1
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Wu R, Lenz TM, Alfayez FAS, Zhao R, Rupper P, Perret E, Lehner S, Jovic M, Gaan S, Rieger B, Heuberger M. Ambient Catalytic Spinning of Polyethylene Nanofibers. Angew Chem Int Ed Engl 2024; 63:e202315326. [PMID: 38226704 DOI: 10.1002/anie.202315326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 01/17/2024]
Abstract
A novel single-atom Ni(II) catalyst (Ni-OH) is covalently immobilized onto the nano-channels of mesoporous Santa Barbara Amorphous (SBA)-15 particles and isotropic Anodized Aluminum Oxide (AAO) membrane for confined-space ethylene extrusion polymerization. The presence of surface-tethered Ni complexes (Ni@SBA-15 and Ni@AAO) is confirmed by the inductively coupled plasma-optical emission spectrometry (ICP-OES) and X-ray photoelectron spectroscopy (XPS). In the catalytic spinning process, the produced PE materials exhibit very homogeneous fibrous morphology at nanoscale (diameter: ~50 nm). The synthesized PE nanofibers extrude in a highly oriented manner from the nano-reactors at ambient temperature. Remarkably high Mw (1.62×106 g mol-1 ), melting point (124 °C), and crystallinity (41.8 %) are observed among PE samples thanks to the confined-space polymerization. The chain-walking behavior of surface tethered Ni catalysts is greatly limited by the confinement inside the nano-channels, leading to the formation of very low-branched PE materials (13.6/1000 C). Due to fixed supported catalytic topology and room temperature, the filaments are expected to be free of entanglement. This work signifies an important step towards the realization of a continuous mild catalytic-spinning (CATSPIN) process, where the polymer is directly synthesized into fiber shape at negligible chain branching and elegantly avoiding common limitations like thermal degradation or molecular entanglement.
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Affiliation(s)
- Ruikai Wu
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
- Department of Materials, ETH, Zurich, 8092, Zurich, Switzerland
| | - Tim M Lenz
- WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748, Garching, Germany
| | - Fayez Abdullah S Alfayez
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Ruohan Zhao
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Patrick Rupper
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Edith Perret
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Sandro Lehner
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Milijana Jovic
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Sabyasachi Gaan
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
| | - Bernhard Rieger
- WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748, Garching, Germany
| | - Manfred Heuberger
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014, St. Gallen, Switzerland
- Department of Materials, ETH, Zurich, 8092, Zurich, Switzerland
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2
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Zakaria M, Bhuiyan MAR, Hossain MS, Khan NMMU, Salam MA, Nakane K. Advances of polyolefins from fiber to nanofiber: fabrication and recent applications. DISCOVER NANO 2024; 19:24. [PMID: 38321325 PMCID: PMC10847085 DOI: 10.1186/s11671-023-03945-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/14/2023] [Indexed: 02/08/2024]
Abstract
Polyolefins are a widely accepted commodity polymer made from olefinic monomer consisting of carbon and hydrogen. This thermoplastic polymeric material is formed through reactive double bonds of olefins by the addition polymerization technique and it possesses a diverse range of unique features for a large variety of applications. Among the various types, polyethylene and polypropylene are the prominent classes of polyolefins that can be crafted and manipulated into diversified products for numerous applications. Research on polyolefins has boomed tremendously in recent times owing to the abundance of raw materials, low cost, lightweight, high chemical resistance, diverse functionalities, and outstanding physical characteristics. Polyolefins have also evidenced their potentiality as a fiber in micro to nanoscale and emerged as a fascinating material for widespread high-performance use. This review aims to provide an elucidation of the breakthroughs in polyolefins, namely as fibers, filaments, and yarns, and their applications in many domains such as medicine, body armor, and load-bearing industries. Moreover, the development of electrospun polyolefin nanofibers employing cutting-edge techniques and their prospective utilization in filtration, biomedical engineering, protective textiles, and lithium-ion batteries has been illustrated meticulously. Besides, this review delineates the challenges associated with the formation of polyolefin nanofiber using different techniques and critically analyzes overcoming the difficulties in forming functional nanofibers for the innovative field of applications.
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Affiliation(s)
- Mohammad Zakaria
- Department of Textile Engineering, Dhaka University of Engineering and Technology, Gazipur, 1707, Bangladesh.
| | - M A Rahman Bhuiyan
- Department of Textile Engineering, Dhaka University of Engineering and Technology, Gazipur, 1707, Bangladesh
| | - Md Shakawat Hossain
- Frontier Fiber Technology and Science, University of Fukui, Fukui, 910-8507, Japan
- Department of Textile Engineering, Khulna University of Engineering and Technology, Khulna, Bangladesh
| | - N M-Mofiz Uddin Khan
- Department of Chemistry, Dhaka University of Engineering and Technology, Gazipur, 1707, Bangladesh
| | - Md Abdus Salam
- Department of Textile Engineering, Dhaka University of Engineering and Technology, Gazipur, 1707, Bangladesh
- Department of Research and Development, Epyllion Fabrics Ltd., Epyllion Group, Gazipur, 1703, Bangladesh
| | - Koji Nakane
- Frontier Fiber Technology and Science, University of Fukui, Fukui, 910-8507, Japan
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3
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Zhu B, Liu K, Luo L, Zhang Z, Xiao Y, Sun M, Jie S, Wang WJ, Hu J, Shi S, Wang Q, Li BG, Liu P. Covalent Organic Framework-Supported Metallocene for Ethylene Polymerization. Chemistry 2023; 29:e202300913. [PMID: 37341127 DOI: 10.1002/chem.202300913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 06/22/2023]
Abstract
The loading of homogeneous catalysts with support can dramatically improve their performance in olefin polymerization. However, the challenge lies in the development of supported catalysts with well-defined pore structures and good compatibility to achieve high catalytic activity and product performance. Herein, we report the use of an emergent class of porous material-covalent organic framework material (COF) as a carrier to support metallocene catalyst-Cp2 ZrCl2 for ethylene polymerization. The COF-supported catalyst demonstrates a higher catalytic activity of 31.1×106 g mol-1 h-1 at 140 °C, compared with 11.2×106 g mol-1 h-1 for the homogenous one. The resulting polyethylene (PE) products possess higher weight-average molecular weight (Mw ) and narrower molecular weight distribution (Ð) after COF supporting, that is, Mw increases from 160 to 308 kDa and Ð drops from 3.3 to 2.2. The melting point (Tm ) is also increased by up to 5.2 °C. Moreover, the PE product possesses a characteristic filamentous microstructure and demonstrates an increased tensile strength from 19.0 to 30.7 MPa and elongation at break from 350 to 1400 % after catalyst loading. We believe that the use of COF carriers will facilitate the future development of supported catalysts for highly efficient olefin polymerization and high-performance polyolefins.
