1
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Temperature-Responsive Polymer Brush Coatings for Advanced Biomedical Applications. Polymers (Basel) 2022; 14:polym14194245. [PMID: 36236192 PMCID: PMC9571834 DOI: 10.3390/polym14194245] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 01/15/2023] Open
Abstract
Modern biomedical technologies predict the application of materials and devices that not only can comply effectively with specific requirements, but also enable remote control of their functions. One of the most prospective materials for these advanced biomedical applications are materials based on temperature-responsive polymer brush coatings (TRPBCs). In this review, methods for the fabrication and characterization of TRPBCs are summarized, and possibilities for their application, as well as the advantages and disadvantages of the TRPBCs, are presented in detail. Special attention is paid to the mechanisms of thermo-responsibility of the TRPBCs. Applications of TRPBCs for temperature-switchable bacteria killing, temperature-controlled protein adsorption, cell culture, and temperature-controlled adhesion/detachment of cells and tissues are considered. The specific criteria required for the desired biomedical applications of TRPBCs are presented and discussed.
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2
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Zhang AS, Li SH, Xu LH, Mao H, Zhao ZP. 1D continuous ZIF-8 tubes incorporated PDMS mixed matrix membrane for superior ethyl acetate pervaporation separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120127] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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3
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Liu S, Lv M, Li H, Wang S, Feng C, Wang X, Hu W, Wang W. Optical Imaging of the Molecular Mobility of Single Polystyrene Nanospheres. J Am Chem Soc 2022; 144:1267-1273. [PMID: 35014804 DOI: 10.1021/jacs.1c10575] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An ultrathin surface layer with extraordinary molecular mobility has been discovered and intensively investigated on thin-film polymer materials for decades. However, because of the lack of suitable characterization techniques, it remains largely unexplored whether such a surface mobile layer also exists on individual polymeric nanospheres. Here, we propose a thermal-optical imaging technique to determine the glass transition (Tg) and rubber-fluid transition (Tf) temperatures of single isolated polystyrene nanospheres (PSNS) in a high-throughput and nonintrusive manner for the first time. Two distinct steps, corresponding to the glass transition and rubber-fluid transition, respectively, were clearly observed in the optical trace of single PSNS during temperature ramping. Because the transition temperature and size of the same individuals were both determined, single nanoparticle measurements revealed the reduced apparent Tf and increased Tg of single PSNS on the gold substrate with a decreasing radius from 130 to 70 nm. Further experiments revealed that the substrate effect played an important role in the increased Tg. More importantly, a gradual decrease in the optical signal was detected prior to the glass transition, which was consistent with a surface layer with enhanced molecular mobility. Quantitative analysis further revealed the thickness of this layer to be ∼8 nm. This work not only uncovered the existence and thickness of a surface mobile layer in single isolated nanospheres but also demonstrated a general bottom-up strategy to investigate the structure-property relationship of polymeric nanomaterials by correlating the thermal property (Tg and Tf) and structural features (size) at single nanoparticle level.
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Affiliation(s)
- Shasha Liu
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Mengqi Lv
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Haoran Li
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Sa Wang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Chengdong Feng
- State Key Lab of Coordination Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiaoliang Wang
- State Key Lab of Coordination Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Wenbing Hu
- State Key Lab of Coordination Chemistry, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Wei Wang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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4
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Lei Q, He F, Zhao X, Yin J. Inorganic reinforced poly(ionic liquid) microcapsules: confined cooling-assisted phase separation self-assembly and enhanced electro-responsive property. Macromol Rapid Commun 2021; 43:e2100769. [PMID: 34932252 DOI: 10.1002/marc.202100769] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/15/2021] [Indexed: 11/08/2022]
Abstract
We report a simple preparation of inorganic reinforced poly(ionic liquid) (PIL) microcapsules by combining dispersion polymerization and confined cooling-assisted phase separation self-assembly. Silane coupling agent-modified PIL microbeads were first prepared by dispersion polymerization. Then, the microbeads were dissolved in a mixed solvent composed of good solvent and non-solvent to form hollow SiOx microcapsules at a relatively high temperature. Finally, the solution was cooled to induce the nucleation and growth of dissolved PIL chains on the inner and outer surface of hollow SiOx microcapsules to form inorganic reinforced microcapsules with asymmetric PIL/SiOx /PIL sandwich-like shell. The morphology of microcapsules can be controlled by adjusting PIL concentration and cooling rate. The inorganic reinforced microcapsules show enhanced suspended stability and electro-responsive characteristic when used as the dispersed phase of smart suspensions. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Qi Lei
- Smart Materials Laboratory, Department of Applied Physics, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, Shaanxi, 710129, China.,Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, 518057, China
| | - Fang He
- Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, 518057, China
| | - Xiaopeng Zhao
- Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, 518057, China
| | - Jianbo Yin
- Smart Materials Laboratory, Department of Applied Physics, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, Shaanxi, 710129, China.,Research and Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong, 518057, China
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5
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Coordinate covalent grafted ILs-modified MIL-101/PEBA membrane for pervaporation: Adsorption simulation and separation characteristics. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118807] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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6
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Ma MC, Guo YL. Physical Properties of Polymers Under Soft and Hard Nanoconfinement: A Review. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2380-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Li Y, Lin D, Xu J, Zhou X, Zuo B, Tsui OKC, Zhang W, Wang X. Glass transition temperature of single-chain polystyrene particles end-grafted to oxide-coated silicon. J Chem Phys 2020; 152:064904. [PMID: 32061204 DOI: 10.1063/1.5140627] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A method based on the PeakForce QNM atomic force microscopic (AFM) adhesion measurement is employed to investigate the glassy dynamics of polystyrene (PS) single-chain particles end-grafted to SiO2-Si substrates with different diameters, D0, of 3.4 nm-8.8 nm and molar masses, Mn, of 8-123 kg/mol. As temperature was increased, the adhesion force, Fad, experienced by the AFM tip on pulling off the single chains after loading demonstrated a stepwise increase at an elevated temperature, which we identified to be Tg based on previous works. Our result shows that Tg of our grafted single chains increases with Mn in a manner consistent with the Fox-Flory equation, but the coefficient quantifying the Mn dependence of Tg is only (36 ± 6)% the value of bulk PS. In addition, the value of Tg in the Mn → ∞ limit is about 25 °C below the bulk Tg but more than 15 °C above that of (untethered) PS nanoparticles with D0 ≈ 100 nm suspended in a solution. Our findings are consistent with Tg of our single chains being dominated by simultaneous effects of the interfaces, which depress Tg, and end-grafting, which enhances Tg. The latter is believed to exert its influence on the glass transition dynamics by a mechanism reliant on chain connectivity and does not vary with chain length.
