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Chen L, Huang J, Wang X, Lu C, Zhang H, Wang G. Synthesis and characterization of novel dumbbell shaped copolymers poly(ethylene oxide)x-b-polystyrene-b-poly(ethylene oxide)x with tunable side arms by combination of efficient thiol-ene addition reaction with living polymerization mechanism. RSC Adv 2015. [DOI: 10.1039/c4ra16580b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
A series of well-defined dumbbell shaped copolymers consisting of PEO and PS segments were successfully synthesized by LAP and ROP mechanisms and the efficient thiol-ene addition reaction. This versatile synthetic route might be used to synthesize other similar copolymers.
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Affiliation(s)
- Lingdi Chen
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Jian Huang
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Xuepu Wang
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Chengjiao Lu
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Hongdong Zhang
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
| | - Guowei Wang
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- China
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2
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Zinn T, Willner L, Lund R, Pipich V, Appavou MS, Richter D. Surfactant or block copolymer micelles? Structural properties of a series of well-defined n-alkyl-PEO micelles in water studied by SANS. SOFT MATTER 2014; 10:5212-20. [PMID: 24916456 DOI: 10.1039/c4sm00625a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Here we present an extensive small-angle neutron scattering (SANS) structural characterization of micelles formed by poly(ethylene oxide)-mono-n-alkyl ethers (Cn-PEOx) in dilute aqueous solution. Chemically, Cn-PEOx can be considered as a hybrid between a low-molecular weight surfactant and an amphiphilic block copolymer. The present system, prepared through anionic polymerization techniques, is better defined than other commercially available polymers and allows a very precise and systematic testing of the theoretical predictions from thermodynamical models. The equilibrium micellar properties were elaborated by systematically varying the n-alkyl chain length (n) at constant PEO molecular weight or increasing the soluble block size (x), respectively. The structure was reminiscent of typical spherical star-like micelles i.e. a constant core density profile, ∼r(0), and a diffuse corona density profile, ∼r(-4/3). Through a careful quantitative analysis of the scattering data, it is found that the aggregation number, Nagg initially rapidly decreases with increasing PEO length until it becomes independent at higher PEO molecular weight as expected for star-like micelles. On the other hand, the dependency on the n-alkyl length is significantly stronger than that expected from the theories for star-like block copolymer micelles, Nagg ∼ n(2) similar to what is expected for surfactant micelles. Hence the observed aggregation behavior suggests that the Cn-PEOx micelles exhibit a behavior that can be considered as a hybrid between low-molecular weight surfactant micelles and diblock copolymer micelles.
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Affiliation(s)
- Thomas Zinn
- Jülich Centre for Neutron Science JCNS and Institute for Complex Systems ICS, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.
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Bouchet R, Phan TNT, Beaudoin E, Devaux D, Davidson P, Bertin D, Denoyel R. Charge Transport in Nanostructured PS–PEO–PS Triblock Copolymer Electrolytes. Macromolecules 2014. [DOI: 10.1021/ma500420w] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Bouchet
- Laboratoire
d’Electrochimie et de Physico-chimie des Matériaux et
des Interfaces (LEPMI) UMR CNRS 5279, Grenoble Universités, 1130
rue de la piscine, 38402 St. Martin d’Hères, France
| | - T. N. T. Phan
- Institut
de Chimie Radicalaire - UMR 7273, Chimie Radicalaire Organique et
Polymères de Spécialité, Aix-Marseille Université, Campus Saint Jérôme, Case 542, 13397 Marseille, Cedex 20, France
| | - E. Beaudoin
- Institut
de Chimie Radicalaire - UMR 7273, Chimie Radicalaire Organique et
Polymères de Spécialité, Aix-Marseille Université, Campus Saint Jérôme, Case 542, 13397 Marseille, Cedex 20, France
- Laboratoire
de Physique des Solides, UMR 8502 CNRS, Université Paris-Sud, Bâtiment 510, 91405 Orsay, Cedex, France
| | - D. Devaux
- Institut
de Chimie Radicalaire - UMR 7273, Chimie Radicalaire Organique et
Polymères de Spécialité, Aix-Marseille Université, Campus Saint Jérôme, Case 542, 13397 Marseille, Cedex 20, France
- MADIREL
- UMR 7246, Matériaux divisés, interfaces, réactivité,
électrochimie, Aix-Marseille Université, Campus saint Jérôme,