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Affiliation(s)
- Bangban Zhu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
| | - Kan Liu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
| | - Liqiong Luo
- National-Certified Enterprise Technology Center, Kingfa Science and Technology Co., Ltd., Guangzhou, 510663, P. R. China
| | - Ziyang Zhang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
- Institute of Zhejiang University - Quzhou, 99 Zheda Rd, Quzhou, 324000, P. R. China
| | - Yangke Xiao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
| | - Minghao Sun
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
| | - Suyun Jie
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
| | - Wen-Jun Wang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
- Institute of Zhejiang University - Quzhou, 99 Zheda Rd, Quzhou, 324000, P. R. China
| | - Jijiang Hu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
| | - Shengbin Shi
- Institute of Zhejiang University - Quzhou, 99 Zheda Rd, Quzhou, 324000, P. R. China
| | - Qingyue Wang
- Institute of Zhejiang University - Quzhou, 99 Zheda Rd, Quzhou, 324000, P. R. China
| | - Bo-Geng Li
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
| | - Pingwei Liu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering Zhejiang University, Hangzhou, 310027, P. R. China
- Institute of Zhejiang University - Quzhou, 99 Zheda Rd, Quzhou, 324000, P. R. China
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4
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Li W, Bie Z, Zhang C, Xu X, Wang S, Yang Y, Zhang Z, Yang X, Lim KH, Wang Q, Wang WJ, Li BG, Liu P. Combinatorial Synthesis of Covalent Organic Framework Particles with Hierarchical Pores and Their Catalytic Application. J Am Chem Soc 2023; 145:19283-19292. [PMID: 37585603 DOI: 10.1021/jacs.3c04995] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Precise tailoring of the aggregation state of covalent organic frameworks (COFs) to form a hierarchical porous structure is critical to their performance and applications. Here, we report a one-pot and one-step strategy of using dynamic combinatorial chemistry to construct imine-based hollow COFs containing meso- and macropores. It relies on a direct copolymerization of three or more monomers in the presence of two monofunctional competitors. The resulting particle products possess high crystallinity and hierarchical pores, including micropores around 0.93 nm, mesopores widely distributed in the range of 3.1-32 nm, and macropores at about 500 nm, while the specific surface area could be up to 748 m2·g-1, with non-micropores accounting for 60% of the specific surface area. The particles demonstrate unique advantages in the application as nanocarriers for in situ loading of Pd catalysts at 93.8% loading efficiency in the copolymerization of ethylene and carbon monoxide. The growth and assembly of the copolymer could thus be regulated to form flower-shaped particles, efficiently suppressing the fouling of the reactor. The copolymer's weight-average molecular weight and the melting temperature are also highly improved. Our method provides a facile way of fabricating COFs with hierarchical pores for advanced applications in catalysis.
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Affiliation(s)
- Wei Li
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Zhengwei Bie
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Chi Zhang
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Xintong Xu
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Song Wang
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Yuhao Yang
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Ziyang Zhang
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Xuan Yang
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Khak Ho Lim
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Qingyue Wang
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Wen-Jun Wang
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Bo-Geng Li
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Pingwei Liu
- State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
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5
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Chen S, Tian H, Mao J, Ma F, Zhang M, Chen F, Yang P. Preparation and application of chitosan-based medical electrospun nanofibers. Int J Biol Macromol 2023; 226:410-422. [PMID: 36502949 DOI: 10.1016/j.ijbiomac.2022.12.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 11/26/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022]
Abstract
Chitosan is a kind of polysaccharide cationic polymer, which has excellent biocompatibility, biodegradability and biological activity. In recent years, chitosan has been widely used as medical materials because of its non-toxicity, non-immunogenicity and rich sources. This paper reviews chitosan chemistry, the basic principles and influence of electrospinning technology, the blending of chitosan with polyethylene oxide, polyvinyl alcohol, polycaprolactone, polylactic acid, protein, polysaccharide and other polymer materials, the blending of chitosan with oxides, metals, carbon-based and other inorganic substances for electrospinning, the application of chitosan electrospinning nanofibers in medical field and its mechanism in clinical application. In order to provide reference for the in-depth study of electrospinning technology in the field of medical and health.
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Affiliation(s)
- Shujie Chen
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Haoran Tian
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Jinlong Mao
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.
| | - Feng Ma
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Mengtian Zhang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Feixiang Chen
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Pengfei Yang
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
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6
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Zhang Z, Kang X, Jiang Y, Cai Z, Li S, Cui D. Access to Disentangled Ultrahigh Molecular Weight Polyethylene via a Binuclear Synergic Effect. Angew Chem Int Ed Engl 2023; 62:e202215582. [PMID: 36418237 DOI: 10.1002/anie.202215582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022]
Abstract
Disentangled ultrahigh molecular weight polyethylene (dis-UHMWPE) has excellent processability but can be achieved under extreme conditions. Herein, we report ethylene polymerization with the binuclear half-sandwich scandium complexes C1-Sc2 and C2-Sc2 to afford UHMWPE. C1-Sc2 bearing a short linker shows higher activity and gives higher molecular weight PEs than C2-Sc2 containing a flexible spacer and the mononuclear Sc1 . Strikingly, all UHMWPEs isolated from C1-Sc2 under broad temperature range (25-120 °C) and wide ethylene pressures (2-13 bar) feature very low degree of entanglement as proved by rheological test, DSC annealing study and SEM. These dis-UHMWPEs are facilely mediated solid-state-process at 130 °C and their tensile strength and modulus reach up to 149.2 MPa and 1.5 GPa, respectively. DFT simulations reveal that the formation of dis-UHMWPE is attributed to the binuclear synergic effect and the agostic interaction between the active center and the growing chain.
