Aldimines derived from aryl and non-enolizable aliphatic aldehydes were allylated with allyl bromide mediated by indium powder in [bpy][BF4] (bpy = N-butylpyridine) to give good yields of the corresponding homoallylic amines. Selective formation of monoallylated amines can be achieved by varying the amount of bromide ion additive in the form of [bpy][Br]. The transient organoindium intermediates, allylindium(I) and allylindium(III) dibromide formed in the reaction, were studied by NMR spectroscopy to explain the selectivity.
Hollow fibers are highly valued in the textile industry. Their physical properties and other superior characteristics make them a crucial material for innovations in textiles in the medical field, where they could provide solutions to therapeutic challenges. The inner lumen of hollow fibers has potential for use in medical and healthcare devices. For example, hollow fibers could be used to deliver drugs to a target site, enhance blood purification, promote cell cultures, and enable drug screening. The use of hollow fibers could have beneficial effects for medical and therapeutic performance; a market for hollow fiber-based medical clothing is anticipated for promotion of an efficient, long-term, and convenient commercial medical therapy. This review discusses the development of medical textiles and describes the use of hollow fibers in different medical contexts, as well as the benefits of their use and their potential industrial applications in medical textiles and clothing.
Fiber technology has stepped into an essential position in the textile industry. It is forecasted that smart textiles will keep on developing constantly and vigorously. Having a convenient drug delivery system for treating various illnesses and bacterial infections is always in demand. Hollow fibers, which consist of a hollow structure and exceptional characteristics, such as high loading capacity and high surface reactivity, have been considerably used in medical equipment. A pilot study was performed in this paper for opening up environmentally friendly, convenient and repeatable drug delivery functions of industrial, ready-made hollow fibers for sustainable development in various aspects. The hollow fiber drug delivery system of this project is believed to tackle the challenges observed from the traditional drug delivery system, which include the following: (1) replacement of one-time delivery by repeatable drug loading and releasing; (2) loading complex drugs, such as in Chinese medicine; (3) using common materials available in the current textile market. Nylon 6 hollow fiber was the main subject of the pilot study. Its drug loading capability was investigated with the application of woven fabrics via the process of simple and direct drug loading under negative pressure (i.e. vacuum). The antibacterial performance of the drug-loaded fabrics and the drug release kinetics of the hollow fibers were examined.
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