The present work was focused on the effects of acid and alkali on the uniaxial extensional deformation of gluten bioplastics compression‐molded at 80 and 110°C. Water absorption and morphology observation were also performed to characterize the properties and morphology of the gluten bioplastics. The results show that HCl did not show catalysis function for cross‐linking proteins at 80°C and even hindered the cross‐linking reaction at 110°C. On the other hand, NaOH generally accelerated the cross‐linking reaction during compression‐molding, thus significantly improving Young's modulus, tensile strength, and strain at break. However, an NaOH content >0.5 wt% could cause adverse effects at molding temperatures as high as 110°C.

As an efficient urban transportation mode, subway has been developing rapidly in China, which provides convenience for people to travel and also produces certain vibration pollution. How to "turn this pollution into treasure" has become a widely researched problem for scholars. The advent of piezoelectric materials provides a good solution for the collection of vibration energy. In today's increasingly short of natural resources, if the vibration energy can be reasonably used, energy-saving benefits can be greatly improved. In this paper, the subway track vibration model was formulated which mainly considered the effect of vertical vibration on the track, moreover, the piezoelectric cantilever working mode attached to the rail was analyzed, together with the establishment of the subway track generator equipment model. In this paper, the matching rectifier, filter and boost circuit are designed and the software simulation is carried out. The simulation results showed that the scheme was feasible and available to provide reference for the application of vibration energy storage system for subway track.