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Wu H, Li X, Ji H, Svensson B, Bai Y. Improved production of gamma-cyclodextrin from high-concentrated starch using enzyme pretreatment under swelling condition. Carbohydr Polym 2022; 284:119124. [DOI: 10.1016/j.carbpol.2022.119124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 11/02/2022]
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Lu Y, Kang W, Jiang J, Chen J, Xu D, Zhang P, Zhang L, Feng H, Wu H. Study on the stabilization mechanism of crude oil emulsion with an amphiphilic polymer using the β-cyclodextrin inclusion method. RSC Adv 2017. [DOI: 10.1039/c6ra28528g] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The β-cyclodextrin inclusion method to investigate crude oil emulsions stabilized by amphiphilic polymers is proposed.
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Affiliation(s)
- Yao Lu
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Wanli Kang
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Jiatong Jiang
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Jun Chen
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Derong Xu
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Pengyi Zhang
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Liming Zhang
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Haishun Feng
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
| | - Hairong Wu
- Research Institute of Enhanced Oil Recovery
- China University of Petroleum (Beijing)
- Beijing
- P. R. China 102249
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Wang J, Qiu Z, Wang Y, Li L, Guo X, Pham DT, Lincoln SF, Prud'homme RK. Supramolecular polymer assembly in aqueous solution arising from cyclodextrin host-guest complexation. Beilstein J Org Chem 2016; 12:50-72. [PMID: 26877808 PMCID: PMC4734410 DOI: 10.3762/bjoc.12.7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 12/11/2015] [Indexed: 01/27/2023] Open
Abstract
The employment of cyclodextrin host–guest complexation to construct supramolecular assemblies with an emphasis on polymer networks is reviewed. The main driving force for this supramolecular assembly is host–guest complexation between cyclodextrin hosts and guest groups either of which may be discrete molecular species or substituents on a polymer backbone. The effects of such complexation on properties at the molecular and macroscopic levels are discussed. It is shown that cyclodextrin complexation may be used to design functional polymer materials with tailorable properties, especially for photo-, pH-, thermo- and redox-responsiveness and self-healing.
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Affiliation(s)
- Jie Wang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhiqiang Qiu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yiming Wang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Li Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xuhong Guo
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Duc-Truc Pham
- Departmant of Chemistry, University of Adelaide, Adelaide, SA 5005, Australia
| | - Stephen F Lincoln
- Departmant of Chemistry, University of Adelaide, Adelaide, SA 5005, Australia
| | - Robert K Prud'homme
- Department of Chemical Engineering, Princeton University, Princeton, NJ 08544, USA
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Jiang L, Yan Y, Huang J. Versatility of cyclodextrins in self-assembly systems of amphiphiles. Adv Colloid Interface Sci 2011; 169:13-25. [PMID: 21839422 DOI: 10.1016/j.cis.2011.07.002] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 07/14/2011] [Accepted: 07/16/2011] [Indexed: 11/25/2022]
Abstract
Recently, cyclodextrins (CDs) were found to play important yet complicated (or even apparently opposite sometimes) roles in self-assembly systems of amphiphiles or surfactants. Herein, we try to review and clarify the versatility of CDs in surfactant assembly systems by 1) classifying the roles played by CDs into two groups (modulator and building unit) and four subgroups (destructive and constructive modulators, amphiphilic and unamphiphilic building units), 2) comparing these subgroups, and 3) analyzing mechanisms. As a modulator, although CDs by themselves do not participate into the final surfactant aggregates, they can greatly affect the aggregates in two ways. In most cases CDs will destroy the aggregates by depleting surfactant molecules from the aggregates (destructive), or in certain cases CDs can promote the aggregates to grow by selectively removing the less-aggregatable surfactant molecules from the aggregates (constructive). As an amphiphilic building unit, CDs can be chemically (by chemical bonds) or physically (by host-guest interaction) attached to a hydrophobic moiety, and the resultant compounds act as classic amphiphiles. As an unamphiphilic building unit, CD/surfactant complexes or even CDs on their own can assemble into aggregates in an unconventional, unamphiphilic manner driven by CD-CD H-bonds. Moreover, special emphasis is put on two recently appeared aspects: the constructive modulator and unamphiphilic building unit.
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Nielsen AL, Andersen MBO, Bugge TV, Nielsen CF, Nielsen TB, Wimmer R, Yu D, Larsen KL. Use of β‐cyclodextrins to control the structure of water‐soluble copolymers with hydrophobic parts. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23704] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- A. L. Nielsen
- Department of Chemistry and Water Technology, Danish Technological Institute, Kongsvang Allé 29, 8000 Aarhus, Denmark
| | - M. B. O. Andersen
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg DK‐9000, Denmark
| | - T. V. Bugge
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg DK‐9000, Denmark
| | - C. F. Nielsen
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg DK‐9000, Denmark
| | - T. B. Nielsen
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg DK‐9000, Denmark
| | - R. Wimmer
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg DK‐9000, Denmark
| | - D. Yu
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg DK‐9000, Denmark
| | - K. L. Larsen
- Section of Chemistry, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, Aalborg DK‐9000, Denmark
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Cho SY, Allcock HR. Synthesis of Adamantyl Polyphosphazene−Polystyrene Block Copolymers, and β-Cyclodextrin-Adamantyl Side Group Complexation. Macromolecules 2009. [DOI: 10.1021/ma900567n] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Song Yun Cho
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Research Building, University Park, Pennsylvania 16802
| | - Harry R. Allcock
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Research Building, University Park, Pennsylvania 16802
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Talwar S, Harding J, Oleson KR, Khan SA. Surfactant-mediated modulation of hydrophobic interactions in associative polymer solutions containing cyclodextrin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:794-802. [PMID: 19072321 DOI: 10.1021/la803056e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The ability of nonionic surfactants to modulate the rheological characteristics of comblike hydrophobically modified associative polymer solutions containing cyclodextrin (CD) is examined. Addition of either alpha- or beta-CD to these polymers results in a marked decrease in solution viscosity and viscoelastic properties because of the encapsulation of the polymer hydrophobes by CD. Nonionic surfactants, introduced to such a system, alter the hydrophobic interactions by competing with the polymer hydrophobes for complexation with the CDs. In this regard, nonylphenol ethoxylates (NPe) with different ethylene oxide chain lengths, which determine the hydrophilic-lipophilic balance (HLB) of the surfactant, are used. Our results reveal that the extent and rate of recovery of zero shear viscosity as well as dynamic moduli are strongly influenced by the type of CD (alpha versus beta) as well as the HLB of the surfactant. For polymer solutions containing alpha-CD, recovery is observed solely in the presence of a low-HLB surfactant (NP6 and NP8). Additionally, in the case of NP6, the viscosity increases monotonically above the original hydrophobically modified alkali-soluble emulsion viscosity with surfactant addition, whereas for that of a higher HLB surfactant (NP15), the viscosity shows no appreciable change. In the case of beta-CD, on the other hand, a complete recovery as well as further enhancement of rheological properties is achieved using the above surfactants. However, the trends of viscosity modulation are dissimilar for different surfactants as we witness a monotonous increase in the case of NP6 while a maximum in viscosity is observed in the presence of NP8 and NP15. The contrasting observations can be explained in terms of varying affinities of alpha- and beta-CDs to bind with NP surfactants and the existence of different micellar structures in solution as governed by surfactant HLB. These results are further confirmed by UV/vis spectroscopy and cloud point measurements.
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Affiliation(s)
- Sachin Talwar
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, USA
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