Actuation Performance And Deflection Mechanism Of Biological Gel Electroactive Polymer

Currently,Biological Gel Electroactive Polymer(shorted as BG-EAP),as an emerging artificial muscle,has the advantages of convenient preparation,low driven voltage(<10V),good biological compatibility,flexibility,low price,etc.It behaves broad application prospects on the areas of aerospace,underwater equipment,bionic manufacturing,biomedical treatment and energy collection,and so on.Therefore,BG-EAP has become a research focus in the academia,and it is listed as one of the forefront technology of national high-tech innovation.Also,it is an emerging area in artificial intelligence in the 21 st century.In view of high-cost,toxicity,poor biological compatibility of polymer and crosslinking agent,a BG-EAP based on chitosan as polymer is developed,and its preparation method is put forward.Using the biological crosslinking method,the influence law of the actuation performance of BG-EAP under the crosslinked polymer is studied.Focused on the movement deflection problem of BG-EAP induced by internal movement ions as the dilute acid solution and ionic liquids,the actuation performance rules of BG-EAP with various ion electrolyte solutions are investigated.The deflection mechanism of BG-EAP is clarified,and the control method of the deflection behavior is given.The main research works of this paper are described in the following aspects.First of all,the preparation method of BG-EAP based on chitosan as polymer is developed.The experimental test methods and the performance evaluation system for the actuation performance are built.Based on the orthogonal experiment method,the hot-pressing effects of four factors and three levels on the permeability layer of BG-EAP are studied.And the orthogonal experiment results are verified by the analysis on the actuation performance of BG-EAP.Secondly,using ionic liquid as ion electrolyte solution,the actuation performance of BG-EAP under the electrode layer with different mass fraction of MCNT and the electrolyte layer with different thickness are presented.The electro-mechanical efficiency model of BG-EAP is established,and the electro-mechanical efficiency under different mass fraction MCNT is studied.The relationship between strain and Young's modulus is illustrated by three layer electrode model of BG-EAP.The failure analysis confirms that material properties of the electrolyte layer have no change before and after experiment.Thirdly,BG-EAP using the dilute acid solution,such as acetic acid solution,lactic acid solution,nitric acid solution,as ion electrolyte solution is fabricated,and the actuationperformances between BG-EAP with ionic liquid and BG-EAP with dilute acid solution are contrasted.The reasons of the performance difference appearing in BG-EAP with various dilute acid solutions are given.The effects of ions properties and the mechanical properties on the actuation performance are clarified.Additionally,BG-EAP formed polymer network is prepared by using the natural crosslinking agent of genipin.And the facticity of the polymer network inside the electrolyte layer is validated by FT-IR test.The actuating performance of BG-EAP under different crosslinked ratio is researched.The mechanism of crosslinked polymer to improve actuation performance of BG-EAP is elucidated.The large polymer crosslinked network will make the water leakage in the electrolyte layer,which causes the missing of ion electrolyte solution.On the contrary,the small polymer crosslinked network will constrain ion movement,which increases the resistance of ion movement.Finally,the anode deflection phenomenon of BG-EAP with ionic liquid and the cathode deflection phenomenon of BG-EAP with dilute acid solution are studied,and an excellent actuation performance of BG-EAP with dilute acid solution is demonstrated.The anode deflection mechanism of BG-EAP is elucidated,and the control method of the deflection direction is provided.Based on the Nernst-Planck equation,the multi-physical field model of BG-EAP is established.And the reliability of multi-physical field model is verified by the experimental test.