Abstract :
[en] The low-kinetic energy collision-induced dissociation (CID) behavior of different sodiumcationized polylactide (PLA) oligomers was thoroughly investigated to shed some light on the analytical potentialities of CID experiments in the context of polymer characterization. Indeed, investigation of several end-groups modified PLA reveal that, in addition to the expected end-group specific dissociations, collisionally-excited PLA.N suffer from a backbone cleavage. The so-obtained sodium-bound dimer cations consecutively undergo the loss of a monomeric residue that corresponds to neutral acrylic acid. The experimental observations, performed on a hybrid Q-ToF instrument, were totally corroborated by a theoretical study involving DFT calculations, molecular mechanics, and molecular dynamics calculations.
Commentary :
Publié en ligne le 27 mars 2010
Lecture en ligne: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TH2-4YPT1R8-2-17&_cdi=5270&_user=532054&_pii=S1044030510002163&_origin=search&_coverDate=07%2F31%2F2010&_sk=999789992&view=c&wchp=dGLbVlb-zSkzV&md5=51f23475a83cef8d0f82d47fc82088e
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