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You Y, Duan H, Tan H, Huang Q, Li Q, Wang X, Huang J, Xu G, Wang G. Sustained Release-Driven Interface Engineering Enables Fast Charging Lithium Metal Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310843. [PMID: 38247199 DOI: 10.1002/smll.202310843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/03/2024] [Indexed: 01/23/2024]
Abstract
LiNO3 has attracted intensive attention as a promising electrolyte additive to regulate Li deposition behavior as it can form favorable Li3N, LiNxOy species to improve the interfacial stability. However, the inferior solubility in carbonate-based electrolyte restricts its application in high-voltage Li metal batteries. Herein, an artificial composite layer (referred to as PML) composed of LiNO3 and PMMA is rationally designed on Li surface. The PML layer serves as a reservoir for LiNO3 release gradually to the electrolyte during cycling, guaranteeing the stability of SEI layer for uniform Li deposition. The PMMA matrix not only links the nitrogen-containing species for uniform ionic conductivity but also can be coordinated with Li for rapid Li ions migration, resulting in homogenous Li-ion flux and dendrite-free morphology. As a result, stable and dendrite-free plating/stripping behaviors of Li metal anodes are achieved even at an ultrahigh current density of 20 mA cm-2 (>570 h) and large areal capacity of 10 mAh cm-2 (>1200 h). Moreover, the Li||LiFePO4 full cell using PML-Li anode undergoes stable cycling for 2000 cycles with high-capacity retention of 94.8%. This facile strategy will widen the potential application of LiNO3 in carbonate-based electrolyte for practical LMBs.
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Affiliation(s)
- Yu You
- Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Haofan Duan
- Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Hongming Tan
- Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Qiao Huang
- Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Qingyu Li
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemical and Pharmaceutical Science, Guangxi Normal University, Guilin, Guangxi, 541004, China
| | - Xianyou Wang
- National Base for International Science & Technology Cooperation, National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery, Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion, School of Chemistry, Xiangtan University, Xiangtan, Hunan, 411105, China
| | - Jianyu Huang
- Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Guobao Xu
- Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University, Xiangtan, 411105, China
| | - Gang Wang
- Hunan Provincial Key laboratory of Thin Film Materials and Devices, School of Material Sciences and Engineering, Xiangtan University, Xiangtan, 411105, China
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Wang M, Li J, Zhang C, Liu G, Napolitano S, Wang D. Physical Aging of Polystyrene Confined in Anodic Aluminum Oxide Nanopores. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3471-3480. [PMID: 36802636 DOI: 10.1021/acs.langmuir.2c03505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We investigated the glassy dynamics of polystyrene (PS) confined in anodic aluminum oxide (AAO) nanopores by differential scanning calorimetry. Based on the outcome of our experiments, we show that the cooling rate applied to process the 2D confined PS melt has a significant impact on both the glass transition and the structural relaxation in the glassy state. A single glass transition temperature (Tg) is observed in quenched samples, while slow-cooled PS chains show two Tgs corresponding to a core-shell structure. The former phenomenon resembles what is observed in freestanding structures, while the latter is imputed to the adsorption of PS onto AAO walls. A more complex picture was drawn for physical aging. In the case of quenched samples, we observed a non-monotonic trend of the apparent aging rate that in 400 nm pores, reaches a value almost twice as larger than what is measured in bulk and decreases upon further confinement in smaller nanopores. For slow-cooled samples, by adequately varying the aging conditions, we were able to control the equilibration kinetics and either separate the two aging processes or induce an intermediate aging regime. We propose a possible explanation of these findings in terms of distribution in free volume and the presence of different aging mechanisms.
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Affiliation(s)
- Ming Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Chunbo Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Guoming Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Simone Napolitano
- Laboratory of Polymer and Soft Matter Dynamics, Experimental Soft Matter and Thermal Physics (EST), Université Libre de Bruxelles (ULB), Brussels 1050, Belgium
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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3
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Hou C, Zhang W, Dai X, Qiu J, Russell TP, Sun X, Yan S. Spatially Confined Fabrication of Polar Poly(Vinylidene Fluoride) Nanotubes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2205790. [PMID: 36351233 DOI: 10.1002/smll.202205790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Polar poly(vinylidene fluoride) (PVDF) nanotubes have attracted significant attention due to their excellent piezoelectric and ferroelectric properties, yet a tunable fabrication of homogeneous polar PVDF nanotubes remains a challenge. Here, a simple method is reported to fabricate polar PVDF nanotubes using anodize aluminum oxide (AAO) membranes as templates that are removed by etching in a potassium hydroxide (KOH) solution and then ageing at room temperature. PVDF nanotubes originally crystallized in the AAO membrane are pure α-crystals with very low crystallinity, yet after being released from the templates, the crystallinity of the nanotubes markedly increases with ageing at room temperature, leading to the formation of β-PVDF crystals in a very short time, with the formation of γ crystals after longer ageing times. A large amount of γ crystals formed when the released PVDF nanotubes are heated to ≈130 °C. The formation of polar PVDF nanotubes released from the AAO templates treated with higher concentrations of alkaline solution results from the reaction of the surface of the PVDF nanotubes with the alkaline solution and structure reorganization under confined conditions. This large-scale preparation of β- and γ-PVDF opens a new pathway to produce polar PVDF nanomaterials.
