Conjugate spinning fiber

Other studies in 2000 by Drew et al. reported that it is very difficult to spin fibers of PANI complexed to sulfonated polystyrene (PANFSPS), even when solutions containing sodium chloride and dodecyl benzene sulfonic acid sodium salt were used to lower the surface tension and thereby enhance electrospinning [16,17]. However, PANFSPS nanofibers can be produced by adding a carrier polymer such as PEO, polyacrylonitrile, or polyurethane. Also reported was the use of electrostatically layered sulfonated polystyrene as a template for the surface polymerization of conjugated polymers in their conducting form. Enzymatic synthesis of PANI and a copolymer of pyrrole and PEDOT was done on electrospun nanofiber... 

Im et al (2007) have developed a manufacturing technique to produce monofilament sutures by a conjugate spinning method. Two absorbable polymers, PDS and a copolymer of / -dioxanone, trimethylene carbonate and e-caprolactone were used in this spinning method. The resulting bicomponent monofilament suture fiber (MonoFlex ) has 97 mol% / -dioxanone and exhibits the sea/islands type cross-sectional morphology shown in Fig. 11.2. These sea/island type bicomponent materials can place many fine strands... 

Figure 2.15 Crimping—bulking fibers made by conjugate spinning [39].

Can you image that we can reach from the earth to the moon with a total weight of 4.16 g ultra microfiber But it is tme. This microfiber contains about 40,000 polymer molecules in its cross section [44]. Textile Terms and Definitions [44] simply describes ultra microfiber as fibers or filaments with linear densities of approximately 1.0 dtex or less. By the conjugate spinning process, we can obtain different ultrafine fibers, like Sea Island type, separation type, and multilayer type (Fig. 2.17). 

Rotations around torsional barriers induce changes in chain conformation. For conjugated systems like polydiacetylenes, flow-induced changes in chain conformation can have a profound influence on the photon absorption and electronic conductivity properties of the material [73]. Flow-induced changes in molecular conformation form the basis for several technically important processes, the best known examples are the production of oriented fibers by gel spinning [74], the compatibility enhancement [75] and the shear-induced modification of polymer morphology [76]. 

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