1
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Tian Y, Qi Y, Chen S, Qiao Z, Han H, Chen Z, Wang H, Zhang Y, Chen H, Wang L, Gong X, Chen Y. Hydrogen bond recombination regulated by strongly electronegative functional groups in demulsifiers for efficient separation of oil-water emulsions. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132525. [PMID: 37716267 DOI: 10.1016/j.jhazmat.2023.132525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/23/2023] [Accepted: 09/09/2023] [Indexed: 09/18/2023]
Abstract
Tight oil extraction and offshore oil spills generate large amounts of oil-water emulsions, causing serious soil and marine pollution. In such oil-water emulsions, the resin molecules are bound by π-π stacking and bind to interfacial water molecules via hydrogen bonds, which impede the aggregation between water droplets and thereby the separation of the emulsion. In this study, strongly electronegative oxygen atoms (in ethylene oxide, propylene oxide, esters, and hydroxyl groups) were introduced through poly(propylene glycol)-block-polyether and esterification with acrylic acid to attract negative charges in order to form electron-rich regions and enhance interfacial hydrogen bond recombination. The potential distribution in the demulsifier molecules and their space occupancy were regulated by the polymerization reaction to destroy the π-π stacking interaction between resin molecules. The results show that the binding energies (binding free energy and hydrogen bonding energy) of oxygen-containing demulsifier molecules with water molecules were higher than those of resin molecules with water molecules, resulting in the fission of the hydrogen bonds between resin and water molecules. The introduction of demulsifier molecules that occupied large interfacial space reduced the binding energy between resin molecules from -2176.06 to -110.00 kJ·mol-1. Noteworthy, the binding energy between demulsifier molecules and resin molecules was -1076.36 kJ·mol-1 lower than that between resin molecules (-110.00 kJ·mol-1), indicating the adsorption of the surrounding interfacial resin molecules by the demulsifier molecules and destruction of the π-π stacking between them, thus favoring the collapse of the interfacial structure of the oil-water emulsion and achieving its separation. This study provides important theoretical support for the treatment of oil-contaminated soil and offshore oil spill pollution.
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Affiliation(s)
- Yuxuan Tian
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China
| | - Yaming Qi
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China; óDesign branch of PetroChina (Xinjiang) Petroleum Engineering Co., Ltd, Petro China, 834000 Kelamayi, Xinjiang, PR China
| | - Sijia Chen
- PetroChina Petrochemical Research Institute, Daqing Chemical Engineering Research Center, Daqing 163714, PR China
| | - Zhihua Qiao
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387 China
| | - Hongjing Han
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China.
| | - Zherui Chen
- School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, PR China
| | - Haiying Wang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China
| | - Yanan Zhang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China
| | - Huiying Chen
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China
| | - Leilei Wang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China
| | - Xuzhong Gong
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Yanguang Chen
- Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, PR China.
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2
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Wang C, Geng X, Chen J, Wang H, Wei Z, Huang B, Liu W, Wu X, Hu L, Su G, Lei J, Liu Z, He X. Multiple H-Bonding Cross-Linked Supramolecular Solid-Solid Phase Change Materials for Thermal Energy Storage and Management. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2309723. [PMID: 38091525 DOI: 10.1002/adma.202309723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/28/2023] [Indexed: 12/22/2023]
Abstract
Solid-solid phase change materials (SSPCMs) are considered among the most promising candidates for thermal energy storage and management. However, the application of SSPCMs is consistently hindered by the canonical trade-off between high TES capacity and mechanical robustness. In addition, they suffer from poor recyclability due to chemical cross-linking. Herein, a straightforward but effective strategy for fabricating supramolecular SSPCMs with high latent heat and mechanical strength is proposed. The supramolecular polymer employs multiple H-bonding interactions as robust physical cross-links. This enables SSPCM with a high enthalpy of phase transition (142.5 J g-1 ), strong mechanical strength (36.9 MPa), and sound shape stability (maintaining shape integrity at 120 °C) even with a high content of phase change component (97 wt%). When SSPCM is utilized to regulate the operating temperature of lithium-ion batteries, it significantly diminishes the battery working temperature by 23 °C at a discharge rate of 3 C. The robust thermal management capability enabled through solid-solid phase change provides practical opportunities for applications in fast discharging and high-power batteries. Overall, this study presents a feasible strategy for designing linear SSPCMs with high latent heat and exceptional mechanical strength for thermal management.
