1
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Luo H, He X, Li W, Niu Y, Li G. Chain Dynamics and Crystallization Behavior of Poly(ethylene oxide) in Imidazolium-Based Ionic Liquids with Different Cationic Structures. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huan Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China
| | - Xi He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China
| | - Wenze Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China
| | - Yanhua Niu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China
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2
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Altorbaq AS, Krauskopf AA, Wen X, Pérez-Camargo RA, Su Y, Wang D, Müller AJ, Kumar SK. Crystallization Kinetics and Nanoparticle Ordering in Semicrystalline Polymer Nanocomposites. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101527] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Utpalla P, Sharma SK, Deshpande SK, Bahadur J, Sen D, Sahu M, Pujari PK. Role of free volumes and segmental dynamics on ion conductivity of PEO/LiTFSI solid polymer electrolytes filled with SiO 2 nanoparticles: a positron annihilation and broadband dielectric spectroscopy study. Phys Chem Chem Phys 2021; 23:8585-8597. [PMID: 33876020 DOI: 10.1039/d1cp00194a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The limited ionic conductivity of polymer electrolytes is a major issue for their industrial application. Enhancement of ionic conductivity in the poly(ethylene oxide), PEO, based electrolyte has been achieved by loading passive nanofillers such as SiO2 nanoparticles (NPs). To investigate the role of modifications in free volume characteristics and the polymer chain dynamics induced by the loading of passive fillers on the ionic conductivity of the PEO based ternary electrolyte, a systematic investigation has been carried out using positron annihilation and broadband dielectric spectroscopy. As a result of interfacial interactions, the loading of SiO2 NPs alters the semi-crystalline morphology of PEO resulting in a higher crystallinity at lower loadings due to the surface confinement of PEO chains, and the formation of smaller PEO crystallites at higher loadings due to interparticle nanoconfinement. These modifications are accompanied by a decrease in free volume fraction at the lowest loading (0.5 wt%) followed by an increase at higher loadings (≥2.0 wt%). The Almond-West formalism considering two different universalities in different temperature and frequency ranges has been used to explain the ion-conduction process at different NP loadings. The Li ion conductivity is observed to be maximum for a 5.0 wt% loading of SiO2 NPs. The enhancement in ionic conductivity is observed to be directly correlated with the free volume characteristics and segmental dynamics of the PEO matrix, confirming their role in ion transport in polymer electrolytes.
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Affiliation(s)
- P Utpalla
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
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4
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Altorbaq AS, Jimenez AM, Pribyl J, Benicewicz B, Müller AJ, Kumar SK. Polymer Spherulitic Growth Kinetics Mediated by Nanoparticle Assemblies. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02173] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Abdullah S. Altorbaq
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Andrew M. Jimenez
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Julia Pribyl
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Brian Benicewicz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Alejandro J. Müller
- POLYMAT and Faculty of Chemistry, Basque Country University, UPV/EHU, Paseo Lardizabal 3, Donostia-San Sebastián 20018, Spain
- Ikerbasque, Basque Science Foundation, Bilbao 48009, Spain
| | - Sanat K. Kumar
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
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5
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Jimenez AM, Altorbaq AS, Müller AJ, Kumar SK. Polymer Crystallization under Confinement by Well-Dispersed Nanoparticles. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01479] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Andrew M. Jimenez
- Department of Chemical Engineering, Columbia University, New York, New York, 10027, United States
| | - Abdullah S. Altorbaq
- Department of Chemical Engineering, Columbia University, New York, New York, 10027, United States
| | - Alejandro J. Müller
- POLYMAT and Faculty of Chemistry, Basque Country University UPV/EHU, Paseo Lardizabal 3, 20018 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Science Foundation, 48011 Bilbao, Spain
| | - Sanat K. Kumar
- Department of Chemical Engineering, Columbia University, New York, New York, 10027, United States
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6
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Wen X, Zhao W, Su Y, Wang D. Interfacial effects on crystallization behavior of polymer nanocomposites with polymer‐grafted nanoparticles. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xiangning Wen
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Weiwei Zhao
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Yunlan Su
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Dujin Wang
- Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry, Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