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Affiliation(s)
- Yawei Li
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Decai Lin
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jianquan Xu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xianjing Zhou
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Biao Zuo
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Ophelia K C Tsui
- Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Wei Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xinping Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
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8
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Wen X, Zhao W, Su Y, Wang D. Interfacial effects on crystallization behavior of polymer nanocomposites with polymer‐grafted nanoparticles. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xiangning Wen
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Weiwei Zhao
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Yunlan Su
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Dujin Wang
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
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9
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Shojaeiarani J, Bajwa DS, Rehovsky C, Bajwa SG, Vahidi G. Deterioration in the Physico-Mechanical and Thermal Properties of Biopolymers Due to Reprocessing. Polymers (Basel) 2019; 11:E58. [PMID: 30960042 PMCID: PMC6401911 DOI: 10.3390/polym11010058] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 11/30/2022] Open
Abstract
Biopolymers are an emerging class of materials being widely pursued due to their ability to degrade in short periods of time. Understanding and evaluating the recyclability of biopolymers is paramount for their sustainable and efficient use in a cost-effective manner. Recycling has proven to be an important solution, to control environmental and waste management issues. This paper presents the first recycling assessment of Solanyl, Bioflex, polylactic acid (PLA) and PHBV using a melt extrusion process. All biopolymers were subjected to five reprocessing cycles. The thermal and mechanical properties of the biopolymers were investigated by GPC, TGA, DSC, mechanical test, and DMA. The molecular weights of Bioflex and Solanyl showed no susceptible effect of the recycling process, however, a significant reduction was observed in the molecular weight of PLA and PHBV. The inherent thermo-mechanical degradation in PHBV and PLA resulted in 20% and 7% reduction in storage modulus, respectively while minimal reduction was observed in the storage modulus of Bioflex and Solanyl. As expected from the Florry-Fox equation, recycled PLA with a high reduction in molecular weight (78%) experienced 9% reduction in glass transition temperature. Bioflex and Solanyl showed 5% and 2% reduction in molecular weight and experienced only 2% reduction in glass transition temperature. These findings highlight the recyclability potential of Bioflex and Solanyl over PLA and PHBV.
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Affiliation(s)
- Jamileh Shojaeiarani
- Department of Mechanical Engineering, North Dakota State University, Fargo, ND 58108, USA.
| | - Dilpreet S Bajwa
- Department of Mechanical Engineering, North Dakota State University, Fargo, ND 58108, USA.
| | - Chad Rehovsky
- Department of Mechanical Engineering, North Dakota State University, Fargo, ND 58108, USA.
| | - Sreekala G Bajwa
- Department of Agriculture and Biosystem Engineering, North Dakota State University, Fargo, ND 58108, USA.
| | - Ghazal Vahidi
- Department of Mechanical Engineering, North Dakota State University, Fargo, ND 58108, USA.
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10
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Lei Q, Zheng C, He F, Zhao J, Liu Y, Zhao X, Yin J. Enhancing Electroresponsive Electrorheological Effect and Temperature Dependence of Poly(ionic liquid) Particles by Hard Core Confinement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:15827-15838. [PMID: 30500198 DOI: 10.1021/acs.langmuir.8b03508] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Monodisperse core-shell-structured SiO2@poly(ionic liquid) (SiO2@PIL) particles are prepared by the polymerization of ionic liquid monomer on the surface of methacryloxypropyltrimethoxysilane-modified SiO2 particles. The electroresponsive electrorheological (ER) effect of SiO2@PIL particles when dispersed in insulating carrier liquid is investigated and compared with that of pure poly(ionic liquid) (PIL) particles based on temperature-modulated rheology under electric fields. It is demonstrated that hard SiO2 core not only enhances the ER effect of PIL particles but also improves the temperature dependence of ER effect. By dielectric spectroscopy analysis, the mechanism behind the property enhancement was discussed. It indicates that the hard SiO2 core can not only increase the interfacial polarization strength of SiO2@PIL particles by core-shell architecture but also restrain the segment relaxation or softening of the PIL shell and influence the ion dynamics above the calorimetric glass transition of PILs by the so called "substrate confinement effect", and this should be responsible for the enhanced electroresponsive ER effect and temperature stability of the SiO2@PIL particles.