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Affiliation(s)
- Zhen Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,Department of Materials Science and Engineering, Jilin University, 130022, Changchun, China
| | - Xiaohui Kang
- College of Pharmacy, Dalian Medical University, 116044, Dalian, China
| | - Yang Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
| | - Zhongyi Cai
- Department of Materials Science and Engineering, Jilin University, 130022, Changchun, China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
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7
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Mijangos C, Martin J. Polymerization within Nanoporous Anodized Alumina Oxide Templates (AAO): A Critical Survey. Polymers (Basel) 2023; 15:polym15030525. [PMID: 36771824 PMCID: PMC9919978 DOI: 10.3390/polym15030525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/21/2023] Open
Abstract
In the last few years, the polymerization of monomers within the nanocavities of porous materials has been thoroughly studied and developed, allowing for the synthesis of polymers with tailored morphologies, chemical architectures and functionalities. This is thus a subject of paramount scientific and technological relevance, which, however, has not previously been analyzed from a general perspective. The present overview reports the state of the art on polymerization reactions in spatial confinement within porous materials, focusing on the use of anodized aluminum oxide (AAO) templates. It includes the description of the AAO templates used as nanoreactors. The polymerization reactions are categorized based on the polymerization mechanism. Amongst others, this includes electrochemical polymerization, free radical polymerization, step polymerization and atom transfer radical polymerization (ATRP). For each polymerization mechanism, a further subdivision is made based on the nature of the monomer used. Other aspects of "in situ" polymerization reactions in restricted AAO geometries include: conversion monitoring, kinetic studies, modeling and polymer characterization. In addition to the description of the polymerization process itself, the use of polymer materials derived from polymerization in AAO templates in nanotechnology applications, is also highlighted. Finally, the review is concluded with a general discussion outlining the challenges that remain in the field.
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Affiliation(s)
- Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
- Donostia International Physics Center, DIPC, Paseo de Manuel Lardizabal 4, 20018 Donostia-San Sebastian, Spain
- POLYMAT, University of the Basque Country UPV/EHU, Avenida Tolosa 72, 20018 Donostia-San Sebastian, Spain
- Correspondence:
| | - Jaime Martin
- POLYMAT, University of the Basque Country UPV/EHU, Avenida Tolosa 72, 20018 Donostia-San Sebastian, Spain
- Grupo de Polímeros, Centro de Investigacións Tecnolóxicas (CIT), Universidade da Coruña, 15471 Ferrol, Spain
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Chen S, Chen W, Ren Y, Sun J, Wang J, Yang Y. Molecular Dynamics Simulation of the Nascent Polyethylene Crystallization in Confined Space: Nucleation and Lamella Orientation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Siyu Chen
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Wei Chen
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Ying Ren
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jingyuan Sun
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jingdai Wang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
- State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yongrong Yang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
- State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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9
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Díez-Rodríguez TM, Blázquez-Blázquez E, Antunes NLC, Ribeiro MR, Pérez E, Cerrada ML. Nanocomposites of PCL and SBA-15 Particles Prepared by Extrusion: Structural Characteristics, Confinement of PCL Chains within SBA-15 Nanometric Channels and Mechanical Behavior. Polymers (Basel) 2021; 14:129. [PMID: 35012150 PMCID: PMC8747316 DOI: 10.3390/polym14010129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/17/2021] [Accepted: 12/21/2021] [Indexed: 11/17/2022] Open
Abstract
A study of different nanocomposites based on poly(ε-caprolactone) (PCL) and mesoporous SBA-15 silica that were prepared by melt extrusion was carried out by analyzing the possible effect of this filler on the crystalline details of PCL, on its mechanical behavior, and on the eventual observation of the confinement of the polymeric chains within the hollow nanometric silica channels. Thus, simultaneous Small-Angle and Wide-Angle X-ray Scattering (SAXS/WAXS) synchrotron experiments at variable temperature were performed on these PCL nanocomposites with different mesoporous silica contents. The importance of the morphological and structural features was assessed by the changes that were observed during the mechanical response of the final materials, which determined that the presence of mesoporous particles leads to a noticeable reinforcing effect.
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Affiliation(s)
- Tamara M Díez-Rodríguez
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Enrique Blázquez-Blázquez
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Nadine L C Antunes
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - M Rosário Ribeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Ernesto Pérez
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - María L Cerrada
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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10
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TiCl4/MgCl2/MCM-41 Bi-Supported Ziegler–Natta Catalyst: Effects of Catalyst Composition on Ethylene/1-Hexene Copolymerization. Catalysts 2021. [DOI: 10.3390/catal11121535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
TiCl4/MgCl2/MCM-41 type bi-supported Ziegler-Natta catalysts with different MgCl2/MCM-41 ratios were synthesized by adsorbing TiCl4 onto MgCl2 crystallites anchored in mesopores of MCM-41 (mesoporous silica with 3.4 nm pore size). Ethylene/1-hexene copolymerization with the catalysts was conducted at different 1-hexene concentrations and ethylene pressures. MgCl2/MCM-41 composite supports and the catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption analysis (BET), and elemental analysis. The copolymers were fractionated by extraction with boiling n-heptane, and comonomer contents of the fractions were determined. Under 4 bar ethylene pressure, the bi-supported catalysts showed higher activity and a stronger comonomer activation effect than the TiCl4/MgCl2 catalyst. In comparison with the TiCl4/MgCl2 catalyst, the bi-supported catalysts produced much less copolymer fraction of low molecular weight and high 1-hexene content, meaning that the active center distribution of the catalyst was significantly changed by introducing MCM-41 in the support. The copolymer produced by the bi-supported catalysts showed similar melting temperature to that produced by TiCl4/MgCl2 under the same polymerization conditions. The space confinement effect of the mesopores of MCM-41 on the size and structure of MgCl2 crystallites is proposed as the main reason for the special active center distribution of the bi-supported catalysts.
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11
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Dai J, Yu C, Ye S, Li W, Kang X, Yang Y, Liang P, Ma Y, Huang Z, Jiang B, Wang J, Yang Y. The Intermittent Dormancy of Ethylene Polymerization with the Assistance of Nitrogen Microbubbles. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jincheng Dai
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
- Ningbo Key Laboratory of Specialty Polymers, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, People’s Republic of China
| | - Chenjie Yu
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315832, People’s Republic of China
| | - Shuyao Ye
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Wei Li
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
- Ningbo Key Laboratory of Specialty Polymers, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, People’s Republic of China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, People’s Republic of China
| | - Xue Kang
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315832, People’s Republic of China
| | - Yao Yang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Peng Liang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Yulong Ma
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Zhengliang Huang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Binbo Jiang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Jingdai Wang
- Ningbo Key Laboratory of Specialty Polymers, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, People’s Republic of China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, People’s Republic of China
| | - Yongrong Yang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
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12
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Tailored crystalline order of nascent polyethylene from metallocene supported on confined polystyrene. Catal Today 2021. [DOI: 10.1016/j.cattod.2019.12.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Cho K, Yang HS, Lee IH, Lee SM, Kim HJ, Son SU. Valorization of Click-Based Microporous Organic Polymer: Generation of Mesoionic Carbene–Rh Species for the Stereoselective Synthesis of Poly(arylacetylene)s. J Am Chem Soc 2021; 143:4100-4105. [DOI: 10.1021/jacs.0c13286] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyoungil Cho
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
| | - Hee-Seong Yang
- Department of Energy System Research, Ajou University, Suwon 16499, Korea
| | - In-Hwan Lee
- Department of Chemistry, Ajou University, Suwon 16499, Korea
| | | | - Hae Jin Kim
- Korea Basic Science Institute, Daejeon 34133, Korea
| | - Seung Uk Son
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
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14
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A Brief Overview of Recent Progress in Porous Silica as Catalyst Supports. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5030075] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Porous silica particles have shown applications in various technological fields including their use as catalyst supports in heterogeneous catalysis. The mesoporous silica particles have ordered porosity, high surface area, and good chemical stability. These interesting structural or textural properties make porous silica an attractive material for use as catalyst supports in various heterogeneous catalysis reactions. The colloidal nature of the porous silica particles is highly useful in catalytic applications as it guarantees better mass transfer properties and uniform distribution of the various metal or metal oxide nanocatalysts in solution. The catalysts show high activity, low degree of metal leaching, and ease in recycling when supported or immobilized on porous silica-based materials. In this overview, we have pointed out the importance of porous silica as catalyst supports. A variety of chemical reactions catalyzed by different catalysts loaded or embedded in porous silica supports are studied. The latest reports from the literature about the use of porous silica-based materials as catalyst supports are listed and analyzed. The new and continued trends are discussed with examples.