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Affiliation(s)
- Chunyue Hou
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wenxian Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiying Dai
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jieshan Qiu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Thomas P Russell
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, MA, 01003, USA
| | - Xiaoli Sun
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shouke Yan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao, 266042, China
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4
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Molecular Dynamics and Structure of Poly(Methyl Methacrylate) Chains Grafted from Barium Titanate Nanoparticles. Molecules 2022; 27:molecules27196372. [PMID: 36234912 PMCID: PMC9571223 DOI: 10.3390/molecules27196372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/21/2022] [Accepted: 09/23/2022] [Indexed: 12/04/2022] Open
Abstract
Core−shell nanocomposites comprising barium titanate, BaTiO3 (BTO), and poly(methyl methacrylate) (PMMA) chains grafted from its surface with varied grafting densities were prepared. BTO nanocrystals are high-k inorganic materials, and the obtained nanocomposites exhibit enhanced dielectric permittivity, as compared to neat PMMA, and a relatively low level of loss tangent in a wide range of frequencies. The impact of the molecular dynamics, structure, and interactions of the BTO surface on the polymer chains was investigated. The nanocomposites were characterized by broadband dielectric and vibrational spectroscopies (IR and Raman), transmission electron microscopy, differential scanning calorimetry, and nuclear magnetic resonance. The presence of ceramic nanoparticles in core–shell composites slowed down the segmental dynamic of PMMA chains, increased glass transition temperature, and concurrently increased the thermal stability of the organic part. It was also evidenced that, in addition to segmental dynamics, local β relaxation was affected. The grafting density influenced the self-organization and interactions within the PMMA phase, affecting the organization on a smaller size scale of polymeric chains. This was explained by the interaction of the exposed surface of nanoparticles with polymer chains.
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Winkler R, Chat K, Unni AB, Dulski M, Laskowska M, Laskowski L, Adrjanowicz K. Glass Transition Dynamics of Poly(phenylmethylsiloxane) Confined within Alumina Nanopores with Different Atomic Layer Deposition (ALD) Coatings. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roksana Winkler
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center for Education and Interdisciplinary Research (SMCEBI), 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Katarzyna Chat
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center for Education and Interdisciplinary Research (SMCEBI), 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Aparna Beena Unni
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center for Education and Interdisciplinary Research (SMCEBI), 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Mateusz Dulski
- Institute of Materials Engineering, University of Silesia in Katowice, 40-007 Katowice, Poland
| | - Magdalena Laskowska
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | - Lukasz Laskowski
- Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland
| | - Karolina Adrjanowicz
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center for Education and Interdisciplinary Research (SMCEBI), 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
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León-Boigues L, Navarro R, Mijangos C. Free radical nanocopolymerization in AAO porous materials: Kinetic, copolymer composition and monomer reactivity ratios. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Liu Y, Wu Y, Yao J, Yin J, Lu J, Mao J, Yao M, Luo F. Confined Crystallization and Melting Behaviors of 3-Pentadecylphenol in Anodic Alumina Oxide Nanopores. ACS OMEGA 2021; 6:18235-18247. [PMID: 34308054 PMCID: PMC8296606 DOI: 10.1021/acsomega.1c02112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
To explore the effects of end groups on the confined crystallization of an alkyl chain, 3-pentadecylphenol (PDP) was infiltrated into the anodic aluminum oxide template (AAO) to investigate the melting and crystallization behaviors of PDP in a nanoconfined environment. Wide-angle X-ray diffraction (WAXD) found that the solid-solid phase transition of PDP occurred under confined conditions, and the absence of the (00L) reflections indicated that the stacking of the end groups of the alkyl chain layered structure was seriously disturbed. Thermal analysis (TG) showed that the thermal stability of the confined samples decreased due to the confinement effect, and the introduction of end groups made the confinement effect more obvious. Differential scanning calorimeter (DSC) results well reflected the space-time equivalence in the PDP crystallization processes, i.e., the solid-solid phase transition can be achieved by reducing the cooling rate or confining PDP in the nanometer space. Compared with C15, the introduction of the end groups with a phenol ring led to the disappearance of the solid-solid phase transition of an alkyl chain at high cooling rates. In the confined environment, the introduction of the end groups with a phenol ring caused the melting double peaks of the alkyl chain to become a single melting peak, and it also caused the disappearance of the surface freezing monolayer for alkyl chains. Through the analysis of crystallinity, it was found that AAO-PDP was more sensitive to AAO pore size changes than AAO-C15, the X c of AAO-PDP had a good linear relationship with the pore size d, but the X c of the AAO-C15 had a nonlinear relationship with the pore size d. Attenuated total reflection (ATR)-IR proved that in the confined environment, the order of the alkyl chain decreased and the degree of chain distortion increased.
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Affiliation(s)
- Yongdong Liu
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
| | - Yonghong Wu
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
| | - Jianqi Yao
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
| | - Jiajie Yin
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
| | - Jing Lu
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
| | - Jie Mao
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
| | - Min Yao
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
- Ningxia
Baofeng Energy Group, Yinchuan 750001, China
| | - Faliang Luo
- State
Key Laboratory of High-Efficiency Coal Utilization and Green Chemical
Engineering, Ningxia University, 489 Helanshan West Road, Yinchuan 750021, China
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8
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León-Boigues L, Pérez LA, Mijangos C. In Situ Synthesis of Poly(butyl methacrylate) in Anodic Aluminum Oxide Nanoreactors by Radical Polymerization: A Comparative Kinetics Analysis by Differential Scanning Calorimetry and 1H-NMR. Polymers (Basel) 2021; 13:polym13040602. [PMID: 33671387 PMCID: PMC7923008 DOI: 10.3390/polym13040602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/04/2021] [Accepted: 02/12/2021] [Indexed: 01/21/2023] Open
Abstract
In this work, we explore the ability to generate well-defined poly(butyl methacrylate) (PBMA) nanostructures by “in situ” polymerization of butyl methacrylate monomer (BMA). PBMA nanostructures of high and low aspect ratios have been successfully obtained through the free radical polymerization (FRP) of a BMA monomer in anodic aluminum oxide (AAO) nanoreactors of suitable size. A polymerization kinetics process has been followed by differential scanning calorimetry (DSC) and proton Nuclear Magnetic Resonance spectroscopy (1H-NMR).The determination of the kinetics of polymerization through DSC is based on a quick and direct analysis of the exothermic polymerization process, whereas the analysis through 1H-NMR also allows the unambiguous chemical analysis of the resulting polymer. When compared to bulk polymerization, both techniques demonstrate confinement effects. Moreover, DSC and 1H-NMR analysis give the same kinetics results and show a gel-effect in all the cases. The number average molecular weight (Mn) of the PBMA obtained in AAO of 60–300 nm are between 30·103–175·103 g/mol. Even if the Mn value is lower with respect to that obtained in bulk polymerization, it is high enough to maintain the polymer properties. As determined by SEM morphological characterization, once extracted from the AAO nanoreactor, the polymer nanostructures show controlled homogeneous aspect/size all throughout the length of nanopillar over a surface area of few cm2. The Young’s modulus of low aspect ratio PBMA nanopillars determined by AFM gives a value of 3.1 ± 1.1 MPa. In this work, a 100% of PBMA polymer nanostructures are obtained from a BMA monomer in AAO templates through a quick double process: 30 min of monomer immersion at room temperature and 90 min of polymerization reaction at 60 °C. While the same nanostructures are obtained by polymer infiltration of PBMA at 200 °C in about 6 h, polymerization conditions are much softer than those corresponding to the polymer infiltration process. Furthermore, the 1H-NMR technique has been consolidated as a tool for studying the kinetics of the copolymerization reactions in confinement and the determination of monomer reactivity ratios.
