Accession Number : AD1050742


Title :   Synthesis and Characterization of Block Copolymers with Unique Chemical Functionalities and Entropically-Hindering Moieties


Descriptive Note : Technical Report,06 May 2013,05 May 2017


Corporate Author : University of Puerto Rico at Mayaguez Mayaguez Puerto Rico


Personal Author(s) : Suleiman, David


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1050742.pdf


Report Date : 14 Aug 2017


Pagination or Media Count : 23


Abstract : This report describes the technical accomplishments obtained for the project entitled Synthesis and Characterization of Block Copolymers with Unique Chemical Functionalities and Entropically-Hindering Moieties. Novel ionic block block copolymers(ionomers) with multiple ionic domains were synthesized using atom transfer radical polymerization (ATRP). The resulting ionomer membranes were extensively characterized to understand the chemical (EA, FT-IR, NMR), thermal (TGA, DSC), morphological (AFM, SAXS, SANS), and transport properties for direct methanol fuel cell applications (e.g., proton conductivity and methanol permeability). Unique synergistic effects were observed due to the different ionic domains (e.g., sulfonic, ether, ketone, etc.).


Descriptors :   polymer chemistry , redox flow batteries , chemical engineering , alcohol fuels , polymermatrix nanocomposites , materials testing , aluminum oxides , direct methanol fuel cells , block copolymers , ENTROPY


Subject Categories : Polymer Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE