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Lovell CS, Ries ME, Ward IM, Montes de Oca H, Farrar D. Morphology, Phase Behavior, and Relaxation Processes in a Series of Aromatic–Aliphatic Thermotropic Polymer Biomaterials. Macromolecules 2013. [DOI: 10.1021/ma302338e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Michael E. Ries
- School of Physics & Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Ian M. Ward
- School of Physics & Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom
| | | | - David Farrar
- Smith & Nephew, York Science Park, Heslington, York YO10 5DF, United Kingdom
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Kalfon-Cohen E, Pegoretti A, Marom G. Annealing of drawn monofilaments of liquid crystalline polymer vectra/vapor grown carbon fiber nanocomposites. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jia X, Wolak J, Wang X, White JL. Independent Calibration of 1H Spin-Diffusion Coefficients in Amorphous Polymers by Intramolecular Polarization Transfer. Macromolecules 2003. [DOI: 10.1021/ma0215316] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xin Jia
- Department of Chemistry, Campus Box 8204, North Carolina State University, Raleigh, North Carolina 27695-8204
| | - Justyna Wolak
- Department of Chemistry, Campus Box 8204, North Carolina State University, Raleigh, North Carolina 27695-8204
| | - Xingwu Wang
- Department of Chemistry, Campus Box 8204, North Carolina State University, Raleigh, North Carolina 27695-8204
| | - Jeffery L. White
- Department of Chemistry, Campus Box 8204, North Carolina State University, Raleigh, North Carolina 27695-8204
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Kwak SY, Lee HY. Molecular Relaxation and Local Motion of Hyperbranched Poly(ether ketone)s with Reference to Their Linear Counterpart. 1. Effect of Degrees of Branching. Macromolecules 2000. [DOI: 10.1021/ma000262l] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Seung-Yeop Kwak
- Hyperstructured Organic Materials Research Center (HOMRC), and School of Materials Science and Engineering, Seoul National University, San 56-1, Shinlim-dong, Kwanak-ku, Seoul 151-742, Korea
| | - Hyun Young Lee
- Hyperstructured Organic Materials Research Center (HOMRC), and School of Materials Science and Engineering, Seoul National University, San 56-1, Shinlim-dong, Kwanak-ku, Seoul 151-742, Korea
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Melosh NA, Lipic P, Bates FS, Wudl F, Stucky GD, Fredrickson GH, Chmelka BF. Molecular and Mesoscopic Structures of Transparent Block Copolymer−Silica Monoliths. Macromolecules 1999. [DOI: 10.1021/ma9817323] [Citation(s) in RCA: 250] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- N. A. Melosh
- Departments of Chemical Engineering, Chemistry, and Materials, University of California, Santa Barbara, California 93106, and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - P. Lipic
- Departments of Chemical Engineering, Chemistry, and Materials, University of California, Santa Barbara, California 93106, and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - F. S. Bates
- Departments of Chemical Engineering, Chemistry, and Materials, University of California, Santa Barbara, California 93106, and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - F. Wudl
- Departments of Chemical Engineering, Chemistry, and Materials, University of California, Santa Barbara, California 93106, and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - G. D. Stucky
- Departments of Chemical Engineering, Chemistry, and Materials, University of California, Santa Barbara, California 93106, and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - G. H. Fredrickson
- Departments of Chemical Engineering, Chemistry, and Materials, University of California, Santa Barbara, California 93106, and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
| | - B. F. Chmelka
- Departments of Chemical Engineering, Chemistry, and Materials, University of California, Santa Barbara, California 93106, and Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
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Gentzler M, Patil S, Reimer JA, Denn MM. Molecular motion and orientation distributions in melt-processed, fully aromatic liquid crystalline polyesters from 1H NMR. SOLID STATE NUCLEAR MAGNETIC RESONANCE 1998; 12:97-112. [PMID: 9809783 DOI: 10.1016/s0926-2040(98)00056-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Fully-aromatic thermotropic liquid crystalline polymers (LCP) containing 4-hydroxybenzoic acid (HBA) and 6-hydroxy-2-naphthoic acid (HNA) were studied with 1H NMR. A two- or three-parameter nematic director distribution in molten or nearly molten samples was obtained via rigorous simulation of wideline spectral lineshapes. This methodology was further employed to yield the chain director distribution in macroscopic sections derived from a frozen contraction flow. In addition, the dynamic conformation of polymer chains through the melting transition was monitored via lineshape analysis of samples having (bulk) isotropic director distributions. Extension of rigorous 1H NMR spectral deconvolution to recently developed solid-state NMR imaging sequences is discussed.
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Affiliation(s)
- M Gentzler
- Center for Advanced Materials, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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