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2
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Çatıker E, Öztürk T, Atakay M, Salih B. Synthesis and characterization of the ABA-type poly(ester-ether-ester) block copolymers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2020.1745080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Efkan Çatıker
- Department of Chemistry, Ordu University, Ordu, Turkey
| | - Temel Öztürk
- Department of Chemistry, Giresun University, Giresun, Turkey
| | - Mehmet Atakay
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Bekir Salih
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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5
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Kumar S, Shah PN, Ahn S, Hwang WS, Sung IK, Shah SR, Murthy CN, Chang T, Lee JS. Mechanistic Pathway for the Formation of Radial Polystyrenes Using Diacyl Chloride. Macromolecules 2012. [DOI: 10.1021/ma3002142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Santosh Kumar
- Department of Nanobio Materials and
Electronics, School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST),
123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju, 500-712, Korea
| | - Priyank N. Shah
- Department of Nanobio Materials and
Electronics, School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST),
123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju, 500-712, Korea
| | - Seonyoung Ahn
- Department
of Chemistry and Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, 790784, Korea
| | - Woon Sung Hwang
- R&D Center, Kolon Industries, Inc., Chemical Organization 294 Gajwa-dong, Seo-gu, Incheon-si 404-815, Korea
| | - Ik Kyung Sung
- R&D Center, Kolon Industries, Inc., Chemical Organization 294 Gajwa-dong, Seo-gu, Incheon-si 404-815, Korea
| | | | | | - Taihyun Chang
- Department
of Chemistry and Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, 790784, Korea
| | - Jae-Suk Lee
- Department of Nanobio Materials and
Electronics, School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST),
123 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju, 500-712, Korea
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6
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Barrère C, Mazarin M, Giordanengo R, Phan TNT, Thévand A, Viel S, Charles L. Molecular Weight Determination of Block Copolymers by Pulsed Gradient Spin Echo NMR. Anal Chem 2009; 81:8054-60. [DOI: 10.1021/ac9018654] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Caroline Barrère
- Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, and Laboratoire Chimie Provence, Chimie Radicalaire, Organique et Polymères de Spécialité, Universités Aix-Marseille I, II & III - CNRS, UMR 6264, F-13397 Marseille Cedex 20, France, and Institut des Sciences Moléculaires de Marseille, Chimiométrie et Spectrométries, Aix-Marseille Université - CNRS, UMR 6263, F-13397 Marseille, France
| | - Michaël Mazarin
- Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, and Laboratoire Chimie Provence, Chimie Radicalaire, Organique et Polymères de Spécialité, Universités Aix-Marseille I, II & III - CNRS, UMR 6264, F-13397 Marseille Cedex 20, France, and Institut des Sciences Moléculaires de Marseille, Chimiométrie et Spectrométries, Aix-Marseille Université - CNRS, UMR 6263, F-13397 Marseille, France
| | - Rémi Giordanengo
- Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, and Laboratoire Chimie Provence, Chimie Radicalaire, Organique et Polymères de Spécialité, Universités Aix-Marseille I, II & III - CNRS, UMR 6264, F-13397 Marseille Cedex 20, France, and Institut des Sciences Moléculaires de Marseille, Chimiométrie et Spectrométries, Aix-Marseille Université - CNRS, UMR 6263, F-13397 Marseille, France
| | - Trang N. T. Phan
- Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, and Laboratoire Chimie Provence, Chimie Radicalaire, Organique et Polymères de Spécialité, Universités Aix-Marseille I, II & III - CNRS, UMR 6264, F-13397 Marseille Cedex 20, France, and Institut des Sciences Moléculaires de Marseille, Chimiométrie et Spectrométries, Aix-Marseille Université - CNRS, UMR 6263, F-13397 Marseille, France
| | - André Thévand
- Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, and Laboratoire Chimie Provence, Chimie Radicalaire, Organique et Polymères de Spécialité, Universités Aix-Marseille I, II & III - CNRS, UMR 6264, F-13397 Marseille Cedex 20, France, and Institut des Sciences Moléculaires de Marseille, Chimiométrie et Spectrométries, Aix-Marseille Université - CNRS, UMR 6263, F-13397 Marseille, France
