Photoshrinkage superfine intelligent fiber and preparation method thereof

The invention discloses a photoinduced shrinkage superfine intelligent fiber and a preparation method thereof.The intelligent fiber is prepared on the basis of quasi-polyrotaxane gel with photoresponsiveness, and quasi-polyrotaxane is constructed through the subject-object effect of azobenzene bridged double-arm pillararene and a triblock copolymer; the azobenzene bridged double-arm pillar arene is methoxy pillar [5] arene-azobenzene-methoxy pillar [5] arene, and the triblock copolymer is polycaprolactone block polyethylene glycol block polycaprolactone. According to the photoinduced shrinkage superfine intelligent fiber and the preparation method thereof, the superfine intelligent fiber is obtained through a method of directly pulling from gel, and azobenzene-containing microcrystals formed by rearrangement of molecules in the stretching process serve as physical crosslinking and store internal stress energy of fiber shrinkage, so that regular arrangement of azobenzene molecules is destroyed through ultravio