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15
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di Gregorio MC, Elsousou M, Wen Q, Shimon LJW, Brumfeld V, Houben L, Lahav M, van der Boom ME. Molecular cannibalism: Sacrificial materials as precursors for hollow and multidomain single crystals. Nat Commun 2021; 12:957. [PMID: 33574249 PMCID: PMC7878748 DOI: 10.1038/s41467-021-21076-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 01/07/2021] [Indexed: 01/30/2023] Open
Abstract
The coexistence of single-crystallinity with a multidomain morphology is a paradoxical phenomenon occurring in biomineralization. Translating such feature to synthetic materials is a highly challenging process in crystal engineering. We demonstrate the formation of metallo-organic single-crystals with a unique appearance: six-connected half-rods forming a hexagonal-like tube. These uniform objects are formed from unstable, monodomain crystals. The monodomain crystals dissolve from the inner regions, while material is anisotropically added to their shell, resulting in hollow, single-crystals. Regardless of the different morphologies and growth mechanism, the crystallographic structures of the mono- and multidomain crystals are nearly identical. The chiral crystals are formed from achiral components, and belong to a rare space group (P622). Sonication of the solvents generating radical species is essential for forming the multidomain single-crystals. This process reduces the concentration of the active metal salt. Our approach offers opportunities to generate a new class of crystals.
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Affiliation(s)
| | - Merna Elsousou
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Qiang Wen
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Linda J W Shimon
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, Israel
| | - Vlad Brumfeld
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, Israel
| | - Lothar Houben
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Lahav
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel.
| | - Milko E van der Boom
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel.
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16
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Wang K, Shen L, Zhou G. Controlled individual and partial polyethylene nanofibers with high Tm2 prepared by PPM-supported Cp 2TiCl 2 catalysts. NEW J CHEM 2021. [DOI: 10.1039/d1nj01378e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlled individual and partial nanofibrous polyethylenes with high second melting point (Tm2) were obtained through ethylene-confined polymerization using a porous polymer microsphere (PPM)-supported Cp2TiCl2 catalyst.
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Affiliation(s)
- Kui Wang
- Yancheng Institute of Technology
- School of Materials Science and Engineering
- Yancheng
- China
| | - Lu Shen
- Yancheng Institute of Technology
- School of Materials Science and Engineering
- Yancheng
- China
| | - Guangyuan Zhou
- Dalian Institute of Chemical Physics (DICP)
- Chinese Academy of Sciences (CAS)
- Dalian
- China
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17
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Xiao Y, Yang W, Lei J, Zhou G. Ethylene polymerization using diatomite as support for zirconocene dichloride/modified methylaluminoxane. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03229-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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19
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Xiao Y, Dai X, Wang K, Zhou G. High Melting Point of Linear, Spiral Polyethylene Nanofibers and Polyethylene Microspheres Obtained Through Confined Polymerization by a PPM-Supported Ziegler-Natta Catalyst. ChemistryOpen 2020; 9:1173-1180. [PMID: 33209565 PMCID: PMC7658954 DOI: 10.1002/open.202000290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/20/2020] [Indexed: 11/20/2022] Open
Abstract
In this work, different types of polyethylene (linear, spiral nanofibers and microspheres) were obtained via confined polymerization by a PPM-supported Ziegler-Natta catalyst. Firstly, the Ziegler-Natta catalyst was chemical bonded inside the porous polymer microspheres (PPMs) supports with different pore diameter and supports size through chemical reaction. Then slightly and highly confined polymerization occurred in the PPM-supported Ziegler-Natta catalysts. SEM results illustrated that the slightly confined polymerization was easy to obtain linear and spiral nanofibers, and the nanofibers were observed in polyethylene catalyzed by PPMs-1#/cat and PPMs-2#/cat with low pore diameter (about 23 nm). Furthermore, the highly confined polymerization produced polyethylene microspheres, which obtained through other PPM-supported Ziegler-Natta catalysts with high pore diameter. In addition, high second melting point (Tm2: up to 143.3 °C) is a unique property of the polyethylene obtained by the PPM-supported Ziegler-Natta catalyst after removing the residue through physical treatment. The high Tm2 was ascribed to low surface free energy (σe), which was owing to the entanglement of polyethylene polymerized in the PPMs supports with interconnected multi-modal pore structure.