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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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10
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Safari M, Maiz J, Shi G, Juanes D, Liu G, Wang D, Mijangos C, Alegría Á, Müller AJ. How Confinement Affects the Nucleation, Crystallization, and Dielectric Relaxation of Poly(butylene succinate) and Poly(butylene adipate) Infiltrated within Nanoporous Alumina Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15168-15179. [PMID: 31621336 DOI: 10.1021/acs.langmuir.9b02215] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This work describes the successful melt infiltration of poly(butylene succinate) (PBS) and poly(butylene adipate) (PBA) within 70 nm diameter anodic aluminum oxide (AAO) templates. The infiltrated samples were characterized by SEM, Raman, and FTIR spectroscopy. The crystallization behaviors and crystalline structures of both polymers, bulk and confined, were analyzed by differential scanning calorimetry (DSC) and grazing incidence wide angle X-ray scattering (GIWAXS). DSC revealed that a change in the nucleation process occurred from heterogeneous nucleation for bulk samples to homogeneous nucleation for infiltrated PBA and to surface-induced nucleation for infiltrated PBS. GIWAXS results indicate that PBS nanofibers crystallize in the α-phase, as well as their bulk samples. However, PBA nanofibers crystallize just in the β-phase, whereas PBA bulk samples crystallize in a mixture of α- and β-phases. The crystal orientation within the pores was determined, and differences between PBS and PBA were also found. Finally, broadband dielectric spectroscopy was applied to study the segmental dynamics for bulk and infiltrated samples. The glass temperature was found to significantly decrease in the PBS case upon infiltration, while that of PBA remained unchanged. These differences were correlated with the higher affinity of PBS to the AAO walls than PBA, in accordance with their nucleation behavior (surface-induced versus homogeneous nucleation, respectively).
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Affiliation(s)
- Maryam Safari
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry , University of the Basque Country UPV/EHU , Paseo Manuel de Lardizábal, 3 , 20018 Donostia-San Sebastián , Spain
| | - Jon Maiz
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry , University of the Basque Country UPV/EHU , Paseo Manuel de Lardizábal, 3 , 20018 Donostia-San Sebastián , Spain
| | - Guangyu Shi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, the Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Diana Juanes
- Instituto de Ciencia y Tecnología de Polímeros , Consejo Superior de Investigaciones Científicas, ICTP-CSIC , Juan de la Cierva 3 , Madrid 28006 , Spain
| | - Guoming Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, the Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, the Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros , Consejo Superior de Investigaciones Científicas, ICTP-CSIC , Juan de la Cierva 3 , Madrid 28006 , Spain
- Departamento de Física de Materiales , University of the Basque Country UPV/EHU and Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) - Materials Physics Center (MPC) , Paseo Manuel de Lardizabal 5 , 20018 San Sebastián , Spain
| | - Ángel Alegría
- Departamento de Física de Materiales , University of the Basque Country UPV/EHU and Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) - Materials Physics Center (MPC) , Paseo Manuel de Lardizabal 5 , 20018 San Sebastián , Spain
| | - Alejandro J Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry , University of the Basque Country UPV/EHU , Paseo Manuel de Lardizábal, 3 , 20018 Donostia-San Sebastián , Spain
- IKERBASQUE, Basque Foundation for Science , 48013 Bilbao , Spain
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11
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Study on the effect of side-chain group on the segmental dynamics of selected methacrylate polymers at ambient and high pressures. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121860] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Shi G, Guan Y, Liu G, Müller AJ, Wang D. Segmental Dynamics Govern the Cold Crystallization of Poly(lactic acid) in Nanoporous Alumina. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00542] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Guangyu Shi
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Guan
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guoming Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Alejandro J. Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, Donostia-San Sebastián 20018, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao 48013, Spain
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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13
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Tarnacka M, Maksym P, Zięba A, Mielańczyk A, Geppert-Rybczyńska M, Leon-Boigues L, Mijangos C, Kamiński K, Paluch M. The application of spatially restricted geometries as a unique route to produce well-defined poly(vinyl pyrrolidones) via free radical polymerisation. Chem Commun (Camb) 2019; 55:6441-6444. [PMID: 31098603 DOI: 10.1039/c9cc02625h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report, for the first time, the metal-free green synthesis of linear poly(vinyl pyrrolidone) (PVP) homopolymers of molecular weight higher than 100 kg mol-1 and narrow dispersities via thermal and photo-induced free radical polymerisation carried out within alumina nanoporous membranes acting as "nanoreactors".
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Affiliation(s)
- Magdalena Tarnacka
- Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland.
