High-tensile hydrogel conductive optical fiber as well as preparation method and application thereof

Abstract

The invention provides high-tensile hydrogel conductive optical fiber. The high-tensile hydrogel conductive optical fiber comprises a polyacrylamide inner core and a polyacrylate coating layer; the polyacrylamide inner core is anionic polyacrylamide hydrogel fiber doped with metal ions; and the metal ions are one or more of Na<+>, K<+>, Li<+>, Ca<+>, Mg<2+>, Fe<3+> and Zn<2+>. According to the invention, the ions are doped into a polymer chain of the polyacrylamide fiber to form crosslinking, so that the mechanical property is enhanced, ionic conductivity is provided, and the water evaporation and freezing point of hydrogel are reduced by utilizing the high hydration degree of the ions. PMA is selected as the coating layer of the optical fiber, so that the moisture content of the fiber is kept for a long time without being influenced by the external environment, and light is limited in the core to be totally reflected for conduction. The invention further provides a preparation method and application of the high-tensile hydrogel conductive optical fiber.

Description

technical field [0001] The invention belongs to the technical field of biomedicine, and in particular relates to a high-stretch hydrogel conductive optical fiber, its preparation method and application. Background technique [0002] Hydrogel is a three-dimensional cross-linked porous polymer with unique properties such as good mechanical strength, flexibility, and biocompatibility. Conductive hydrogels with additional conductivity, which combine high conductivity and softness, become one of the ideal interface materials to achieve perfect compatibility between the human body and bioelectronic devices. [0003] Currently, conducting polymer hydrogels can be divided into two categories, conducting polymer hydrogels and ionically conducting hydrogels. One is to introduce conductive components such as conductive polymers or nanomaterials into the hydrogel based on electron transport. However, most conductive materials are expensive, and the conductive components are very easy t...

AI Technical Summary

Problems solved by technology

In recent years, some flexible hydrogel optical fibers with stretchability and low dissipation have been developed for the biomedical field, most of which are hydrogel fibers based on calcium alginate / acrylamide (AAm) core-sheath structure. , the preparation method of using tubular mold molding, this complicated process is difficult for the continuous preparation of large-sized optical fibers, and the cost is too high

Moreover, existing hydrogel-based optical fibers are still difficult to combine optical, electrical, mechanical properties and stability to meet application requirements.

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