Influence of Pressure on the Radial and Tangential Penetration of Adhesive Resin into Poplar Wood and on the Shear Strength of Adhesive Joints

Gavrilović-Grmuša, Ivana; Dunky, Manfred; Djiporovic-Momcilovic, Milanka; Popović, M.; Popović, Jasmina

doi:10.15376/biores.11.1.2238-2255

Cited by 26 publications

(13 citation statements)

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“…Another promising approach that we want to test is the infiltration of the microborings with fluorescently stained epoxy resin, a method that was used before to investigate the penetration depth of wood adhesives into poplar wood. 39 As model for our experiment, we use shells of the bivalve species Delectopecten vitreus 40 and its microbioeroding community sampled from Norwegian cold-water coral reefs. Thriving at aphotic depths (180-300 m in the studied sites), these microendoliths are organotrophs and in particular marine fungi, an important group of bioeroders that often lack pigments and are thus only little accessible to conventional microscopy.…”

Section: 3mentioning

confidence: 99%

Exploring confocal laser scanning microscopy (CLSM) and fluorescence staining as a tool for imaging and quantifying traces of marine microbioerosion and their trace‐making microendoliths

Schätzle

Wisshak

Bick

et al. 2021

Journal of Microscopy

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Microscopic organisms that penetrate calcareous structures by actively dissolving the carbonate matrix, namely microendoliths, have an important influence on the breakdown of marine carbonates. The study of these microorganisms and the bioerosion traces they produce is crucial for understanding the impact of their bioeroding activity on the carbonate recycling in environments under global climate change. Traditionally, either the extracted microendoliths were studied by conventional microscopy or their traces were investigated using scanning electron microscopy (SEM) of epoxy resin casts. A visualisation of the microendoliths in situ, that is within their complex microbioerosion structures, was previously limited to the laborious and time-consuming double-inclusion cast-embedding technique. Here, we assess the applicability of various fluorescence staining methods in combination with confocal laser scanning microscopy (CLSM) for the study of fungal microendoliths in situ in partly translucent mollusc shells. Among the tested methods, specific staining with dyes against the DNA (nuclei) of the trace making organisms turned out to be a useful and reproducible approach. Bright and clearly delineated fluorescence signals of microendolithic nuclei allow, for instance, a differentiation between abandoned and still populated microborings. Furthermore, infiltrating the microborings with fluorescently stained resin seems to be of great capability for the visualisation and quantification of microbioerosion structures in their original spatial orientation. Potential fields of application are rapid assessments of endolithic bio-and ichnodiversity and the quantification of the impact of microendoliths on the overall calcium carbonate turnover. The method can be applied after CLSM of the stained microendoliths and retains the opportunity for a subsequentThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Section: 3mentioning

confidence: 99%

Exploring confocal laser scanning microscopy (CLSM) and fluorescence staining as a tool for imaging and quantifying traces of marine microbioerosion and their trace‐making microendoliths

Schätzle

Wisshak

Bick

et al. 2021

Journal of Microscopy

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“…The microscopy images were processed with graphics processing software (ImageJ, National Institutes of Health, v1.8.0, Bethesda, America) to calculate the average penetration depth (AP), effective penetration depth (EP), and permeation area (A) of the adhesive layer. The AP was obtained by taking the average of the five maximum penetration depth values of the adhesive layer, A is the area of the adhesive on the entire fluorescent image, and A divided by the length of the adhesive line is the EP (Gavrilovic-Grmusa et al 2016;Qin et al 2016).…”

Section: Morphology Of the Bonding Interfacementioning

confidence: 99%

Bonding performance of plywood with pig blood adhesives prepared by a novel method

Yong

Guan

et al. 2020

BioRes

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Renewable and eco-friendly pig blood adhesives (PBAs) were obtained by modifying PBAs with a mild alkaline solution and glutaraldehyde and exposing them to an ultrasound treatment. The PBAs were subjected to thermogravimetric (TG) analysis and Fourier transform infrared (FTIR) spectroscopy, and the bonding strength and bonding interface of plywood were analyzed to evaluate bonding performance. The results showed that the alkaline solution unfolded the structure of blood proteins, and the glutaraldehyde crosslinked the blood protein. In addition, the ultrasound greatly increased protein expansion under weak alkaline conditions. The thermal stability of the PBAs exposed to ultrasound treatment under weak alkaline conditions was improved, but the crosslinking agent was not used, and the permeability, which was analyzed by a fluorescence microscope, improved. Further, the average and effective penetration depths on the bonding interface increased 53% and 55%, respectively. The bonding strength of plywood prepared with modified PBAs was greatly improved and compliant with relevant requirements.

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“…The penetration of adhesives into wood fibers likely causes changes in the wood properties such as the morphology of interlayer, elastic modulus difference, composition changes, polymerization etc. [ 145 , 149 , 150 , 153 , 160 , 163 , 168 , 169 , 170 ]. Both quantitative and qualitative techniques have been developed to observe adhesive penetration at the micro- and nanoscales.…”

Section: Evaluation Of Wood Adhesivesmentioning

confidence: 99%

Bio-Based Adhesives and Evaluation for Wood Composites Application

et al. 2017

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There has been a rapid growth in research and innovation of bio-based adhesives in the engineered wood product industry. This article reviews the recent research published over the last few decades on the synthesis of bio-adhesives derived from such renewable resources as lignin, starch, and plant proteins. The chemical structure of these biopolymers is described and discussed to highlight the active functional groups that are used in the synthesis of bio-adhesives. The potentials and drawbacks of each biomass are then discussed in detail; some methods have been suggested to modify their chemical structures and to improve their properties including water resistance and bonding strength for their ultimate application as wood adhesives. Moreover, this article includes discussion of techniques commonly used for evaluating the petroleum-based wood adhesives in terms of mechanical properties and penetration behavior, which are expected to be more widely applied to bio-based wood adhesives to better evaluate their prospect for wood composites application.

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Influence of Pressure on the Radial and Tangential Penetration of Adhesive Resin into Poplar Wood and on the Shear Strength of Adhesive Joints

Cited by 26 publications

References 0 publications

Exploring confocal laser scanning microscopy (CLSM) and fluorescence staining as a tool for imaging and quantifying traces of marine microbioerosion and their trace‐making microendoliths

Exploring confocal laser scanning microscopy (CLSM) and fluorescence staining as a tool for imaging and quantifying traces of marine microbioerosion and their trace‐making microendoliths

Bonding performance of plywood with pig blood adhesives prepared by a novel method

Bio-Based Adhesives and Evaluation for Wood Composites Application

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