| | - Stéphane Viel
- Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, and Laboratoire Chimie Provence, Chimie Radicalaire, Organique et Polymères de Spécialité, Universités Aix-Marseille I, II & III - CNRS, UMR 6264, F-13397 Marseille Cedex 20, France, and Institut des Sciences Moléculaires de Marseille, Chimiométrie et Spectrométries, Aix-Marseille Université - CNRS, UMR 6263, F-13397 Marseille, France
| | - Laurence Charles
- Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, and Laboratoire Chimie Provence, Chimie Radicalaire, Organique et Polymères de Spécialité, Universités Aix-Marseille I, II & III - CNRS, UMR 6264, F-13397 Marseille Cedex 20, France, and Institut des Sciences Moléculaires de Marseille, Chimiométrie et Spectrométries, Aix-Marseille Université - CNRS, UMR 6263, F-13397 Marseille, France
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8
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Sanabria-DeLong N, Agrawal SK, Bhatia SR, Tew GN. Impact of Synthetic Technique on PLA−PEO−PLA Physical Hydrogel Properties. Macromolecules 2007. [DOI: 10.1021/ma071243f] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naomi Sanabria-DeLong
- Department of Polymer Science & Engineering, University of Massachusetts-Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, and Department of Chemical Engineering, University of Massachusetts-Amherst, 686 North Pleasant Street, Amherst, Massachusetts 01003
| | - Sarvesh K. Agrawal
- Department of Polymer Science & Engineering, University of Massachusetts-Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, and Department of Chemical Engineering, University of Massachusetts-Amherst, 686 North Pleasant Street, Amherst, Massachusetts 01003
| | - Surita R. Bhatia
- Department of Polymer Science & Engineering, University of Massachusetts-Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, and Department of Chemical Engineering, University of Massachusetts-Amherst, 686 North Pleasant Street, Amherst, Massachusetts 01003
| | - Gregory N. Tew
- Department of Polymer Science & Engineering, University of Massachusetts-Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, and Department of Chemical Engineering, University of Massachusetts-Amherst, 686 North Pleasant Street, Amherst, Massachusetts 01003
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Im K, Park S, Cho D, Chang T, Lee K, Choi N. HPLC and MALDI-TOF MS Analysis of Highly Branched Polystyrene: Resolution Enhancement by Branching. Anal Chem 2004; 76:2638-42. [PMID: 15117209 DOI: 10.1021/ac035506p] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Temperature gradient interaction chromatography (TGIC) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) were applied for the characterization of highly branched polystyrenes (PS) prepared by linking living polystyryl anions using 4-chlorodimethylsilylstyrene. Reversed-phase (RP)-TGIC showed an unexpectedly high resolution according to the number of branches despite significant overlap of the molecular weight as confirmed by MALDI-TOF MS. The enhancement of the resolution is ascribed to the contribution of the nonpolar groups in the branched PS: the dimethylsilyl groups in the branching unit as well as the sec-butyl initiator groups. As the number of branches increases, the number of nonpolar groups increases, which in turn increases the RP-TGIC retention synergistically with increasing molecular weight. In contrast, a poorer resolution was found in normal-phase-TGIC, in which the nonpolar groups reduce the retention. The resolution in RP-TGIC appears superior to that of liquid chromatography at the chromatographic critical condition (LCCC) of PS. It is seemingly due to the synergistic contribution of the incremental PS molecular weight to the functionality in the branched PS in RP-TGIC while only the functionality contributes to the separation in LCCC. This type of resolution enhancement could be utilized efficiently for the analysis of highly branched polymers such as dendrimers or hyperbranched polymers.
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Affiliation(s)
- Kyuhyun Im
- Department of Chemistry and Center for Integrated Molecular Systems, Pohang University of Science and Technology, Pohang, 790-784, Korea
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