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Affiliation(s)
- Chenyang Wang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Xin Geng
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Jing Chen
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Hailong Wang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Zhengkai Wei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
| | - Bingxuan Huang
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Wei Liu
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Xiaodong Wu
- School of Mechanical Engineering, Sichuan University, Chengdu, 610065, China
| | - Linyu Hu
- School of Microelectronics, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Gehong Su
- College of Science, Sichuan Agricultural University, Ya'an, 625000, China
| | - Jingxin Lei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China
| | - Zhimeng Liu
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Xin He
- School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
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3
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Baruel AF, Dutra RCL, Diniz MF, Azevedo MFP, Cassu SN. The role of organoclay in the diffusion of epoxy‐amine oligomers and in the cross‐linking density of the resulting network. J Appl Polym Sci 2022. [DOI: 10.1002/app.53571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Amanda F. Baruel
- Instituto Tecnológico de Aeronáutica (ITA) São José dos Campos SP Brazil
- Instituto de Aeronáutica e Espaço (IAE) São José dos Campos SP Brazil
| | - Rita C. L. Dutra
- Instituto Tecnológico de Aeronáutica (ITA) São José dos Campos SP Brazil
| | - Milton F. Diniz
- Instituto de Aeronáutica e Espaço (IAE) São José dos Campos SP Brazil
| | | | - Silvana N. Cassu
- Instituto Tecnológico de Aeronáutica (ITA) São José dos Campos SP Brazil
- Instituto de Aeronáutica e Espaço (IAE) São José dos Campos SP Brazil
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4
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Chen B, Jiang J, Li Y, Zhou M, Wang Z, Wang L, Zhai W. Supercritical Fluid Microcellular Foaming of High-Hardness TPU via a Pressure-Quenching Process: Restricted Foam Expansion Controlled by Matrix Modulus and Thermal Degradation. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248911. [PMID: 36558060 PMCID: PMC9783504 DOI: 10.3390/molecules27248911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
High-hardness thermoplastic polyurethane (HD-TPU) presents a high matrix modulus, low-temperature durability, and remarkable abrasion resistance, and has been used in many advanced applications. However, the fabrication of microcellular HD-TPU foam is rarely reported in the literature. In this study, the foaming behavior of HD-TPU with a hardness of 75D was investigated via a pressure-quenching foaming process using CO2 as a blowing agent. Microcellular HD-TPU foam with a maximum expansion ratio of 3.9-fold, a cell size of 25.9 μm, and cell density of 7.8 × 108 cells/cm3 was prepared, where a high optimum foaming temperature of about 170 °C had to be applied with the aim of softening the polymer's matrix modulus. However, the foaming behavior of HD-TPU deteriorated when the foaming temperature further increased to 180 °C, characterized by the presence of coalesced cells, microcracks, and a high foam density of 1.0 g/cm3 even though the crystal domains still existed within the matrix. The cell morphology evolution of HD-TPU foam was investigated by adjusting the saturation time, and an obvious degradation occurred during the high-temperature saturation process. A cell growth mechanism of HD-TPU foams in degradation environments was proposed to explain this phenomenon based on the gas escape through the defective matrix.