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Affiliation(s)
- Yu Xiao
- State Key Laboratory of Advanced Power Transmission TechnologyGlobal Energy Interconnection Research InstituteNo.18 Binhe AvenueChangping DistrictBeijing102209P. R. China
| | - Xiying Dai
- State Key Laboratory of Advanced Power Transmission TechnologyGlobal Energy Interconnection Research InstituteNo.18 Binhe AvenueChangping DistrictBeijing102209P. R. China
| | - Kui Wang
- Key Laboratory of Polymer EcomaterialsChangchun Institute of Applied Chemistry (CIAC)Chinese Academy of Sciences (CAS)No. 5625 Renmin Rd.ChangchunJilin130022P. R. China
| | - Guangyuan Zhou
- Key Laboratory of Polymer EcomaterialsChangchun Institute of Applied Chemistry (CIAC)Chinese Academy of Sciences (CAS)No. 5625 Renmin Rd.ChangchunJilin130022P. R. China
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20
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Tian Q, Zhao H, Simon SL. Kinetic study of alkyl methacrylate polymerization in nanoporous confinement over a broad temperature range. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122868] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Aida T. On Supramolecular Polymerization: Interview with Takuzo Aida. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905445. [PMID: 31867791 DOI: 10.1002/adma.201905445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Prof. Takuzo Aida is one of the most visible materials chemists thanks to his many creative contributions to the broad field of supramolecular chemistry. Over the past two decades he has ingeniously utilized self-assembly across scales and between various components to access a breathtaking variety of complex materials with fascinating properties. For example, the Aida Lab has pioneered conducting "bucky gel" by dispersing carbon nanotubes in ionic liquids as well as "aqua materials", in which a tiny amount of additive renders water mechanically robust. From his personal insight he shares in this Interview, we can learn how his research evolved since his undergraduate studies. Moreover, he shares his vision on the importance of supramolecular polymers (Supra-Plastics) to realize a sustainable society.
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Affiliation(s)
- Takuzo Aida
- Deputy Director, Riken Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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22
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Tai Z, Wei J, Zhou J, Liao Y, Wu C, Shang Y, Wang B, Wang Q. Water-mediated crystallohydrate-polymer composite as a phase-change electrolyte. Nat Commun 2020; 11:1843. [PMID: 32296049 PMCID: PMC7160156 DOI: 10.1038/s41467-020-15415-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 03/06/2020] [Indexed: 12/03/2022] Open
Abstract
With the world's focus on wearable electronics, the scientific community has anticipated the plasticine-like processability of electrolytes and electrodes. A bioinspired composite of polymer and phase-changing salt with the similar bonding structure to that of natural bones is a suitable electrolyte candidate. Here, we report a water-mediated composite electrolyte by simple thermal mixing of crystallohydrate and polymer. The processable phase-change composites have significantly high mechanical strength and high ionic mobility. The wide operating voltage range and high faradic capacity of the composite both contribute to the maximum energy density. The convenient assembly and high thermal-shock resistance of our device are due to the mechanical interlocking and endothermic phase-change effect. As of now, no other non-liquid electrolytes, including those made from ceramics, polymers, or hydrogels, possess all of these features. Our work provides a universal strategy to fabricate various thermally manageable devices via phase-change electrolytes.
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Affiliation(s)
- Ziyang Tai
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, China
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Junjie Wei
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Jie Zhou
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Yue Liao
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Chu Wu
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Yinghui Shang
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Baofeng Wang
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, China.
| | - Qigang Wang
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China.
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23
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Han JJ, Lee SB, Choi KY. Geometrically Constrained Polymerization of Styrene Over Heterogeneous Catalyst Layer in Silica Nanotube Reactors. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Joong Jin Han
- Department of Chemical and Biomolecular EngineeringUniversity of Maryland College Park Maryland 20742
| | - Sang Bok Lee
- Department of Chemistry and BiochemistryUniversity of Maryland College Park Maryland 20742
- Maryland NanocenterUniversity of Maryland College Park Maryland 20742
| | - Kyu Yong Choi
- Department of Chemical and Biomolecular EngineeringUniversity of Maryland College Park Maryland 20742
- Maryland NanocenterUniversity of Maryland College Park Maryland 20742
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24
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Organically Modified Montmorillonite as Nanoreactor to Improve the Grafting Degree of Maleic Anhydride onto Polypropylene. J CHEM-NY 2020. [DOI: 10.1155/2020/8151290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The application of an organically modified montmorillonite nanoreactor in the reactive extrusion process of the free radical grafting of maleic anhydride onto polypropylene (PP) can increase the MAH grafting degree on the PP. The mechanism of grafting was studied by using transmission electron microscopy and high temperature gel permeation chromatography. It was found that both the strong interactions between MAH and MMT surface and the encapsulation effect of active species confined in o-MMT improved the grafting degree.
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25
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Zhou Y, Zhang R, Ren H, He X, Liu B, Zhao N, Liu B. Ethylene polymerization over novel organic magnesium based V/Ti bimetallic Ziegler-Natta Catalysts. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2019.121066] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Kong L, Guo Y, Wang X, Zhang X. Double-walled hierarchical porous silica nanotubes loaded Au nanoparticles in the interlayer as a high-performance catalyst. NANOTECHNOLOGY 2020; 31:015701. [PMID: 31514176 DOI: 10.1088/1361-6528/ab4401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Double-walled hierarchical porous silica nanotubes (NTs) loaded Au nanoparticles (Au NPs) in the interlayer (SiO2@Au@SiO2 NTs) are synthesized by using tetraethoxysilane as silica source and hollow polydivinylbenzene (PDVB) nanowires as the sacrificial templates. The mesopores on the walls and the hollow structure of NTs (macropores) construct the hierarchical porous structure. The SiO2@Au@SiO2 NTs possess a high surface area of 405 m2 g-1 and an average pores size of 4.7 nm. The double-walled structure protects the Au NPs from environmental attacks, which shows an excellent catalytic activity even after reusing 10 times. Meanwhile, the hierarchical porous structure shows excellent catalytic ability and allows the catalytic reaction process to be completed within 5 min. This result indicates that double-walled silica NTs have vast potential in catalysis application due to the special structure.
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Affiliation(s)
- Lingbo Kong
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, People's Republic of China
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27
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Jafariyeh‐Yazdi E, Tavakoli A, Abbasi F, Parnian MJ, Heidari A. Bi‐supported Ziegler–Natta TiCl
4
/MCM‐41/MgCl
2
(ethoxide type) catalyst preparation and comprehensive investigations of produced polyethylene characteristics. J Appl Polym Sci 2019. [DOI: 10.1002/app.48553] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Elchin Jafariyeh‐Yazdi
- Department of Chemical EngineeringSahand University of Technology Tabriz 51335‐1996 Iran
| | - Akram Tavakoli
- Department of Chemical EngineeringSahand University of Technology Tabriz 51335‐1996 Iran
| | - Farhang Abbasi
- Institute of Polymeric Materials and Faculty of Polymer EngineeringSahand University of Technology Tabriz Iran
| | | | - Amin Heidari
- Institute of Polymeric Materials and Faculty of Polymer EngineeringSahand University of Technology Tabriz Iran
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28
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Zhang X, Wu Y, Li X, Meng X, Shi H, Wu Z, Zhang J. Preparation of mesoporous silica from coal slag and its metal ion adsorption behavior. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0261-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Rivera-Torrente M, Pletcher PD, Jongkind MK, Nikolopoulos N, Weckhuysen BM. Ethylene Polymerization over Metal–Organic Framework Crystallites and the Influence of Linkers on Their Fracturing Process. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00150] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Miguel Rivera-Torrente
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Paul D. Pletcher
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Maarten K. Jongkind
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Nikolaos Nikolopoulos
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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30
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Matsumoto A. Stereospecific Polymerization of 1,3-Diene Monomers in the Crystalline State. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.3184/007967401103165190] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This article deals with the features and mechanism of the polymerization of 1,3-diene monomers in the crystalline state. First, I refer to the characteristics and classification of solid-state polymerization, including the definition of several key terms such as ‘topochemical reaction’ and ‘crystal engineering’. The topochemical polymerization of muconic and sorbic acid derivatives, which are 1,3-diene monomers with one or two carboxylates at each end of a butadiene or pentadiene moiety, is then described. The polymerization behaviour and reactivity are discussed, as well as the structure and properties of the polymer crystals obtained as the polymerization product. The relationship between the crystal structure and the reactivity is discussed on the basis of the concept of crystal engineering, which is a useful method to design the reactivity, structure, and properties of organic solids. In the final part, the stereochemical control of polymers as well as the application of the polymer crystals obtained by topochemical polymerization are described. The polymer crystals are capable of repeated and reversible intercalation, which may allow the design of new organic solids for applications such as molecular recognition, separation, and catalysis and extend the range and practical utility of current intercalation compounds.
