1
|
Dikshit KV, Visal AM, Janssen F, Larsen A, Bruns CJ. Pressure-Sensitive Supramolecular Adhesives Based on Lipoic Acid and Biofriendly Dynamic Cyclodextrin and Polyrotaxane Cross-Linkers. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17256-17267. [PMID: 36926820 DOI: 10.1021/acsami.3c00927] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Slide-ring materials are polymer networks with mobile cross-links that exhibit impressive stress dissipation and fracture resistance owing to the pulley effect. On account of their remarkable ability to dissipate the energy of deformation, these materials have found their way into advanced materials such as abrasion-resistant coatings and elastic battery electrode binders. In this work, we explore the role of mobile cross-links on the properties of a biofriendly pressure-sensitive adhesive made using composites of cyclodextrin-based macromolecules and poly(lipoic acid). We modify cyclodextrin-based hosts and polyrotaxanes with pendant groups of lipoic acid (a commonly ingested antioxidant) to incorporate them as cross-links in poly(lipoic acid) networks obtained by simple heating in open air. By systematically varying the adhesive formulations while probing their mechanical and adhesive properties, we uncover trends in structure-property relationships that enable one to tune network properties and access biofriendly, high-tack adhesives.
Collapse
Affiliation(s)
- Karan Vivek Dikshit
- Materials Science and Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Aseem Milind Visal
- Materials Science and Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Femke Janssen
- Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
| | - Alexander Larsen
- Paul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Carson J Bruns
- Paul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
- ATLAS Institute, University of Colorado Boulder, Boulder, Colorado 80309, United States
| |
Collapse
|
2
|
Ihsan AB, Imran AB, Susan MABH. Advanced Functional Polymers: Properties and Supramolecular Phenomena in Hydrogels and Polyrotaxane-based Materials. CHEMISTRY AFRICA 2023; 6:79-94. [DOI: 10.1007/s42250-022-00460-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 08/20/2022] [Indexed: 09/01/2023]
|
3
|
Structural aspect on “Salting-in” mechanism of PEG chains into a phosphonium-based ionic liquid using lithium salt. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
4
|
Dikshit K, Bruns CJ. Chemorheological Monitoring of Cross-Linking in Slide-ring Gels Derived From α-cyclodextrin Polyrotaxanes. Front Chem 2022; 10:923775. [PMID: 35928212 PMCID: PMC9344045 DOI: 10.3389/fchem.2022.923775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 06/20/2022] [Indexed: 11/17/2022] Open
Abstract
Despite hundreds of studies involving slide-ring gels derived from cyclodextrin (CD)-based polyrotaxanes (PRs), their covalent cross-linking kinetics are not well characterized. We employ chemorheology as a tool to measure the gelation kinetics of a model slide-ring organogel derived from α-cyclodextrin/poly (ethylene glycol) PRs cross-linked with hexamethylenediisocyanate (HMDI) in DMSO. The viscoelastic properties of the gels were monitored in situ by small-amplitude oscillatory shear (SAOS) rheology, enabling us to estimate the activation barrier and rate law for cross-linking while mapping experimental parameters to kinetics and mechanical properties. Gelation time, gel point, and final gel elasticity depend on cross-linker concentration, but polyrotaxane concentration only affects gelation time and elasticity (not gel point), while temperature only affects gelation time and gel point (not final elasticity). These measurements facilitate the rational design of slide-ring networks by simple parameter selection (temperature, cross-linker concentration, PR concentration, reaction time).
