| 초록 |
Thermoplastic poly(ether ester) elastomers(TPEEs) have been synthesized in the presence of homogeneous catalysts such as titanium tetrabutoxide, tin complexes etc. Even if the homogeneous catalysts are effective at being highly selective towards producing the desired product, as the reactants and catalysts are in the same phase, separation and reusability of catalysts are difficult. Hence, herein we have designed certain heterogeneous catalysts to enhance the performance of TPEE synthesis. During the synthesis process, methanol by-product was collected and measured to check the reactivity. A series of TPEEs have been synthesized by using 1,4-butanediol as chain extender, poly(tetramethylene ether glycol) as soft segment, and dimethyl-2,6-naphthalenedicarboxylate as hard segment and the catalyst has been optimized by varying the amount from 15 mg to 100 mg to investigate the effect of heterogeneous catalysts on reactivity and physical properties of resultant elastomers. |
