1
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Yamamoto Y, Yamagata Y, Sato T, Nakamura K, Sato R, Naito M, Chung UI, Katashima T. Elucidating Nonlinear Stress Relaxation in Transient Networks through Two-Dimensional Rheo-Optics. ACS Macro Lett 2024:1171-1178. [PMID: 39166800 DOI: 10.1021/acsmacrolett.4c00338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
This study aims to elucidate the origin of nonlinear stress relaxation behaviors in transient networks using a systematically controlled model system consisting of the tetra-armed polyethylene glycols (Tetra-PEG slime) in conjunction with two-dimensional rheo-optics observations. Transient networks, characterized by their temporary cross-links, are extensively utilized in self-healing and robust materials. However, the molecular mechanisms governing their viscoelastic responses to large deformations have remained elusive. This is primarily due to the heterogeneous structures inherent in conventional transient networks and a scarcity of detailed experimental evaluations. By employing Tetra-PEG slime, which is distinguished by its regular structure with uniform strand lengths and functionalities, and the polarization imaging method, we overcome these obstacles. Our results reveal that the damping phenomena observed under large step strains arise from spatially heterogeneous relaxation, predominantly driven by network strand pullout. These insights lay a solid foundation for understanding the intricate rheological properties of transient networks.
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Affiliation(s)
- Yuta Yamamoto
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoshifumi Yamagata
- Anton Paar Japan K. K, Riverside Sumida first Fl, 1-19-9, Tsutsumi-dori, Sumida-ku, Tokyo 131-0034, Japan
| | - Taisuke Sato
- Photonic Lattice Inc., Labo City Sendai, 6-6-3 minami-Yoshinari, Aoba-ku, Sendai-city, Miyagi 989-3204, Japan
| | - Koshiro Nakamura
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ren Sato
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Mitsuru Naito
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ung-Il Chung
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takuya Katashima
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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2
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Zhou HX, Kota D, Qin S, Prasad R. Fundamental Aspects of Phase-Separated Biomolecular Condensates. Chem Rev 2024; 124:8550-8595. [PMID: 38885177 PMCID: PMC11260227 DOI: 10.1021/acs.chemrev.4c00138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Biomolecular condensates, formed through phase separation, are upending our understanding in much of molecular, cell, and developmental biology. There is an urgent need to elucidate the physicochemical foundations of the behaviors and properties of biomolecular condensates. Here we aim to fill this need by writing a comprehensive, critical, and accessible review on the fundamental aspects of phase-separated biomolecular condensates. We introduce the relevant theoretical background, present the theoretical basis for the computation and experimental measurement of condensate properties, and give mechanistic interpretations of condensate behaviors and properties in terms of interactions at the molecular and residue levels.
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Affiliation(s)
- Huan-Xiang Zhou
- Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, USA
- Department of Physics, University of Illinois Chicago, Chicago, Illinois 60607, USA
| | - Divya Kota
- Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, USA
| | - Sanbo Qin
- Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, USA
| | - Ramesh Prasad
- Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, USA
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3
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Shah NJ, Fang C, Osti NC, Mamontov E, Yu X, Lee J, Watanabe H, Wang R, Balsara NP. Nanosecond solvation dynamics in a polymer electrolyte for lithium batteries. NATURE MATERIALS 2024; 23:664-669. [PMID: 38413811 DOI: 10.1038/s41563-024-01834-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/06/2024] [Indexed: 02/29/2024]
Abstract
Solvation dynamics critically affect charge transport. Spectroscopic experiments and computer simulations show that these dynamics in aqueous systems occur on a picosecond timescale. In the case of organic electrolytes, however, conflicting values ranging from 1 to several 100 picoseconds have been reported. We resolve this conflict by studying mixtures of an organic polymer and a lithium salt. Lithium ions coordinate with multiple polymer chains, resulting in temporary crosslinks. Relaxation of these crosslinks, detected by quasielastic neutron scattering, are directly related to solvation dynamics. Simulations reveal a broad spectrum of relaxation times. The average timescale for solvation dynamics in both experiment and simulation is one nanosecond. We present the direct measurement of ultraslow dynamics of solvation shell break-up in an electrolyte.