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Affiliation(s)
- Bichi Chen
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Junjie Jiang
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yaozong Li
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Mengnan Zhou
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Zelin Wang
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Liang Wang
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Wentao Zhai
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Correspondence: ; Tel./Fax: +86-020-8411-3428
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5
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Ingle J, Dedaniya H, Mayya C, Mondal A, Bhatia D, Basu S. γ‐Resorcyclic Acid‐Based AIEgens for Illuminating Endoplasmic Reticulum**. Chemistry 2022; 28:e202200203. [DOI: 10.1002/chem.202200203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Jaypalsing Ingle
- Discipline of Chemistry Indian Institute of Technology Gandhinagar 382355 Palaj Gujarat India
| | - Hiren Dedaniya
- Discipline of Chemistry Indian Institute of Technology Gandhinagar 382355 Palaj Gujarat India
| | - Chaithra Mayya
- Discipline of Biological Engineering Indian Institute of Technology Gandhinagar 382355 Palaj Gujarat India
| | - Anirban Mondal
- Discipline of Chemistry Indian Institute of Technology Gandhinagar 382355 Palaj Gujarat India
| | - Dhiraj Bhatia
- Discipline of Biological Engineering Indian Institute of Technology Gandhinagar 382355 Palaj Gujarat India
| | - Sudipta Basu
- Discipline of Chemistry Indian Institute of Technology Gandhinagar 382355 Palaj Gujarat India
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6
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Prediction of Thermal Conductivities of Rubbers by MD Simulations-New Insights. Polymers (Basel) 2022; 14:polym14102046. [PMID: 35631927 PMCID: PMC9146200 DOI: 10.3390/polym14102046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/11/2022] [Accepted: 05/13/2022] [Indexed: 02/04/2023] Open
Abstract
In this article, two main approaches to the prediction of thermal conductivities by molecular dynamics (MD) simulations are discussed, namely non-equilibrium molecular dynamics simulations (NEMD) and the application of the Green–Kubo formula, i.e., EMD. NEMD methods are more affected by size effects than EMD methods. The thermal conductivities of silicone rubbers in special were found as a function of the degree of crosslinking. Moreover, the thermal conductivities of thermoplastic polyurethane as function of the mass fraction of soft segments were obtained by those MD simulations. All results are in good agreement with data from the experimental literature. After the analysis of normalized heat flux autocorrelation functions, it has been revealed that heat in the polymers is mainly transferred by low-frequency phonons. Simulation details as well as advantages and disadvantages of the single methods are discussed in the article.
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7
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Akibul Islam M, Asaduzzaman Chowdhury M, Arefin Kowser M, Osman Ali M, Azad K, Ramjan Ali M. Enhancement of Thermal Properties of Kevlar 29 Coated by SiC and TiO2 Nanoparticles and their Binding Energy Analysis. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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8
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Lee UJ, Shin SR, Noh H, Song HB, Kim J, Lee DS, Kim BG. Rationally Designed Eugenol-Based Chain Extender for Self-Healing Polyurethane Elastomers. ACS OMEGA 2021; 6:28848-28858. [PMID: 34746577 PMCID: PMC8567349 DOI: 10.1021/acsomega.1c03802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Bio-based polyurethane (PU) has recently drawn our attention due to the increasing interest in sustainability and the risks involved with petroleum depletion. Herein, bio-based self-healing PU with a novel polyol, i.e., eugenol glycol dimer (EGD), was synthesized and characterized for the first time. EGD was designed to have pairs of primary, secondary, and aromatic alcohols, which all are able to be involved in urethane bond formation and to show self-healing and antioxidant effects. EGD was incorporated into a mixture of the prepolymer of polyol (tetramethylene ether glycol) and 4,4'-methylene diphenyl diisocyanate to synthesize PU. EGD-PU showed excellent self-healing properties (99.84%), and it maintained its high self-healing property (84.71%) even after three repeated tests. This dramatic self-healing was induced through transcarbamoylation by the pendant hydroxyl groups of EGD-PU. The excellent antioxidant effect of EGD-PU was confirmed by 2,2-diphenyl-1-picrylhydrazyl analysis. Eugenol-based EGD is a promising polyol chain extender that is required in the production of bio-based, self-healing, and recyclable polyurethane; therefore, EGD-PU can be applied to bio-based self-healable films or coating materials as a substitute for petroleum-based PU.