Bât. MADIREL, 13397 Marseille, Cedex 20, France
| | - P. Davidson
- Laboratoire
de Physique des Solides, UMR 8502 CNRS, Université Paris-Sud, Bâtiment 510, 91405 Orsay, Cedex, France
| | - D. Bertin
- Institut
de Chimie Radicalaire - UMR 7273, Chimie Radicalaire Organique et
Polymères de Spécialité, Aix-Marseille Université, Campus Saint Jérôme, Case 542, 13397 Marseille, Cedex 20, France
| | - R. Denoyel
- MADIREL
- UMR 7246, Matériaux divisés, interfaces, réactivité,
électrochimie, Aix-Marseille Université, Campus saint Jérôme,
Bât. MADIREL, 13397 Marseille, Cedex 20, France
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Beaudoin E, Phan TNT, Robinet M, Denoyel R, Davidson P, Bertin D, Bouchet R. Effect of interfaces on the melting of PEO confined in triblock PS-b-PEO-b-PS copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10874-10880. [PMID: 23865710 DOI: 10.1021/la401889h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Block copolymers form nanostructures that have interesting physical properties because they combine, for a single compound, the complementary features brought by each block. However, in order to fully exploit these properties, the physical state of each kind of domain must be precisely controlled. In this work, triblock PS-b-PEO-b-PS copolymers consisting of a central poly(ethylene oxide) (PEO) block covalently bonded to polystyrene (PS) blocks were synthesized by Atom Transfer Radical Polymerization. Their morphology was investigated by X-ray scattering and TEM experiments whereas their thermodynamic behavior was characterized by DSC. A strong decrease of both the melting temperature and the degree of crystallinity of PEO, due to its confinement between the PS domains, was observed and analyzed with a modified Gibbs-Thomson equation, following the approaches used for fluids confined in porous media. The existence of an amorphous bound layer, a few nanometers thick, at the PEO/PS interface, that does not undergo any phase transition in the temperature range investigated, accounts for both the melting temperature depression and the decrease of crystallinity upon confinement. This interfacial layer may significantly affect the mechanical and transport properties of these block copolymers that find applications as solid polymer electrolytes in batteries for example. Moreover, the value obtained for the solid PEO/liquid PEO surface tension is lower than those previously published but is thermodynamically consistent with the surface tensions of polymers at the solid/vapor and liquid/vapor interfaces.
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Affiliation(s)
- E Beaudoin
- Aix-Marseille Université, Institut de Chimie Radicalaire-UMR 7273, Campus Saint Jérôme, Case 542, 13397 Marseille Cedex 20, France
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Mathias EV, Aponte J, Kornfield JA, Ba Y. Properties of small molecular drug loading and diffusion in a fluorinated PEG hydrogel studied by H molecular diffusion NMR and F spin diffusion NMR. Colloid Polym Sci 2010; 288:1655-1663. [PMID: 21170115 PMCID: PMC2982959 DOI: 10.1007/s00396-010-2304-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 09/19/2010] [Accepted: 09/20/2010] [Indexed: 11/30/2022]
Abstract
R(f)-PEG (fluoroalkyl double-ended poly(ethylene glycol)) hydrogel is potentially useful as a drug delivery depot due to its advanced properties of sol-gel two-phase coexistence and low surface erosion. In this study, (1)H molecular diffusion nuclear magnetic resonance (NMR) and (19)F spin diffusion NMR were used to probe the drug loading and diffusion properties of the R(f)-PEG hydrogel for small anticancer drugs, 5-fluorouracil (FU) and its hydrophobic analog, 1,3-dimethyl-5-fluorouracil (DMFU). It was found that FU has a larger apparent diffusion coefficient than that of DMFU, and the diffusion of the latter was more hindered. The result of (19)F spin diffusion NMR for the corresponding freeze-dried samples indicates that a larger portion of DMFU resided in the R(f) core/IPDU intermediate-layer region (where IPDU refers to isophorone diurethane, as a linker to interconnect the R(f) group and the PEG chain) than that of FU while the opposite is true in the PEG-water phase. To understand the experimental data, a diffusion model was proposed to include: (1) hindered diffusion of the drug molecules in the R(f) core/IPDU-intermediate-layer region; (2) relatively free diffusion of the drug molecules in the PEG-water phase (or region); and (3) diffusive exchange of the probe molecules between the above two regions. This study also shows that molecular diffusion NMR combined with spin diffusion NMR is useful in studying the drug loading and diffusion properties in hydrogels for the purpose of drug delivery applications.