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Affiliation(s)
- Akikazu Matsumoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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31
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Zhang X, Liu H, Jiang L. Wettability and Applications of Nanochannels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1804508. [PMID: 30345614 DOI: 10.1002/adma.201804508] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 07/30/2018] [Indexed: 05/27/2023]
Abstract
Wettability in nanochannels is of great importance for understanding many challenging problems in interface chemistry and fluid mechanics, and presents versatile applications including mass transport, catalysis, chemical reaction, nanofabrication, batteries, and separation. Recently, both molecular dynamic simulations and experimental measurements have been employed to study wettability in nanochannels. Here, wettability in three types of nanochannels comprising 1D nanochannels, 2D nanochannels, and 3D nanochannels is summarized both theoretically and experimentally. The proposed concept of "quantum-confined superfluid" for ultrafast mass transport in nanochannels is first introduced, and the mostly studied 1D nanochannels are reviewed from molecular simulation to water wettability, followed by reversible switching of water wettability via external stimuli (temperature and voltage). Liquid transport and two confinement strategies in nanochannels of melt wetting and liquid wetting are also included. Then, molecular simulation, water wettability, liquid transport, and confinement in nanochannels are introduced for 2D nanochannels and 3D nanochannels, respectively. Based on the wettability in nanochannels, broad applications of various nanochannels are presented. Finally, the perspective for future challenges in the wettability and applications of nanochannels is discussed.
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Affiliation(s)
- Xiqi Zhang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hongliang Liu
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
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32
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Yano K, Itoh Y, Araoka F, Watanabe G, Hikima T, Aida T. Nematic-to-columnar mesophase transition by in situ supramolecular polymerization. Science 2019; 363:161-165. [DOI: 10.1126/science.aan1019] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 09/12/2017] [Accepted: 11/23/2018] [Indexed: 11/02/2022]
Abstract
Disk- and rod-shaped molecules are incompatible in coassembly, as the former tend to stack one-dimensionally whereas the latter tend to align in parallel. Because this type of incompatibility can be more pronounced in condensed phases, different-shaped molecules generally exclude one another. We report that supramolecular polymerization of a disk-shaped chiral monomer in nematic liquid crystals comprising rod-shaped molecules results in order-increasing mesophase transition into a single mesophase with a core-shell columnar geometry. This liquid crystalline material responds quickly to an applied electric field, resulting in unidirectional columnar ordering. Moreover, it can be modularly customized to be optoelectrically responsive simply by using a photoisomerizable rod-shaped module. The modular strategy allows for cooperative integration of different functions into elaborate dynamic architectures.
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33
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Barranco-García R, López-Majada JM, Lorenzo V, Gómez-Elvira JM, Pérez E, Cerrada ML. Confinement of iPP chains in the interior of SBA-15 mesostructure ascertained by gas transport properties in iPP-SBA-15 nanocomposites prepared by extrusion. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.10.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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34
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Hees T, Zhong F, Stürzel M, Mülhaupt R. Tailoring Hydrocarbon Polymers and All-Hydrocarbon Composites for Circular Economy. Macromol Rapid Commun 2018; 40:e1800608. [PMID: 30417498 DOI: 10.1002/marc.201800608] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/03/2018] [Indexed: 11/08/2022]
Abstract
The world population will rapidly grow from 7 to 9 billion by 2050 and this will parallel a surging annual plastics consumption from today's 350 million tons to well beyond 1 billion tons. The switch from a linear economy with its throwaway culture to a circular economy with efficient reuse of waste plastics is therefore mandatory. Hydrocarbon polymers, accounting for more than half the world's plastics production, enable closed-loop recycling and effective product-stewardship systems. High-molar-mass hydrocarbons serve as highly versatile, cost-, resource-, eco- and energy-efficient, durable lightweight materials produced by solvent-free, environmentally benign catalytic olefin polymerization. Nanophase separation and alignment of unentangled hydrocarbon polymers afford 100% recyclable self-reinforcing all-hydrocarbon composites without requiring the addition of either alien fibers or hazardous nanoparticles. Recycling of durable hydrocarbons is far superior to biodegradation. The facile thermal degradation enables liquefaction and quantitative recovery of low molar mass hydrocarbon oil and gas. Teamed up with biomass-to-liquid and carbon dioxide-to-fuel conversions, powered by renewable energy, waste hydrocarbons serve as renewable hydrocarbon feedstocks for the synthesis of high molar mass hydrocarbon materials. Herein, an overview is given on how innovations in catalyst and process technology enable tailoring of advanced recyclable hydrocarbon materials meeting the needs of sustainable development and a circular economy.
