Polyaspartic acid (PASP) was introduced into polyacrylamide/polypyrrole (PAAm/PPy) conductive hydrogel by using acrylamide(AM) as monomer and N,N-methylene bisacrylamide(MBA) as crosslinking agent.The effects of content of PASP on the mechanicalproperties and electrical conductivity of the hydrogel were systematically investigated.The introduction of PASP not only improved the conductive properties of the hydrogel,but also effectively improved its mechanical properties.The hydrogel showed the best comprehensive performance when the content of PASP was 10%.The electrical conductivity was up to 1.19S/m,the elongation at break increased from 110% to 633%,and the tensile strength improved from 55kPa to 117.5kPa.The gauge factor(GF) was up to 1.88 at the strain to be 400%.The strain sensors based on the hydrogel demonstrated reliable monitor of repeated large strains and subtle vibrations,including the movements of finger joints and throat.
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基金资助
山西省重点研发项目(201803D121034);山西省应用基础研发项目(201801D221073)
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