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The effect of the shape of a mesogenic group on the structure of supramolecular aggregates based on wedge-shaped and cone-shaped dendrons. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2257-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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2
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Zlatanic A, Radojcic D, Wan X, Messman JM, Dvornic PR. Suppression of Crystallization in Polydimethylsiloxanes and Chain Branching in Their Phenyl-Containing Copolymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00474] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Jamie M. Messman
- Honeywell Federal Manufacturing & Technologies LLC, Kansas City, Missouri 64147, United States
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Modzelewski T, Wilts E, Allcock HR. Elastomeric Polyphosphazenes with Phenoxy–Cyclotriphosphazene Side Groups. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01892] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomasz Modzelewski
- Department of Chemistry, The Pennsylvania State University University
Park, Pennsylvania 16802, United States
| | - Emily Wilts
- Department of Chemistry, The Pennsylvania State University University
Park, Pennsylvania 16802, United States
| | - Harry R. Allcock
- Department of Chemistry, The Pennsylvania State University University
Park, Pennsylvania 16802, United States
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Li B, Zhang Z, Ma D, Zhai Q, Feng S, Zhang J. Preparation and kinetic analysis of room-temperature vulcanized methylethylsilicone rubbers. J Appl Polym Sci 2015. [DOI: 10.1002/app.42656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bo Li
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University; Ji'nan 250100 People's Republic of China
| | - Zhida Zhang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University; Ji'nan 250100 People's Republic of China
| | - Depeng Ma
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University; Ji'nan 250100 People's Republic of China
| | - Qianqian Zhai
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University; Ji'nan 250100 People's Republic of China
| | - Shengyu Feng
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University; Ji'nan 250100 People's Republic of China
| | - Jie Zhang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University; Ji'nan 250100 People's Republic of China
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Buzin AI, Brezesinski G, Tur DR, Papkov VS, Bakirov AV, Chvalun SN. Structural Characterization of Self-Organized Mono- and Multilayers of Poly[bis(2,2,3,3-tetrafluoropropoxy)phosphazene] at the Air/Water Interface. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00270] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander I. Buzin
- Enikolopov
Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Profsoyuznaya 70, 117393 Moscow, Russia
| | - Gerald Brezesinski
- Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg
1, 14476 Potsdam, Germany
| | - Dzidra R. Tur
- Nesmeyanov
Institute of Organo-Element Compounds, Russian Academy of Sciences, Vavilova 28, 117813 Moscow, Russia
| | - Vladimir S. Papkov
- Nesmeyanov
Institute of Organo-Element Compounds, Russian Academy of Sciences, Vavilova 28, 117813 Moscow, Russia
| | - Artem V. Bakirov
- Enikolopov
Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Profsoyuznaya 70, 117393 Moscow, Russia
- National Research
Centre “Kurchatov Institute”, Ak. Kurchatova 1, 123182 Moscow, Russia
| | - Sergei N. Chvalun
- Enikolopov
Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Profsoyuznaya 70, 117393 Moscow, Russia
- National Research
Centre “Kurchatov Institute”, Ak. Kurchatova 1, 123182 Moscow, Russia
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Ma D, Tan J, Li Y, Bian C, Wang G, Feng S. Curing characteristics, morphology, thermal stability, mechanical properties, and irradiation resistance of methylethylsilicone/methylphenylsilicone rubber blends. J Appl Polym Sci 2014. [DOI: 10.1002/app.40529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Depeng Ma
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Ji'nan 250100 People's Republic of China
| | - Jinglin Tan
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Ji'nan 250100 People's Republic of China
| | - Yuling Li
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Ji'nan 250100 People's Republic of China
| | - Chao Bian
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Ji'nan 250100 People's Republic of China
| | - Guogang Wang
- Beijing Guodian Futong Science and Technology Development Company, Limited; Beijing 100070 People's Republic of China
| | - Shengyu Feng
- Key Laboratory of Special Functional Aggregated Materials; Ministry of Education; School of Chemistry and Chemical Engineering; Shandong University; Ji'nan 250100 People's Republic of China
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Mohan Reddy GS, Narasimhaswamy T, Jayaramudu J, Sadiku ER, Raju KM, Ray SS. A New Series of Two-Ring-Based Side Chain Liquid Crystalline Polymers: Synthesis and Mesophase Characterization. Aust J Chem 2013. [DOI: 10.1071/ch13090] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A new series of side chain liquid crystalline polymers containing a core, a butamethylenoxy spacer, ester groups, and terminal alkoxy groups were synthesised and their structures were confirmed. The core was constructed with two phenyl rings and an ester linking unit. All the polymers were characterised by hot-stage polarising optical microscopy, differential scanning calorimetry, variable temperature X-ray diffraction, thermogravimetric analysis, and gel permeation chromato-graphy. The polymers were found to be liquid crystalline. The nematic and smectic A (SA) phases were observed for the homologues with short-terminal chains (C2 and C6), whereas the homologues with longer chains (C8 to C12) exhibited a smectic C phase. The thermal stability of the polymers was found to be in the range of 293 to 326°C and the molecular weights of the polymers were found to vary from 6 × 103 to 1.3 × 104.
