Modified Fibers with Medical and Specialty Applications
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Although it has a protein structure, the casein fibre had a low breaking force when compared to wool fibre. It could mainly because of the lower linear density compared to the wool fibre. The casein fibre also had a lower breaking force than cellulosic fibres. Table 1.
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Polymer stability is a key property for regenerated fibres. The DSC analysis was applied to the fibres and the thermal degradation values are depicted in Figure 2. For any given sample, only two DSC peaks exothermic and endothermic were observed. Bamboo fibre thermal behaviour Fig 2- a was observed at The thermal behaviour of the cotton fibres showed at Organic cotton fibre had The DSC result of the wool fibres were Casein fibre thermal behaviour was The highest exothermic peak was observed from the casein fibre It has been observed that the results also confirm that cellulosic fibres have a similar pattern dehydration and decomposition temperatures.
Modified Fibers with Medical and Specialty Applications
The thermal degradation of the casein is mainly affected by its protein composition. Figure 2. DSC thermograms of the fibres: a-bamboo, b-cotton, c-organic cotton, d-wool, e-casein. Absorbency; the fibres were immersed in two fluids which are solution A solution and distilled water.
The mean values of the fluid uptake values of fibres are given in Table 3. There is a significant difference in the absorption properties of the fibres. The cellulosic fibres absorbed more solution A and distilled water than the protein fibres.
It was expected due to fibre main characteristics. The absorbency of bamboo fibres for both fluids is more than cotton and organic cotton fibres. This difference has been found significant. Organic cotton had slightly higher absorbency properties than cotton; however, this difference is not noteworthy.
The casein fibre demonstrated poor absorbency and moisture content characteristics. It is clear from these findings that the casein fibre is not appropriate high absorbency required applications such as wound dressing and other absorbent products. The moisture content of cellulosics also is significantly higher than protein fibre both for distilled water and solution A solution.
Table 3. Distilled water and solution A solution absorption of the fibres. Swelling; the swelling characteristics of the fibres were determined by using a microscope. The diameters of the dry and wet fibres, both with distilled water and solution A solution, were determined, see Table 4. Swelling properties of bamboo fibre treated with water showed a higher swelling ratio than those in solution A solution.
The bamboo fibre wet diameter was 0. The higher swelling ratio could be related with higher absorbency of the bamboo fibres.
The swelling of bamboo fibres after solution A treatment was lower than when treated with distilled water. The wool and casein fibres did not swell because of their hydrophobic nature. Table 4.
Review of diverse optical fibers used in biomedical research and clinical practice
Water and solution A swelling of fibres diameters changes in micron. A comparative study on the absorbency, swelling and tensile properties of selected fibres has been performed in accordance with standard test methods. This investigation has revealed that bamboo fibres have higher absorbency and swelling properties than cotton, wool and casein fibres.
Bamboo fibre also shows the highest breaking tenacity compared to other tested fibres. Bamboo fibres demonstrate a better breaking extension; however its breaking forces were similar to cotton and organic cotton. The cellulosics were shown to have a similar thermal pattern dehydration and decomposition temperatures.
It has comparable absorbency and swelling values that alginate and chitosan fibres have.
In addition to bamboo fibre could be a cost-effective alternative for silver treated dressings. The casein was also investigated for probable application as absorbent wound dressing applications; however, it has been found that the casein fibre does not have any appropriate properties for absorbent applications. Accept Read More. September 23, Advances and new developments in specialty fibres:. Multi-core fibres Photonic crystal fibres, Microstructured fibres fibre lasers Non-silica fibres Nonlinear optics Special fibre components and applications fibres sensors Industrial applications.
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