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7
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Zhao W, Su Y, Wen X, Wang D. Manipulating crystallization behavior of poly(ethylene oxide) by functionalized nanoparticle inclusion. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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9
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Agbolaghi S, Abbaspoor S, Abbasi F. A comprehensive review on polymer single crystals—From fundamental concepts to applications. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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10
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Effects of amorphous silica nanoparticles and polymer blend compositions on the structural, thermal and dielectric properties of PEO–PMMA blend based polymer nanocomposites. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1510-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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11
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12
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Zhao W, Su Y, Müller AJ, Gao X, Wang D. Direct Relationship Between Interfacial Microstructure and Confined Crystallization in Poly(Ethylene Oxide)/Silica Composites: The Study of Polymer Molecular Weight Effects. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24418] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Weiwei Zhao
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 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 Sebastia'n 20018 Spain
- IKERBASQUE, Basque Foundation for Science; Bilbao Spain
| | - Xia Gao
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
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13
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Bodratti AM, Sarkar B, Alexandridis P. Adsorption of poly(ethylene oxide)-containing amphiphilic polymers on solid-liquid interfaces: Fundamentals and applications. Adv Colloid Interface Sci 2017; 244:132-163. [PMID: 28069108 DOI: 10.1016/j.cis.2016.09.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 09/23/2016] [Accepted: 09/23/2016] [Indexed: 12/30/2022]
Abstract
The adsorption of amphiphilic molecules of varying size on solid-liquid interfaces modulates the properties of colloidal systems. Nonionic, poly(ethylene oxide) (PEO)-based amphiphilic molecules are particularly useful because of their graded hydrophobic-hydrophilic nature, which allows for adsorption on a wide array of solid surfaces. Their adsorption also results in other useful properties, such as responsiveness to external stimuli and solubilization of hydrophobic compounds. This review focuses on the adsorption properties of PEO-based amphiphiles, beginning with a discussion of fundamental concepts pertaining to the adsorption of macromolecules on solid-liquid interfaces, and more specifically the adsorption of PEO homopolymers. The main portion of the review highlights studies on factors affecting the adsorption and surface self-assembly of PEO-PPO-PEO block copolymers, where PPO is poly(propylene oxide). Block copolymers of this type are commercially available and of interest in several fields, due to their low toxicity and compatibility in aqueous systems. Examples of applications relevant to the interfacial behavior of PEO-PPO-PEO block copolymers are paints and coatings, detergents, filtration, and drug delivery. The methods discussed herein for manipulating the adsorption properties of PEO-PPO-PEO are emphasized for their ability to shed light on molecular interactions at interfaces. Knowledge of these interactions guides the formulation of novel materials with useful mesoscale organization and micro- and macrophase properties.
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14
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The role of hydrogen bonding in non-ionic polymer adsorption to cellulose nanocrystals and silica colloids. Curr Opin Colloid Interface Sci 2017. [DOI: 10.1016/j.cocis.2017.03.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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15
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Hetayothin B, Cabaniss RA, Blum FD. Does Plasticizer Penetrate Tightly Bound Polymer in Adsorbed Poly(vinyl acetate) on Silica? Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Boonta Hetayothin
- Department of Chemistry and Biochemistry, California State University, Los
Angeles, California 90032, United States
| | | | - Frank D. Blum
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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16
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Effect of particle/polymer number ratio on the structure and dynamics of complex between large polymer and nanoparticle. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Kalasin S, Santore MM. Near-Surface Motion and Dynamic Adhesion during Silica Microparticle Capture on a Polymer (Solvated PEG) Brush via Hydrogen Bonding. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01977] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Surachate Kalasin
- Department of Polymer Science
and Engineering, University of Massachusetts, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Maria M. Santore
- Department of Polymer Science
and Engineering, University of Massachusetts, 120 Governors Drive, Amherst, Massachusetts 01003, United States