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14
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Dai X, Li H, Ren Z, Russell TP, Yan S, Sun X. Confinement Effects on the Crystallization of Poly(3-hydroxybutyrate). Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01083] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xiying Dai
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Huihui Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhongjie Ren
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Thomas P. Russell
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Shouke Yan
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoli Sun
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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15
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Talik A, Tarnacka M, Grudzka-Flak I, Maksym P, Geppert-Rybczynska M, Wolnica K, Kaminska E, Kaminski K, Paluch M. The Role of Interfacial Energy and Specific Interactions on the Behavior of Poly(propylene glycol) Derivatives under 2D Confinement. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00658] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Agnieszka Talik
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Magdalena Tarnacka
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Iwona Grudzka-Flak
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Paulina Maksym
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | | | - Kamila Wolnica
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Ewa Kaminska
- Department of Pharmacognosy and Phytochemistry, Medical University of Silesia in Katowice, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Jagiellonska 4, 41-200 Sosnowiec, Poland
| | - Kamil Kaminski
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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16
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Glor EC, Angrand GV, Fakhraai Z. Exploring the broadening and the existence of two glass transitions due to competing interfacial effects in thin, supported polymer films. J Chem Phys 2018; 146:203330. [PMID: 28571332 DOI: 10.1063/1.4979944] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this report, we use ellipsometry to characterize the glass transition in ultra-thin films of poly(2-vinyl pyridine) (P2VP) supported on a silicon substrate. P2VP is known to have attractive substrate interactions, which can increase the Tg of ultra-thin films compared to the bulk value. Here, we use an extended temperature range to show that the glass transition can be extremely broad, indicating that a large gradient of the dynamics exists through the film with slow dynamics near the substrate and enhanced dynamics at the free surface. To observe the effect of these two interfaces on the average thin film dynamics, cooling rate-dependent Tg (CR-Tg) measurements were used to indirectly probe the average relaxation times of the films. We demonstrate that ultra-thin films have lower fragility compared to bulk films, and, when cooled at slow cooling rates (<1 K/min), exhibit extreme broadening of the dynamics (<70 nm) and eventually complete decoupling between the free surface and substrate regions to produce films with two distinct Tg's (<16 nm). Tg,high increases with decreasing thickness in a similar manner to what has been observed in previous studies on P2VP, and Tg,low decreases with decreasing film thickness in a similar manner to what has been observed in polymer films with enhanced free surfaces and neutral substrate interactions. These observations indicate that the dynamics in thin films of P2VP can be strongly coupled over a length scale of ∼10-20 nm, resulting in two co-existing layers with two distinct glass transitions when the range of the dynamical gradients become too large to sustain (breadth of the transition > 50 K).
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Affiliation(s)
- Ethan C Glor
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Gabriel V Angrand
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Zahra Fakhraai
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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17
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Molecular self-assembly of one-dimensional polymer nanostructures in nanopores of anodic alumina oxide templates. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.10.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Woo HS, Moon YB, Seo S, Lee HT, Kim DW. Semi-Interpenetrating Polymer Network Composite Gel Electrolytes Employing Vinyl-Functionalized Silica for Lithium-Oxygen Batteries with Enhanced Cycling Stability. ACS APPLIED MATERIALS & INTERFACES 2018; 10:687-695. [PMID: 29235851 DOI: 10.1021/acsami.7b15573] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A major challenge of lithium-oxygen batteries is to develop a stable electrolyte not only to suppress solvent evaporation and lithium dendrite growth, but also to resist the attack by superoxide anion radical formed at the positive electrode. The present study demonstrates the enhancement of cycling stability by addressing the above challenges through the use of three-dimensional semi-interpenetrating polymer network (semi-IPN) composite gel polymer electrolyte when fabricating the lithium-oxygen cell. The semi-IPN composite gel electrolyte synthesized from poly(methyl methacrylate), divinylbenzene, and vinyl-functionalized silica effectively encapsulated electrolyte solution and exhibited stable interfacial characteristics toward lithium electrodes. Matrix polymers in the semi-IPN composite gel electrolyte also retained high stability without any decomposition by superoxide anion radicals during cycling. The lithium-oxygen cell employing semi-IPN composite gel polymer electrolyte was shown to cycle with good capacity retention at 0.25 mAh cm-2. The semi-IPN composite gel electrolyte is one of the promising electrolytes for the stable lithium-oxygen battery with high energy density.
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Affiliation(s)
- Hyun-Sik Woo
- Department of Chemical Engineering, Hanyang University , Seoul 04763, Republic of Korea
| | - Yong-Bok Moon
- Department of Chemical Engineering, Hanyang University , Seoul 04763, Republic of Korea
| | - Samuel Seo
- Research & Development Division, Hyundai Motor Company , Uiwang-si, Gyeonggi-do 16082, Republic of Korea
| | - Ho-Taek Lee
- Research & Development Division, Hyundai Motor Company , Uiwang-si, Gyeonggi-do 16082, Republic of Korea
| | - Dong-Won Kim
- Department of Chemical Engineering, Hanyang University , Seoul 04763, Republic of Korea
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19
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Zhang C, Sha Y, Zhang Y, Cai T, Li L, Zhou D, Wang X, Xue G. Nanostructures and Dynamics of Isochorically Confined Amorphous Drug Mediated by Cooling Rate, Interfacial, and Intermolecular Interactions. J Phys Chem B 2017; 121:10704-10716. [PMID: 29111765 DOI: 10.1021/acs.jpcb.7b08545] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The production and stabilization of amorphous drugs by the nanoconfinement effect has recently become a research hotspot in pharmaceutical sciences. Herein, two guest/host systems, indomethacin (IMC) and griseofulvin (GSF) confined in anodic aluminum oxide (AAO) templates with different pore diameters (25-250 nm) are investigated by differential scanning calorimetry (DSC) and broadband dielectric spectroscopy (BDS). The crystallization of the confined drugs is suppressed, and their glass transition temperatures show an evident pore-size dependency. Moreover, a combination of dielectric and calorimetric results demonstrates that the significant change in the temperature dependence of the structural relaxation time during the cooling process is attributed to the vitrification of the interfacial molecules and the local density heterogeneity under isochoric confinement. Interestingly, compared with the case of IMC/AAO, which can be described by a typical two-layer model, GSF/AAO presents an rare scenario of three glass transition temperatures under fast cooling (40-10 K/min), indicating that there exists a thermodynamic nonequilibrium interlayer between the bulk-like core and interfacial layer. In contrast, the slow cooling process (0.5 K/min) would lead confined GSF into the stable core-shell nanostructure. Using surface modification, the interfacial effect is confirmed to be an important reason for the different phenomena between these two guest/host systems, and intermolecular hydrogen bonding is also suggested to be emphasized considering the long-range effect of interfacial interactions. Our results not only provide insight into the glass transition behavior of geometrically confined supercooled liquids, but also offer a means of adjusting and stabilizing the nanostructure of amorphous drugs under two-dimensional confinement.