Collapse
Affiliation(s)
- Karan Dikshit
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, United States
| | - Carson J. Bruns
- Paul M. Rady Mechanical Engineering Department, University of Colorado Boulder, Boulder, CO, United States
- ATLAS Institute, University of Colorado Boulder, Boulder, CO, United States
- *Correspondence: Carson J. Bruns ,
| |
Collapse
|
5
|
Resmerita A, Asandulesa M, Farcas A. Evaluation of the Chemical, Morphological and Dielectric Properties of Supramolecular Networks Consisting of Polyethylene Glycol Polyrotaxanes and Polystyrene/Semi‐Rotaxane with Hydroxypropyl‐
β
‐Cyclodextrins. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ana‐Maria Resmerita
- “Petru Poni” Institute of Macromolecular Chemistry 41 A, Grigore Ghica Voda Alley Iasi 700487 Romania
| | - Mihai Asandulesa
- “Petru Poni” Institute of Macromolecular Chemistry 41 A, Grigore Ghica Voda Alley Iasi 700487 Romania
| | - Aurica Farcas
- “Petru Poni” Institute of Macromolecular Chemistry 41 A, Grigore Ghica Voda Alley Iasi 700487 Romania
| |
Collapse
|
6
|
Ishikawa A, Ikeda N, Maeda S, Fujii K. Polymer network formation mechanism of multifunctional poly(ethylene glycol)s in ionic liquid electrolyte with a lithium salt. Phys Chem Chem Phys 2021; 23:16966-16972. [PMID: 34338253 DOI: 10.1039/d1cp02710g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We report a controlled polymer network gel electrolyte based on a multifunctional poly(ethylene glycol) (PEG) prepolymer (herein, tetrafunctional PEGs (tetra-PEGs) and bisfunctional linear PEGs (linear-PEGs)) and an ionic liquid (IL)-based electrolyte solution containing lithium bis(trifluoromethanesulfonyl)imide (LiTFSA) salt. The gel electrolyte was obtained via a gelation reaction, i.e., the Michael addition reaction between maleimide (MA)-terminated tetra-PEGs and thiol (SH)-terminated tetra- or linear-PEGs (termed tetra/tetra-PEG gel or tetra/linear-PEG gel systems), in a LiTFSA/IL solution under noncatalytic conditions at room temperature. For the tetra/linear-PEG system, the gelation reaction depended on the ratio of tetra-PEG-MA and linear-PEG-SH; an optimum terminal MA/SH ratio of 1 : 1 yielded a reaction efficiency (p) of ∼98% (an ideal polymer network structure). The tetra/tetra-PEG system with an MA/SH ratio of 1 : 1 also achieved a reaction efficiency of ∼98%. Time-resolved rheological measurements revealed that the network formation process can be categorized into three steps: (I) oligomer formation at an early stage of the reaction, (II) formation of a roughly linked polymer network with a large mesh size as the reaction proceeded, and (III) full network formation also at the local scale near the gelation completion time. The resulting tetra/linear-PEG ion gel with an optimum MA/SH ratio of 1 : 1 exhibited high stretchability, enduring approximately 10-fold elongation, and superior ion-conducting properties compared with the corresponding IL-based electrolyte solution.
Collapse
Affiliation(s)
- Asumi Ishikawa
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan.
| | | | | | | |
Collapse
|
7
|
Mayumi K, Liu C, Yasuda Y, Ito K. Softness, Elasticity, and Toughness of Polymer Networks with Slide-Ring Cross-Links. Gels 2021; 7:91. [PMID: 34287305 PMCID: PMC8293080 DOI: 10.3390/gels7030091] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 11/16/2022] Open
Abstract
Slide-ring (SR) gels cross-linked by ring molecules are characterized by softness (low Young's modulus), elasticity (low hysteresis loss), and toughness (large fracture energy). In this article, the mechanical and fracture properties of SR gels are reviewed to clarify the physical understanding of the relationship between the molecular-level sliding dynamics of the slide-ring cross-links and macroscopic properties of SR gels. The low Young's modulus and large fracture energy of SR gels are expressed by simple equations as a function of the degree of sliding movement. The dynamic fracture behaviors of SR gels gives us the time scale of the sliding dynamics of the cross-links, which is at the micro-sec scale. The fast sliding motion of the cross-links leads to the elasticity of the SR gels. The SR concept can be applied to solvent-free elastomers and composite materials.