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Affiliation(s)
- Qi Lei
- Smart Materials Laboratory, Department of Applied Physics , Northwestern Polytechnical University , Xi'an 710129 , P. R. China
| | - Chen Zheng
- Smart Materials Laboratory, Department of Applied Physics , Northwestern Polytechnical University , Xi'an 710129 , P. R. China
| | - Fang He
- Smart Materials Laboratory, Department of Applied Physics , Northwestern Polytechnical University , Xi'an 710129 , P. R. China
| | - Jia Zhao
- Smart Materials Laboratory, Department of Applied Physics , Northwestern Polytechnical University , Xi'an 710129 , P. R. China
| | - Yang Liu
- Smart Materials Laboratory, Department of Applied Physics , Northwestern Polytechnical University , Xi'an 710129 , P. R. China
| | - Xiaopeng Zhao
- Smart Materials Laboratory, Department of Applied Physics , Northwestern Polytechnical University , Xi'an 710129 , P. R. China
| | - Jianbo Yin
- Smart Materials Laboratory, Department of Applied Physics , Northwestern Polytechnical University , Xi'an 710129 , P. R. China
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11
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Guzman-Juarez B, Abdelaal A, Kim K, Toader V, Reven L. Fabrication of Amphiphilic Nanoparticles via Mixed Homopolymer Brushes and NMR Characterization of Surface Phase Separation. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01959] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Brenda Guzman-Juarez
- Quebec Center for Advanced Materials (QCAM), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
| | - Ahmed Abdelaal
- Quebec Center for Advanced Materials (QCAM), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
| | - Kuenhee Kim
- Quebec Center for Advanced Materials (QCAM), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
| | - Violeta Toader
- Quebec Center for Advanced Materials (QCAM), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
| | - Linda Reven
- Quebec Center for Advanced Materials (QCAM), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
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12
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Saiev S, Bonnaud L, Dumas L, Zhang T, Dubois P, Beljonne D, Lazzaroni R. Do Carbon Nanotubes Improve the Thermomechanical Properties of Benzoxazine Thermosets? ACS APPLIED MATERIALS & INTERFACES 2018; 10:26669-26677. [PMID: 30028582 DOI: 10.1021/acsami.8b08473] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fillers are widely used to improve the thermomechanical response of polymer matrices, yet often in an unpredictable manner because the relationships between the mechanical properties of the composite material and the primary (chemical) structure of its molecular components have remained elusive so far. Here, we report on a combined theoretical and experimental study of the structural and thermomechanical properties of carbon nanotube (CNT)-reinforced polybenzoxazine resins, as prepared from two monomers that only differ by the presence of two ethyl side groups. Remarkably, while addition of CNT is found to have no impact on the glass-transition temperature ( Tg) of the ethyl-decorated resin, the corresponding ethyl-free composite features a surge by ∼47 °C (50 °C) in Tg, from molecular dynamics simulations (dynamic mechanical analysis measurements), as compared to the neat resin. Through a detailed theoretical analysis, we propose a microscopic picture for the differences in the thermomechanical properties of the resins, which sheds light on the relative importance of network topology, cross-link and hydrogen-bond density, chain mobility, and free volume.
