▎ 摘　　要

NOVELTY - Microfluidic chip, comprises a cylindrical glass capillary tube (4) extending into an outer phase square glass capillary tube (1) from the right end of the outer phase square glass capillary tube. The outlet of the outer phase square glass capillary tube is used as a collecting outlet (7). One end of a conical glass capillary tube (2) is a tapered structure, and the tapered structure end of the conical glass capillary tube extends into the cylindrical glass capillary tube from the left end of the outer phase square glass capillary tube. The inlet of the conical glass capillary tube is used as the inner phase solution inlet (5). The glass sheet arranged in the axial direction in the conical glass capillary tube divides interior into two semicircular regions, one of which is provided with an inner phase cylindrical glass capillary tube. The inlet of the inner phase cylindrical glass capillary tube is used as the pre-polymer inlet. USE - The self-twisting composite hydrogel fiber is useful in power generation equipment, soft actuator and artificial muscle (claimed). ADVANTAGE - The method provides self-torsion composite hydrogel fiber with high efficiency and controllable working condition at low temperature. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: method for preparing composite hydrogel fibers using a microfluidic chip; and preparing self-twisting composite hydrogel fiber using composite hydrogel fiber. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of the microfluidic chip. 1Outer phase square glass capillary tube 2Conical glass capillary tube 3Inner phase cylindrical glass capillary tube 4Cylindrical glass capillary tube 5Inner phase solution inlet 6Outer phase solution inlet 7Collecting outlet 8Pre-polymer inlet