|
1
|
Wang Y, Niu Y, Geng X, Feng Z, Ye L. The Motility of β-Cyclodextrins Threaded on the Polyrotaxane Based Triblock Polymer and Its Influences on Mechanical Properties. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3757. [PMID: 39124420 PMCID: PMC11313138 DOI: 10.3390/ma17153757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 07/25/2024] [Accepted: 07/26/2024] [Indexed: 08/12/2024]
Abstract
Polyrotaxane (PR) has garnered increasing attention due to its unique structure and exceptional performance. In this study, a polypseudorotaxane (PPR) initiator was prepared through the self-assembly of bromine-capped Pluronic F68 and β-cyclodextrins (β-CD) in water. Polyrotaxane-containing triblock copolymers (PR copolymers) were successfully synthesized by atom transfer radical polymerization (ATRP) of butyl methacrylate (BMA) using the PPR initiator in the presence of Cu(I)Br/PMDETA. The structure of the PR copolymers was thoroughly characterized using infrared spectroscopy (IR), proton nuclear magnetic resonance (1H NMR), and gel permeation chromatography (GPC). The mobility of β-CD in the PR copolymers was demonstrated through dielectric measurements. Mechanical tests, including tensile strength assessments, thermal mechanical analysis, and dynamic mechanical analysis, confirmed the excellent mechanical properties and good processability of the PR copolymer, attributed to the PBMA blocks. Furthermore, the mechanical properties were found to be modulated by the motility of the threaded β-CDs. Consequently, the superior mechanical properties and the high mobility of the threaded β-CDs suggest promising potential for the as-prepared PR polymer in various advanced applications.
Collapse
Affiliation(s)
- Yufei Wang
- Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000, China; (Y.W.); (Y.N.)
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.G.); (Z.F.)
| | - Yafang Niu
- Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000, China; (Y.W.); (Y.N.)
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.G.); (Z.F.)
| | - Xue Geng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.G.); (Z.F.)
| | - Zengguo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.G.); (Z.F.)
| | - Lin Ye
- Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000, China; (Y.W.); (Y.N.)
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; (X.G.); (Z.F.)
| |
Collapse
|
|
2
|
Choi J, Ajiro H. Preparation of stereocomplex and pseudo-polyrotaxane with various cyclodextrins as wheel components using triblock copolymer of poly(ethylene glycol) and polylactide. SOFT MATTER 2022; 18:8885-8893. [PMID: 36377482 DOI: 10.1039/d2sm01124g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The ABA-type triblock-copolymers (BCPs) of polylactide (PLA) and poly(ethylene glycol) (PEG) were synthesized as axle components for rotaxane formation. It is known that α-cyclodextrin (CD) exists near the PEG moiety in pseudo-polyrotaxane (PPRX), and the PLA moiety can form a stereocomplex (SC), by mixing with L- and D-isomers. In this study, various CDs, including β-CD and γ-CD, were used as wheel components, and effects of CD structures on both PPRX and SC formations were studied. The solubility of CDs is influenced to form the PPRX, resulting in differing numbers of CDs in the axle. PPRX structures were investigated by 1H NMR, NOESY, and DOSY, and SC structures were investigated by FT-IR and XRD. Their thermal properties were also evaluated by DSC and TGA, to consider the physical properties of the simultaneous formation of PPRX and SC. This study gave insight into the complicated host-guest and polymer-polymer interactions.
Collapse
Affiliation(s)
- JaeYeong Choi
- Graduate School of Science and Technology, Division of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara, 630-0192, Japan.
| | - Hiroharu Ajiro
- Graduate School of Science and Technology, Division of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara, 630-0192, Japan.