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Affiliation(s)
| | - Leïla Bonnaud
- Materia Nova R&D Center , Avenue Copernic 1, Parc Initialis , 7000 Mons , Belgium
| | | | | | - Philippe Dubois
- Materia Nova R&D Center , Avenue Copernic 1, Parc Initialis , 7000 Mons , Belgium
| | | | - Roberto Lazzaroni
- Materia Nova R&D Center , Avenue Copernic 1, Parc Initialis , 7000 Mons , Belgium
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13
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Xing C, Wang L, Xian L, Wang Y, Zhang L, Xi K, Zhang Q, Jia X. Enhanced Thermal Ageing Stability of Mechanophore in Polyurethane Network by Introducing Polyhedral Oligomeric Silsesquioxanes (POSS). MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800042] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chong Xing
- State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210023 P. R. China
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
- Nanjing National Laboratory of Microstructures; Nanjing University; Nanjing 210093 P. R. China
| | - Li Wang
- State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210023 P. R. China
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
- Nanjing National Laboratory of Microstructures; Nanjing University; Nanjing 210093 P. R. China
| | - Lei Xian
- State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210023 P. R. China
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
- Nanjing National Laboratory of Microstructures; Nanjing University; Nanjing 210093 P. R. China
| | - Yikai Wang
- State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210023 P. R. China
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
- Nanjing National Laboratory of Microstructures; Nanjing University; Nanjing 210093 P. R. China
| | - Linna Zhang
- State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210023 P. R. China
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
- Nanjing National Laboratory of Microstructures; Nanjing University; Nanjing 210093 P. R. China
| | - Kai Xi
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
| | - Qiuhong Zhang
- State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210023 P. R. China
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
- Nanjing National Laboratory of Microstructures; Nanjing University; Nanjing 210093 P. R. China
| | - Xudong Jia
- State Key Laboratory of Coordination Chemistry; Nanjing University; Nanjing 210023 P. R. China
- Department of Polymer Science and Engineering; Nanjing University; Nanjing 210023 P. R. China
- Nanjing National Laboratory of Microstructures; Nanjing University; Nanjing 210093 P. R. China
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14
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Ren W, Wang Y, Chen X, Zuo B, Zhou X, Wang X. Segmental Relaxation Dynamics of the Core and Corona in a Single Dry Micelle. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weizhao Ren
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yuping Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xin Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Biao Zuo
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xianjing Zhou
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xinping Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
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15
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Zuo B, Zhang S, Niu C, Zhou H, Sun S, Wang X. Grafting density dominant glass transition of dry polystyrene brushes. SOFT MATTER 2017; 13:2426-2436. [PMID: 28150841 DOI: 10.1039/c6sm02790c] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The effects of the grafting densities (σp), molecular weights (Mn) and thicknesses of dry polystyrene (PS) brushes on their glass transition temperature (T) were investigated by ellipsometry. The results show that T strongly depends on the grafting density of the PS brushes. The T of the PS brushes with σp > 0.30 increases with decreasing Mn (or brush thickness) and is mainly dominated by entropic effects, in which the grafted chains are highly extended along the film thickness direction resulting in a sharp reduction in configurational entropy. The T of PS brushes with σp < 0.30 decreases with decreasing Mn (or brush thickness) which is mainly dominated by surface effects. For intermediate-density brushes (σp = 0.30), T becomes independent of Mn or brush thickness. The reason for this grafting density dependence of T is attributed to the transition of the PS brush conformation from mushroom-to-brush.
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Affiliation(s)
- Biao Zuo
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Shasha Zhang
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Chen Niu
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Hao Zhou
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Shuzheng Sun
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Xinping Wang
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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16
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Napolitano S, Glynos E, Tito NB. Glass transition of polymers in bulk, confined geometries, and near interfaces. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2017; 80:036602. [PMID: 28134134 DOI: 10.1088/1361-6633/aa5284] [Citation(s) in RCA: 247] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
When cooled or pressurized, polymer melts exhibit a tremendous reduction in molecular mobility. If the process is performed at a constant rate, the structural relaxation time of the liquid eventually exceeds the time allowed for equilibration. This brings the system out of equilibrium, and the liquid is operationally defined as a glass-a solid lacking long-range order. Despite almost 100 years of research on the (liquid/)glass transition, it is not yet clear which molecular mechanisms are responsible for the unique slow-down in molecular dynamics. In this review, we first introduce the reader to experimental methodologies, theories, and simulations of glassy polymer dynamics and vitrification. We then analyse the impact of connectivity, structure, and chain environment on molecular motion at the length scale of a few monomers, as well as how macromolecular architecture affects the glass transition of non-linear polymers. We then discuss a revised picture of nanoconfinement, going beyond a simple picture based on interfacial interactions and surface/volume ratio. Analysis of a large body of experimental evidence, results from molecular simulations, and predictions from theory supports, instead, a more complex framework where other parameters are relevant. We focus discussion specifically on local order, free volume, irreversible chain adsorption, the Debye-Waller factor of confined and confining media, chain rigidity, and the absolute value of the vitrification temperature. We end by highlighting the molecular origin of distributions in relaxation times and glass transition temperatures which exceed, by far, the size of a chain. Fast relaxation modes, almost universally present at the free surface between polymer and air, are also remarked upon. These modes relax at rates far larger than those characteristic of glassy dynamics in bulk. We speculate on how these may be a signature of unique relaxation processes occurring in confined or heterogeneous polymeric systems.
