MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: Inoue K, Yamauchi T, Itoh T, Ihara E
Article Title: Ionic Conductivity of Cross-linked Polymethacrylate Derivatives/Cyclophosphazenes/Li+ Salt Complexes.
Publication date: 2007
Journal: Journal of Inorganic and Organometallic Polymers and Materials
Volume: 17
Issue: (2)
Page numbers: 367-375.
DOI: 10.1007/s10904-007-9126-3

Abstract: The role of cyclophosphazenes with oxyethylene chains (N3P3(OCH2CH2)nOCH3, (n = 3, 3, n = 7.2, 4) and 4P4[OC6H4O(CH2CH2O)7.2CH3]8 (8) for the synthesis and ionic conductivity in polymethacrylate networks was studied. Reflecting the structural features of cyclophosphazenes, the 7Li NMR spectra of the mixture of 3 and LiN(SO2CF3)2 showed that more than 40% of the Li+ salt could exist as a free ion at room temperature. Similar values were obtained for 4 and 8. Cross-linked methacrylate polymers (12 - 14, and 16 - 18) were prepared from the reaction of poly(ethylene glycol) methyl ether methacrylate and poly(ethylene glycol) dimethacrylate both in the presence of these cyclophosphazenes which act as molecular imprinting molecules (method II, M-II) and without the cyclophosphazene (method I) DSC studies of the imprinted polymer, 12(20)/3/Li+ system after removal of the cyclophosphazene showed that the glass transition temperature range (Tg) becomes significantly narrower compared to that of the unimprinted 11(20)/3/Li+ system, where cross-linked polymer 11(20) was prepared in the absence of the cyclophosphazenes (method I, M-I). The ionic conductivity of the Li+/cross-linked polymer system was improved by the subsequent readdition of the cyclophosphazenes. The 12(20)/3/Li+ complex showed a conductivity of 1.1 x 10-3 S/cm at 90 C, which was two times higher than that of the 11(20)/3/Li+ complex. The effectiveness of the small molecule imprinting technique for the preparation of cross-linked polyelectrolytes with high conductivity and mechanical stability is discussed
Template and target information: cyclophosphazenes with oxyethylene chains, (N3P3(OCH2CH2)3OCH3, (N3P3(OCH2CH2)7.2OCH3, 4P4[OC6H4O(CH2CH2O)7.2CH3]8
Author keywords: Cyclophosphazene, polyelectrolyte, conductivity, cross-linked polymer


  Periodic table Crab Cakes - the chemical formula for a fishy snack shirt  Periodic table Bag bag  Meerkat somebody mention coffee mug

Molecules Special Issue call      Appeal for information






 

Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.


Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:



Mickey Mouse 90th Anniversary banner