The Preparetion And Properties Of Flexible Wearable Fiber

The emergence of new smart fibers and their textiles has led people into a new era of smart textiles.The preparation of smart fibers with new functions is an important field of new textile research.Smart fiber is regarded as a hope for sustainable development of the textile and garment industry by some experts because of its large aspect ratio and processability.However,the current research on smart fibers is mainly focused on the post-processing stage.That is,functional materials are combined with ordinary fibers by spraying or adsorption to obtain intelligent fibers with certain functions.This way greatly reduces the flexibility and weavability of the fiber,and the durability is not strong.The functional material is easy to peel off after multiple use,so that the functionality of the fiber is greatly reduced.Therefore,the preparation of functional fibers by spinning is of great significance.Based on this,two functional smart fibers were prepared by the spinning method.One is a light-emitting fiber with high luminosity and flexibility,and the other is a conductive fiber with biodegradability and conductivity.The structure and properties of the fiber are studied.The main research contents are as follows:1.Using polydimethylsiloxane(PDMS)as a flexible fiber-based composite aggregation-induced luminescence(AIEgens)material.The luminescent fiber with multi-luminous color,high elasticity,and excellent mechanical properties was successfully prepared by one-step extrusion and transient thermal curing spinning.The properties of the fiber were studied and analyzed by means of fluorescence spectroscopy(PL),scanning electron microscope(SEM),confocal laser scanning microscope(CLSM),optical microscope(OM),ultraviolet analyzer,universal testing machine and other analytical testing instruments.The results show that through the simple and easy-to-operate spinning method introduced in this experiment,a large number of light-emitting fibers with uniform diameter,high flexibility,and high luminescence can be prepared.Even if the content of the fluorophore is as low as 0.3wt%,the fiber can still emit uniform and bright light under the excitation of ultraviolet light;and the addition of the aggregation-inducing luminescent materials has very little effect on the stress and strain performance of the fiber,so the fiber has good mechanical properties,and can be woven directly into the light-emitting clothing by knitting,which is not possible with other light-emitting fibers.2.Biodegradable and sensing conductive fiber were prepared by dry-wet spinning with degradable chitosan(CS)as the fiber substrate and carboxylated multi-walled carbon nanotubes(MWNTs)as the conductive material,Scanning electron microscope(SEM),Fourier infrared spectroscopy(FT-IR),universal testing machine,digital source meter and other characterization and analysis instruments were used to analyze the performance of the fiber.the result shows.The carbon nanotube/chitosan composite material can not only form fibers by dry-wet spinning methods,but also can be used to prepare conductive and biodegradable materials with multiple forms by spin coating,writing,and other methods.When the carbon nanotube/chitosan fiber is prepared as a sensor,the resistance change rate could reach 9.3%.It shows excellent sensing performance.In this paper,the preparation of wearable functional fibers as the main body,through a simple and convenient one-step extrusion and transient thermal curing and dry-wet spinning methods to produce light-emitting fibers and conductive fibers with excellent properties,and its properties and applications are studied.The light-emitting fiber has high flexibility and lightness,and can be directly woven into a fabric;the conductive fiber can also be used as a sensor.It shows the research prospect of functional fibers in wearable devices,and provides a new method for the preparation of functional fibers.