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Affiliation(s)
- Simone Napolitano
- Laboratory of Polymer and Soft Matter Dynamics, Faculté des Sciences, Université Libre de Bruxelles (ULB), Boulevard du Triomphe, 1050 Brussels, Belgium
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17
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Chubarova EV, Lebedeva MF, Melenevskaya EY, Shamanin VV. Destructive changes of polymer matrices during preparation, storage, and mechanical testing of neat and C 60-filled polystyrene films. J Appl Polym Sci 2017. [DOI: 10.1002/app.44520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Elena V. Chubarova
- Russian Academy of Sciences, Institute of Macromolecular Compounds; Laboratory of Polymerization Mechanisms and Polymer Synthesis; 199004 Bolshoi pr. 31 St.-Petersburg Russia
| | - Marina F. Lebedeva
- Russian Academy of Sciences, Institute of Macromolecular Compounds; Laboratory of Mechanics of Polymers and Composites; 199004 Bolshoi pr. 31 St.-Petersburg Russia
| | - Elena Yu. Melenevskaya
- Russian Academy of Sciences, Institute of Macromolecular Compounds; Laboratory of Polymerization Mechanisms and Polymer Synthesis; 199004 Bolshoi pr. 31 St.-Petersburg Russia
| | - Valerii V. Shamanin
- Russian Academy of Sciences, Institute of Macromolecular Compounds; Laboratory of Polymerization Mechanisms and Polymer Synthesis; 199004 Bolshoi pr. 31 St.-Petersburg Russia
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18
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Zhang C, Li L, Wang X, Xue G. Stabilization of Poly(methyl methacrylate) Nanofibers with Core–Shell Structures Confined in AAO Templates by the Balance between Geometric Curvature, Interfacial Interactions, and Cooling Rate. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02469] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Chen Zhang
- Key Laboratory of High Performance
Polymer Materials and Technology of Ministry of Education, Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Linling Li
- Key Laboratory of High Performance
Polymer Materials and Technology of Ministry of Education, Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaoliang Wang
- Key Laboratory of High Performance
Polymer Materials and Technology of Ministry of Education, Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Gi Xue
- Key Laboratory of High Performance
Polymer Materials and Technology of Ministry of Education, Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
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19
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Masurel RJ, Gelineau P, Cantournet S, Dequidt A, Long DR, Lequeux F, Montes H. Role of Dynamical Heterogeneities on the Mechanical Response of Confined Polymer. PHYSICAL REVIEW LETTERS 2017; 118:047801. [PMID: 28186782 DOI: 10.1103/physrevlett.118.047801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Indexed: 06/06/2023]
Abstract
Confinement induces various modifications in the dynamics of polymers as compared to bulk. We focus here on the role of dynamical heterogeneities on the mechanics of confined polymers. Using a simple model that allows computation of the mechanical response over 10 decades in frequency, we show that the local mechanical coupling controlling the macroscopic response in the bulk disappears in a confined geometry. The slowest domains significantly contribute to the mechanical response for increasing confinement. As a consequence, the apparent glass transition is broadened and shifted towards lower frequencies as confinement increases. We compare our numerical predictions with experiments performed on poly(ethylacrylate) chains in model filled elastomers. We suggest that the change of elastic coupling between domains induced by confinement should contribute significantly to the polymer mobility shift observed on filled systems.
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Affiliation(s)
- R J Masurel
- Laboratoire Sciences et Ingénierie de la Matière Molle (SIMM), CNRS-UMR 7615, Ecole Supérieure de Physique et Chimie Industrielles de Paris (ESPCI Paris), PSL Research University, Université Pierre et Marie Curie (UPMC), Sorbonne-Universités, 10 rue Vauquelin, F-75005 Paris, France
| | - P Gelineau
- Laboratoire Sciences et Ingénierie de la Matière Molle (SIMM), CNRS-UMR 7615, Ecole Supérieure de Physique et Chimie Industrielles de Paris (ESPCI Paris), PSL Research University, Université Pierre et Marie Curie (UPMC), Sorbonne-Universités, 10 rue Vauquelin, F-75005 Paris, France
| | - S Cantournet
- MINES ParisTech, PSL-Research University, MAT-Centre des Matériaux, CNRS UMR 7633, BP 87 91003 Evry, France
| | - A Dequidt
- Univ. Clermont Ferrand, Inst. Chim. Clermont Ferrand, UMR 6296, F-63171 Aubiere, France
| | - D R Long
- Laboratoire Polymères et Matériaux Avancés, UMR 5268 CNRS/Solvay, 87, rue des frères Perret, F-69192 Saint Fons, France
| | - F Lequeux
- Laboratoire Sciences et Ingénierie de la Matière Molle (SIMM), CNRS-UMR 7615, Ecole Supérieure de Physique et Chimie Industrielles de Paris (ESPCI Paris), PSL Research University, Université Pierre et Marie Curie (UPMC), Sorbonne-Universités, 10 rue Vauquelin, F-75005 Paris, France
| | - H Montes
- Laboratoire Sciences et Ingénierie de la Matière Molle (SIMM), CNRS-UMR 7615, Ecole Supérieure de Physique et Chimie Industrielles de Paris (ESPCI Paris), PSL Research University, Université Pierre et Marie Curie (UPMC), Sorbonne-Universités, 10 rue Vauquelin, F-75005 Paris, France
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20
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Peng S, Zeng Q, Yang X, Hu J, Qiu X, He J. Local Dielectric Property Detection of the Interface between Nanoparticle and Polymer in Nanocomposite Dielectrics. Sci Rep 2016; 6:38978. [PMID: 27958347 PMCID: PMC5154196 DOI: 10.1038/srep38978] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 11/16/2016] [Indexed: 11/18/2022] Open
Abstract
The interface between nanoparticles and polymer matrix is considered to have an important effect on the properties of nanocomposites. In this experimental study, electrostatic force microscopy (EFM) is used to study the local dielectric property of the interface of low density polyethylene (LDPE)/TiO2 nanocomposites at nanometer scale. The results show that the addition of TiO2 nanoparticles leads to a decrease in local permittivity. We then carry out the finite element simulation and confirm that the decrease of local permittivity is related to the effect of interface. According to the results, we propose several models and validate the dielectric effect and range effect of interface. Through the analysis of DSC and solid-state NMR results, we find TiO2 nanoparticles can suppress the mobility of local chain segments in the interface, which influences the dipolar polarization of chain segments in the interface and eventually results in a decrease in local permittivity. It is believed the results would provide important hint to the research of the interface in future research.
