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1
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Choudhury RP, Lee JS, Kriegel RM, Koros WJ, Beckham HW. Chain Dynamics in Antiplasticized and Annealed Poly(ethylene terephthalate) Determined by Solid-State NMR and Correlated with Enhanced Barrier Properties. Macromolecules 2012. [DOI: 10.1021/ma202012h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rudra Prosad Choudhury
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Jong Suk Lee
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | | | - William J. Koros
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Haskell W. Beckham
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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2
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Maeda T, Otsuka H, Takahara A. Dynamic covalent polymers: Reorganizable polymers with dynamic covalent bonds. Prog Polym Sci 2009. [DOI: 10.1016/j.progpolymsci.2009.03.001] [Citation(s) in RCA: 311] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Chen L, Huang HZ, Wang YZ, Jow J, Su K. Transesterification-controlled compatibility and microfibrillation in PC–ABS composites reinforced by phosphorus-containing thermotropic liquid crystalline polyester. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.04.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Wu D, Zhang T, Wang WC, Zhang L, Jin R. Reflective and conductive surface-silvered polyimide films prepared by surface graft copolymerization and electroless plating. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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5
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Han M, Kim WN, Giles DW. Rheology of blends of a thermotropic liquid crystalline polymer with polyphenylene sulfide. POLYM ENG SCI 2004. [DOI: 10.1002/pen.10849] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Kint DPR, Martínez De Ilarduya A, Muñoz-Guerra S. Poly(ethylene terephthalate) copolymers containing nitroterephthalic units. II. Crystallization and conformational studies. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/polb.10338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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7
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He X, Ellison MS, Paradkar RP. Spinnability and physical properties ofin situ composite fibers based on thermotropic liquid crystalline polymer. J Appl Polym Sci 2002. [DOI: 10.1002/app.10814] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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8
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Murata K, Kuroki S, Kimura H, Ando I. A study of conformational stability of poly(L-alanine), poly(L-valine), and poly(L-alanine)/poly(L-valine) blends in the solid state by (13)C cross-polarization/magic angle spinning NMR. Biopolymers 2002; 64:26-33. [PMID: 11948439 DOI: 10.1002/bip.10124] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
13C cross-polarization/magic angle spinning (CP/MAS) NMR and (1)H T(1rho) experiments of poly(L-alanine) (PLA), poly(L-valine) (PLV), and PLA/PLV blends have been carried out in order to elucidate the conformational stability of the polypeptides in the solid state. These were prepared by adding a trifluoroacetic acid (TFA) solution of the polymer with a 2.0 wt/wt % of sulfuric acid (H(2)SO(4)) to alkaline water. From these experimental results, it is clarified that the conformations of PLA and PLV in their blends are strongly influenced by intermolecular hydrogen-bonding interactions that cause their miscibility at the molecular level.
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Affiliation(s)
- Katsuyoshi Murata
- Department of Chemistry and Materials Science, International Research Center of Macromolecular Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, Japan
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9
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Zhou C, Ma J, Pan L, Liang B. Transesterification kinetics in the reactive blends of liquid crystalline copolyesters and poly(ethylene terephthalate). Eur Polym J 2002. [DOI: 10.1016/s0014-3057(01)00261-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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A study of the conformational stability of poly(l-alanine), poly(d-alanine), poly(l-isoleucine), polyglycine and poly(l-valine) and their polypeptide blends in the solid-state by 13C CP/MAS NMR. POLYMER 2002. [DOI: 10.1016/s0032-3861(02)00616-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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12
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Kint DPR, De Ilarduya AM, Muñoz-Guerra S. Poly(ethylene terephthalate) copolymers containing 5-nitroisophthalic units. II. Crystallization studies. ACTA ACUST UNITED AC 2001. [DOI: 10.1002/polb.1128] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Lin RH, Woo E, Chiang JC. A solid-state 13C NMR study on phase heterogeneity in the miscible blend of amorphous poly(benzyl methacrylate) with semicrystalline poly(ethylene oxide). POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00671-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Lee H, Jung H, Han M, Lee C, Kim W. Compatibility studies of blends of a thermotropic liquid crystalline polymer and flexible chain polymers by application of Flory's lattice theory. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00584-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Nakano J, Kuroki S, Ando I, Kameda T, Kurosu H, Ozaki T, Shoji A. A study of conformational stability of polyglycine and poly(L-alanine), and polyglycine/poly(L-alanine) blends in the solid state by (13)C cross-polarization/magic angle spinning NMR. Biopolymers 2000; 54:81-8. [PMID: 10861369 DOI: 10.1002/1097-0282(200008)54:2<81::aid-bip1>3.0.co;2-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
13C Cross-Polarization/Magic Angle Spinning nmr and T(1rhoH) experiments of polyglycine (PG), poly(L-alanine) (PLA), and PG/PLA blends prepared from dichloroacetic acid solution have been carried out, in order to elucidate the conformational stability of these polypeptides in the solid state. From these experimental results, it was clarified that the conformations of PG and PLA in their blends are strongly influenced by intermolecular hydrogen-bonding interactions that cause their miscibility at the molecular level.
