Molecular design of the polymer forming the complex with metal. Part IV. Complexation of pyridine-containing polyisoprene with zinc
作者:N Moriguchi、T Tsugaru、S Amiya
DOI:10.1016/s0022-2860(00)00961-3
日期:2001.5
Two types of polyisoprenes modified by N-pyrid-2-ylmethyl amide (MPY) group were synthesized, and their complexation with ZnCl2 and the thermal property of complexes were investigated. Although these polymers are viscous liquid, the complex is solid at room temperature. MPY modified polyisoprene in which MPY connected a main chain without a spacer (MPYIP) shows the non-stoichiometric complexation, so that the melting temperature of the complex is low (105 degreesC). On the other hand, MPY modified polyisoprene with a C5 spacer (MPYC5IP) shows the high melting temperature (143 degreesC), It is surprising that the glass-transition temperatures of the complexes are almost as same as that of polyisoprene. These results indicate that the presence of the spacer effectively enhances the aggregation of polymers. As a result, MPY is a novel functional structure, since MPY-ZnCl2 complex functions as an excellent hard-segment in various flexible polymers. (C) 2001 Elsevier Science B,V. All rights reserved.