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Affiliation(s)
- Simin Peng
- State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China
| | - Qibin Zeng
- Key Laboratory of Standardization and Measurement for Nanotechnology, Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, China.,School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Xiao Yang
- State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China
| | - Jun Hu
- State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China
| | - Xiaohui Qiu
- Key Laboratory of Standardization and Measurement for Nanotechnology, Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Jinliang He
- State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China
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21
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Montolio S, Vicent C, Aseyev V, Alfonso I, Burguete MI, Tenhu H, García-Verdugo E, Luis SV. AuNP–Polymeric Ionic Liquid Composite Multicatalytic Nanoreactors for One-Pot Cascade Reactions. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01759] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Silvia Montolio
- Departamento
de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón de la Plana, Spain
| | - Cristian Vicent
- Servei
Central d’Instrumentació Científica, Universitat Jaume I, E-12071 Castellón de la Plana, Spain
| | - Vladimir Aseyev
- Laboratory
of Polymer Chemistry, Department of Chemistry, University of Helsinki, Helsinki, Finland
| | - Ignacio Alfonso
- Departamento
de Química Biológica y Modelización Molecular,
Instituto de Química Avanzada de Cataluña (IQAC), Consejo Superior de Investigaciones Científicas (CSIC), Jordi Girona
18-26 E-08034 Barcelona, Spain
| | - M. Isabel Burguete
- Departamento
de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón de la Plana, Spain
| | - Heikki Tenhu
- Laboratory
of Polymer Chemistry, Department of Chemistry, University of Helsinki, Helsinki, Finland
| | - Eduardo García-Verdugo
- Departamento
de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón de la Plana, Spain
- Laboratory
of Polymer Chemistry, Department of Chemistry, University of Helsinki, Helsinki, Finland
| | - Santiago V. Luis
- Departamento
de Química Inorgánica y Orgánica, Universitat Jaume I, E-12071 Castellón de la Plana, Spain
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22
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23
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IKEDA T, TAKATA T, TAKAGI J, ADACHI K, TSUKAHARA Y. Enhancement of Oxidation Resistance of Copper by an Organic Thin Layer and its Influence on Electrical Conductivity. KOBUNSHI RONBUNSHU 2016. [DOI: 10.1295/koron.2015-0071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takuya IKEDA
- Department of Molecular Chemistry, Kyoto Institute of Technology
- Tioh Create Co., Ltd
| | - Tomoki TAKATA
- Department of Molecular Chemistry, Kyoto Institute of Technology
| | - Juri TAKAGI
- Department of Molecular Chemistry, Kyoto Institute of Technology
| | - Kaoru ADACHI
- Department of Molecular Chemistry, Kyoto Institute of Technology
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24
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Zheng Z, Song Y, Xu H, Zheng Q. Thickening of the Immobilized Polymer Layer Using Trace Amount of Amine and Its Role in Promoting Gelation of Colloidal Nanocomposites. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Zhong Zheng
- Department
of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yihu Song
- Department
of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University, Hangzhou 310027, China
| | - Huilong Xu
- Department
of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiang Zheng
- Department
of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- MOE
Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University, Hangzhou 310027, China
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25
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26
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Chen J, Li L, Zhou D, Wang X, Xue G. Effect of geometric curvature on vitrification behavior for polymer nanotubes confined in anodic aluminum oxide templates. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 92:032306. [PMID: 26465472 DOI: 10.1103/physreve.92.032306] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Indexed: 06/05/2023]
Abstract
The glass transition behavior of polystyrene (PS) nanotubes confined in cylindrical alumina nanopores was studied as a function of pore diameter (d) and polymer tube thickness (δ). Both the calorimetric glass transition temperature and the microstructure measured by a nonradiative energy transfer method indicated that the polymer nanotube, or concave polymer thin film, exhibited significant differences in vitrification behavior compared to the planar one. A closer interchain proximity and an increased T_{g} were observed for polymer nanotubes with respect to the bulk polymer. T_{g} for polymer nanotubes was primarily dependent on the curvature radius d of the template, while it was less dependent on the thickness δ of the PS tube wall in the range of 11-23 nm. For small nanotubes (d=55nm), the T_{g} increased as high as 18 °C above the bulk value. This vitrified property reverted back to the bulk value when the substrate was chemically removed, which indicated the crucial importance of the interfacial effect imposed by the hard wall with a concave geometry.