Collapse
Affiliation(s)
- Koichi Mayumi
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan;
- Material Innovation Research Center (MIRC), Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan;
| | - Chang Liu
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan;
| | - Yusuke Yasuda
- Material Innovation Research Center (MIRC), Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan;
| | - Kohzo Ito
- Material Innovation Research Center (MIRC), Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan;
| |
Collapse
|
8
|
Liu Z, Ye L, Xi J, Wang J, Feng ZG. Cyclodextrin polymers: Structure, synthesis, and use as drug carriers. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101408] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
9
|
|
10
|
Yoshitake M, Han J, Sakai T, Morita M, Fujii K. TetraPEG Network Formation via a Michael Addition Reaction in an Ionic Liquid: Application to Polymer Gel Electrolyte for Electric Double-layer Capacitors. CHEM LETT 2019. [DOI: 10.1246/cl.190143] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mari Yoshitake
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Jihae Han
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Takamasa Sakai
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Masayuki Morita
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Kenta Fujii
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| |
Collapse
|
11
|
Novel supramolecular networks based on PEG and PEDOT cross-linked polyrotaxanes as electrical conductive materials. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
12
|
Ishikawa A, Sakai T, Fujii K. An ionic liquid gel with ultralow concentrations of tetra-arm polymers: Gelation kinetics and mechanical and ion-conducting properties. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.044] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
13
|
Liu C, Kadono H, Mayumi K, Kato K, Yokoyama H, Ito K. Unusual Fracture Behavior of Slide-Ring Gels with Movable Cross-Links. ACS Macro Lett 2017; 6:1409-1413. [PMID: 35650803 DOI: 10.1021/acsmacrolett.7b00729] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, the quasi-static fracture behavior of slide-ring gels (SR gels), in which movable cross-links can slide on polymer chains, is for the first time investigated and compared to that of conventional polymer gels with fixed cross-links (FC gels). For the usual FC gels, there is a trade-off relation between toughness (fracture energy [Formula: see text]) and stiffness (Young's modulus E): with increasing cross-linking density, the Young's modulus E increases, while fracture energy [Formula: see text] decreases. However, SR gels show an unusual fracture behavior that contradicts this trade-off relation. The fracture energy of SR gels is independent of the Young's modulus, in other words, the cross-linking density; moreover, it rises with increasing slidable range of movable cross-links on polymer chains. A new molecular model is proposed by attributing the unusual fracture properties of SR gels to the relative sliding movement between polymer chains and cross-links. Utilizing this concept, simultaneous fulfillment of high stiffness and high toughness in polymer gels can be realized.
Collapse
Affiliation(s)
- Chang Liu
- Graduate School of Frontier
Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Hirokazu Kadono
- Graduate School of Frontier
Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Koichi Mayumi
- Graduate School of Frontier
Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Kazuaki Kato
- Graduate School of Frontier
Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Graduate School of Frontier
Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Kohzo Ito
- Graduate School of Frontier
Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| |
Collapse
|
14
|
Kamio E, Yasui T, Iida Y, Gong JP, Matsuyama H. Inorganic/Organic Double-Network Gels Containing Ionic Liquids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1704118. [PMID: 29114950 DOI: 10.1002/adma.201704118] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Indexed: 06/07/2023]
Abstract
Highly robust ion gels, termed double-network (DN) ion gels, composed of inorganic/organic interpenetrating networks and a large amount of ionic liquids (ILs), are fabricated. The DN ion gels with an 80 wt% IL content show extraordinarily high mechanical strength: more than 28 MPa of compressive fracture stress. In the DN ion gel preparation, a brittle inorganic network of physically bonded silica nanoparticles and a ductile organic network of polydimethylacrylamide (PDMAAm) are formed in the IL. Because of the different reaction mechanisms of the inorganic/organic networks, the DN ion gels can be formed by an easy and free-shapeable one-pot synthesis. They can be prepared in a controllable manner by manipulating the formation order of the inorganic and organic networks via not only multistep but also single-step processes. When silica particles form a network prior to the PDMAAm network formation, DN ion gels can be prepared. The brittle silica particle network in the DN ion gel, serving as sacrificial bonds, easily ruptures under loading to dissipate energy, while the ductile PDMAAm network maintains the shape of the material by the rubber elasticity. Given the reversible physical bonding between the silica particles, the DN ion gels exhibit a significant degree of self-recovery by annealing.
