Open Access. Powered by Scholars. Published by Universities.®
- Publication
Articles 1 - 3 of 3
Full-Text Articles in Engineering
Synthesis Of Laterally Attached Side-Chain Liquid-Crystalline Polynorbornenes With High Mesogen Density By Ring-Opening Metathesis Polymerization, Coleen Pugh, Pukun Zhu, Guehyun Zhu, Joe Zheng, Michael Rubal
Synthesis Of Laterally Attached Side-Chain Liquid-Crystalline Polynorbornenes With High Mesogen Density By Ring-Opening Metathesis Polymerization, Coleen Pugh, Pukun Zhu, Guehyun Zhu, Joe Zheng, Michael Rubal
Coleen Pugh
(±)-exo,endo-5,6-Bis{[[11′-[2″,5″-bis[2-(3′-fluoro-4′-n-alkoxyphenyl)ethynyl]phenyl]undecyl]oxy]carbonyl}bicyclo[2.2.1]hept-2-ene (n = 1–12) monomers were polymerized by ring-opening metathesis polymerization in tetrahydrofuran at room temperature with Mo(CHCMe2Ph)(N-2,6-iPr2Ph)(OtBu)2 as the initiator to produce polymers with number-average degrees of polymerization of 8–37 and relatively narrow polydispersities (polydispersity index = 1.08–1.31). The thermotropic behavior of these materials was independent of the molecular weight and therefore representative of that of a polymer at approximately 15 repeat units. The polymers exhibited an enantiotropic nematic mesophase when n was 2 or greater. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 4076–4087, 2006
Structure And Morphology Of Segmented Polyurethanes: 1. Influence Of Incompatibility On Hard-Segment Sequence Length, William Macknight, M. Xu, C. H. Y. Chen, E. L. Thomas
Structure And Morphology Of Segmented Polyurethanes: 1. Influence Of Incompatibility On Hard-Segment Sequence Length, William Macknight, M. Xu, C. H. Y. Chen, E. L. Thomas
William MacKnight
No abstract provided.
Compatibility Of Poly(P-Fluorostyrene-Co-O-Fluorostyrene) With Poly(2,6-Dimethyl-1,4-Phenylene Oxide) And Polystyrene, William Macknight, R. Vukovic, F. E. Karasz
Compatibility Of Poly(P-Fluorostyrene-Co-O-Fluorostyrene) With Poly(2,6-Dimethyl-1,4-Phenylene Oxide) And Polystyrene, William Macknight, R. Vukovic, F. E. Karasz
William MacKnight
No abstract provided.