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Affiliation(s)
- Jiao Chen
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - Linling Li
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - Dongshan Zhou
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - Xiaoliang Wang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - Gi Xue
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Key Laboratory of High Performance Polymer Materials and Technology (Nanjing University), Ministry of Education, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
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27
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Zhang R, Ramamoorthy A. Dynamics-based selective 2D (1)H/(1)H chemical shift correlation spectroscopy under ultrafast MAS conditions. J Chem Phys 2015; 142:204201. [PMID: 26026440 PMCID: PMC4449354 DOI: 10.1063/1.4921381] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 05/08/2015] [Indexed: 01/30/2023] Open
Abstract
Dynamics plays important roles in determining the physical, chemical, and functional properties of a variety of chemical and biological materials. However, a material (such as a polymer) generally has mobile and rigid regions in order to have high strength and toughness at the same time. Therefore, it is difficult to measure the role of mobile phase without being affected by the rigid components. Herein, we propose a highly sensitive solid-state NMR approach that utilizes a dipolar-coupling based filter (composed of 12 equally spaced 90° RF pulses) to selectively measure the correlation of (1)H chemical shifts from the mobile regions of a material. It is interesting to find that the rotor-synchronized dipolar filter strength decreases with increasing inter-pulse delay between the 90° pulses, whereas the dipolar filter strength increases with increasing inter-pulse delay under static conditions. In this study, we also demonstrate the unique advantages of proton-detection under ultrafast magic-angle-spinning conditions to enhance the spectral resolution and sensitivity for studies on small molecules as well as multi-phase polymers. Our results further demonstrate the use of finite-pulse radio-frequency driven recoupling pulse sequence to efficiently recouple weak proton-proton dipolar couplings in the dynamic regions of a molecule and to facilitate the fast acquisition of (1)H/(1)H correlation spectrum compared to the traditional 2D NOESY (Nuclear Overhauser effect spectroscopy) experiment. We believe that the proposed approach is beneficial to study mobile components in multi-phase systems, such as block copolymers, polymer blends, nanocomposites, heterogeneous amyloid mixture of oligomers and fibers, and other materials.
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Affiliation(s)
- Rongchun Zhang
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
| | - Ayyalusamy Ramamoorthy
- Biophysics and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
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28
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Li L, Chen J, Deng W, Zhang C, Sha Y, Cheng Z, Xue G, Zhou D. Glass Transitions of Poly(methyl methacrylate) Confined in Nanopores: Conversion of Three- and Two-Layer Models. J Phys Chem B 2015; 119:5047-54. [DOI: 10.1021/jp511248q] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Linling Li
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Jiao Chen
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Weijia Deng
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Chen Zhang
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Ye Sha
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Zhen Cheng
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Gi Xue
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
| | - Dongshan Zhou
- Key
Laboratory of High Performance Polymer Materials and Technology of
Ministry of Education, Department of Polymer Science and Engineering,
School of Chemistry and Chemical Engineering, State Key Laboratory
of Coordination Chemistry, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
- Xinjiang
Laboratory of Phase Transitions and Microstructures in Condensed Matters,
College of Physical Science and Technology, Yili Normal University, Yining 835000, P. R. China
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29
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Chremos A, Glynos E, Green PF. Structure and dynamical intra-molecular heterogeneity of star polymer melts above glass transition temperature. J Chem Phys 2015; 142:044901. [DOI: 10.1063/1.4906085] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Alexandros Chremos
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Emmanouil Glynos
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Peter F. Green
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
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30
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Gao X, Xie B, Su Y, Fu D, Wang D. Nanoparticle Enlarged Interfacial Effect on Phase Transition of 1-Octadecanol/Silica Composites. J Phys Chem B 2015; 119:2074-80. [DOI: 10.1021/jp512124s] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Xia Gao
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Baoquan Xie
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Yunlan Su
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Dongsheng Fu
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Dujin Wang
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
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31
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Sha Y, Li L, Wang X, Wan Y, Yu J, Xue G, Zhou D. Growth of Polymer Nanorods with Different Core–Shell Dynamics via Capillary Force in Nanopores. Macromolecules 2014. [DOI: 10.1021/ma5017715] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ye Sha
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Key Laboratory of High Performance Polymer Materials
and Technology (Nanjing University), Ministry of Education, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructure, Nanjing University, Nanjing 210093, P. R. China
| | - Linling Li
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Key Laboratory of High Performance Polymer Materials
and Technology (Nanjing University), Ministry of Education, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructure, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaoliang Wang
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Key Laboratory of High Performance Polymer Materials
and Technology (Nanjing University), Ministry of Education, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructure, Nanjing University, Nanjing 210093, P. R. China
| | - Yuanxin Wan
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Key Laboratory of High Performance Polymer Materials
and Technology (Nanjing University), Ministry of Education, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructure, Nanjing University, Nanjing 210093, P. R. China
| | - Jie Yu
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Key Laboratory of High Performance Polymer Materials
and Technology (Nanjing University), Ministry of Education, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructure, Nanjing University, Nanjing 210093, P. R. China
