Protein-based glyoxal–polyethyleneimine-crosslinked adhesives for wood bonding

Averina, Elena; Konnerth, Johannes; Herwijnen, Hendrikus W. G. van

doi:10.1080/00218464.2021.2020111

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…It can be assumed to be a degradation product of hydrocarbons or a combustion product of biomass. It also might be released by textiles where it is used to tear the strength of fibrous materials due to its ability to react with hydroxy and amino groups of proteins and cellulose [ 36 ]. Glyoxal was not detected in the other body bags of stage 3.…”

Section: Resultsmentioning

confidence: 99%

Catch me if you can—emission patterns of human bodies in relation to postmortem changes

Schieweck,

Schulz,

Amendt

et al. 2024

Int J Legal Med

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The present study examines for the first time the emission patterns and olfactory signatures of 9 complete human corpses of different stages of decomposition. Air sampling was performed inside the body bags with solid sorbents and analysed by coupled gas chromatography-mass spectrometry after thermal desorption (TD-GC-MS). Furthermore, odour-related substances were detected by gas chromatography-olfactometry (GC-O). Sulfurous compounds (mainly dimethyl di- and trisulfide) were identified as most important to the odour perception. Around 350 individual organic substances were detected by TD-GC-MS, notably sulfurous and nitrogenous substances as well as branched alkanes, aldehydes, ketones, alcohols, carboxylic acids, carboxylic acid esters and ethers. A range of terpenes was detected for the first time in a characteristic emission pattern over all decomposition stages. Concentrations of the substances varied greatly, and no correlation between the emission patterns, the stage of decomposition and the cause of death could be found. While previous studies often analysed pig cadavers or only parts of human tissue, the present study shows the importance of analysing complete human corpses over a range of decomposition stages. Moreover, it is shown that using body bags as a kind of “emission test chamber” is a very promising approach, also because it is a realistic application considering the usual transport and store of a body before autopsy. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Catch me if you can—emission patterns of human bodies in relation to postmortem changes

Schieweck,

Schulz,

Amendt

et al. 2024

Int J Legal Med

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show abstract

“…Wood composites, including plywood, make use of synthetic formaldehyde-based adhesives, such as UF, melamine-formaldehyde (MF), melamine-urea-formaldehyde (MUF), and phenol-formaldehyde (PF), as frequently used resins [129,130]. Environmental and health issues have also prompted efforts to use more friendly adhesives, such as latex [131], soy protein [132], lignin [133,134], and tannin [135,136]. Several studies have also modified conventional adhesives using starch to reduce formaldehyde emissions in plywood products or using starch as a base.…”

Section: Plywoodmentioning

confidence: 99%

Advanced Eco-Friendly Wood-Based Composites II

2023

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“…For instance, soy protein adhesives have been proposed for joining wood panels with good results [ 37 , 38 ], even though this would be impossible without extensive modifications. The modification processes of soy protein often focus on improving the mechanical behaviour of the adhesive, which can be achieved via thermal treatments [ 39 ], microwave treatments [ 40 ], modifications in the cross-linking [ 41 , 42 , 53 ], or biomimetic modification [ 43 ], among other aspects. Nevertheless, there are other concerns that need to be tackled, such as the ability of proteins to penetrate wood voids since they are usually significantly large molecules with high molecular weights.…”

Section: Bio-adhesivesmentioning

confidence: 99%

Sustainable Development Approaches through Wooden Adhesive Joints Design

et al. 2022

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Over recent decades, the need to comply with environmental standards has become a concern in many industrial sectors. As a result, manufacturers have increased their use of eco-friendly, recycled, recyclable, and, overall, more sustainable materials and industrial techniques. One technique highly dependent on petroleum-based products, and at the edge of a paradigm change, is adhesive bonding. Adhesive bonding is often used to join composite materials and depends upon an adhesive to achieve the connection. However, the matrices of the composite materials and the adhesives used, as well as, in some cases, the composite fibres, are manufactured from petrochemical products. Efforts to use natural composites and adhesives are therefore ongoing. One composite that has proven to be promising is wood due to its high strength and stiffness (particularly when it is densified), formability, and durability. However, wood must be very carefully characterised since its properties can be variable, depending on the slope of the grains, irregularities (such as knots, shakes, or splits), and on the location and climate of each individual tree. Therefore, in addition to neat wood, wood composites may also be a promising option to increase sustainability, with more predictable properties. To bond wood or wooden composite substrates, bio-adhesives can be considered. These adhesives are now formulated with increasingly enhanced mechanical properties and are becoming promising alternatives at the structural application level. In this paper, wooden adhesive joints are surveyed considering bio-adhesives and wood-based substrates, taking into consideration the recent approaches to improve these base materials, accurately characterise them, and implement them in adhesive joints.

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Protein-based glyoxal–polyethyleneimine-crosslinked adhesives for wood bonding

Cited by 9 publications

References 31 publications

Catch me if you can—emission patterns of human bodies in relation to postmortem changes

Catch me if you can—emission patterns of human bodies in relation to postmortem changes

Advanced Eco-Friendly Wood-Based Composites II

Sustainable Development Approaches through Wooden Adhesive Joints Design

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