(317a) Stimuli-Responsive Smart Membranes for Controlled Release and Separations
As emerging artificial biomimetic membranes, smart membranes that are able to respond to environmental stimuli are attracting ever-increasing interest from various fields. Their surface characteristics and/or permeation properties including hydraulic permeability (pressure-driven convective flow of solvents) and diffusional permeability (concentration-driven molecular diffusion of solutes) can be dramatically controlled or adjusted self-regulatively in response to small chemical and/or physical stimuli in their environments, such as temperature, pH, glucose concentration, and chemical or biological species. Such environmental stimuli-responsive smart membranes could find myriad applications in numerous fields ranging from controlled drug delivery, to separation, water treatment, chemical sensors, chemical valves, and tissue engineering, etc.1 In this presentation, the trans-membrane mass-transfer and membrane separation is introduced as the beginning to initiate the requirement of smart membranes, and bio-inspired design of environmental stimuli-responsive smart membranes are introduced and discussed. Then, smart membrane types and their applications as smart tools for controllable mass-transfer in controlled release and separations are introduced. The research topics in the near future are also discussed.
1. L.Y. Chu. Smart Membrane Materials and Systems - From Flat Membranes to Microcapsule Membranes. Springer-Verlag Berlin Heidelberg (2011).