualitative Differences and Emission Persistence of Volatile Organic Compounds from Bio-Based Particleboards

Application of Myrcia splendens tannins in the composition of urea-formaldehyde adhesive for sustainable wood bonding

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