EFFECT OF DC DISCHARGE PLASMA ON CHITOSAN-BASED FILMS: SURFACE PROPERTIES AND IN VITRO EVALUATION

This work was aimed at studying the effect of DC discharge plasma modification of films casted from various chitosan samples and chitosan/poly(L,L-lactide)/gelatin graft-copolymers on their surface properties, chemical structure and cell response. Contact angle measurements, XPS and SEM showed that in spite of the similarity of the observed processes, such as surface hydrophilization and etching, the contribution of each process significantly depended on the initial polymer films characteristics.224-22

Exclusive gamma gamma -> mu(+)mu(-) production in proton-proton collisions at root s=7TeV

A measurement of the exclusive two-photon production of muon pairs in proton-proton collisions at root s = 7 TeV, pp -> p mu(+)mu(-) p, is reported using data corresponding to an integrated luminosity of 40 pb-1. For muon pairs with invariant mass greater than 11.5 GeV, transverse momentum p(T)(mu) > 4 GeV and pseudorapidity 1770.1) p mu(+)mu(-) p) - 3.38(-0.55)(+0.58) (stat.)+/- 0.16 (syst.) +/- 0.14 (lumi.) pb, consistent with the theoretical prediction evaluated with the event generator LPAIR. The ratio to the predicted cross section is 0.83+(0.14)(-0.13) (stat.) +/- 0.04 (syst.) +/- 0.03 (lumi.). The characteristic distributions of the muon pairs produced via Ty fusion, such as the muon acoplanarity, the muon pair invariant mass and transverse momentum agree with those from the theory

Materials based on protein-contained chitosan-g-oligo-/polylactide copolymers synthesized through mechanochemical approach

WBI Bilateral agreement with Sechenov University (Moscow

EFFECT OF DC DISCHARGE PLASMA ON CHITOSAN-BASED FILMS: SURFACE PROPERTIES AND IN VITRO EVALUATION

224-224This work was aimed at studying the effect of DC discharge plasma modification of films casted from various chitosan samples and chitosan/poly(L,L-lactide)/gelatin graft-copolymers on their surface properties, chemical structure and cell response. Contact angle measurements, XPS and SEM showed that in spite of the similarity of the observed processes, such as surface hydrophilization and etching, the contribution of each process significantly depended on the initial polymer films characteristics