Chemical force microscopy of cellulosic fibers

Bastidas, Juan C.; Venditti, Richard A.; Pawlak, Joel J.; Gilbert, R. D.; Zauscher, Stefan; Kadla, John F.

doi:10.1016/j.carbpol.2005.08.058

Cited by 56 publications

(47 citation statements)

References 26 publications

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“…For RTF these bands were broader than the ones observed for PCF and RH fibers. This could be explained since RTF fibers contain cellulose II and its structure is able to form more hydrogen bonds than cellulose I, resulting in a major broadening of these bands 25 .…”

Section: Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Characterization of Fibers from Pineapple's Crown, Rice Husks and Cotton Textile Residues

Prado

Spinace

2015

Mat. Res.

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Fibers from pineapple's crown (PCF), rice husks (RH) and cotton textile residues (RTF) were characterized by SEM, X-ray diffraction, FTIR and thermogravimetric analysis. Moisture content, water absorption, density and the distribution of the diameter of the fibers were also evaluated. RTF showed cylindrical microstructure with smooth surface, PCF showed cellular structure and the microstructure of RH is globular, showing cell pattern of the outer surface epidermis which is well organized and has a corrugate structure. PCF and RH showed crystallographic planes of cellulose I and RTF showed a mixture of cellulose I and cellulose II. RTF showed the highest degree of crystallinity and the lower moisture content and water absorption. These results occur because the RTF has no hemicellulose, as verified by FTIR. Comparing the three fibers, the RTF presented the lowest density and diameter. Furthermore, the onset degradation temperature of RTF was 40 °C higher than the PCF and the RH.

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Section: Fourier-transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Characterization of Fibers from Pineapple's Crown, Rice Husks and Cotton Textile Residues

Prado

Spinace

2015

Mat. Res.

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“…Tip modification for CFM Silicon force modulation cantilevers from nanosensors were modified according to Bastidas et al (2005). Tips with the following functional groups were prepared:…”

Section: Sample Preparationmentioning

confidence: 99%

“…They found that the adhesive force was larger if the tip and substrate had the same functionality. Chemical force microscopy has also been used to study cellulose fibres in aqueous media by Bastidas et al (2005), who determined the effect of the pH value on the adhesive force determined with -CH 3 ,--COOH-and -OH-coated tips.…”

Section: Introductionmentioning

confidence: 99%

Determination of the cellulose and lignin content on wood fibre surfaces of eucalypts as a function of genotype and site

et al. 2010

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We compared the chemical composition of wood fibres and fibre surfaces of several eucalypt species and hybrids originating from various growth sites in South Africa. The objective was to test for differences in chemical surface composition due to genetics or site with the ultimate aim to facilitate a tailor-made supply of wood for pulping that results in an optimal blend of fibres that can be pulped together with similar yields. This, however, requires a sound knowledge of the fibre properties. The surface functionality on the single fibre level is a key property, because it determines how good inter-fibre bonding will be when paper is formed, which depends amongst other fibre properties on the amount of free hydroxyl groups that are available and therefore on the cellulose content on the fibre surface. The cellulose and lignin content on the fibre surface were determined with chemical force microscopy, a variation of atomic force microscopy. Since the general bulk composition of the fibre and the surface composition might differ, both parameters were determined. We found significant differences in the cellulose and lignin content on fibre surfaces, with regard to genotype and site, respectively. In some, but not all, cases, the surface composition of wood fibres followed the bulk composition, and differences were generally more pronounced. Differences due to genotype were significant, especially with regard to the surface lignin content-but variation due to site was also distinctly recognisable. This variation in surface functionality could be the reason why some pulpwood blends result in a lower pulp yield and different quality.

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“…The nonvertical component of stylus motion is often attributed to friction or viscosity, but as Carpick points out, 'If the sample surface is not flat, the surface normal force will have a component directed laterally and will result in contrast in the lateral force image.' Despite these problems, valuable information on friction at cellulose surfaces has been obtained with AFM (105,110,111).…”

Section: Force Spectroscopymentioning

confidence: 99%

“…Once demonstrated (101), CFM has been applied to characterize cell surfaces (102)(103)(104) and intermolecular interactions of cellulose surfaces (96,105). A thorough and readable introduction to CFM, along with many applications, is suggested (106).…”

Section: Force Spectroscopymentioning

confidence: 99%