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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
| | - 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
| | - Yue 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
| | - Ting Cai
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, and Department of Pharmaceutics, College of Pharmacy, China Pharmaceutical University , Nanjing 210009, 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
| | - 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
| | - 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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20
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Lastra ML, Molinuevo MS, Blaszczyk-Lezak I, Mijangos C, Cortizo MS. Nanostructured fumarate copolymer-chitosan crosslinked scaffold: An in vitro osteochondrogenesis regeneration study. J Biomed Mater Res A 2017; 106:570-579. [PMID: 28984066 DOI: 10.1002/jbm.a.36260] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/25/2017] [Accepted: 09/08/2017] [Indexed: 12/12/2022]
Abstract
In the tissue engineering field, the design of the scaffold inspired on the natural occurring tissue is of vital importance. Ideally, the scaffold surface must promote cell growth and differentiation, while promote angiogenesis in the in vivo implant of the scaffold. On the other hand, the material selection must be biocompatible and the degradation times should meet tissue reparation times. In the present work, we developed a nanofibrous scaffold based on chitosan crosslinked with diisopropylfumarate-vinyl acetate copolymer using anodized aluminum oxide (AAO) templates. We have previously demonstrated its biocompatibility properties with low cytotoxicity and proper degradation times. Now, we extended our studies to demonstrate that it can be successfully nanostructured using the AAO templates methodology, obtaining a nanorod-like scaffold with a diameter comparable to those of collagen fibers of the bone matrix (170 and 300 nm). The nanorods obtained presented a very homogeneous pattern in diameter and length, and supports cell attachment and growth. We also found that both osteoblastic and chondroblastic matrix production were promoted on bone marrow progenitor cells and primary condrocytes growing on the scaffolds, respectively. In addition, the nanostructured scaffold presented no cytotoxicity as it was evaluated using a model of macrophages on culture. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 570-579, 2018.
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Affiliation(s)
- María Laura Lastra
- Laboratorio de Investigación en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, UNLP, 47 y 115, 1900, La Plata, Argentina.,Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT-La Plata, CC16 suc. 4, 1900, La Plata, Argentina
| | - María Silvina Molinuevo
- Laboratorio de Investigación en Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Ciencias Exactas, UNLP, 47 y 115, 1900, La Plata, Argentina
| | - Iwona Blaszczyk-Lezak
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, Madrid, 28006, España
| | - Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros, CSIC, Juan de la Cierva 3, Madrid, 28006, España
| | - María Susana Cortizo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), CCT-La Plata, CC16 suc. 4, 1900, La Plata, Argentina
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21
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Teng C, Li L, Wang Y, Wang R, Chen W, Wang X, Xue G. How thermal stress alters the confinement of polymers vitrificated in nanopores. J Chem Phys 2017; 146:203319. [PMID: 28571335 DOI: 10.1063/1.4978230] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Understanding and controlling the glass transition temperature (Tg) and dynamics of polymers in confined geometries are of significance in both academia and industry. Here, we investigate how the thermal stress induced by a mismatch in the coefficient of thermal expansion affects the Tg behavior of polystyrene (PS) nanorods located inside cylindrical alumina nanopores. The size effects and molecular weight dependence of the Tg are also studied. A multi-step relaxation process was employed to study the relationship between thermal stress and cooling rate. At fast cooling rates, the imparted thermal stress would overcome the yield stress of PS and peel chains off the pore walls, while at slow cooling rates, chains are kept in contact with the pore walls due to timely dissipation of the produced thermal stress during vitrification. In smaller nanopores, more PS chains closely contact with pore walls, then stronger internal thermal stress would be generated between core and shell of PS nanorod, which results in a larger deviation between two Tgs. The core part of PS shows lower Tg than bulk value, which can induce faster dynamics in the center region. A complex and important role stress plays is supposed in complex confinement condition, e.g., in nanopores, during vitrification.
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Affiliation(s)
- Chao Teng
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China
| | - Linling Li
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China
| | - Yong Wang
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research Center, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Rong Wang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China
| | - Wei Chen
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China
| | - Xiaoliang Wang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China
| | - Gi Xue
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, China
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22
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Molecular confinement of solid and gaseous phases of self-standing bulk nanoporous polymers inducing enhanced and unexpected physical properties. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.02.046] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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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: 244] [Impact Index Per Article: 34.9] [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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24
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Wei W, Feng S, Zhou Q, Liang H, Long Y, Wu Q, Gao H, Liang G, Zhu F. Study on glass transition and physical aging of polystyrene nanowires by differential scanning calorimetry. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1199-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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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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26
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Sanz B, Ballard N, Asua JM, Mijangos C. Effect of Confinement on the Synthesis of PMMA in AAO Templates and Modeling of Free Radical Polymerization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02282] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Belén Sanz
- Instituto
de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas (CSIC), Juan de la Cierva 3, Madrid 28006, Spain
- Edificio
Joxe Mari Korta, POLYMAT, University of the Basque Country EHU-UPV, Avda. Tolosa 72, 20018 Donostia-San Sebastian, Guipúzcoa, Spain
| | - Nicholas Ballard
- Edificio
Joxe Mari Korta, POLYMAT, University of the Basque Country EHU-UPV, Avda. Tolosa 72, 20018 Donostia-San Sebastian, Guipúzcoa, Spain
| | - José M. Asua
- Edificio
Joxe Mari Korta, POLYMAT, University of the Basque Country EHU-UPV, Avda. Tolosa 72, 20018 Donostia-San Sebastian, Guipúzcoa, Spain
| | - Carmen Mijangos
- Instituto
de Ciencia y Tecnología de Polímeros, Consejo Superior de Investigaciones Científicas (CSIC), Juan de la Cierva 3, Madrid 28006, Spain
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27
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Doan HN, Tsuchida H, Iwata T, Kinashi K, Sakai W, Tsutsumi N, Huynh DP. Fabrication and photochromic properties of Forcespinning® fibers based on spiropyran-doped poly(methyl methacrylate). RSC Adv 2017. [DOI: 10.1039/c7ra03794e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Photochromic PMMA micro/nanofibers were fabricated using a Forcespinning™ apparatus of our own design.