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Ishige R, Shoji Y, Higashihara T, Ueda M, Watanabe J. Characteristic smectic structures of main-chain liquid-crystalline polyimides driven by a microphase separation between aromatic imide mesogen and a siloxane spacer. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14566e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Matukhina EV, Molodtsova YA, Pozdnyakova YA, Buzin MI, Vasil'ev VG, Katsoulis DE, Shchegolikhina OI. Tris-cis-tris-trans-dodeca[organo(dimethylorganosiloxy)]cyclododecasiloxanes {RSi(O)[OSiMe2R']}12. Self-ordering features. Inorg Chem 2011; 50:10033-40. [PMID: 21910416 DOI: 10.1021/ic2008123] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The molecular order and thermotropic transitions of tris-cis-tris-trans-dodeca- [organo(dimethylorganosiloxy)]cyclododecasiloxanes {RSi(O)[OSiMe(2)R']}(12) (R = Ph, R' = Me, CH(2)Cl, Vi; R = Me, Et, Vi, R' = Me) have been investigated using differential scanning calorimetry, thermogravimetric analysis, and X-ray scattering. The cyclododecasiloxanes with phenyl side groups (R = Ph) can form mesomorphic structures within a very wide temperature range. Compounds with R = Me and Vi are liquids and exhibit microphase separation above their glass transition temperature because of the different nature and structure of the organic R and trimethylsiloxy OSiMe(3) side groups. When the side group R = Et, a mesomorphic structure is formed in a substantially more narrow temperature region than that for cycles containing phenyl groups. Thus, the type of side group R in organocyclododecasiloxanes determines their ability for self-ordering into mesomorphic structures and the thermal stability of the mesomorphic state.
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Affiliation(s)
- Elena V Matukhina
- Department of Physics, Moscow State Pedagogical University, Malaya Pirogovskaya St. 1, Moscow 119882, Russia
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Molenberg A, Siffrin S, Möller M, Boileau S, Teyssié D. Well defined columnar liquid crystalline polydiethylsiloxane. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19961020125] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Zheng Y, Zhang W, Gupta M, Kankanala S, Marks C, Carpenter E, Carroll K, Wynne KJ. Poly(bis-2,2,2-trifluoroethoxymethyl oxetane): Multiple crystal phases, crystallization-induced surface topological complexity and enhanced hydrophobicity. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.21991] [Citation(s) in RCA: 7] [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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Defaux M, Vidal L, Möller M, Gearba RI, DiMasi E, Ivanov DA. Thin Films of a Main-Chain Columnar Liquid Crystal: Studies of Structure, Phase Transitions, and Alignment. Macromolecules 2009. [DOI: 10.1021/ma802666a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthieu Defaux
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS LRC 7228, Jean Starcky, 15, F-68057 Mulhouse, France; Deutsches Wollforschungsinstitut an der RWTH Aachen e.V., Pauwelsstr. 8, 52074 Aachen, Germany; Center for Functional Nanomaterials, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973; and National Synchrotron Light Source, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973
| | - Loïc Vidal