Collapse
Affiliation(s)
- Eiji Kamio
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Tomoki Yasui
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Yu Iida
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Jian Ping Gong
- Faculty of Advanced Life Science, Hokkaido University, Sapporo, 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, 001-0021, Japan
| | - Hideto Matsuyama
- Center for Membrane and Film Technology, Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| |
Collapse
|
15
|
Ranjbaran F, Kamio E, Matsuyama H. Ion Gel Membrane with Tunable Inorganic/Organic Composite Network for CO2 Separation. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b03279] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fatemeh Ranjbaran
- Center for Membrane and Film Technology,
Department of Chemical Science and Engineering, Kobe University, 1-1
Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Eiji Kamio
- Center for Membrane and Film Technology,
Department of Chemical Science and Engineering, Kobe University, 1-1
Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| | - Hideto Matsuyama
- Center for Membrane and Film Technology,
Department of Chemical Science and Engineering, Kobe University, 1-1
Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan
| |
Collapse
|
16
|
Araki J, Sainou N. Amino acid-derivatized slide-ring gels: Chemical crosslinking of polyrotaxane conjugates with different amino acid pendant groups. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.07.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
17
|
Oster M, Hébraud A, Gallet S, Lapp A, Pollet E, Avérous L, Schlatter G. Star-Pseudopolyrotaxane Organized in Nanoplatelets for Poly(ε-caprolactone)-Based Nanofibrous Scaffolds with Enhanced Surface Reactivity. Macromol Rapid Commun 2014; 36:292-7. [DOI: 10.1002/marc.201400533] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 10/25/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Murielle Oster
- ICPEES Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé, UMR 7515, CNRS; Université de Strasbourg; 25 Rue Becquerel 67089 Strasbourg Cedex France
| | - Anne Hébraud
- ICPEES Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé, UMR 7515, CNRS; Université de Strasbourg; 25 Rue Becquerel 67089 Strasbourg Cedex France
| | - Sébastien Gallet
- ICPEES Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé, UMR 7515, CNRS; Université de Strasbourg; 25 Rue Becquerel 67089 Strasbourg Cedex France
| | - Alain Lapp
- Laboratoire Léon Brillouin; LLB, CEA Saclay; Bat 56 91191 Gif-Sur-Yvette France
| | - Eric Pollet
- ICPEES Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé, UMR 7515, CNRS; Université de Strasbourg; 25 Rue Becquerel 67089 Strasbourg Cedex France
| | - Luc Avérous
- ICPEES Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé, UMR 7515, CNRS; Université de Strasbourg; 25 Rue Becquerel 67089 Strasbourg Cedex France
| | - Guy Schlatter
- ICPEES Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé, UMR 7515, CNRS; Université de Strasbourg; 25 Rue Becquerel 67089 Strasbourg Cedex France
| |
Collapse
|
18
|
Tang C, Inomata A, Sakai Y, Yokoyama H, Miyoshi T, Ito K. Effects of Chemical Modification on the Molecular Dynamics of Complex Polyrotaxanes Investigated by Solid-State NMR. Macromolecules 2013. [DOI: 10.1021/ma401476g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chuan Tang
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Aoi Inomata
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yasuhiro Sakai
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Toshikazu Miyoshi
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Kohzo Ito
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| |
Collapse
|
19
|
Araki J, Kagaya K. Synthesis of polyrotaxane–glycine conjugates with various degrees of substitution via conjugation with Boc- or Z-glycine and subsequent deprotection. Polym J 2013. [DOI: 10.1038/pj.2013.15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
20
|
|
21
|
Marangoci N, Ardeleanu R, Ursu L, Ibanescu C, Danu M, Pinteala M, Simionescu BC. Polysiloxane ionic liquids as good solvents for β-cyclodextrin-polydimethylsiloxane polyrotaxane structures. Beilstein J Org Chem 2012; 8:1610-8. [PMID: 23209493 PMCID: PMC3510993 DOI: 10.3762/bjoc.8.184] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 08/17/2012] [Indexed: 11/30/2022] Open
Abstract
An ionic liquid based on polydimethylsiloxane with imidazolium salt brushes was synthesized as a good solvent for β-cyclodextrin-polydimethylsiloxane rotaxane. As expected the PDMS-Im/Br ionic liquid had a liquid-like non-Newtonian behavior with rheological parameters dependent on frequency and temperature. The addition of rotaxane to the ionic liquid strengthened the non-Newtonian character of the sample and a type of stable liquid-like network was formed due to the contribution of weak ionic interactions. The structure is stable in the 20 to 80 °C domain as proved by the oscillatory and rotational rheological tests.