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Affiliation(s)
- Hoan Ngoc Doan
- Internship Student
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
- Faculty of Materials Technology
| | - Hayato Tsuchida
- Master's Program of Innovative Materials
- Graduate School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Takato Iwata
- School of Science and Technology
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Kenji Kinashi
- Faculty of Materials Science and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Wataru Sakai
- Faculty of Materials Science and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Naoto Tsutsumi
- Faculty of Materials Science and Engineering
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Dai Phu Huynh
- Faculty of Materials Technology
- University of Technology
- Vietnam National University
- HoChiMinh City
- Vietnam
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28
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Sun S, Yang Q, Liang S, Yang Z. Hollow CuxO (x = 2, 1) micro/nanostructures: synthesis, fundamental properties and applications. CrystEngComm 2017. [DOI: 10.1039/c7ce01530e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this review, we comprehensively summarize the important advances in hollow CuxO micro/nanostructures, including the universal synthesis strategies, the interfacial Cu–O atomic structures as well as the intrinsic properties, and potential applications. Remarks on emerging issues and promising research directions are also discussed.
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Affiliation(s)
- Shaodong Sun
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology
- School of Materials Science and Engineering
- Xi'an University of Technology
- Xi'an 710048
- People's Republic of China
| | - Qing Yang
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology
- School of Materials Science and Engineering
- Xi'an University of Technology
- Xi'an 710048
- People's Republic of China
| | - Shuhua Liang
- Shaanxi Province Key Laboratory for Electrical Materials and Infiltration Technology
- School of Materials Science and Engineering
- Xi'an University of Technology
- Xi'an 710048
- People's Republic of China
| | - Zhimao Yang
- School of Science
- State Key Laboratory for Mechanical Behavior of Materials
- MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter
- Center of Suzhou Nano Science and Technology
- Xi'an Jiaotong University
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29
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Tarnacka M, Chrobok A, Matuszek K, Golba S, Maksym P, Kaminski K, Paluch M. Polymerization of Monomeric Ionic Liquid Confined within Uniaxial Alumina Pores as a New Way of Obtaining Materials with Enhanced Conductivity. ACS APPLIED MATERIALS & INTERFACES 2016; 8:29779-29790. [PMID: 27709888 DOI: 10.1021/acsami.6b10666] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Broadband dielectric spectroscopy (BDS) and differential scanning calorimetry (DSC) have been employed to probe dynamics and charge transport of 1-butyl-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide ([bvim][NTf2]) confined in native uniaxial AAO pores as well as to study kinetics of radical polymerization of the examined compound as a function of the degree of confinement. Subsequently, the electronic conductivity of the produced polymers was investigated. As observed, polymerization carried out at T = 363 K proceeds faster under confinement with some saturation effect observed for the sample in pores of smaller diameter. Obtained results were discussed in the context of the very recent reports showing that the free volume of the confined material is higher with respect to the bulk one. It was also noted that conductivity of poly[bvim][NTf2] is significantly higher with respect to the macromolecules obtained upon bulk polymerization. Moreover, charge transport of the confined macromolecules is even higher when compared to the bulk monomeric ionic liquid at some thermodynamic conditions. Additionally, the molecular weight, Mw, of the confined-synthesized polymers is significantly higher with respect to the bulk-synthesized material. Interestingly, both parameters, (i) the enhancement of σdc and (ii) the increase in Mw, can be tuned and controlled by the application of the appropriate confinement. Consequently, those results are quite promising in the context of development of the fabrication of polymerized ionic liquids (PILs) nanomaterials with unique properties and morphologies, which can be further easily applied in the field of nanotechnology.
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Affiliation(s)
- Magdalena Tarnacka
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, University of Silesia , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Anna Chrobok
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology , Krzywoustego 4, 44-100 Gliwice, Poland
| | - Karolina Matuszek
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology , Krzywoustego 4, 44-100 Gliwice, Poland
| | - Sylwia Golba
- Institute of Materials Science, University of Silesia , 75 Pulk Piechoty 1A, 41-500 Chorzow, Poland
| | - Paulina Maksym
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology , Strzody 9, 44-100 Gliwice, Poland
| | - Kamil Kaminski
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, University of Silesia , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, University of Silesia , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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30
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Lin Y, Liu L, Zhang D, Liu Y, Guan A, Wu G. Unexpected segmental dynamics in polystyrene-grafted silica nanocomposites. SOFT MATTER 2016; 12:8542-8553. [PMID: 27722506 DOI: 10.1039/c6sm01321j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Establishing the relationship between interfacial layer chain packing and dynamics remains a continuing challenge in polymer nanocomposites (PNCs). This issue is expected to be significant in our understanding of the mechanism of the dynamic response of such materials and the manner in which these parameters affect the macroscopic properties of PNCs. In this study, we report the dynamics of free polystyrene (PS) and poly(methyl methacrylate) (PMMA) matrix chains, as well as those of polymer chains surrounding the spherical silica nanoparticles (NPs) where silica NPs are either bare or PS grafted, to discriminate the role of grafted chains and interfacial interactions between grafted NPs and the matrix. The α-relaxation dynamics of the PS matrix is unaffected by silica NP loadings, it slows down in PMMA nanocomposites because of polymer-NP interfacial interactions and steric hindrance. More interestingly, we probe the enhanced mobility of the interfacial layer (α'-relaxation) in PNCs filled with grafted NPs, and this phenomenon is further corroborated by the accelerated Maxwell-Wagner-Sillars polarization process in the presence of grafted silica NPs. Moreover, the α'-relaxation time in the vicinity of glass transition temperature of the polymer matrix unexpectedly increases with increasing temperature. Such an anomalous temperature-dependent behavior can be attributed to the influence exerted by slow α-relaxation dynamics. Considering these phenomena and the mechanical properties, we propose a three-layer model to explain the observed behavior of grafted silica NP-filled nanocomposites. These findings provide new insight into the mechanisms responsible for mechanical reinforcement and therefore provide guidance in designing PNCs with tunable macroscopic properties.
