An introduction to healthcare and medical textiles by Zhong, Wen

By Zhong, Wen

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Other processing parameters that affect the morphology and properties of nanofibers include feed rate (which influences the amount of solution available for electrospinning), orifice size of the needle (which affects the possibility of clogging at the orifice during electrospinning), and the conductivity of the collector (which affects the stability of potential difference between the needle tip and the collector). Ambient conditions may also affect the electrospinning process. Ambient temperature, when elevated, may exponentially increase the evaporation rate of the solvents and reduce (also exponentially) the viscosity of the polymer solution during electrospinning.

Woven, knit or nonwoven), 3D braids and 3D woven structures, depending on the end uses. The polymeric matrices of composites can be classified into two general groups: thermosets and thermoplastics. , curing). Such processes, however, are not reversible. , polyester, nylon and polypropylene), on the other hand, can be repeatedly heated to melt, and cooled down to consolidate. As a result, thermoplastics make it possible for the composite materials or parts to be repaired or reformed. Other matrices, like metals and ceramics, are also available to construct composite materials for high-temperature end uses.

A good example of such product development is the self-adhesive elastic retention bandage for wound care, as detailed in Chapter 8. 5. FABRICS AND 3D STRUCTURES “Fabric” usually refers to the two-dimensional (2D) structures formed by the interlacing or binding of fibers and/or yarns, including woven, knit, nonwoven and compound fabrics. There are also threedimensional (3D) structures that are made from fibers and/or yarns and used for special applications. These structures will be briefly introduced in this section.

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