02148nas a2200265   4500008004100000022001400041245010600055210006900161260000900230300001100239490000800250520122800258653002901486653003101515653002401546653001701570653001001587100002601597700002201623700002401645700002401669700003301693700002401726856013201750       2020                        eng d  a0014-305700aRenewing polyethylene: insertion copolymerization of sugar derived hydrophilic monomers with ethylene0 aRenewing polyethylene insertion copolymerization of sugar derive  cJUL   a1097750 v1343 a<p>Although highly desirable, insertion copolymerization of renewable resource derived functional olefins with ethylene has been rarely investigated. Herein, we report insertion copolymerization of challenging sugar derived isohexide mono-enes with ethylene in the presence of Pd-phosphinesulfonate acetonitrile catalyst (C1). Thus, copolymerization of ethylene with isomannide mono-ene (2a), isosorbide mono-ene (2b'), isoidide mono-ene (2c) and methacryl-2,3,4,6-tetra-O-acetyl-D glucopyranoside (2d) afforded corresponding functionalized polyethylene (P2a-1 to P2d-1). High temperature proton NMR investigations revealed enchainment of 2a-2c in polyethylene backbone and the highest incorporation of 1.45% was observed for 2c. The high temperature proton NMR results were further corroborated by solid state C-13 NMR and IR spectroscopy. Gel permeation chromatography analysis displayed weight average molecular weight in the range of 13.0-27.2 x 10(3) g/mol. The thus prepared copolymers revealed melting temperature in the range of 117-126 degrees C. Relatively reduced melting temperature compared to neat polyethylene may suggest an irregular arrangement of pendant functional group on polyethylene main chain.</p>
10aHydrophilic polyethylene10ainsertion copolymerization10aIsohexide mono-enes10aPolyethylene10aSugar1 aRajput, Bhausaheb, S.1 aPawal, Sandip, B.1 aBodkhe, Dnyaneshwar1 aRao, Nagamalleswara1 aSainath, Annadanam, V. Sesha1 aChikkali, Samir, H.  uhttps://library.ncl.res.in/content/renewing-polyethylene-insertion-copolymerization-sugar-derived-hydrophilic-monomers-ethylene