FTIR spectra of plasticized grafted natural rubber-LiCF3SO3 electrolytes.

摘要: Abstract Chemical modification of natural rubber (NR) has frequently been attempted to improve the performance in specific application. 30% poly(methyl metacrylate) (PMMA) grafted into NR (MG30) explored as a potential candidate for polymer electrolytes. The complexation effect salt and plasticizer host electrolytes had investigated using FTIR. carbonyl stretch MG30 locates at 1729 cm−1, with addition lithium trimethanesulfonate (LiCF3SO3) salt, new band evolves lower frequency region 1643–1645 cm−1. nondegenerate vibrational mode νs(SO3) salted appearing 1031–1034 cm−1 comes from ‘free’ anions 1040–1046 cm−1 absorption monodentate ion paired triflates. These indicate MG30–salt interaction. When ethylene carbonate (EC) formed film, CH3 asymmetric bend 1447 cm−1 is shifted 1449 cm−1 EC–polymer complex. C O stretching 1729 cm−1 also 1728 cm−1. Hence, EC–MG30 system complexed each other. EC–LiCF3SO3 interactions are indicated by shifting bending EC 718 cm−1 being 720 cm−1 In Li+–EC interaction where ring breathing 897 cm−1 899 cm−1 EC–salt spectrum. 1643–1645 cm−1 due coordination Li+ ← O–C still under observation peaks 1779 1809 cm−1 responsible stretches plasticized salt–polymer