Title List مقالات لاتين Ɛ-Caprolactone and Tetrahydrofuran Copolymerization with a Green Acid Activated Montmorillonite Catalyst: Reaction Optimization with the Taguchi Method Ɛ-Caprolactone and Tetrahydrofuran Copolymerization with a Green Acid Activated Montmorillonite Catalyst: Reaction Optimization with the Taguchi Method