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Affiliation(s)
- Uk-Jae Lee
- School
of Chemical and Biological Engineering, Seoul National University, Gwanak-ro 1, Gwanak-gu, 08826 Seoul, Republic of Korea
- Institute
of Molecular Biology and Genetics, Seoul
National University, Seoul, 08826 Republic of Korea
| | - Se-Ra Shin
- Research
Institute, Jungwoo Fine Co., Ltd., #63-8, Seogam-ro 1-gil, Iksan, Jeollabuk-do 54586, Republic of Korea
| | - Heewon Noh
- School
of Chemical and Biological Engineering, Seoul National University, Gwanak-ro 1, Gwanak-gu, 08826 Seoul, Republic of Korea
- Institute
of Molecular Biology and Genetics, Seoul
National University, Seoul, 08826 Republic of Korea
| | - Han-Bit Song
- School
of Chemical and Biological Engineering, Seoul National University, Gwanak-ro 1, Gwanak-gu, 08826 Seoul, Republic of Korea
- Institute
of Molecular Biology and Genetics, Seoul
National University, Seoul, 08826 Republic of Korea
| | - Junyeob Kim
- School
of Chemical and Biological Engineering, Seoul National University, Gwanak-ro 1, Gwanak-gu, 08826 Seoul, Republic of Korea
- Institute
of Molecular Biology and Genetics, Seoul
National University, Seoul, 08826 Republic of Korea
| | - Dai-Soo Lee
- Research
Institute, Jungwoo Fine Co., Ltd., #63-8, Seogam-ro 1-gil, Iksan, Jeollabuk-do 54586, Republic of Korea
| | - Byung-Gee Kim
- School
of Chemical and Biological Engineering, Seoul National University, Gwanak-ro 1, Gwanak-gu, 08826 Seoul, Republic of Korea
- Institute
of Molecular Biology and Genetics, Seoul
National University, Seoul, 08826 Republic of Korea
- Institute
of Bioengineering in Bio-Max, Seoul National
University, Gwanak-ro
1, Gwanak-gu, Seoul 08826, Republic of Korea
- Institute
for Sustainable Development(ISD), Seoul
National University, Seoul 08826, South Korea
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9
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Jiang Y, Li Z. Preparation and characterization of a novel polyurethane/polyurethane modified graphene oxide composites. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04879-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Qu Q, He J, Da Y, Zhu M, Liu Y, Li X, Tian X, Wang H. High Toughness Polyurethane toward Artificial Muscles, Tuned by Mixing Dynamic Hard Domains. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01098] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Qiqi Qu
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jing He
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yunsheng Da
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Menghan Zhu
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yanyan Liu
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Xiaoxiao Li
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Xingyou Tian
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Hua Wang
- Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
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11
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12
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Madajska K, Szymańska IB. New Volatile Perfluorinated Amidine-Carboxylate Copper(II) Complexes as Promising Precursors in CVD and FEBID Methods. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3145. [PMID: 34201158 PMCID: PMC8230148 DOI: 10.3390/ma14123145] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 12/05/2022]
Abstract
In the present study, we have synthesised and characterised newly copper(II) complexes with the general formula [Cu2(NH2(NH=)CC2F5)2(µ-O2CRF)4], where RF = CF3, C2F5, C3F7, C4F9. Infrared spectroscopy, mass spectrometry with electron ionisation (EI MS), and density-functional theory (DFT) calculations were used to confirm compounds' composition and structure. The volatility of the compounds was studied using thermal analysis (TGA), EI MS mass spectrometry, variable temperature infrared spectroscopy (VT IR), and sublimation experiments. Research has revealed that these compounds are the source of metal carriers in the gas phase. The thermal decomposition mechanism over reduced pressure was proposed. TGA studies demonstrated that copper transfer to the gaseous phase occurs even at atmospheric pressure. Two selected complexes [Cu2(NH2(NH=)CC2F5)2(µ-O2CC2F5)4] and [Cu2(NH2(NH=)CC2F5)2(µ-O2CC3F7)4] were successful used as chemical vapour deposition precursors. Copper films were deposited with an evaporation temperature of 393 K and 453 K, respectively, and a decomposition temperature in the range of 573-633 K without the use of hydrogen. The microscopic observations made to investigate the interaction of the [Cu2(NH2(NH=)CC2F5)2(µ-O2CC2F5)4] with the electron beam showed that the ligands are completely lost under transmission electron microscopy analysis conditions (200 keV), and the final product is copper(II) fluoride. In contrast, the beam energy in scanning electron microscopy (20 keV) was insufficient to break all coordination bonds. It was shown that the Cu-O bond is more sensitive to the electron beam than the Cu-N bond.