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Affiliation(s)
- Yu Lin
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Langping Liu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Dongge Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yuanbiao Liu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Aiguo Guan
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Guozhang Wu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
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31
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Tarnacka M, Kaminski K, Mapesa EU, Kaminska E, Paluch M. Studies on the Temperature and Time Induced Variation in the Segmental and Chain Dynamics in Poly(propylene glycol) Confined at the Nanoscale. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01237] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Magdalena Tarnacka
- Institute
of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian
Center for Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Kamil Kaminski
- Institute
of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
| | - Emmanuel U. Mapesa
- Institute
of Experimental Physics I, University of Leipzig, Linnéstraße
5, 04103 Leipzig, Germany
| | - Ewa Kaminska
- Department
of Pharmacognosy and Phytochemistry, Medical University of Silesia in Katowice, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Jagiellonska 4, 41-200 Sosnowiec, Poland
| | - Marian Paluch
- Institute
of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian
Center for Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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32
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Wang H, Chang T, Li X, Zhang W, Hu Z, Jonas AM. Scaled down glass transition temperature in confined polymer nanofibers. NANOSCALE 2016; 8:14950-14955. [PMID: 27476991 DOI: 10.1039/c6nr04459j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Arrays of polymer nanostructures have been widely used in many novel devices and nanofabrication methods. The glass transition temperature, which is a key parameter influencing the long-term stability of polymer nanostructures, has not yet been systematically studied and well understood. Here we study this technological and fundamental issue with polymers of different values of molar mass M confined in nanocylinders of a varying diameter D. The glass transition temperature Tg loses its dependence on the molar mass for D ≲ 100 nm, a range in which the relative depression of Tg varies as D(-0.44). For higher cylinder diameters, Tg progressively recovers its dependence on the molar mass. This is quantitatively reproduced by a model based on an equilibrium interfacial excess of free volume, which needs to be created unless provided by the chain ends. Our findings suggest that the structural perturbations during nanofabrication may strongly affect the long-term stability of arrays of polymer nanostructures.
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Affiliation(s)
- Hongxia Wang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China and College of Chemistry, Chemical Engineering and Materials, Soochow University, Suzhou 215123, China.
| | - Tongxin Chang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China and Center for Soft Condensed Matter Physics and Interdisciplinary Research & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Xiaohui Li
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China and Center for Soft Condensed Matter Physics and Interdisciplinary Research & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Weidong Zhang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China and Center for Soft Condensed Matter Physics and Interdisciplinary Research & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Zhijun Hu
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China and College of Chemistry, Chemical Engineering and Materials, Soochow University, Suzhou 215123, China. and Center for Soft Condensed Matter Physics and Interdisciplinary Research & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Alain M Jonas
- Bio & Soft Matter, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1/L7.04.02, B1348 Louvain-la-Neuve, Belgium.
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33
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Affiliation(s)
- Chia-Chun Lin
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Emmabeth Parrish
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Russell J. Composto
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
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34
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Muanchan P, Suzuki S, Kyotani T, Ito H. One-dimensional polymer nanofiber arrays with high aspect ratio obtained by thermal nanoimprint method. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24403] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Paritat Muanchan
- Research Center for GREEN Materials and Advanced Processing (GMAP), Graduate School of Science and Engineering; Yamagata University 4-3-16 Jonan; Yonezawa Yamagata 992-8510 Japan
| | - Shohei Suzuki
- Research Center for GREEN Materials and Advanced Processing (GMAP), Graduate School of Science and Engineering; Yamagata University 4-3-16 Jonan; Yonezawa Yamagata 992-8510 Japan
| | - Takashi Kyotani
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University 2-1-1, Katahira; Aoba-Ku Sendai 980-8577 Japan
| | - Hiroshi Ito
- Research Center for GREEN Materials and Advanced Processing (GMAP), Graduate School of Science and Engineering; Yamagata University 4-3-16 Jonan; Yonezawa Yamagata 992-8510 Japan
- Graduate School of Organic Materials Science; Yamagata University 4-3-16 Jonan; Yonezawa Yamagata 992-8510 Japan
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35
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Fang HJ, Chen Y, Wong CM, Qiu WB, Chan HLW, Dai JY, Li Q, Yan QF. Anodic aluminum oxide-epoxy composite acoustic matching layers for ultrasonic transducer application. ULTRASONICS 2016; 70:29-33. [PMID: 27125558 DOI: 10.1016/j.ultras.2016.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 03/31/2016] [Accepted: 04/03/2016] [Indexed: 06/05/2023]
Abstract
The goal of this work is to demonstrate the application of anodic aluminum oxide (AAO) template as matching layer of ultrasonic transducer. Quarter-wavelength acoustic matching layer is known as a vital component in medical ultrasonic transducers to compensate the acoustic impedance mismatch between piezoelectric element and human body. The AAO matching layer is made of anodic aluminum oxide template filled with epoxy resin, i.e. AAO-epoxy 1-3 composite. Using this composite as the first matching layer, a ∼12MHz ultrasonic transducer based on soft lead zirconate titanate piezoelectric ceramic is fabricated, and pulse-echo measurements show that the transducer exhibits very good performance with broad bandwidth of 68% (-6dB) and two-way insertion loss of -22.7dB. Wire phantom ultrasonic image is also used to evaluate the transducer's performance, and the results confirm the process feasibility and merit of AAO-epoxy composite as a new matching material for ultrasonic transducer application. This matching scheme provides a solution to address the problems existing in the conventional 0-3 composite matching layer and suggests another useful application of AAO template.