Collapse
Affiliation(s)
- Narcisa Marangoci
- Centre of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iasi, Romania
| | | | | | | | | | | | | |
Collapse
|
22
|
Araki J, Ohkawa K, Uchida Y, Murakami Y. Synthesis of a “molecular rope curtain”: Preparation and characterization of a sliding graft copolymer with grafted poly(ethylene glycol) side chains by the “grafting onto” strategy. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25056] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
23
|
Araki J. Polyrotaxane derivatives. II. Preparation and characterization of ionic polyrotaxanes and ionic slide‐ring gels. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24650] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jun Araki
- International Young Researchers Empowerment Center, Shinshu University, Tokida 3‐15‐1, Ueda 386‐8567, Japan
| |
Collapse
|
24
|
Araki J. Effect of preparation conditions for poly(ethylene glycol)/cyclodextrin polyrotaxane on modes of end-capping reactions and decomposition of the yielded polyrotaxane. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24336] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
25
|
Inomata A, Sakai Y, Zhao C, Ruslim C, Shinohara Y, Yokoyama H, Amemiya Y, Ito K. Crystallinity and Cooperative Motions of Cyclic Molecules in Partially Threaded Solid-State Polyrotaxanes. Macromolecules 2010. [DOI: 10.1021/ma100259t] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aoi Inomata
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yasuhiro Sakai
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Changming Zhao
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
- Advanced Softmaterials, Inc., Tokatsu Techno Plaza 603, 5-4-6 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
| | - Christian Ruslim
- Advanced Softmaterials, Inc., Tokatsu Techno Plaza 603, 5-4-6 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan
| | - Yuya Shinohara
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yoshiyuki Amemiya
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| |
Collapse
|
26
|
Wang J, Gao P, Ye L, Zhang AY, Feng ZG. Solvent- and Thermoresponsive Polyrotaxanes with β-Cyclodextrin Dispersed/Aggregated Structures on a Pluronic F127 Backbone. J Phys Chem B 2010; 114:5342-9. [DOI: 10.1021/jp101068b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Wang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Peng Gao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Ai-ying Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Zeng-guo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| |
Collapse
|
27
|
|
28
|
Travelet C, Hébraud P, Perry C, Brochon C, Hadziioannou G, Lapp A, Schlatter G. Temperature-Dependent Structure of α-CD/PEO-Based Polyrotaxanes in Concentrated Solution in DMSO: Kinetics and Multiblock Copolymer Behavior. Macromolecules 2010. [DOI: 10.1021/ma902686p] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christophe Travelet
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Pascal Hébraud
- Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS UMR 7504, Université de Strasbourg, 23 rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Christophe Perry
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Cyril Brochon
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Georges Hadziioannou
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| | - Alain Lapp
- Laboratoire Léon Brillouin, CEA Saclay, 91191 Gif-sur-Yvette cedex, France
| | - Guy Schlatter
- Laboratoire d’Ingénierie des Polymères pour les Hautes Technologies, EAC 4379, CNRS, Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg cedex 2, France
| |
Collapse
|
29
|
Wu J, Gao C. Click Chemistry Approach to Rhodamine B-Capped Polyrotaxanes and their Unique Fluorescence Properties. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900281] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
30
|
Kume T, Araki J, Sakai Y, Mayumi K, Kidowaki M, Yokoyama H, Ito K. Static and dynamic light scattering studies on dilute polyrotaxane solutions. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/184/1/012018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
31
|
Kato K, Inoue K, Kidowaki M, Ito K. Organic−Inorganic Hybrid Slide-Ring Gels: Polyrotaxanes Consisting of Poly(dimethylsiloxane) and γ-Cyclodextrin and Subsequent Topological Cross-Linking. Macromolecules 2009. [DOI: 10.1021/ma9011895] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuaki Kato
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Katsunari Inoue
- Advanced Softmaterials Inc., Tokatsu Techno plaza 603, 5-4-6 Kashiwanoha, Kashiwa-shi, Chiba 277-0882, Japan
| | - Masatoshi Kidowaki
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| |
Collapse
|
32
|
Araki J, Kagaya K, Ohkawa K. Synthesis and Characterization of Polyrotaxane−Amino Acid Conjugates: A New Synthetic Pathway for Amino-Functionalized Polyrotaxanes. Biomacromolecules 2009; 10:1947-54. [DOI: 10.1021/bm900343y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jun Araki
- International Young Researchers Empowerment Center, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan, and Institute of High Polymer Research, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