| | - Gi Xue
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Key Laboratory of High Performance Polymer Materials
and Technology (Nanjing University), Ministry of Education, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructure, Nanjing University, Nanjing 210093, P. R. China
| | - Dongshan Zhou
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, Key Laboratory of High Performance Polymer Materials
and Technology (Nanjing University), Ministry of Education, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructure, Nanjing University, Nanjing 210093, P. R. China
- School
of Physical Science and Technology, Xinjiang Laboratory of Phase
Transitions and Microstructures
in Condensed Matters, Yili Normal University, Yining 835000, P. R. China
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32
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Batistakis C, Michels MAJ, Lyulin AV. Confinement-Induced Stiffening of Thin Elastomer Films: Linear and Nonlinear Mechanics vs Local Dynamics. Macromolecules 2014. [DOI: 10.1021/ma5003744] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chrysostomos Batistakis
- Theory
of Polymers and Soft Matter (TPS), Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Dutch Polymer
Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - M. A. J. Michels
- Theory
of Polymers and Soft Matter (TPS), Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Alexey V. Lyulin
- Theory
of Polymers and Soft Matter (TPS), Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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33
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Feng S, Chen Y, Mai B, Wei W, Zheng C, Wu Q, Liang G, Gao H, Zhu F. Glass transition of poly(methyl methacrylate) nanospheres in aqueous dispersion. Phys Chem Chem Phys 2014; 16:15941-7. [DOI: 10.1039/c4cp01849d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Guseva DV, Komarov PV, Lyulin AV. Molecular-dynamics simulations of thin polyisoprene films confined between amorphous silica substrates. J Chem Phys 2014; 140:114903. [PMID: 24655202 DOI: 10.1063/1.4868231] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- D V Guseva
- Theory of Polymers and Soft Matter, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - P V Komarov
- Department of Theoretical Physics, Tver State University, Sadovyj per. 35, 170002 Tver, Russia and Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova st. 28, 119991 Moscow, Russia
| | - Alexey V Lyulin
- Theory of Polymers and Soft Matter, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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35
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Gao J, Bai H, Zhou X, Yang G, Xu C, Zhang Q, Chen F, Fu Q. Observation of strong nano-effect via tuning distributed architecture of graphene oxide in poly(propylene carbonate). NANOTECHNOLOGY 2014; 25:025702. [PMID: 24334528 DOI: 10.1088/0957-4484/25/2/025702] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
For optimum reinforcement in polymer nanocomposite, a critical challenge is to realize the full 'nano-effect' of nanofillers at a high content, which is largely hindered by the strong tendency to aggregation of nanofillers. Here, by using a solvent-exchange and solution casting approach, we could incorporate a high-content graphene oxide (GO) into a soft biodegradable CO2-based poly(propylene carbonate) (PPC) up to 20 wt% with excellent dispersion. Based on this, the distributed architecture of GO could be tuned from a 'GO dotted dispersion' and 'GO network' to strong 'GO co-continuous structure' with increasing GO content. As a result, a very strong 'nano-effect' of GO in the PPC matrix was observed: (1) the glass transition temperature of PPC was improved from 25 to 45 ° C for slightly confined molecular chains, and even to 100 ° C for highly confined ones; (2) the modified PPC showed drastically enhanced high-temperature mechanical properties, comparable to those of traditional polymers such as polypropylene (PP) and biopolymer poly(lactic acid) (PLA); and (3) such modified PPC exhibited an exciting solvent resistance compared to neat PPC. Our work provides an example to improve the high-temperature properties of a polymer via formation of filler co-continuous structure.
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Affiliation(s)
- Jian Gao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
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Li L, Zhou D, Huang D, Xue G. Double Glass Transition Temperatures of Poly(methyl methacrylate) Confined in Alumina Nanotube Templates. Macromolecules 2013. [DOI: 10.1021/ma4020017] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Linling Li
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructure, Nanjing University, Nanjing, 210093, P. R. China
| | - Dongshan Zhou
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructure, Nanjing University, Nanjing, 210093, P. R. China
| | - Dinghai Huang
- Department
of Polymer Material Science and Engineering, School of Material Science
and Engineering, Tianjin University, Tianjin, 300072, P. R. China
| | - Gi Xue
- Department
of Polymer Science and Engineering, School of Chemistry and Chemical
Engineering, State Key Laboratory of Coordination Chemistry, Nanjing
National Laboratory of Microstructure, Nanjing University, Nanjing, 210093, P. R. China
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Zhu L, Gu Q, Sun P, Chen W, Wang X, Xue G. Characterization of the mobility and reactivity of water molecules on TiO2 nanoparticles by 1H solid-state nuclear magnetic resonance. ACS APPLIED MATERIALS & INTERFACES 2013; 5:10352-10356. [PMID: 24060268 DOI: 10.1021/am403449j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Understanding interfacial water behavior is essential to improving our understanding of the surface chemistry and interfacial properties of nanomaterials. Here using 1H solid-state nuclear magnetic resonance (1H SSNMR), we successfully monitored ligand exchange reaction between oleylamine (OLA) and adsorbed water on titanium dioxide nanoparticles (TiO2 NPs). Three different types of interfacial waters with different reactivities were distinguished. The mobility of the adsorbed water molecules was characterized by dipolar filtered 1H SSNMR. Our experimental results demonstrate that the adsorbed water can be categorized into three different layers: (i) rigid water species with restricted mobility closest to the surface of TiO2 NPs, (ii) less mobile water species weakly confined on TiO2 NPs, and (iii) water molecules with high mobility. Water in the third layer could be replaced by OLA, while water in the first and second layers remained intact. The finding that the interfacial water with the highest mobility has the strongest reactivity has guiding significance for tailoring the hydrophilic and hydrophobic properties of TiO2 NPs.
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Affiliation(s)
- Lili Zhu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, The State Key Laboratory of Coordination Chemistry, Nanjing University , Nanjing 210093, P. R. Chin a
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