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Affiliation(s)
- J Nakano
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152, Japan
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16
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Huang JM, Chu P, Chang FC. Conformational changes and molecular motion of poly(ethylene terephthalate) annealed above glass transition temperature. POLYMER 2000. [DOI: 10.1016/s0032-3861(99)00329-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Ho JC, Lin YS, Wei KH. Synthesis and characterization of liquid crystalline multiblock copolyesters of oxybenzoate and ethylene terephthalate. POLYMER 1999. [DOI: 10.1016/s0032-3861(98)00607-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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18
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Polymer Blends and Miscibility. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0167-6881(98)80018-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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19
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Wei KH, Tyan HL. The role of partial miscibility on the properties of ternary blends of liquid crystalline copolyesters and polyetherimide. POLYMER 1998. [DOI: 10.1016/s0032-3861(97)00527-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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20
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Gentzler M, Reimer JA. H NMR Relaxation Study of Chain Motions and Solid-State Ordering in Stiff, Random Copolymers. Macromolecules 1997. [DOI: 10.1021/ma961109n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Gentzler
- Center for Advanced Materials, Lawrence Berkeley National Laboratory, and Department of Chemical Engineering, University of California at Berkeley, Berkeley, California 94720-1462
| | - Jeffrey A. Reimer
- Center for Advanced Materials, Lawrence Berkeley National Laboratory, and Department of Chemical Engineering, University of California at Berkeley, Berkeley, California 94720-1462
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21
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Guo M, Zachmann HG. Structure and Properties of Naphthalene-Containing Polyesters. 2. Miscibility Studies of Poly(ethylene naphthalene-2,6-dicarboxylate) with Poly(butylene terephthalate) by 13C CP/MAS NMR and DSC. Macromolecules 1997. [DOI: 10.1021/ma9613695] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mingming Guo
- Institute of Polymer Science, The University of Akron, Akron, Ohio 44325-3909
| | - H. G. Zachmann
- Institute of Macromolecule Chemistry and Technology, University of Hamburg, Bundesstrasse 45, D-20146 Hamburg, Germany
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22
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Wei KH, Ho JC. The Role of Transesterification on the Miscibility in Blends of Polycarbonate and Liquid Crystalline Copolyester. Macromolecules 1997. [DOI: 10.1021/ma9615260] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kung-Hwa Wei
- Institute of Material Science & Engineering, National Chiao Tung University, Hsinchu, Taiwan 30049, ROC
| | - Jia-Chong Ho
- Institute of Material Science & Engineering, National Chiao Tung University, Hsinchu, Taiwan 30049, ROC
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23
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Kung-Hwa W, Hong-Chieh J, Jia-Chong H. Miscibility in blends of liquid crystalline poly( p -oxybenzoate-co- p -phenyleneisopthalate) and polycarbonate. POLYMER 1997. [DOI: 10.1016/s0032-3861(96)00911-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Thakur KAM, Kean RT, Zupfer JM, Buehler NU, Doscotch MA, Munson EJ. Solid State 13C CP-MAS NMR Studies of the Crystallinity and Morphology of Poly(l-lactide). Macromolecules 1996. [DOI: 10.1021/ma960828z] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Phase-separated structures formed in polymer mixtures containing a thermotropic liquid crystalline copolyester as one component. POLYMER 1996. [DOI: 10.1016/0032-3861(96)85872-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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