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS LRC 7228, Jean Starcky, 15, F-68057 Mulhouse, France; Deutsches Wollforschungsinstitut an der RWTH Aachen e.V., Pauwelsstr. 8, 52074 Aachen, Germany; Center for Functional Nanomaterials, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973; and National Synchrotron Light Source, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973
| | - Martin Möller
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS LRC 7228, Jean Starcky, 15, F-68057 Mulhouse, France; Deutsches Wollforschungsinstitut an der RWTH Aachen e.V., Pauwelsstr. 8, 52074 Aachen, Germany; Center for Functional Nanomaterials, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973; and National Synchrotron Light Source, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973
| | - Raluca I. Gearba
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS LRC 7228, Jean Starcky, 15, F-68057 Mulhouse, France; Deutsches Wollforschungsinstitut an der RWTH Aachen e.V., Pauwelsstr. 8, 52074 Aachen, Germany; Center for Functional Nanomaterials, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973; and National Synchrotron Light Source, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973
| | - Elaine DiMasi
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS LRC 7228, Jean Starcky, 15, F-68057 Mulhouse, France; Deutsches Wollforschungsinstitut an der RWTH Aachen e.V., Pauwelsstr. 8, 52074 Aachen, Germany; Center for Functional Nanomaterials, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973; and National Synchrotron Light Source, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973
| | - Dimitri A. Ivanov
- Institut de Sciences des Matériaux de Mulhouse-IS2M, CNRS LRC 7228, Jean Starcky, 15, F-68057 Mulhouse, France; Deutsches Wollforschungsinstitut an der RWTH Aachen e.V., Pauwelsstr. 8, 52074 Aachen, Germany; Center for Functional Nanomaterials, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973; and National Synchrotron Light Source, Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973
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Evmenenko G, Kewalramani S, Dutta P. Influence of molecular rigidity on interfacial ordering in diphenyl-based polysiloxane films. POLYMER 2007. [DOI: 10.1016/j.polymer.2007.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Evmenenko G, Mo H, Kewalramani S, Dutta P. X-ray reflectivity study of ultrathin liquid films of diphenylsiloxane-dimethylsiloxane copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:6245-8. [PMID: 16800682 DOI: 10.1021/la060522d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Using X-ray reflectivity, we observe drastic differences in the interfacial structure and molecular ordering of diphenylsiloxane-dimethylsiloxane copolymer thin films deposited on hydroxylated versus H-terminated (etched) silicon wafers. We find that substrate type and comonomer ratio determine the conformational arrangements in these liquid films. High-energy bonding between the substrate and the molecules and an increase in rigidity of the molecules due to replacement of methyl groups by phenyl groups leads to a specific molecular ordering at the liquid/solid interface and pronounced density oscillations in this region. The observed structural reorganizations are explained by the interplay and the established balance between the chain flexibility and the polymer-substrate interactions.
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Affiliation(s)
- Guennadi Evmenenko
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208-3112, USA.
