Volatile organic compounds (VOCs) from lauan (Shorea ssp.) plyboard prepared with kraft lignin, soy flour, gluten meal and tannin: emissions during hot pressing and from panels as a function of time
-
Warren Grigsby
,
Shin-ichiro Tohmura
Abstract
Soy and corn gluten proteins are common ingredients in adhesives and resins together with kraft lignin and condensed tannin. The relative contribution of these additives to volatile organic compound (VOC) emissions in the course of processing hardwood veneer products was evaluated. Press emissions were captured and separated into condensate and gaseous fractions. High-performance liquid chromatography (HPLC) was employed to characterize aldehydes in condensate and gaseous fractions, while GCMS served for identification and quantitative determination of the compounds in the gas phase. Aldehydes dominate the press emissions with both proteinaceous binders producing significantly higher formaldehyde (FA), acetaldehyde (AcA) and hexaldehyde (hexA) emissions compared to pressed veneer without additives. Other aldehydes, including valeraldehyde and propionaldehyde were also captured, but in relatively lower amounts. In contrast, lignin as a binder led to lower FA content in press emissions, whereas tannin significantly reduced contributions of FA, AcA and other aldehydes. VOC emissions from plywood panels during chamber testing were similar to compounds evolved on hot-pressing.
Acknowledgments
The authors are grateful to their respective institutions, Scion and FFPRI, for time and resourcing of this work and also to the Japan Society for the Promotion of Science for the provision of an International Invitational Fellowship Award (WG).
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported by Ministry of Education, Culture, Sports, Science and Technology – Japan Society for the Promotion of Science, Funder Id: 10.13039/501100001691 (S14740).
Employment or leadership: None declared.
Honorarium: None declared.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Editorials
- Editorial changes at Holzforschung
- Goodbye to Holzforschung
- Thanks to Oskar Faix
- Original Articles
- Orthotropic mechano-sorptive creep behavior of Chinese fir during the moisture adsorption process determined in tensile mode via dynamic mechanical analysis (DMA)
- Differences in the viscoelastic properties between earlywood and latewood in the growth rings of Chinese fir as analyzed by dynamic mechanical analysis (DMA) in the temperature range between −120°C and 120°C
- Failure conditions of solid wood on off-axis compression testing
- Effect of knots and holes on the modulus of elasticity prediction and mapping of sugi (Cryptomeria japonica) veneer using near-infrared hyperspectral imaging (NIR-HSI)
- Quantification of slip planes in the stem wood of Eucalyptus grandis
- DNA barcoding authentication for the wood of eight endangered Dalbergia timber species using machine learning approaches
- Chemical analysis and antioxidant activities of bark extracts from four endemic species of Hyrcanian forests in Iran
- Isolation of natural flavoring compounds from cooperage woods by pressurized hot water extraction (PHWE)
- Volatile organic compounds (VOCs) from lauan (Shorea ssp.) plyboard prepared with kraft lignin, soy flour, gluten meal and tannin: emissions during hot pressing and from panels as a function of time
- Plasma treatment of plastic film or decorative veneer and its effects on the peel strength and curling deformation of plastic film-reinforced pliable decorative sliced veneer (PR-RP-DSV)
Articles in the same Issue
- Frontmatter
- Editorials
- Editorial changes at Holzforschung
- Goodbye to Holzforschung
- Thanks to Oskar Faix
- Original Articles
- Orthotropic mechano-sorptive creep behavior of Chinese fir during the moisture adsorption process determined in tensile mode via dynamic mechanical analysis (DMA)
- Differences in the viscoelastic properties between earlywood and latewood in the growth rings of Chinese fir as analyzed by dynamic mechanical analysis (DMA) in the temperature range between −120°C and 120°C
- Failure conditions of solid wood on off-axis compression testing
- Effect of knots and holes on the modulus of elasticity prediction and mapping of sugi (Cryptomeria japonica) veneer using near-infrared hyperspectral imaging (NIR-HSI)
- Quantification of slip planes in the stem wood of Eucalyptus grandis
- DNA barcoding authentication for the wood of eight endangered Dalbergia timber species using machine learning approaches
- Chemical analysis and antioxidant activities of bark extracts from four endemic species of Hyrcanian forests in Iran
- Isolation of natural flavoring compounds from cooperage woods by pressurized hot water extraction (PHWE)
- Volatile organic compounds (VOCs) from lauan (Shorea ssp.) plyboard prepared with kraft lignin, soy flour, gluten meal and tannin: emissions during hot pressing and from panels as a function of time
- Plasma treatment of plastic film or decorative veneer and its effects on the peel strength and curling deformation of plastic film-reinforced pliable decorative sliced veneer (PR-RP-DSV)
