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Fig. 8. Analysis of variance – dependence of internal bonding on modification of particles Figure 9 shows a SEM microscopic image of the damaged joint from the tensile test perpendicular to the plane of the boards. The image shows the noticeable impact of the modification on the nature of the damage. In terms of boards manufactured fromthe reference unmodified particles (Fig. 9a), there was only adhesion damage between the adhesive and the particle surface. In terms of boards made from plasma-modified particles (Figs. 9b, 9c), cohesive breakage in the particle material was also observed, which indicated a better joint of the modified particle-adhesive.
Fig. 9. SEM analysis of particle of boards after strength testing: (a) reference, (b) modification A, and (c) modification B
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Hýsek et al . (2018). “Cold plasma & straw board,” B io R esources 13(3), 5065-5079.
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