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Affiliation(s)
- Errol V. Mathias
- Department of Chemistry and Biochemistry, California State University Los Angeles, Los Angeles, CA 90032 USA
| | - Julia Aponte
- Department of Chemistry and Biochemistry, California State University Los Angeles, Los Angeles, CA 90032 USA
| | - Julia A. Kornfield
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125 USA
| | - Yong Ba
- Department of Chemistry and Biochemistry, California State University Los Angeles, Los Angeles, CA 90032 USA
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Garg P, Lohakare P, Mela P, Möller M, Blümich B, Adams A. Morphology of Novel PEAs Containing Two Consecutive Amide Bonds Randomly Distributed Along the Polyester Backbone. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Bonk FA, Caldarelli S, Phan T, Bertin D, Deazevedo ER, Mantovani GL, Bonagamba TJ, Plivelic TS, Torriani IL. Investigation by combined solid-state NMR and SAXS methods of the morphology and domain size in polystyrene-b-
polyethylene oxide-b-
polystyrene triblock copolymers. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/polb.21843] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Singla S, Beckham HW. Miscible Blends of Cyclic Poly(oxyethylene) in Linear Polystyrene. Macromolecules 2008. [DOI: 10.1021/ma800327c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Swati Singla
- School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0295
| | - Haskell W. Beckham
- School of Polymer, Textile and Fiber Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0295
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Meurer B, Weill G. Measurement of Spin Diffusion Coefficients in Glassy Polymers: Failure of a Simple Scaling Law. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200700297] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Hucher C, Eustache RP, Beaume F, Tekely P. Motional Heterogeneity in Poly(ether-block-amide) Copolymers As Revealed by Solid-State NMR. Macromolecules 2005. [DOI: 10.1021/ma051625q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Catherine Hucher
- ARKEMA, Centre d'Etude de Recherche et Développement, 27470 Serquigny, France, and Methodologie RMN UMR CNRS 7565, Université H. Poincaré, 54506 Vandoeuvre-lès-Nancy, France
| | - René-Paul Eustache
- ARKEMA, Centre d'Etude de Recherche et Développement, 27470 Serquigny, France, and Methodologie RMN UMR CNRS 7565, Université H. Poincaré, 54506 Vandoeuvre-lès-Nancy, France
| | - François Beaume
- ARKEMA, Centre d'Etude de Recherche et Développement, 27470 Serquigny, France, and Methodologie RMN UMR CNRS 7565, Université H. Poincaré, 54506 Vandoeuvre-lès-Nancy, France
| | - Piotr Tekely
- ARKEMA, Centre d'Etude de Recherche et Développement, 27470 Serquigny, France, and Methodologie RMN UMR CNRS 7565, Université H. Poincaré, 54506 Vandoeuvre-lès-Nancy, France
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11
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Guschl PC, Otaigbe JU, Loong CK. Investigation of phase behavior during melt processing of novel inorganic-organic polymer hybrid material. POLYM ENG SCI 2004. [DOI: 10.1002/pen.20169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Buda A, Demco DE, Bertmer M, Blümich B, Reining B, Keul H, Höcker H. Domain sizes in heterogeneous polymers by spin diffusion using single-quantum and double-quantum dipolar filters. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2003; 24:39-67. [PMID: 12850256 DOI: 10.1016/s0926-2040(03)00020-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
1H spin-diffusion experiments employing a double-quantum (DQ) dipolar filter were performed for the characterization of the microdomain structure of heterogeneous samples. For this purpose the NMR spin-diffusion process was analysed based on a model morphology of three different domains with arbitrary sizes, diffusivities, and filter efficiency. General analytical solutions for z magnetization source and sink were obtained valid for a one-dimensional lamellar morphology in the full range of spin-diffusion times. These solutions of the spin-diffusion equations were used for determining the crystalline, interface, and amorphous domain sizes in polystyrene-poly(ethylene oxide) (PS-PEO) and poly(hydroxyethylmethacrylate)-poly(ethylene oxide) (PHEMA-PEO). The DQ dipolar filter has a good efficiency for PS-PEO but is only partially efficient in filtering the signal of the mobile domains in the PHEMA-PEO diblock copolymer. The domain sizes measured by the DQ filter method are compared to those obtained using the traditional dipolar filter creating z magnetization in the mobile domains.
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Affiliation(s)
- A Buda
- Institut für Technische Chemie und Makromolekulare Chemie, Rheinisch-Westfälische Technische Hochschule, Worringerweg 1, D-52056 Aachen, Germany
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Cojocariu G, Natansohn A. Solid-State NMR Investigation of Morphology in Poly(N-vinylcarbazole) Complexes with Poly(ethylene glycol) Monomethyl Ether 3,5-Dinitrobenzoate. Macromolecules 2003. [DOI: 10.1021/ma026012h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. Cojocariu
- Department of Chemistry, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - A. Natansohn
- Department of Chemistry, Queen's University, Kingston, Ontario K7L 3N6, Canada
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Werkhoven TM, Mulder FM, Zune C, Jérôme R, de Groot HJM. Determination of Polyisoprene-block-poly(methyl methacrylate) Domain Sizes Using1H Spin Diffusion. MACROMOL CHEM PHYS 2003. [DOI: 10.1002/macp.200290060] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Moreno S, Rubio RG. Dielectric Study of the Dynamics of Poly(oxyethylene) Chains in Triblock Copolymers: Poly(oxyethylene)-b-polystyrene-b-poly(oxyethylene). Macromolecules 2002. [DOI: 10.1021/ma011732u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Susana Moreno
- Department Química Física I, Facultad de Química, Universidad Complutense, 28040-Madrid, Spain
| | - Ramón G. Rubio
- Department Química Física I, Facultad de Química, Universidad Complutense, 28040-Madrid, Spain
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