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Gearba RI, Anokhin DV, Bondar AI, Godovsky YK, Papkov VS, Makarova NN, Magonov SN, Bras W, Koch MHJ, Masin F, Goderis B, Ivanov DA. Mesomorphism, Polymorphism, and Semicrystalline Morphology of Poly(Di-n-propylsiloxane). Macromolecules 2006. [DOI: 10.1021/ma0513315] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raluca I. Gearba
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Denis V. Anokhin
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Alexander I. Bondar
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Yuli K. Godovsky
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Vladimir S. Papkov
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Natalia N. Makarova
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Sergei N. Magonov
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Wim Bras
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Michel H. J. Koch
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Francis Masin
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Bart Goderis
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
| | - Dimitri A. Ivanov
- Laboratoire de Physique des Polymères, CP-223, Université Libre de Bruxelles, Bld. du Triomphe, B-1050, Brussels, Belgium, Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia, Veeco Metrology Group, 112 Robin Hill Road, Santa Barbara, California 93117, Netherlands Organization for Scientific Research (NWO), DUBBLE-CRG/ESRF, B.P. 220, F-38043 Grenoble Cedex,
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Kimura H, Kanesaka S, Kuroki S, Ando I, Asano A, Kurosu H. Structural characterization of poly(diethylsiloxane) in the crystalline, liquid crystalline and isotropic phases by solid-state 17O NMR spectroscopy and ab initio MO calculations. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2005; 43:209-216. [PMID: 15593344 DOI: 10.1002/mrc.1527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The structure of poly(diethylsiloxane) (PDES) has been characterized using solid-state NMR of (17)O. The sample studied had a weight-average molecular weight of 2.45 x 10(5). The sample was prepared by utilizing the cationic ring-opening polymerization of (17)O-enriched hexacyclotrisiloxane. Solid-state NMR of (17)O-enriched PDES was measured on the low-temperature beta(1) phase, the high-temperature beta(2) phase, the two-phase system consisting of the liquid crystal and isotropic liquid phase and the isotropic phase. From these data, the molecular structure and dynamics of PDES in the various phases were characterized via the chemical shifts of (17)O, and electric field gradient parameters were determined from NMR and ab initio molecular orbital (MO) calculations. In addition to the solid-state NMR of (1)H, (13)C and (29)Si previously reported on these samples, knowledge of the dynamic behavior of PDES as inferred from the NMR of (17)O in the present study was enhanced significantly. Further, the potential of combining the experimental NMR of (17)O with ab initio MO calculations to characterize the dynamics of polymers containing oxygen is demonstrated.
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Affiliation(s)
- Hideaki Kimura
- Department of Chemistry and Materials Science, International Research Center of Macromolecular Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Li L, de Jeu WH. Flow-induced mesophases in crystallizable polymers. ADVANCES IN POLYMER SCIENCE 2005. [DOI: 10.1007/b107175] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Godovsky YK, Brezesinski G, Ruiz-Garcia J, Möhwald H, Jensen TR, Kjaer K, Makarova NN. Stepwise Collapse of Cyclolinear Polysiloxane Langmuir Monolayers Studied by Brewster Angle Microscopy and Grazing Incidence X-ray Diffraction. Macromolecules 2004. [DOI: 10.1021/ma049631u] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu. K. Godovsky
- Karpov Institute of Physical Chemistry, Vorontsovo Pole str.10, Moscow 105064, Russia, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14476 Golm/Potsdam, Germany, Condensed Matter Physics and Chemistry Department and Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark, Interdisciplinary Nanoscience Center, Department of Chemistry, University of Aarhus, DK-8000 Århus C, Denmark, and Nesmeyanov Institute of Elementoorganic Compounds, Russian Academy of
| | - G. Brezesinski
- Karpov Institute of Physical Chemistry, Vorontsovo Pole str.10, Moscow 105064, Russia, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14476 Golm/Potsdam, Germany, Condensed Matter Physics and Chemistry Department and Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark, Interdisciplinary Nanoscience Center, Department of Chemistry, University of Aarhus, DK-8000 Århus C, Denmark, and Nesmeyanov Institute of Elementoorganic Compounds, Russian Academy of
| | - J. Ruiz-Garcia