| | - Keisuke Kagaya
- International Young Researchers Empowerment Center, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan, and Institute of High Polymer Research, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
| | - Kousaku Ohkawa
- International Young Researchers Empowerment Center, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan, and Institute of High Polymer Research, Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
| |
Collapse
|
33
|
He Y, Chen Q, Xu C, Zhang J, Shen X. Interaction between Ionic Liquids and β-Cyclodextrin: A Discussion of Association Pattern. J Phys Chem B 2008; 113:231-8. [DOI: 10.1021/jp808540m] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yifeng He
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Qingde Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Chao Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jingjing Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xinghai Shen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
34
|
Samitsu S, Araki J, Shimomura T, Ito K. Synthesis of a Molecular Tube in Dimethyl Sulfoxide and Its Inclusion Complexation Behavior with Poly(ethylene oxide-ran-propylene oxide). Macromolecules 2008. [DOI: 10.1021/ma702040c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sadaki Samitsu
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5-603 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan, and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Jun Araki
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5-603 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan, and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takeshi Shimomura
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5-603 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan, and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5-603 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan, and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
35
|
Deng W, Yamaguchi H, Takashima Y, Harada A. Construction of Chemical-Responsive Supramolecular Hydrogels from Guest-Modified Cyclodextrins. Chem Asian J 2008; 3:687-95. [DOI: 10.1002/asia.200700378] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
36
|
Araki J, Kataoka T, Ito K. Preparation of a "sliding graft copolymer", an organic solvent-soluble polyrotaxane containing mobile side chains, and its application for a crosslinked elastomeric supramolecular film. SOFT MATTER 2008; 4:245-249. [PMID: 32907235 DOI: 10.1039/b715231k] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel "sliding graft copolymer" (SGC), in which many linear poly-ε-caprolactone (PCL) side chains are bound to cyclodextrin rings of a polyrotaxane, was prepared by ring-opening polymerization of ε-caprolactone initiated by hydroxyl groups of the polyrotaxane. An amorphous, flexible, and sufficiently tough elastomer film was prepared by crosslinking the obtained SGC-a supramolecule possessing a number of mobile side chains-with hexamethylene diisocyanate (HMDI).
Collapse
Affiliation(s)
- Jun Araki
- Department of Advanced Material Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-City, Chiba 277-8562, Japan. and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Toshiyuki Kataoka
- Department of Advanced Material Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-City, Chiba 277-8562, Japan.
| | - Kohzo Ito
- Department of Advanced Material Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-City, Chiba 277-8562, Japan. and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
37
|
ITO K. New Developments of Polymer Cross-Linking: Slide-Ring Polymeric Materials. KOBUNSHI RONBUNSHU 2008. [DOI: 10.1295/koron.65.445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
38
|
Araki J, Ito K. Recent advances in the preparation of cyclodextrin-based polyrotaxanes and their applications to soft materials. SOFT MATTER 2007; 3:1456-1473. [PMID: 32900100 DOI: 10.1039/b705688e] [Citation(s) in RCA: 214] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The present review article deals with recent novel studies on the preparation and application of polyrotaxanes comprised of cyclodextrins (CDs) and various linear polymers, especially poly(ethylene glycol) (PEG). First, a brief introduction of the historical background of the pioneering work on the preparation of an inclusion complex and polyrotaxane is provided. Subsequently, the authors have focused on the recently developed solvent systems for the polyrotaxane. These new solvents are interesting from two fundamental viewpoints: (1) from the perspective of the clarification of the hydrogen-bonding-based dissolution mechanism of polyrotaxanes; and (2) from the practical viewpoint of the preparation of modified polyrotaxanes or slide-ring gels containing ionic liquids. A wide variety of polyrotaxane derivatives, whose cyclodextrin moiety was modified to carry various functional groups, and their intriguing characteristics are introduced in this article. Finally, many instances of the application of the PEG-CD polyrotaxane to soft materials, such as gels, molecular tubes and multivalent ligand systems, are summarized.