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Affiliation(s)
- H J Fang
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China; Department of Chemistry, Tsinghua University, Beijing, PR China
| | - Y Chen
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China; The Hong Kong Polytechnic University, Shenzhen Research Institute, PR China
| | - C M Wong
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China; Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
| | - W B Qiu
- Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - H L W Chan
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
| | - J Y Dai
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China; The Hong Kong Polytechnic University, Shenzhen Research Institute, PR China.
| | - Q Li
- Department of Chemistry, Tsinghua University, Beijing, PR China
| | - Q F Yan
- Department of Chemistry, Tsinghua University, Beijing, PR China
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36
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Mijangos C, Hernández R, Martín J. A review on the progress of polymer nanostructures with modulated morphologies and properties, using nanoporous AAO templates. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2015.10.003] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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37
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Sanz B, Palmero EM, P. del Real R, Vázquez M, Mijangos C. Arrays of Magnetic Ni Nanowires Grown Inside Polystyrene Nanotubes. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02860] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Belén Sanz
- Instituto de Ciencia
y Tecnología de Polímeros, ICTP, CSIC, 28006, Madrid, Spain
| | - Ester M. Palmero
- Instituto de Ciencia
de Materiales de Madrid, ICMM, CSIC, 28049, Madrid, Spain
| | - Rafael P. del Real
- Instituto de Ciencia
de Materiales de Madrid, ICMM, CSIC, 28049, Madrid, Spain
| | - Manuel Vázquez
- Instituto de Ciencia
de Materiales de Madrid, ICMM, CSIC, 28049, Madrid, Spain
| | - Carmen Mijangos
- Instituto de Ciencia
y Tecnología de Polímeros, ICTP, CSIC, 28006, Madrid, Spain
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38
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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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39
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Tsai CC, Chen JT. Effect of the polymer concentration on the Rayleigh-instability-type transformation in polymer thin films coated in the nanopores of anodic aluminum oxide templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:2569-2575. [PMID: 25654741 DOI: 10.1021/la504901h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We study the Rayleigh-instability-type transformation of polystyrene (PS) thin films coated in the nanopores of anodic aluminum oxide (AAO) templates. The PS thin films are fabricated using a solution-wetting method, in which the wall thicknesses are controlled by the concentrations of the polymer solutions and the diameters of the nanopores. By thermal annealing, the surfaces of the thin films undulate and the morphologies transform from nanotubes to Rayleigh-instability-induced nanostructures (short nanorods) and long nanorods. To understand the mechanism of the morphology transformation further, we construct the morphology diagrams by annealing the PS thin films at different temperatures and times. We observe that the morphology diagrams of the PS thin films prepared by different concentrations are similar, indicating that the transformation kinetics are not affected by the film thicknesses. The values of the undulation wavelengths, however, are controlled by the film thicknesses and the diameters of the nanopores.
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Affiliation(s)
- Chia-Chan Tsai
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 30010, Taiwan
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40
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Reid DK, Alves Freire M, Yao H, Sue HJ, Lutkenhaus JL. The Effect of Surface Chemistry on the Glass Transition of Polycarbonate Inside Cylindrical Nanopores. ACS Macro Lett 2015; 4:151-154. [PMID: 35596426 DOI: 10.1021/mz500725s] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The effect of surface chemistry on the glass transition of polycarbonate (PC) inside cylindrical nanopores is studied. Polycarbonate is melt-wetted into nanoporous anodic aluminum oxide (AAO) treated with hydrophobic alkyl- and fluorosilanes of varying length. The curvature observed at the nanowire tips is consistent with a contact angle descriptive of polycarbonate-AAO surface interactions. Differential scanning calorimetry (DSC) thermograms reveal a distinct broadening of the Tg that is related to the motion of polymer chains at the nanopore wall as well as at the core. DSC and thermal gravimetric analysis (TGA) show that polycarbonate infiltrated into a naked AAO template (without silane treatment) degrades upon heating, suggestive of a surface-catalyzed degradation mechanism. It is further shown that silane treatment largely prevents PC thermal degradation.
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Affiliation(s)
| | - Marcela Alves Freire
- Universidade Federal de Minas Gerais, Pampulha,
Belo Horizonte, MG 31270-901, Brazil
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41
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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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42
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43
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Carrillo JMY, Sumpter BG. Structure and dynamics of confined flexible and unentangled polymer melts in highly adsorbing cylindrical pores. J Chem Phys 2014; 141:074904. [DOI: 10.1063/1.4893055] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jan-Michael Y. Carrillo
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Bobby G. Sumpter
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA and Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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44
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Maiz J, Zhao W, Gu Y, Lawrence J, Arbe A, Alegría A, Emrick T, Colmenero J, Russell TP, Mijangos C. Dynamic study of polystyrene-block-poly(4-vinylpyridine) copolymer in bulk and confined in cylindrical nanopores. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.05.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Chen JT, Wei TH, Chang CW, Ko HW, Chu CW, Chi MH, Tsai CC. Fabrication of Polymer Nanopeapods in the Nanopores of Anodic Aluminum Oxide Templates Using a Double-Solution Wetting Method. Macromolecules 2014. [DOI: 10.1021/ma500568j] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jiun-Tai Chen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050
| | - Tzu-Hui Wei
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050
| | - Chun-Wei Chang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050
| | - Hao-Wen Ko
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050
| | - Chien-Wei Chu
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050
| | - Mu-Huan Chi
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050
| | - Chia-Chan Tsai
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 30050
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46
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Mortier C, Darmanin T, Guittard F. Major influence of the alkyl chain length of poly(2,4-dialkyl-3,4-propylenedioxythiophene) on the surface fibrous structures and hydrophobicity. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Claudio Mortier
- Univ. of Nice Sophia Antipolis, CNRS, UPMC, UMR 7336; Nice 06100 France
| | - Thierry Darmanin
- Univ. of Nice Sophia Antipolis, CNRS, UPMC, UMR 7336; Nice 06100 France
| | - Frederic Guittard
- Univ. of Nice Sophia Antipolis, CNRS, UPMC, UMR 7336; Nice 06100 France
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47
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Sun S, Yang Z. Cu2O-templated strategy for synthesis of definable hollow architectures. Chem Commun (Camb) 2014; 50:7403-15. [DOI: 10.1039/c4cc00304g] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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48
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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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