| |
Collapse
|
|
3
|
Wang YC, Maeda R, Kali G, Yokoyama H, Wenz G, Ito K. Synthesis of Poly(Methyl Methacrylate)-Based Polyrotaxane via Reversible Addition-Fragmentation Chain Transfer Polymerization. ACS Macro Lett 2020; 9:1853-1857. [PMID: 35653687 DOI: 10.1021/acsmacrolett.0c00648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A polyrotaxane (PR) with poly(methyl methacrylate) (PMMA) as the main chain polymer was prepared via reversible addition-fragmentation chain transfer (RAFT) polymerization. Because of the special mechanism of RAFT, the suprastructure of a PMMA-based PR is established by synthesizing inclusion complexes of methyl methacrylate and gamma-cyclodextrin (γCD) into the middle of the poly-N-(3-dimethylamino) propyl methacrylamide segments. The presence of threaded γCD was determined via diffusion ordered spectroscopy from the alignment of the mobility of γCD and the main chain polymer. A PMMA-based PR with 2-20% CD coverage and a molecular weight of 7K-60K g/mol of PMMA-based PR was synthesized with a targeted molecular structure by mediating the RAFT polymerization. The PMMA-based PR prepared in this study is expected to be suitable for wide applications of tough materials with good heat resistance. Moreover, the investigation of this synthetical approach opened possibilities for more variety of PR with controllable properties.
Collapse
Affiliation(s)
- Yu-Cheng Wang
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Rina Maeda
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Gergely Kali
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Chemistry, Institute of Pharmacy, University of Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria
| | - Hideaki Yokoyama
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Gerhard Wenz
- Organic Macromolecular Chemistry, Saarland University, Campus Saarbrü cken C 4.2, 66123 Saarbrü cken, Germany
| | - Kohzo Ito
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| |
Collapse
|
|
4
|
Kong T, Ye L, Zhang AY, Feng ZG. How Does PHEMA Pass through the Cavity of γ-CDs to Create Mismatched Overfit Polypseudorotaxanes? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14076-14084. [PMID: 30372624 DOI: 10.1021/acs.langmuir.8b02988] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A syndiotactic-rich PHEMA oligomer ( rr = 74%, DP = 29, PDI = 1.19) was synthesized and subsequently subjected to self-assembly with a varying amount of γ-CDs in its aqueous solution to create mismatched overfit polypseudorotaxanes (PPRs). The inclusion complexation proceeded in an obvious mismatched manner between the cavity of γ-CDs and the cross-sectional area of an incoming PHEMA chain. The 2D-NOESY NMR analysis provided direct evidence indicating that two adjacent pendant hydroxyethyl groups in PHEMA preferably adopt a curled conformation to pass through the cavity of γ-CDs, giving the PPRs characteristics of a mismatched overfit instead of a matched tight-fit crystal structure. The results suggested that the mutual adaption of pendant side chains of HEMA units with the cavity geometry of γ-CDs would play a dominant role in this unfavorable overfit inclusion complexation besides the size of γ-CDs and the stereoregularity of the PHEMA chain.
Collapse
Affiliation(s)
- Tao Kong
- School of Materials Science and Engineering , Beijing Institute of Technology , No. 5 South Street Zhongguancun , Beijing 100081 , China
- Beijing Building Construction Research Institute Co., Ltd , No. 34 Fuxing Street , Beijing 100039 , China
| | - Lin Ye
- School of Materials Science and Engineering , Beijing Institute of Technology , No. 5 South Street Zhongguancun , Beijing 100081 , China
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications , No. 5 South Street Zhongguancun , Beijing 100081 , China
| | - Ai-Ying Zhang
- School of Materials Science and Engineering , Beijing Institute of Technology , No. 5 South Street Zhongguancun , Beijing 100081 , China
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications , No. 5 South Street Zhongguancun , Beijing 100081 , China
| | - Zeng-Guo Feng
- School of Materials Science and Engineering , Beijing Institute of Technology , No. 5 South Street Zhongguancun , Beijing 100081 , China
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications , No. 5 South Street Zhongguancun , Beijing 100081 , China
| |
Collapse
|
|
5
|
Zhang Z, Zhang Y, Lin Z, Mulyadi A, Mu W, Deng Y. Butyric anhydride modified lignin and its oil-water interfacial properties. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2017.02.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|