- Karpov Institute of Physical Chemistry, Vorontsovo Pole str.10, Moscow 105064, Russia, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14476 Golm/Potsdam, Germany, Condensed Matter Physics and Chemistry Department and Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark, Interdisciplinary Nanoscience Center, Department of Chemistry, University of Aarhus, DK-8000 Århus C, Denmark, and Nesmeyanov Institute of Elementoorganic Compounds, Russian Academy of
| | - H. Möhwald
- Karpov Institute of Physical Chemistry, Vorontsovo Pole str.10, Moscow 105064, Russia, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14476 Golm/Potsdam, Germany, Condensed Matter Physics and Chemistry Department and Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark, Interdisciplinary Nanoscience Center, Department of Chemistry, University of Aarhus, DK-8000 Århus C, Denmark, and Nesmeyanov Institute of Elementoorganic Compounds, Russian Academy of
| | - T. R. Jensen
- Karpov Institute of Physical Chemistry, Vorontsovo Pole str.10, Moscow 105064, Russia, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14476 Golm/Potsdam, Germany, Condensed Matter Physics and Chemistry Department and Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark, Interdisciplinary Nanoscience Center, Department of Chemistry, University of Aarhus, DK-8000 Århus C, Denmark, and Nesmeyanov Institute of Elementoorganic Compounds, Russian Academy of
| | - K. Kjaer
- Karpov Institute of Physical Chemistry, Vorontsovo Pole str.10, Moscow 105064, Russia, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14476 Golm/Potsdam, Germany, Condensed Matter Physics and Chemistry Department and Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark, Interdisciplinary Nanoscience Center, Department of Chemistry, University of Aarhus, DK-8000 Århus C, Denmark, and Nesmeyanov Institute of Elementoorganic Compounds, Russian Academy of
| | - N. N. Makarova
- Karpov Institute of Physical Chemistry, Vorontsovo Pole str.10, Moscow 105064, Russia, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14476 Golm/Potsdam, Germany, Condensed Matter Physics and Chemistry Department and Materials Research Department, Risø National Laboratory, DK-4000 Roskilde, Denmark, Interdisciplinary Nanoscience Center, Department of Chemistry, University of Aarhus, DK-8000 Århus C, Denmark, and Nesmeyanov Institute of Elementoorganic Compounds, Russian Academy of
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22
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Allegra G, Meille SV. Mesomorphic Phases of Flexible Polymers: The Self-Compacting Chain Model. Macromolecules 2004. [DOI: 10.1021/ma0499021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giuseppe Allegra
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
| | - Stefano Valdo Meille
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
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Jaffe M, Pai V, Ophir Z, Wu J, Kohn J. Process-structure-property relationships of erodable polymeric biomaterials, I: Poly(desaminotyrosyl arylates). POLYM ADVAN TECHNOL 2003. [DOI: 10.1002/pat.278] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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24
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Hamieh T, Schultz J. New approach to characterise physicochemical properties of solid substrates by inverse gas chromatography at infinite dilution. II. Study of the transition temperatures of poly(methyl methacrylate) at various tacticities and of poly(methyl methacrylate) adsorbed on alumina and silica. J Chromatogr A 2002; 969:27-36. [PMID: 12385374 DOI: 10.1016/s0021-9673(02)00358-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The determination of the temperature transitions in polymers and more particularly when polymers are adsorbed on oxides is very important in many industrial processes. In this second part, we used inverse gas chromatography (IGC) at infinite dilution to determine the second order transition temperatures of poly(methyl methacrylate) (PMMA) adsorbed (or not) on alumina or on silica. Three types of PMMA were used: atactic (a), syndiotactic (syndio) and isotactic (iso). The IGC technique allowed to obtain the net retention volume Vn and the dispersive component of the surface energy gamma(s)d for various theoretical models of molecules, using the results of Part I. By plotting RT ln Vn as a function of (1/T) or gamma(s)d as a function of the temperature T, we proved the presence of three particular temperatures that correspond respectively to the transition temperature relative to beta-relaxation (Tbeta), the glass transition temperature (Tg), and the liquid-liquid transition temperature or order-disorder transition (T1.1). Results obtained in this part allowed us to show the effect of the tacticity of PMMA and the recovery fraction of polymer adsorbed on alumina or silica on the transition temperatures.
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Affiliation(s)
- Tayssir Hamieh
- Département de Chimie, Faculté des Sciences, Université Libanaise, Mont-Liban, Beyrouth, Lebanon.