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Affiliation(s)
| | - Iwona Barbara Szymańska
- Department of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland;
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13
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Wang JQ, Lou TJ, Wang T, Cao W, Zhao H, Qian PF, Bao ZL, Yuan XT, Geng HZ. Flexible Electrothermal Laminate Films Based on Tannic Acid-Modified Carbon Nanotube/Thermoplastic Polyurethane Composite. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00964] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jing-Qi Wang
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Tian-Jiao Lou
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Tao Wang
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Weiwei Cao
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Hui Zhao
- Tai’an Zhongyan Composite Material Technology Co., Ltd., Tai’an 271000, Shandong, China
| | - Peng-Fei Qian
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Ze-Long Bao
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Xiao-Tong Yuan
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Hong-Zhang Geng
- Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
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14
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Wang T, Sun X, Guo X, Zhang J, Yang J, Tao S, Guan J, Zhou L, Han J, Wang C, Yao H, Wang G. Ultraefficiently Calming Cytokine Storm Using Ti 3C 2T x MXene. SMALL METHODS 2021; 5:e2001108. [PMID: 33786372 PMCID: PMC7995020 DOI: 10.1002/smtd.202001108] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/17/2020] [Indexed: 05/17/2023]
Abstract
During the global outbreak of COVID-19 pandemic, "cytokine storm" conditions are regarded as the fatal step resulting in most mortality. Hemoperfusion is widely used to remove cytokines from the blood of severely ill patients to prevent uncontrolled inflammation induced by a cytokine storm. This article discoveres, for the first time, that 2D Ti3C2T x MXene sheet demonstrates an ultrahigh removal capability for typical cytokine interleukin-6. In particular, MXene shows a 13.4 times higher removal efficiency over traditional activated carbon absorbents. Molecular-level investigations reveal that MXene exhibits a strong chemisorption mechanism for immobilizing cytokine interleukin-6 molecules, which is different from activated carbon absorbents. MXene sheet also demonstrates excellent blood compatibility without any deleterious side influence on the composition of human blood. This work can open a new avenue to use MXene sheets as an ultraefficient hemoperfusion absorbent to eliminate the cytokine storm syndrome in treatment of severe COVID-19 patients.
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Affiliation(s)
- Tianyi Wang
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
| | - Xiaoyu Sun
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Xin Guo
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
| | - Jinqiang Zhang
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
| | - Jian Yang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Shouxuan Tao
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Jun Guan
- Clinical Medical CollegeNorthern Jiangsu People's HospitalYangzhou UniversityYangzhouJiangsu Province225009P. R. China
| | - Lin Zhou
- Clinical Medical CollegeNorthern Jiangsu People's HospitalYangzhou UniversityYangzhouJiangsu Province225009P. R. China
| | - Jie Han
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Chengyin Wang
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Hang Yao
- School of Chemistry and Chemical EngineeringYangzhou UniversityYangzhouJiangsu Province225002P. R. China
| | - Guoxiu Wang
- Faculty of ScienceUniversity of Technology SydneySydneyNSW2007Australia
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15
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Xu DH, Liu F, Pan G, Zhao ZG, Yang X, Shi HC, Luan SF. Softening and hardening of thermal plastic polyurethane blends by water absorbed. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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16
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Chen X, Zawaski CE, Spiering GA, Liu B, Orsino CM, Moore RB, Williams CB, Long TE. Quadruple Hydrogen Bonding Supramolecular Elastomers for Melt Extrusion Additive Manufacturing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:32006-32016. [PMID: 32520520 DOI: 10.1021/acsami.0c08958] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This manuscript describes the versatility of highly directional, noncovalent interactions, i.e., quadruple hydrogen bonding (QHB), to afford novel polyurea segmented supramolecular polymers for melt extrusion three-dimensional (3D) printing processes. The molecular design of the polyurea elastomers features (1) flexible polyether segments and relatively weak urea hydrogen-bonding sites in the soft segments to provide elasticity and toughness, and (2) strong ureido-cytosine (UCyt) QHB in the hard segments to impart enhanced mechanical integrity. The resulting polyureas were readily compression-molded into mechanically-robust, transparent, and creasable films. Optimization of polyurea composition offered a rare combination of high tensile strength (95 MPa), tensile elongation (788% strain), and toughness (94 MJ/m3), which are superior to a commercially available Ninjaflex elastomer. The incorporation of QHB facilitated melt processability, where hydrogen bonding dissociation provided low viscosities at printing temperatures. During cooling, directional self-assembly of UCyt QHB facilitated the solidification process and contributed to part fidelity with the formation of a robust physical network. The printed objects displayed high layer fidelity, smooth surfaces, minimal warpage, and complex geometries. The presence of highly directional QHB effectively diminished mechanical anisotropy, and the printed samples exhibited comparable Young's moduli along (x-y direction, 0°) and perpendicular to (z-direction, 90°) the layer direction. Remarkably, the printed samples exhibited ultimate tensile strains approaching 500% in the z-direction prior to failure, which was indicative of improved interlayer adhesion. Thus, this design paradigm, which is demonstrated for novel polyurea copolymers, suggests the potential of supramolecular polymers with enhanced mechanical performance, melt processability, recyclability, and improved interlayer adhesion for melt extrusion additive manufacturing processes.
