Exploration and Practice of Experimental Teaching Based on the Integration of Science and Education—A Case Study on Preparation and Characterization of Nano-sized Spherical Polyelectrolyte Brushes
To promote the understanding and application of the fundamental knowledge of colloid chemistry and nanomaterials for undergraduates in light chemical engineering major,the experiment of preparation and characterization of nano-sized spherical polyelectrolyte brushes is introduced.The brushes with uniform size and excellent stability are prepared through a photoemulsion polymerization approach which involves the preparation of uniform polystyrene nanoparticles and the growth of polyelectrolyte chains from the surface of polystyrene nanoparticles.The size,size distribution,surface property and their dependences on pH and salt concentrations are systematically investigated by dynamic light scattering.This experiment would be beneficial for students to understand and practice the learned knowledge and to develop serious scientific thought,accelerating the cultivation of creative talents in engineering and technology.
Light chemical engineeringExperimental teachingIntegration of science and teaching
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