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18
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Zhao W, Su Y, Gao X, Xu J, Wang D. Interfacial effect on confined crystallization of poly(ethylene oxide)/silica composites. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23915] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Weiwei Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Xia Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
| | - Jianjun Xu
- DSM Resolve; P.O. Box 18 6160 MD Gleen The Netherlands
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics; Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190 China
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19
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Dielectric dispersion and relaxation studies of melt compounded poly(ethylene oxide)/silicon dioxide nanocomposites. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1424-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Gao X, Xie B, Su Y, Fu D, Wang D. Nanoparticle Enlarged Interfacial Effect on Phase Transition of 1-Octadecanol/Silica Composites. J Phys Chem B 2015; 119:2074-80. [DOI: 10.1021/jp512124s] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Xia Gao
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Baoquan Xie
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Yunlan Su
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Dongsheng Fu
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
| | - Dujin Wang
- Beijing
National Laboratory
for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute
of Chemistry, Chinese Academy of Sciences, No. 2, North Street 1, Zhongguancun, Beijing 100190, China
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21
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Yang L, Huang S, Wu F, Zheng S, Yang W, Liu Z, Yang M. New insights into the elasticity and multi-level relaxation of filler network with studies on the rheology of isotactic polypropylene/carbon black nanocomposite. RSC Adv 2015. [DOI: 10.1039/c5ra10516a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The elasticity and multi-level relaxation behavior of filler network in isotactic polypropylene/carbon black nanocomposites were systematically studied, which was instructive for the development and application of viscoelastic materials.
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Affiliation(s)
- Luqiong Yang
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People’s Republic of China
| | - Shilin Huang
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People’s Republic of China
- Max Planck Institute for Polymer Research
| | - Feng Wu
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People’s Republic of China
| | - Shaodi Zheng
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People’s Republic of China
| | - Wei Yang
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People’s Republic of China
- State Key Laboratory of Polymer Materials Engineering
| | - Zhengying Liu
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People’s Republic of China
| | - Mingbo Yang
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- People’s Republic of China
- State Key Laboratory of Polymer Materials Engineering
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22
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Barroso-Bujans F, Palomino P, Fernandez-Alonso F, Rudić S, Alegría A, Colmenero J, Enciso E. Intercalation and Confinement of Poly(ethylene oxide) in Porous Carbon Nanoparticles with Controlled Morphologies. Macromolecules 2014. [DOI: 10.1021/ma501607e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Fabienne Barroso-Bujans
- Centro de Física
de Materiales (CSIC-UPV/EHU)-Materials Physics Center, Paseo Manuel Lardizábal 5, 20018 San Sebastián, Spain
- Donostia International Physics Center, Paseo Manuel Lardizábal 4, 20018 San Sebastián, Spain
| | - Pablo Palomino
- Departamento de Química Física
I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Felix Fernandez-Alonso
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom
- Department of Physics and Astronomy, University College London, Gower
Street, London WC1E 6BT, United Kingdom
| | - Svemir Rudić
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Angel Alegría
- Centro de Física
de Materiales (CSIC-UPV/EHU)-Materials Physics Center, Paseo Manuel Lardizábal 5, 20018 San Sebastián, Spain
- Departamento de Física de Materiales, Universidad del País Vasco (UPV/EHU) Apartado 1072, 20080 San Sebastián, Spain
| | - Juan Colmenero
- Centro de Física
de Materiales (CSIC-UPV/EHU)-Materials Physics Center, Paseo Manuel Lardizábal 5, 20018 San Sebastián, Spain
- Donostia International Physics Center, Paseo Manuel Lardizábal 4, 20018 San Sebastián, Spain
- Departamento de Física de Materiales, Universidad del País Vasco (UPV/EHU) Apartado 1072, 20080 San Sebastián, Spain
| | - Eduardo Enciso
- Departamento de Química Física
I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
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23
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Zhu K, Liu Y, Liu J. A fast charging/discharging all-solid-state lithium ion battery based on PEO-MIL-53(Al)-LiTFSI thin film electrolyte. RSC Adv 2014. [DOI: 10.1039/c4ra06208f] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metal–organic framework aluminum 1,4-benzenedicarboxylate (MIL-53(Al)) is used as a filler for a polyethylene oxide (PEO) based thin film electrolyte.