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Affiliation(s)
- Timo Hees
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
| | - Fan Zhong
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
| | - Markus Stürzel
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
| | - Rolf Mülhaupt
- Freiburg Materials Research Center of the Albert-Ludwigs University Freiburg, Stefan-Meier Straße 21, D-79104, Freiburg, Germany.,Institute for Macromolecular Chemistry of the Albert-Ludwigs-University Freiburg, Stefan-Meier-Straße 31, D-79104, Freiburg, Germany
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35
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Wang K, Lei J, Nie H, Shen L, Chen P, Zhou G. Effects of Interconnected Polymer Nanopores Leading to Different Degrees of Confined Polymerization. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kui Wang
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China
| | - Jinhua Lei
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Heran Nie
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Lu Shen
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China
| | - Peng Chen
- Ningbo Key Laboratory of Polymer Materials; Key Laboratory of Marine Materials and Related Technologies; Zhejiang Key Laboratory of Marine Materials and Protective Technologies; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China
| | - Guangyuan Zhou
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
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36
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Liu Y, Huang S, Tan J, Wang Z, Jiang Z, Zhang H. PEEK/diatomite composites by in situ
polymerization: Synthesis, characterization and fundamental properties. J Appl Polym Sci 2018. [DOI: 10.1002/app.46983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yifan Liu
- Alan G. MacDiarmid Institute, Jilin University; 2699 Qianjin Street, Changchun 130012 People's Republic of China
| | - Sa Huang
- Alan G. MacDiarmid Institute, Jilin University; 2699 Qianjin Street, Changchun 130012 People's Republic of China
| | - Jie Tan
- Alan G. MacDiarmid Institute, Jilin University; 2699 Qianjin Street, Changchun 130012 People's Republic of China
| | - Zhaoyang Wang
- Alan G. MacDiarmid Institute, Jilin University; 2699 Qianjin Street, Changchun 130012 People's Republic of China
| | - Zilong Jiang
- Alan G. MacDiarmid Institute, Jilin University; 2699 Qianjin Street, Changchun 130012 People's Republic of China
| | - Haibo Zhang
- Alan G. MacDiarmid Institute, Jilin University; 2699 Qianjin Street, Changchun 130012 People's Republic of China
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37
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Hui L, Yue Z, Yang H, Chen T, Li W. Influence of the Fragmentation of POSS-Modified Heterogeneous Catalyst on the Formation of Chain Entanglements. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b01641] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lei Hui
- Institute of Polymer Science and Engineering, Department of Material Science and Chemical Engineering, Ningbo University, Zhejiang 315211, P. R. China
| | - Zhen Yue
- Institute of Polymer Science and Engineering, Department of Material Science and Chemical Engineering, Ningbo University, Zhejiang 315211, P. R. China
| | - Huaqin Yang
- Institute of Polymer Science and Engineering, Department of Material Science and Chemical Engineering, Ningbo University, Zhejiang 315211, P. R. China
| | - Tao Chen
- Institute of Polymer Science and Engineering, Department of Material Science and Chemical Engineering, Ningbo University, Zhejiang 315211, P. R. China
| | - Wei Li
- Institute of Polymer Science and Engineering, Department of Material Science and Chemical Engineering, Ningbo University, Zhejiang 315211, P. R. China
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38
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Bando Y, Chammingkwan P, Terano M, Taniike T. Synthesis of Ultrahigh Molecular Weight Polyethylene Using MgO/MgCl
2
/TiCl
4
Core–Shell Catalysts. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yusuke Bando
- Graduate School of Advanced Science and TechnologyJapan Advanced Institute of Science and Technology 1‐1 Asahidai Nomi Ishikawa 923‐1292 Japan
| | - Patchanee Chammingkwan
- Graduate School of Advanced Science and TechnologyJapan Advanced Institute of Science and Technology 1‐1 Asahidai Nomi Ishikawa 923‐1292 Japan
| | - Minoru Terano
- Graduate School of Advanced Science and TechnologyJapan Advanced Institute of Science and Technology 1‐1 Asahidai Nomi Ishikawa 923‐1292 Japan
| | - Toshiaki Taniike
- Graduate School of Advanced Science and TechnologyJapan Advanced Institute of Science and Technology 1‐1 Asahidai Nomi Ishikawa 923‐1292 Japan
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39
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Porous Organic Polymers-Supported Metallocene Catalysts for Ethylene/1-Hexene Copolymerization. Catalysts 2018. [DOI: 10.3390/catal8040146] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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40
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Li W, Hui L, Xue B, Dong C, Chen Y, Hou L, Jiang B, Wang J, Yang Y. Facile high-temperature synthesis of weakly entangled polyethylene using a highly activated Ziegler-Natta catalyst. J Catal 2018. [DOI: 10.1016/j.jcat.2018.01.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Le Roux E, Liang Y, Anwander R. Silica-Grafted Neodymium Catalysts for the Production of Ultrahigh-Molecular-Weight cis
-1,4-Polyisoprene. ChemCatChem 2018. [DOI: 10.1002/cctc.201701830] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Erwan Le Roux
- Kjemisk Institutt; Universitetet i Bergen; Allégaten 41 5007 Bergen Norway
| | - Yucang Liang
- Institut für Anorganische Chemie; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie; Eberhard Karls Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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42
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Jian S, Zhu J, Jiang S, Chen S, Fang H, Song Y, Duan G, Zhang Y, Hou H. Nanofibers with diameter below one nanometer from electrospinning. RSC Adv 2018; 8:4794-4802. [PMID: 35539515 PMCID: PMC9077775 DOI: 10.1039/c7ra13444d] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 01/20/2018] [Indexed: 01/02/2023] Open
Abstract
Sub-nanometer materials have received wide attention due to their unique properties in recent years. Most studies focus on the preparation and properties investigation of the inorganic sub-nanometer materials, while there are few reports on organic especially polymeric sub-nanometer materials such as sub-nanometer fiber due to the obstacles with respect to fabricating such small nanofibers. In this work we prepare PAA nanofibers with diameters ranging from hundreds of nanometers down to sub-nanometer via electrospinning from a polyamic acid (PAA) with ultrahigh molecular weight. The morphologies and size of the electrospun ultrathin nanofibers are characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). AFM images combined with theoretic calculations show that sub-nanometer fiber of approximate 0.17-0.63 nm only containing one molecular chain was generated via electrospinning from ultra-dilute PAA solutions for the first time. These quite small sub-nanometer fibers would open a new area of electrospinning and provide further explorations on the production and application of electrospun sub-nanometer fibers with single molecular chains.
