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| 1 | Anionic synthesis of secondary amine functionalized polymers by reaction of polymeric organolithiums with N‐benzylidenemethylamine显示文摘 | Roderic P.Quirk Tae‐HeeCheong TaejunYoo | 2002 | Macromol Chem Phys2002，，9： | 1 |
| 2 | MOLECULAR AND SUPRAMOLECULAR ORDERING IN CONFINED ENVIRONMENTS显示文摘Crystal and phase morphologies and structures determined by self-organization of crystalline-amorphous diblockcopolymers, crystallization of the crystallizable blocks, and vitrification of the amorphous blocks are reviewed through asystematic study on a series of poly(ethylene oxide)-b-polystyrene (PEO-b-PS) diblock copolymers. On the base ofcompetitions among these three processes, molecular and supramolecular ordering in confined environments can beinvestigated. In a concentration-fluctuation-induced disordered (DCF) diblock copolymer, the competition between crystalli-zation of the PEO blocks and vitrification of the PS blocks is momtored by time-resolved simultaneous small angle X-rayscattering (SAXS) and wide angle X-ray diffraction (WAXD) techniques. In the case of Tc<TgPS-rich, the crystallization of thePEO blocks is observed to be confined within the bicontinuous DCF phase due to the rapid vitrification of the PS-rich phase.Overall crystallization rate, crystal melting behavior, and crystallinity results further confirm the competition betweencrystallization and vitrification at different temperatures. In an ordered lamellar PEO-b-PS diblock copolymer, the crystalli-zation of the PEO blocks is completely confined within the ordered lamellae due to rapid vitrification of the PS layers asobserved by time-resolved SAXS and WAXD experiments. From the combined two-dimensional SAXS and WAXDmeasurements, the crystal orientation within the confined lamellar geometry is found parallel to the lamellar surface normalwhen it is isothermally crystallized at 35℃. In an ordered cylindrical PEO-b-PS sample, the crystallization of the PEO blocksis also observed to be confined within the ordered cylinders because of rapid vitrification of the PS matrix. The crystalorientation within the confined cylinders is found perpendicular to the cylinder axis as it is crystallized at 35℃. | Stephen Z.D.Cheng Bret H.Calhoun Roderic P.Quirk Benjamin S.Hsiao | 2000 | Chinese Journal of Polymer Science2000，18，4： | 0 |
| 3 | Anionic Synthesis of Primary and Secondary Amine-Functionalized Polymers Using Imine Chemistry显示文摘A review of methods for the anionic synthesis of well-defined, amine-functionalized polymers using imines as functionalizing agents is provided. The disparate results in the literature regarding functionalizations with N -(benzylidene)trimethylsilylamine to form primary amine functionalized polymers are discussed; the efficiency of functionalization depends on the molecular weight of the polymeric organolithium(PLi). Efficient functionalizations are observed for PLi with n>10 000 g/mol. The poor functionalization yields using ketimines with enolizable hydrogens is explained. The use of N -trimethylsilyldiphenylcarbimide as a quantitative primary amine functionalizing reagent is described. Recent results on the anionic synthesis of secondary amine-functionalized polymers using N -(benzylidene)methylamine as the functionalization agent are presented. | Roderic P.QUIRK, Taejun YOO, Tae-Hee.CHEONG, Youngjoon LEE (Maurice Morton Institute of Polymer Science,The University of Akron, Akron,Ohio,44325-3909,U.S.A.) Dedicated to the Occasion of the 80th Birthday of Prof.HUANG Bao-Tong and Prof.Feng Zhi-Li | 2001 | 应用化学2001，18，5： | 0 |
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