Application Of Azoimidazolium Surfactants In Preparing Of Multiresponse Composites In Different Systems

With the occurrence of "smart" manufacturing in today’s society,it is urgent to gain materials with response.The original single response material can’t satisfy demands of production life,thus the research key is to design and synthesize materials with multiple responses.On the other hand,many materials have the extremely excellent performance in the specific fields.Affected by physical and chemical properties,their application in some scenes is limited.If the molecular structure is rationally embellished,these materials can be applied in the scenes that they have been unusable before.Also,it has a chance to own the extra stimulative response and expand their application potential.In this paper,a convenient method was proposed,namely the surfactant with the azobenzene imidazole group was introduced to construct the multi-response composite materials under the different systems.The main research tasks were shown as follows:1.The azoimidazolium cationic surfactants(AzoIm+)was introduced in the sol-gel process.Moreover,UV-irradiation and non-illumination were selected as the control conditions for the light response study.Similarly,different heating conditions were established for samples to study the heat response behavior of the composite materials.In addition,mechanical force and polarized light were used as the response signals of the liquid crystal unit to introduce into the predation process,so as to study influences of surfactant’s liquid crystal unit on composite material structure.X-ray diffractometer,transmission electron microscope and scanning electron microscope were used in the prepared composite materials for representation.Also,the study verified whether composite materials successfully introduced multiple responses and studied the different performance of composite materials under the multiple stimulative responses.2.Graphene oxide and AzoIm+ surfactant were mixed in different proportions.The prepared composite materials were represented to verify whether samples had the light and heat responses and whether liquid crystal unit developed the responses to mechanical force and anisotropy of substrate.The thermal gravimetric analyzer revealed that surfactant had the unique controlled-release role on the heat release ofgraphene oxide.Meanwhile,atomic force microscope,differential thermal scanner and ultraviolet and visible spectrophotometer were used to further represent multiple responses.3.AzoIm+ surfactant was added in three different assembling systems,including inorganic,organic and biological nanometer materials,finding that AzoIm+ surfactant could develop a role of soft template.X-ray diffraction transmission electron microscopy and scanning electron microscope were used for the assembled nanometer materials to represent structure and morphology,finding that three nanometer materials had ultra-thin laminated two-dimensional structure.On the basis of designing and synthesizing azobenzene cationic surface active agent,AzoIm+ surfactant was successfully used in different systems to successfully construct multiple composite materials with the multiple responses.AzoIm+ surfactant was added in sol-gel system and graphene oxide system.Both of composite materials had the light and heat responses.The liquid crystal response unit in AzoIm+ surfactant was successfully introduced two composite materials,thus composite materials had some responses to anisotropic mechanical force and substrate,but two composite material systems might be slightly different,because physical and chemical properties of embellished materials were different.in the sol-gel system,composite material structure was affected by the polarized light.Different directions showed the different orders.In graphene oxide system,addition of surfactant could control thermal release and electrochemistry of graphene oxide.Furthermore,surfactant was added in the synthetic process of different materials,finding that the AzoIm+ surfactant could act as the soft template under the different systems and assemble nano materials with ultra-thin laminated structure.