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Affiliation(s)
- Xi Chen
- Department of Chemistry, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Callie E Zawaski
- Department of Mechanical Engineering, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Glenn A Spiering
- Department of Chemistry, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Boer Liu
- Department of Chemistry, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Christina M Orsino
- Department of Chemistry, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Robert B Moore
- Department of Chemistry, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Christopher B Williams
- Department of Mechanical Engineering, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Timothy E Long
- Department of Chemistry, Macromolecules Innovation Institute (MII), Virginia Tech, Blacksburg, Virginia 24061, United States
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Patil S, Pandey S, Singh A, Radhakrishna M, Basu S. Hydrazide-Hydrazone Small Molecules as AIEgens: Illuminating Mitochondria in Cancer Cells. Chemistry 2019; 25:8229-8235. [PMID: 30969447 DOI: 10.1002/chem.201901074] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Indexed: 12/26/2022]
Abstract
Aggregation-induced-emission luminogens (AIEgens) have gained considerable attention as interesting tools for several biomedical applications, especially for bioimaging due to their brightness and photostability. Numerous AIEgens have been developed for lighting up the subcellular organelles to understand their forms and functions not only healthy but also unhealthy states, such as in cancer cells. However, there is lack of easily synthesizable, biocompatible small molecules for illuminating mitochondria (powerhouses) inside cells. To address this issue, an easy and short synthesis of new biocompatible hydrazide-hydrazone-based small molecules with remarkable aggregation-induced emission (AIE) properties is described. These small-molecule AIEgens showed hitherto unobserved AIE properties due to dual intramolecular H-bonding confirmed by theoretical calculation, pH- and temperature-dependent fluorescence and X-ray crystallographic studies. Confocal microscopy showed that these AIEgens were internalized into the HeLa cervical cancer cells without showing any cytotoxicity. One of the AIEgens was tagged with a triphenylphosphine (TPP) moiety, which successfully localized in the mitochondria of HeLa cells in a selective way compared to L929 noncancerous fibroblast cells. These unique hydrazide-hydrazone-based biocompatible AIEgens can serve as powerful tools to illuminate multiple subcellular organelles to elucidate their forms and functions in cancer cells for next-generation biomedical applications.
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Affiliation(s)
- Sohan Patil
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra, 411008, India
| | - Shalini Pandey
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra, 411008, India
| | - Amit Singh
- Department of Chemistry, Indian Institute of Technology (IIT)-Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Mithun Radhakrishna
- Department of Chemical Engineering, Indian Institute of Technology (IIT)-Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Sudipta Basu
- Department of Chemistry, Indian Institute of Technology (IIT)-Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
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Effects of Isosorbide Incorporation into Flexible Polyurethane Foams: Reversible Urethane Linkages and Antioxidant Activity. Molecules 2019; 24:molecules24071347. [PMID: 30959785 PMCID: PMC6479515 DOI: 10.3390/molecules24071347] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 03/25/2019] [Accepted: 04/03/2019] [Indexed: 11/20/2022] Open
Abstract
Isosorbide (ISB), a nontoxic bio-based bicyclic diol composed from two fuzed furans, was incorporated into the preparation of flexible polyurethane foams (FPUFs) for use as a cell opener and to impart antioxidant properties to the resulting foam. A novel method for cell opening was designed based on the anticipated reversibility of the urethane linkages formed by ISB with isocyanate. FPUFs containing various amounts of ISB (up to 5 wt%) were successfully prepared without any noticeable deterioration in the appearance and physical properties of the resulting foams. The air permeability of these resulting FPUFs was increased and this could be further improved by thermal treatment at 160 °C. The urethane units based on ISB enabled cell window opening, as anticipated, through the reversible urethane linkage. The ISB-containing FPUFs also demonstrated better antioxidant activity by impeding discoloration. Thus, ISB, a nontoxic, bio-based diol, can be a valuable raw material (or additive) for eco-friendly FPUFs without seriously compromising the physical properties of these FPUFs.