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Affiliation(s)
- Shaoju Jian
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University Nanchang 330022 China
- College of Ecology and Resources Engineering, Wuyi University Wuyishan 354300 China
| | - Jia Zhu
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University Nanchang 330022 China
| | - Shaohua Jiang
- College of Materials Science and Engineering, Nanjing Forestry University Nanjing 210037 China
| | - Shuiliang Chen
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University Nanchang 330022 China
| | - Hong Fang
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University Nanchang 330022 China
| | - Yonghai Song
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University Nanchang 330022 China
| | - Gaigai Duan
- College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China
| | - Yongfan Zhang
- Department of Chemistry, Fuzhou University Fuzhou 350108 China
| | - Haoqing Hou
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University Nanchang 330022 China
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43
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Yu F, Yang Y, He D, Gong D, Chen ZR. Pressure-Sensitive Supported FI Catalyst for the Precise Synthesis of Uni- and Bimodal Polyethylene. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00083] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Feng Yu
- Department
of Polymer Science and Engineering, School of Material Science and Chemical
Engineering, Ningbo University, Ningbo 315211, PR China
| | - Yanqiong Yang
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
| | - Dengfeng He
- Department
of Polymer Science and Engineering, School of Material Science and Chemical
Engineering, Ningbo University, Ningbo 315211, PR China
| | - Dirong Gong
- Department
of Polymer Science and Engineering, School of Material Science and Chemical
Engineering, Ningbo University, Ningbo 315211, PR China
| | - Zhong-Ren Chen
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen 518055, PR China
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44
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Chen M, Zhou H, Zhou L, Zhang F. Confined polymerization: ARGET ATRP of MMA in the nanopores of modified SBA-15. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.02.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Liu S, Zhang Y, Han Y, Feng G, Gao F, Wang H, Qiu P. Selective Ethylene Oligomerization with Chromium-Based Metal–Organic Framework MIL-100 Evacuated under Different Temperatures. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00834] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suyan Liu
- The
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, P. R. China
- College
of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, P. R. China
| | - Ying Zhang
- The
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, P. R. China
- Department
of Materials Science and Engineering, China University of Petroleum, Beijing 102249, P. R. China
| | - Yang Han
- Department
of Materials Science and Engineering, China University of Petroleum, Beijing 102249, P. R. China
| | - Guangliang Feng
- Department
of Materials Science and Engineering, China University of Petroleum, Beijing 102249, P. R. China
| | - Fei Gao
- Department
of Materials Science and Engineering, China University of Petroleum, Beijing 102249, P. R. China
| | - Hui Wang
- Department
of Materials Science and Engineering, China University of Petroleum, Beijing 102249, P. R. China
| | - Ping Qiu
- Department
of Materials Science and Engineering, China University of Petroleum, Beijing 102249, P. R. China
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46
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Yu W, Shi J, Wang L, Chen X, Min M, Wang L, Liu Y. The structure and mechanical property of silane-grafted-polyethylene/SiO 2 nanocomposite fiber rope. AQUACULTURE AND FISHERIES 2017. [DOI: 10.1016/j.aaf.2017.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Umegaki T, Ogawa R, Toyama N, Ohki S, Tansho M, Shimizu T, Kojima Y. The influence of the pore structure of hollow silica–alumina composite spheres on their activity for hydrolytic dehydrogenation of ammonia borane. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00338b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hollow silica–alumina composite spheres with a homogeneous pore structure showed unexpected high activity for hydrolysis of ammonia borane.
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Affiliation(s)
- Tetsuo Umegaki
- College of Science & Technology
- Nihon University
- Tokyo
- Japan
| | - Ryota Ogawa
- College of Science & Technology
- Nihon University
- Tokyo
- Japan
| | - Naoki Toyama
- College of Science & Technology
- Nihon University
- Tokyo
- Japan
| | - Shinobu Ohki
- National Institute for Materials Science
- Tsukuba, Ibaraki 305-0003
- Japan
| | - Masataka Tansho
- National Institute for Materials Science
- Tsukuba, Ibaraki 305-0003
- Japan
| | - Tadashi Shimizu
- National Institute for Materials Science
- Tsukuba, Ibaraki 305-0003
- Japan
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48
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Zhou A, Zhang Y, Shi Y, Xu Q. Integrated synthesis of metallocene@support catalysts based on glyphosate and its zirconium derivatives. RSC Adv 2017. [DOI: 10.1039/c7ra11089h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three new kinds of composite metallocene catalyst, Cp2Zr@Gly, Cp2Zr@ZrGp and Cp2Zr@EXZrGP, were synthesized and their catalytic activity in ethylene polymerization was studied.
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Affiliation(s)
- Annan Zhou
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Yuejuan Zhang
- Beijing Vocational College of Agriculture
- Beijing 100012
- P. R. China
| | - Yasai Shi
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Qinghong Xu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
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49
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Fita P, Grill L, Listkowski A, Piwoński H, Gawinkowski S, Pszona M, Sepioł J, Mengesha E, Kumagai T, Waluk J. Spectroscopic and microscopic investigations of tautomerization in porphycenes: condensed phases, supersonic jets, and single molecule studies. Phys Chem Chem Phys 2017; 19:4921-4937. [DOI: 10.1039/c6cp07955e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Tautomerization of porphycene, coherent in supersonic jets and a rate process in solutions, can be controlled for single molecules on surfaces.
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Affiliation(s)
- P. Fita
- Institute of Experimental Physics
- Faculty of Physics
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - L. Grill
- Department of Physical Chemistry
- University of Graz
- 8010 Graz
- Austria
| | - A. Listkowski
- Faculty of Mathematics and Natural Sciences
- College of Science
- Cardinal Stefan Wyszyński University
- 01-815 Warsaw
- Poland
| | - H. Piwoński
- Institute of Physical Chemistry
- Polish Academy of Sciences
- Warsaw
- Poland
| | - S. Gawinkowski
- Institute of Physical Chemistry
- Polish Academy of Sciences
- Warsaw
- Poland
| | - M. Pszona
- Institute of Physical Chemistry
- Polish Academy of Sciences
- Warsaw
- Poland
| | - J. Sepioł
- Institute of Physical Chemistry
- Polish Academy of Sciences
- Warsaw
- Poland
| | - E. Mengesha
- Institute of Physical Chemistry
- Polish Academy of Sciences
- Warsaw
- Poland
| | - T. Kumagai
- Department of Physical Chemistry
- Fritz-Haber Institute of the Max-Planck Society
- 14195 Berlin
- Germany
| | - J. Waluk
- Faculty of Mathematics and Natural Sciences
- College of Science
- Cardinal Stefan Wyszyński University
- 01-815 Warsaw
- Poland
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50
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Liu G, Gu P, Nie L, Zhang Q. Simultaneous crystallization of an in situ formed conjugated polymer and inorganic matrix for structure solving. Chem Commun (Camb) 2017; 53:12365-12368. [DOI: 10.1039/c7cc06620a] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have, for the first time, reported the crystal structure of a conjugated polymer–inorganic composite by encapsulating conjugated polymer chains into a bromoplumbate matrix.
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Affiliation(s)
- Guangfeng Liu
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
| | - Peiyang Gu
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
| | - Lina Nie
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
| | - Qichun Zhang
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences
- Nanyang Technological University
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