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25
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Papkov VS, Buzin MI, Gerasimov MV, Obolonkova ES. Thermoreversible Gelation in Poly(diphenylsiloxane)/Diphenyl Ether Systems Exhibiting Mesophase Behavior. Macromolecules 2002. [DOI: 10.1021/ma0109673] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- V. S. Papkov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119991 Moscow, Russia
| | - M. I. Buzin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119991 Moscow, Russia
| | - M. V. Gerasimov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119991 Moscow, Russia
| | - E. S. Obolonkova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov str., 28, 119991 Moscow, Russia
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Godovsky YK, Papkov VS, Magonov SN. Atomic Force Microscopy Visualization of Morphology Changes Resulting from the Phase Transitions in Poly(di-n-alkylsiloxane)s: Poly(diethylsiloxane). Macromolecules 2001. [DOI: 10.1021/ma000845v] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuli K. Godovsky
- Karpov Institute of Physical Chemistry, 10 Vorontsovo Pole, 103064 Moscow, Russia
| | - Vladimir S. Papkov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 117813 Moscow, Russia
| | - Sergei N. Magonov
- Digital Instruments/Veeco Metrology Group, 112 Robin Hill Rd., Santa Barbara, California 93117
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28
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Inomata K, Yamamoto K, Nose T. An X-Ray Diffraction Study on Crystalline and Mesomorphic Structures of Poly(diethylsiloxane). Polym J 2000. [DOI: 10.1295/polymj.32.1044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Hedden RC, Saxena H, Cohen C. Mechanical Properties and Swelling Behavior of End-Linked Poly(diethylsiloxane) Networks. Macromolecules 2000. [DOI: 10.1021/ma001419c] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ronald C. Hedden
- School of Chemical Engineering, Olin Hall, Cornell University, Ithaca, New York 14853
| | - Himanshu Saxena
- School of Chemical Engineering, Olin Hall, Cornell University, Ithaca, New York 14853
| | - Claude Cohen
- School of Chemical Engineering, Olin Hall, Cornell University, Ithaca, New York 14853
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Buzin AI, Godovsky YK, Makarova NN, Fang J, Wang X, Knobler CM. Stepwise Collapse of Monolayers of Cyclolinear Poly(organosiloxane)s at the Air/Water Interface: A Brewster-Angle Microscopy and Scanning Force Microscopy Study. J Phys Chem B 1999. [DOI: 10.1021/jp992708+] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Affiliation(s)
- Aart Molenberg
- University of Ulm, Organische Chemie III/Makromolekulare Chemie, 89069 Ulm, Germany
| | - Martin Möller
- University of Ulm, Organische Chemie III/Makromolekulare Chemie, 89069 Ulm, Germany
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34
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35
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Magonov S, Elings V, Papkov V. AFM study of thermotropic structural transitions in poly(diethylsiloxane). POLYMER 1997. [DOI: 10.1016/s0032-3861(96)00513-7] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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36
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Grinberg F, Kimmich R, Möller M, Molenberg A. Order fluctuations in the mesophase of polydiethylsiloxane as studied by the dipolar‐correlation effect on the stimulated echo. J Chem Phys 1996. [DOI: 10.1063/1.472774] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Molenberg A, Sheiko S, Möller M. A Block Copolymer from Polystyrene and Columnar Liquid-Crystalline Poly(diethylsiloxane). Macromolecules 1996. [DOI: 10.1021/ma9515588] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aart Molenberg
- University of Ulm, Organische Chemie III/Makromolekulare Chemie, D-89069 Ulm, Germany
| | - Sergei Sheiko
- University of Ulm, Organische Chemie III/Makromolekulare Chemie, D-89069 Ulm, Germany
| | - Martin Möller
- University of Ulm, Organische Chemie III/Makromolekulare Chemie, D-89069 Ulm, Germany
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39
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Structural transformations in poly(di-n-alkylsiloxane)s with alkyl side groups containing 7 to 10 carbon atoms. POLYMER 1995. [DOI: 10.1016/0032-3861(95)93934-e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Białecka-Florjańczyk E, Ganicz T, Pluta M, Stañczyk W. Comb-like polycarbosilanes-routes to a new group of liquid crystal polymers. J Organomet Chem 1993. [DOI: 10.1016/0022-328x(93)83084-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Godovsky YK, Valetskaya LA. Mesophase elastomers: Stress-induced mesophase formation in poly(diethylsiloxane) networks and their thermomechanical behaviour. Polym Bull (Berl) 1991. [DOI: 10.1007/bf00296034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Ungar G, Feijoo JL. Simultaneous X-Ray Diffraction and Differential Scanning Calorimetry (XDDSC) in Studies of Molecular and Liquid Crystals. ACTA ACUST UNITED AC 1990. [DOI: 10.1080/00268949008042209] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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