Investigating linear and nonlinear viscoelastic behaviour and microstructures of gelatin-multiwalled carbon nanotube composites

摘要: We have investigated the linear and nonlinear rheology of various gelatin-multiwalled carbon nanotube (gel-MWNT) composites, namely physically-crosslinked-gelatin gel-MWNT chemically-crosslinked-gelatin chemically–physically-crosslinked-gelatin composites. Further, internal structures these composites were characterized by ultra-small angle neutron scattering scanning electron microscopy. The adsorption gelatin onto surface MWNT is also to understand gelatin-assisted dispersion during ultrasonication. For all gels, addition increases their complex modulus. dependence storage modulus with frequency for gelatin-MWNT similar that corresponding neat matrix. However, incorporating MWNT, loss on reduced. viscoelastic region decreased approximately linearly increase concentration. pre-stress results demonstrate does not change strain-hardening behaviour physically-crosslinked gel. can chemically-crosslinked gel, chemically–physically crosslinked Results from light microscopy, cryo-SEM, USANS hierarchical including tens-of-micron scale agglomerates are present. Furthermore, curve follows a two-stage pseudo-saturation behaviour.