Pervaporation has been applied for tetrahydrofuran (THF) dehydration with novel composite membranes advanced by a thin selective layer composed of chitosan (CS) modified by copolymerization with vinyl monomers. acrylonitrile (AN) and styrene. in order to improve the chemical and mechanical stability of CS-based membranes. Composite membranes were developed by depositing a thin selecti... https://www.roneverhart.com/San-Diego-Padres-Indigo-Graphite-Collection-1998-World-Series-Fitted-Hat/