Microrobotic platform for manipulation and flexibility measurement of individual paper fibers

Saketi, Pooya; Treimanis, A.; Fardim, Pedro; Ronkanen, P.; Kallio, Pasi

doi:10.1109/iros.2010.5649723

Cited by 25 publications

(16 citation statements)

References 27 publications

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“…The main limiting factor for single fibre tests is currently that a certain fibre length is required, which excludes short fibres (mainly hardwood and juvenile) to be tested and the fact that isolated cell walls cannot yet be tested in their transverse directions. Sample preparation with the aid of a microlaser dissecting tool combined with new gripping systems, recently developed in the robotics field (Saketi et al 2010;Saketi and Kallio 2011), might allow tensile tests on isolated wood cell walls in ''any'' direction and by controlled humidity.…”

Section: Discussionmentioning

confidence: 99%

Experimental micromechanical characterisation of wood cell walls

et al. 2012

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The properties of wood and wood-based materials are strongly dependent on the properties of the fibres, that is, the cell wall properties. It is thus highly important to be able to mechanically characterise cell walls in order to understand structure-property relationships. This article gives a brief overview of the state of the art in experimental techniques to characterise the mechanical properties of wood at both the level of the single cell and that of the cell wall. Challenges, opportunities, drawbacks and limitations of single fibre tensile tests and nanoindentation are discussed with respect to the wood material properties. Introduction and background

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Section: Discussionmentioning

confidence: 99%

Experimental micromechanical characterisation of wood cell walls

et al. 2012

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“…Ten fibers from each batch were forced to flex five times in our experiments, and the averaged compliances were calculated from the force sensor data. The platform and its application for pulp fiber characterization is explained by Saketi et al [30]. In the method, a pulp fiber is gripped from both of its ends by two microgrippers (Figure 1).…”

Section: Microrobotic Platformmentioning

confidence: 99%

In Situ Hybridization of Pulp Fibers Using Mg-Al Layered Double Hydroxides

Lange

Lastusaari

Reza

et al. 2015

Fibers

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Inorganic Mg2+ and Al 3+ containing layered double hydroxide (LDH) particles were synthesised in situ from aqueous solution onto chemical pulp fibers of pine (Pinus sylvestris). High super saturated (hss) solution with sodium carbonate produced LDH particles with an average diameter of 100-200 nm. Nano-size (70 nm) LDH particles were found from fibers external surface and, to a lesser degree, from the S2 cell wall after synthesis via low super saturated (lss) route. The synthesis via slow urea hydrolysis (Uhyd) yielded micron and clay sized LDH (2-5 µm) and enabled efficient fiber densification via mineralization of S2 fiber wall layer as indicated by TEM and compliance analysis. The Uhyd method decreased fiber compliance up to 50%. Reduction in the polymerisation degree of cellulose was observed with capillary viscometry. Thermogravimetric analysis showed that the hybridization with LDH reduced the exothermic heat, indicating, that this material can be incorporated in flame retardant applications. Fiber charge was assessed by

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“…These values are slightly lower than the values reported by Tam Doo and Kerekes (1982), in spite of using a dry fibres and a completely different method. Saketi et al (2010) measured the flexibility of individual fibres in a microrobotic platform by holding them with two microgrippers while applying a force in the centre of the fibre and calculating the flexibility from the force over deflection data. The fibres were Cellulose (2017) 24:4139-4149 4141 initially wet but after being picked up by the microgrippers they were held at a temperature of 25°C and a relative humidity of 27%.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the flexibility of wet cellulose fibres using atomic force microscopy

Pettersson

Hellwig

Gustafsson³

et al. 2017

Cellulose

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Flexibility and modulus of elasticity data for two types of wet cellulose fibres using a direct force-displacement method by means of AFM are reported for never dried wet fibres immersed in water. The flexibilities for the bleached softwood kraft pulp (BSW) fibres are in the range of 4-38 9 10 12 N -1 m -2 while the flexibilities for the thermomechanical pulp (TMP) fibres are about one order of magnitude lower. For BSW the modulus of elasticity ranges from 1 to 12 MPa and for TMP between 15-190 MPa. These data are lower than most other available pulp fibre data and comparable to a soft rubber band. Reasons for the difference can be that our measurements with a direct method were performed using never dried fibres immersed in water while other groups have employed indirect methods using pulp with different treatments.

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Microrobotic platform for manipulation and flexibility measurement of individual paper fibers

Cited by 25 publications

References 27 publications

Experimental micromechanical characterisation of wood cell walls

Experimental micromechanical characterisation of wood cell walls

In Situ Hybridization of Pulp Fibers Using Mg-Al Layered Double Hydroxides

Measurement of the flexibility of wet cellulose fibres using atomic force microscopy

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