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Affiliation(s)
- Neel J Shah
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Chao Fang
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Naresh C Osti
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Eugene Mamontov
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Xiaopeng Yu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Jaeyong Lee
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | | | - Rui Wang
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA.
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
| | - Nitash P Balsara
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, USA.
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
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4
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Michida S, Chung UI, Katashima T. Probing the Molecular Mechanism of Viscoelastic Relaxation in Transient Networks. Gels 2023; 9:945. [PMID: 38131931 PMCID: PMC10743357 DOI: 10.3390/gels9120945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/24/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023] Open
Abstract
Hydrogels, which have polymer networks through supramolecular and reversible interactions, exhibit various mechanical responsibilities to its surroundings. The influence of the reversible bonds on a hydrogel's macroscopic properties, such as viscoelasticity and dynamics, is not fully understood, preventing further innovative material development. To understand the relationships between the mechanical properties and molecular structures, it is required to clarify the molecular understanding of the networks solely crosslinked by reversible interactions, termed "transient networks". This review introduces our recent progress on the studies on the molecular mechanism of viscoelasticity in transient networks using multiple methods and model materials. Based on the combination of the viscoelasticity and diffusion measurements, the viscoelastic relaxation of transient networks does not undergo the diffusion of polymers, which is not explained by the framework of conventional molecular models for the viscoelasticity of polymers. Then, we show the results of the comparison between the viscoelastic relaxation and binding dynamics of reversible bonds. Viscoelastic relaxation is primarily affected by "dissociation dynamics of the bonds" and "network structures". These results are explained in the framework that the backbone, which is composed of essential chains supporting the stress, is broken by multiple dissociation events. This understanding of molecular dynamics in viscoelasticity will provide the foundation for designing transient networks.
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Affiliation(s)
- Shota Michida
- Department of Material Engineering, Faculty of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;
| | - Ung-il Chung
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takuya Katashima
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;
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5
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Cui X, Jiang N, Shao J, Zhang H, Yang Y, Tang P. Linear and Nonlinear Viscoelasticities of Dissociative and Associative Covalent Adaptable Networks: Discrepancies and Limits. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xiang Cui
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai200433, China
| | - Nuofei Jiang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai200433, China
| | - Jingyu Shao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai200433, China
| | - Hongdong Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai200433, China
| | - Yuliang Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai200433, China
| | - Ping Tang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai200433, China
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6
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Jasso M, Polacco G, Zanzotto L. Shear Viscosity Overshoots in Polymer Modified Asphalts. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15217551. [PMID: 36363143 PMCID: PMC9655602 DOI: 10.3390/ma15217551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 05/27/2023]
Abstract
Polymer modification is one of the most common methods for improving the performance of asphalt binders. Despite in-depth research, the structural modifications induced by polymers are still not well understood. In this work, steady shear viscosity measurements and cryo-scanning electron microscopy (cryo-SEM) were used to better understand the internal structure of asphalts modified by styrene-butadiene-styrene with and without sulfur as a crosslinking agent, asphalts modified by polyphosphoric acid (PPA), and quaternary asphalt blends modified by SBS, sulfur, and PPA. The results showed that polymer and asphaltenes collaborate, thus SBS forms a three-dimensional network strengthened by asphaltenes clusters. The strength, extension, and physical nature of such a network is revealed by the appearance of overshoots in the viscosity curves. Moreover, the indirect information deduced from the magnitude and shape of the shear viscosity curves successfully correlated with direct observations of the internal structure by cryo-SEM. Steady shear viscosity is thus recommended as a useful tool in studying the structural development of asphalts modified by different technologies.