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Affiliation(s)
- Kai Zhu
- School of Metallurgy and Environment
- Central South University
- Changsha, China
| | - Yexiang Liu
- School of Metallurgy and Environment
- Central South University
- Changsha, China
| | - Jin Liu
- School of Metallurgy and Environment
- Central South University
- Changsha, China
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24
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Fernandes NJ, Akbarzadeh J, Peterlik H, Giannelis EP. Synthesis and properties of highly dispersed ionic silica-poly(ethylene oxide) nanohybrids. ACS NANO 2013; 7:1265-71. [PMID: 23351113 PMCID: PMC3589098 DOI: 10.1021/nn304735r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 01/25/2013] [Indexed: 05/20/2023]
Abstract
We report an ionic hybrid based on silica nanoparticles as the anion and amine-terminated poly(ethylene oxide) (PEO) as a cation. The charge on the nanoparticle anion is carried by the surface hydroxyls. SAXS and TEM reveal an exceptional degree of dispersion of the silica in the polymer and high degree of order in both thin film and bulk forms. In addition to better dispersion, the ionic hybrid shows improved flow characteristics compared to silica/PEO mixtures in which the ionic interactions are absent.
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Affiliation(s)
- Nikhil J. Fernandes
- School of Applied and Engineering Physics and Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Johanna Akbarzadeh
- Faculty of Physics, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
| | - Herwig Peterlik
- Faculty of Physics, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
| | - Emmanuel P. Giannelis
- School of Applied and Engineering Physics and Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
- Address correspondence to
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25
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Park S, Zhong M, Lee T, Paik HJ, Matyjaszewski K. Modification of the surfaces of silicon wafers with temperature-responsive cross-linkable poly[oligo(ethylene oxide) methacrylate]-based star polymers. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5949-5955. [PMID: 23067139 DOI: 10.1021/am301597b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Temperature-responsive photo-cross-linkable poly[oligo(ethylene oxide) monomethyl ether methacrylate] (POEOMA)-based star polymers were synthesized by atom transfer radical polymerization (ATRP), for the modification of silicon (Si) wafer surfaces. The polymers showed a lower critical solution temperature (LCST) behavior in aqueous media. The polymers were modified with benzophenone (Bzp) functional groups that were utilized in UV-triggered (λ = 365 nm) cross-linking reactions for the preparation of polymer networks. The star polymers were deposited onto the surfaces of Si wafers by spin coating, and stable polymer films were formed by simple UV irradiation. The stability of thermoresponsive cross-linked polymer films deposited on the Si wafer was confirmed by changing their hydrophilicity by changing the temperature of the environment. In addition, the POEOMA-based star polymers could be utilized for the preparation of photolithography-patterned surfaces. The successful formation of uniform stable polymeric films indicates that Bzp-functionalized POEOMA star polymers can be used for a simple Si surface modification.
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Affiliation(s)
- Sangwoo Park
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA
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26
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Capuano G, Filippone G, Romeo G, Acierno D. Universal features of the melt elasticity of interacting polymer nanocomposites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5458-5463. [PMID: 22364420 DOI: 10.1021/la205105m] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We study the structure and linear viscoelasticity of interacting polymer nanocomposites based on mixtures of poly(ethylene oxide) and fumed silica particles. The filler is dispersed within the polymer using two different techniques which lead to different dispersion states. The analysis of the dynamic response of our systems highlights the formation of a stress-bearing network above a critical volume fraction, Φ(c). Extending a two-phase model used to describe weakly interacting systems, we show that above Φ(c) the melt-state elasticity of the composites arises from the independent contributions of a polymer-particle network and a viscous matrix. We also find that, although Φ(c) depends on the initial state of dispersion, the network elasticity scales with volume fraction following a universal power-law, with an exponent ν ≈ 1.8. Such a scaling law has been recently predicted for the stress-bearing mechanism governed by polymer-mediated interactions.
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Affiliation(s)
- G Capuano
- Department of Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
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