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Xiao Z, Sheng C, Xia Y, Yu X, Liang C, Huang H, Gan Y, Zhang J, Zhang W. Electrical heating behavior of flexible thermoplastic polyurethane/Super-P nanoparticle composite films for advanced wearable heaters. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.11.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Ma Y, Zhou T. Preliminary study of experimental parameters for projection moving-window two-dimensional correlation FTIR spectroscopy. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Ahmed MF, Li Y, Yao Z, Cao K, Zeng C. TPU/PLA blend foams: Enhanced foamability, structural stability, and implications for shape memory foams. J Appl Polym Sci 2018. [DOI: 10.1002/app.47416] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mohammad Faisal Ahmed
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
| | - Yan Li
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
- High-Performance Materials Institute; Florida State University; Tallahassee Florida 32310
| | - Zhen Yao
- Institute of Polymerization and Polymer Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Kun Cao
- Institute of Polymerization and Polymer Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Changchun Zeng
- Industrial and Manufacturing Engineering; FAMU-FSU College of Engineering; Tallahassee Florida 32310
- High-Performance Materials Institute; Florida State University; Tallahassee Florida 32310
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22
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Yuan D, Bonab VS, Patel A, Manas-Zloczower I. Self-healing epoxy coatings with enhanced properties and facile processability. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.06.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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23
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Wang Y, Kang HL, Wang R, Liu RG, Hao XM. Crystallization of polyamide 56/polyamide 66 blends: Non-isothermal crystallization kinetics. J Appl Polym Sci 2018. [DOI: 10.1002/app.46409] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yu Wang
- School of Materials Science and Engineering; Beijing Institute of Fashion Technology; Beijing 100029 China
- Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory of Molecular Sciences; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Hong-Liang Kang
- Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory of Molecular Sciences; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Rui Wang
- School of Materials Science and Engineering; Beijing Institute of Fashion Technology; Beijing 100029 China
| | - Rui-Gang Liu
- Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory of Molecular Sciences; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Xin-Min Hao
- Quartermaster Engineering Technology Institute; Academy of Military Sciences, CPLA; Beijing 100082 China
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Niemczyk A, Piegat A, Sonseca Olalla Á, El Fray M. New approach to evaluate microphase separation in segmented polyurethanes containing carbonate macrodiol. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.05.046] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Internal structure and crystallinity investigation of segmented thermoplastic polyurethane elastomer degradation in supercritical methanol. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Xue B, Xie L, Zhang J. Detailed molecular movements during poly(l-lactic acid) cold-crystallization investigated by FTIR spectroscopy combined with two-dimensional correlation analysis. RSC Adv 2017. [DOI: 10.1039/c7ra08921j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The sequential order of the groups' movement and the microdynamics mechanism of PLLA cold-crystallization are successfully investigated.
