Fibrous Materials as Soft Matter

Pan, Ning; He, Ji‐Huan; Yu, Jianyung

doi:10.1177/0040517507076748

Cited by 42 publications

(29 citation statements)

References 48 publications

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“…The mean porosity of scaffolds are significantly different from each other and by increasing the mean fiber diameter, the porosity is also increased. This could be due to the fact that fiber diameter have a major contribution to form the pore structure of the fibrous materials . A good agreement can observe by comparing the results obtained from capillary flow porometry and CLSM with significant level 0.05 (Table ).…”

Section: Resultssupporting

confidence: 57%

Three‐dimensional pore structure analysis of polycaprolactone nano‐microfibrous scaffolds using theoretical and experimental approaches

Bagherzadeh

Latifi

Kong

2013

J Biomedical Materials Res

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In this article the pore structure and porosity parameters of polycaprolactone (PCL) nano-microfibrous scaffolds are investigated using a predicting theoretical model and a nondestructive evaluation approach based on confocal laser scanning microscopy (CLSM) and three-dimensional image analysis. Different fibrous scaffolds with different fiber diameters produced by electrospinning process and their 3D-pore structure were evaluated theoretically and also compared to results of CLSM and capillary flow porometery methods. The effect of polymer concentration on the pore structure of scaffolds was also investigated. The results showed that, the introduced approach not only can measure the pore size distribution of nanofibrous scaffolds, but also can measure pore interconnectivity of fibrous scaffolds. Furthermore, the results showed that increasing the fiber diameter resulted from increasing the polymer concentration in solvent can effectively increase the pore dimensions within the scaffold structure.

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Section: Resultssupporting

confidence: 57%

Three‐dimensional pore structure analysis of polycaprolactone nano‐microfibrous scaffolds using theoretical and experimental approaches

Bagherzadeh

Latifi

Kong

2013

J Biomedical Materials Res

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“…This might be due to the fact that the PCL 14% comparing with the other samples have a significant difference in mean fiber diameter (see Table II). As it mentioned in the literature61–64 fiber diameter have a major contribution to form the pore structure of the fibrous materials.…”

Section: Resultsmentioning

confidence: 91%

Three‐dimensional pore structure analysis of Nano/Microfibrous scaffolds using confocal laser scanning microscopy

Bagherzadeh

Latifi

Najar

et al. 2012

J Biomedical Materials Res

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Specific internal pore architectures are required to provide the needed biological and biophysical functions for fibrous scaffolds as these architectures are critical to cell infiltration and in-grows performance. However, the key challenging on evaluating 3D pore structure of fibrous scaffolds for better understanding the capability of different structures for biological application is not well investigated. This article reports a fast, accurate, nondestructive, and comprehensive evaluation approach based on confocal laser scanning microscopy (CLSM) and three-dimensional image analysis to study the pore structure and porosity parameters of Nano/Microfibrous scaffolds. Also a new method of making the fiber fluorescent using quantum dots (QDs) was applied before 3D imaging. Fibrous scaffolds with different porosity parameters produced by electrospinning and their 3D-pore structure was evaluated by this approach and the results were compared to results of capillary flow porometry. The pore structural properties measured in this approach are in good agreement with that measured by the capillary flow porometry (with significant level 0.05). Furthermore, the introduced approach can measure the pore interconnectivity of the scaffold.

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“…Textiles can be considered as soft materials with rough surfaces and complex material behaviour [145]. Skinfabric friction depends on textile parameters such as fibre materials, yarn design/morphology, surface structure, fabric construction, and finishing.…”

Section: Skin Mechanicsmentioning

confidence: 99%

Tribology of Skin: Review and Analysis of Experimental Results for the Friction Coefficient of Human Skin

2011

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In this review, we discuss the current knowledge on the tribology of human skin and present an analysis of the available experimental results for skin friction coefficients. Starting with an overview on the factors influencing the friction behaviour of skin, we discuss the up-to-date existing experimental data and compare the results for different anatomical skin areas and friction measurement techniques. For this purpose, we also estimated and analysed skin contact pressures applied during the various friction measurements. The detailed analyses show that substantial variations are a characteristic feature of friction coefficients measured for skin and that differences in skin hydration are the main cause thereof, followed by the influences of surface and material properties of the contacting materials. When the friction coefficients of skin are plotted as a function of the contact pressure, the majority of the literature data scatter over a wide range that can be explained by the adhesion friction model. The case of dry skin is reflected by relatively low and pressureindependent friction coefficients (greater than 0.2 and typically around 0.5), comparable to the dry friction of solids with rough surfaces. In contrast, the case of moist or wet skin is characterised by significantly higher (typically [1) friction coefficients that increase strongly with decreasing contact pressure and are essentially determined by the mechanical shear properties of wet skin. In several studies, effects of skin deformation mechanisms contributing to the total friction are evident from friction coefficients increasing with contact pressure. However, the corresponding friction coefficients still lie within the range delimited by the adhesion friction model. Further research effort towards the analysis of the microscopic contact area and mechanical properties of the upper skin layers is needed to improve our so far limited understanding of the complex tribological behaviour of human skin.

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Fibrous Materials as Soft Matter

Cited by 42 publications

References 48 publications

Three‐dimensional pore structure analysis of polycaprolactone nano‐microfibrous scaffolds using theoretical and experimental approaches

Three‐dimensional pore structure analysis of polycaprolactone nano‐microfibrous scaffolds using theoretical and experimental approaches

Three‐dimensional pore structure analysis of Nano/Microfibrous scaffolds using confocal laser scanning microscopy

Tribology of Skin: Review and Analysis of Experimental Results for the Friction Coefficient of Human Skin

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