New biosourced alternated poly(ether)Ester-Amides (PeEA): synthesis and combined NMR/MALDI ToF MS characterization

New biosourced alternated poly(ether)Ester-Amides PeEA were prepared by polycondensation in solution or in bulk of unprecedented aminoalcohols based on 1,4:3,6-dianhydrohexitols (DAH) with aromatic and aliphatic diacyl chlorides (sebacoyl, terephtaloyl and isophtaloyl). Optimization of the polymerization in solution has been investigated using MALDI ToF MS and NMR spectroscopy to ascertain the structures and end chain nature of the resulting polymers. The influence of the DAH stereochemistry and the polymerization mode on the structures and thermal properties was demonstrated by MALDI ToF and complementary analytical techniques (DSC and SEC). Isomannide based polymers revealed amorphous but showed higher T-g (around 80 A degrees C for sebacoyl and 180 A degrees C for isophtaloyl) whereas the isosorbide based polymers were semi crystalline. Best properties were obtained in bulk using isomannide based aminoalcohol and sebacoyl chloride (T-g of 82 A degrees C and Mw of 32 kDa, PDI = 1.41).