Collapse
Affiliation(s)
- Jun Araki
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8562, Japan. and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan.
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa City, Chiba 277-8562, Japan. and CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan.
| |
Collapse
|
39
|
Araki J, Ito K. Strongly thixotropic viscosity behavior of dimethylsulfoxide solution of polyrotaxane comprising α-cyclodextrin and low molecular weight poly(ethylene glycol). POLYMER 2007. [DOI: 10.1016/j.polymer.2007.09.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
40
|
Deng W, Yamaguchi H, Takashima Y, Harada A. A chemical-responsive supramolecular hydrogel from modified cyclodextrins. Angew Chem Int Ed Engl 2007; 46:5144-7. [PMID: 17526038 DOI: 10.1002/anie.200701272] [Citation(s) in RCA: 164] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei Deng
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | | | | | | |
Collapse
|
41
|
Deng W, Yamaguchi H, Takashima Y, Harada A. A Chemical-Responsive Supramolecular Hydrogel from Modified Cyclodextrins. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701272] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
42
|
Ito K. Novel Cross-Linking Concept of Polymer Network: Synthesis, Structure, and Properties of Slide-Ring Gels with Freely Movable Junctions. Polym J 2007. [DOI: 10.1295/polymj.pj2006239] [Citation(s) in RCA: 296] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
43
|
Kataoka T, Nagao Y, Kidowaki M, Araki J, Ito K. Liquid–liquid equilibria of polyrotaxane and poly(vinyl alcohol). Colloids Surf B Biointerfaces 2007; 56:270-6. [PMID: 17196801 DOI: 10.1016/j.colsurfb.2006.11.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Accepted: 11/15/2006] [Indexed: 11/23/2022]
Abstract
Liquid-liquid equillibria (LLE) of the tertiary system of hydroxypropylated polyrotaxane (HPPR)-poly(vinyl alcohol) (PVA)-solvent have been investigated by focusing on the internal structures of HPPR-PVA blend gels. The phase diagrams of the HPPR-PVA aqueous systems displayed two liquid phases at a high concentration and molecular weight of PVA. This result was consistent with the prediction of the Flory-Huggins lattice model. On the contrary, the HPPR-PVA-DMSO system exhibited only a single phase. The HPPR-PVA blend gels crosslinked in dimethylsulfoxide (DMSO) were highly transparent over a wide concentration range, while the gels prepared in water were opaque at high polymer concentrations. Spherical domains were observed in the opaque gels by laser scanning confocal microscopy, and the sizes of the domains were significantly dependent on the amount of cross-linking reagent utilized. These results indicated that the transparency of the HPPR-PVA blend gels was strongly affected by the competition between the liquid-liquid two-phase separation and the crosslinking HPPR and PVA polymers during the preparation of the blend gels.
Collapse
Affiliation(s)
- Toshiyuki Kataoka
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5-603 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.
| | | | | | | | | |
Collapse
|
44
|
Araki J, Kataoka T, Ito K. New solvent for polyrotaxane. III. Dissolution of a poly(ethylene glycol)/cyclodextrin polyrotaxane in a calcium thiocyanate aqueous solution orN-methylmorpholine-N-oxide monohydrate. J Appl Polym Sci 2007. [DOI: 10.1002/app.26232] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
45
|
Araki J, Kataoka T, Katsuyama N, Teramoto A, Ito K, Abe K. A preliminary study for fiber spinning of mixed solutions of polyrotaxane and cellulose in a dimethylacetamide/lithium chloride (DMAc/LiCl) solvent system. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.09.060] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
46
|
Araki J, Ito K. Polyrotaxane derivatives. I. Preparation of modified polyrotaxanes with nonionic functional groups and their solubility in organic solvents. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21717] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
47
|
|