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Affiliation(s)
- Bai Xue
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Lan Xie
- Department of Polymer Materials and Engineering
- College of Materials and Metallurgy
- Guizhou University
- Guiyang 550025
- China
| | - Junhua Zhang
- The State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- China
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28
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Liu Y, Zhou T, Zhang A. Generation Mechanism of Oxidation Products during the Air Atmosphere Oxidation of SEBS/PP Blends: Tracked by 2D Correlation Infrared Spectroscopy. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600213] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yongcheng Liu
- State Key Laboratory of Polymer Materials Engineering of China; Polymer Research Institute; Sichuan University; Chengdu 610065 China
| | - Tao Zhou
- State Key Laboratory of Polymer Materials Engineering of China; Polymer Research Institute; Sichuan University; Chengdu 610065 China
| | - Aiming Zhang
- State Key Laboratory of Polymer Materials Engineering of China; Polymer Research Institute; Sichuan University; Chengdu 610065 China
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29
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Su G, Zhou T, Zhang Y, Liu X, Zhang A. Microdynamics mechanism of D2O absorption of the poly(2-hydroxyethyl methacrylate)-based contact lens hydrogel studied by two-dimensional correlation ATR-FTIR spectroscopy. SOFT MATTER 2016; 12:1145-1157. [PMID: 26577131 DOI: 10.1039/c5sm02542g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A good understanding of the microdynamics of the water absorption of poly(2-hydroxyethyl methacrylate) (PHEMA)-based contact lens is significant for scientific investigation and commercial applications. In this study, time-dependent ATR-FTIR spectroscopy combined with the perturbation correlation moving-window two-dimensional (PCMW2D) technique and 2D correlation analysis was used to study the microdynamics mechanism. PCMW2D revealed that D2O took 3.4 min to penetrate into the contact lens. PCMW2D also found the PHEMA-based contact lens underwent two processes (I and II) during D2O absorption, and the time regions of processes I and II are 3.4-12.4 min and 12.4-57.0 min. According to 2D correlation analysis, it was proved that process I has 5 steps, and process II has 3 steps. For process I, the first step is D2O hydrogen-bonding with "free" C[double bond, length as m-dash]O in the side chains. The second step is the hydrogen bond generation of the O-HO-D structure between D2O and "free" O-H groups in the side chain ends. The third step is the hydrogen bond generation of D2O and the "free" C[double bond, length as m-dash]O groups close to the crosslinking points in the contact lens. The fourth and the fifth steps are the hydration of -CH3 and -CH2- groups by D2O, respectively. For process II, the first step is the same as that of process I. The second step is the hydrogen bonds breaking of bonded O-H groups and the deuterium exchange between D2O and O-H groups in the side chain ends. The third step is also related to the deuterium exchange, which is the hydrogen bonds regeneration between the dissociated C[double bond, length as m-dash]O groups and the new O-D.
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Affiliation(s)
- Gehong Su
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
| | - Tao Zhou
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
| | - Yanyan Zhang
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
| | - Xifei Liu
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
| | - Aiming Zhang
- State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
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30
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Ma Y, Zhou T, Su G, Li Y, Zhang A. Understanding the crystallization behavior of polyamide 6/polyamide 66 alloys from the perspective of hydrogen bonds: projection moving-window 2D correlation FTIR spectroscopy and the enthalpy. RSC Adv 2016. [DOI: 10.1039/c6ra09611e] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, the crystallization behavior of PA6/PA66 alloys was studied using in situ FTIR spectroscopy, combined with Proj-MW2D correlation analysis and Van't Hoff analysis.
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Affiliation(s)
- Yanan Ma
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Tao Zhou
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Gehong Su
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Yan Li
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Aiming Zhang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
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31
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Zhao J, Zhang J, Zhou T, Liu X, Yuan Q, Zhang A. New understanding on the reaction pathways of the polyacrylonitrile copolymer fiber pre-oxidation: online tracking by two-dimensional correlation FTIR spectroscopy. RSC Adv 2016. [DOI: 10.1039/c5ra24320c] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
FTIR spectroscopy in combination with scaling-MW2D and 2D correlation analysis is used to study the reaction pathways of polyacrylonitrile copolymer fibers pre-oxidation.
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Affiliation(s)
- Jing Zhao
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Jihai Zhang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Tao Zhou
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Xifei Liu
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Qiang Yuan
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Aiming Zhang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
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32
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Su G, Zhou T, Liu X, Zhang J, Bao J, Zhang A. Two-dimensional correlation infrared spectroscopy reveals the detailed molecular movements during the crystallization of poly(ethylene-co-vinyl alcohol). RSC Adv 2015. [DOI: 10.1039/c5ra13486b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The key role of hydrogen bonding during the crystallization of EVOH was elucidated from the enthalpy and molecular movements.
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Affiliation(s)
- Gehong Su
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Tao Zhou
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Xifei Liu
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Jihai Zhang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Jianjun Bao
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
| | - Aiming Zhang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute
- Sichuan University
- Chengdu 610065
- China
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