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Affiliation(s)
- Martin Jasso
- Chairholder, Bituminous Materials Chair, Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Giovanni Polacco
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy
| | - Ludovit Zanzotto
- Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
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7
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Gu C, Du Z, Ouyang X, Xiang H, Zhu M, Luo J, LIU G. Pinching Dynamics of Telechelic Associating and Coupling Polymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Changpeng Gu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhukang Du
- Dongguan Computer Center, Dongguan 523000, China
| | - Xikai Ouyang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Hengxue Xiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Meifang Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jintian Luo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - GengXin LIU
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
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8
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Quienne B, Pinaud J, Caillol S. Synthesis of hydrophobically modified ethoxylated non-isocyanate urethanes (HENIURs) and their use as rheology additives. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Larson RG, Van Dyk AK, Chatterjee T, Ginzburg VV. Associative Thickeners for Waterborne Paints: Structure, Characterization, Rheology, and Modeling. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Kamkar M, Janmaleki M, Erfanian E, Sanati‐Nezhad A, Sundararaj U. Covalently cross‐linked hydrogels: Mechanisms of nonlinear viscoelasticity. CAN J CHEM ENG 2022. [DOI: 10.1002/cjce.24388] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Milad Kamkar
- Department of Chemical and Petroleum Engineering University of Calgary 2500 University Dr NW, Calgary Alberta Canada
| | - Mohsen Janmaleki
- BioMEMS and Bioinspired Microfluidic Laboratory Biomedical Engineering Graduate Program, University of Calgary Calgary, Alberta T2N1N4 Canada
| | - Elnaz Erfanian
- Department of Chemical and Petroleum Engineering University of Calgary 2500 University Dr NW, Calgary Alberta Canada
| | - Amir Sanati‐Nezhad
- BioMEMS and Bioinspired Microfluidic Laboratory, Department of Mechanical and Manufacturing Engineering University of Calgary Calgary, Alberta T2N1N4 Canada
| | - Uttandaraman Sundararaj
- Department of Chemical and Petroleum Engineering University of Calgary 2500 University Dr NW, Calgary Alberta Canada
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11
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Du Z, Guan T, Luo J, Sun N, Ren B. Light-Induced In Situ Chain Extension and Critical Gelation of Benzophenone End-Functionalized Telechelic Associative Polymers in Aqueous Solution. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01352] [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)
- Zhukang Du
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Tao Guan
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jintian Luo
- Center for Advanced Low Dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Ning Sun
- Department of Material Technology, Jiangmen Polytechnic, Jiangmen 529090, China
| | - Biye Ren
- School of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
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12
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Liu S, Zhang Z, Chen Q, Matsumiya Y, Watanabe H. Nonlinear Rheology of Telechelic Ionomers Based on Sodium Sulfonate and Carboxylate. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shuang Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, P. R. China
- University of Science and Technology of China, 230026 Hefei, P. R. China
| | - Zhijie Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, P. R. China
| | - Quan Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, P. R. China
- University of Science and Technology of China, 230026 Hefei, P. R. China
| | - Yumi Matsumiya
- Institute for Chemical Research, Kyoto University, 611-0011 Uji, Japan
| | - Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, 611-0011 Uji, Japan
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13
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Chen X, Du Z, Hu Y, Sun N, Ren B. Aggregation and Rheology of a Triblock Supra-amphiphilic Polymer Prepared by Ionic Self-Assembly of a Double-Hydrophilic Polyelectrolyte with an Oppositely Charged Surfactant in Aqueous Solution. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xi Chen
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhukang Du
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yan Hu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ning Sun
- Department of Material Technology, Jiangmen Polytechnic, Jiangmen 529090, China
| | - Biye Ren
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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14
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Danielsen SPO, Beech HK, Wang S, El-Zaatari BM, Wang X, Sapir L, Ouchi T, Wang Z, Johnson PN, Hu Y, Lundberg DJ, Stoychev G, Craig SL, Johnson JA, Kalow JA, Olsen BD, Rubinstein M. Molecular Characterization of Polymer Networks. Chem Rev 2021; 121:5042-5092. [PMID: 33792299 DOI: 10.1021/acs.chemrev.0c01304] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Polymer networks are complex systems consisting of molecular components. Whereas the properties of the individual components are typically well understood by most chemists, translating that chemical insight into polymer networks themselves is limited by the statistical and poorly defined nature of network structures. As a result, it is challenging, if not currently impossible, to extrapolate from the molecular behavior of components to the full range of performance and properties of the entire polymer network. Polymer networks therefore present an unrealized, important, and interdisciplinary opportunity to exert molecular-level, chemical control on material macroscopic properties. A barrier to sophisticated molecular approaches to polymer networks is that the techniques for characterizing the molecular structure of networks are often unfamiliar to many scientists. Here, we present a critical overview of the current characterization techniques available to understand the relation between the molecular properties and the resulting performance and behavior of polymer networks, in the absence of added fillers. We highlight the methods available to characterize the chemistry and molecular-level properties of individual polymer strands and junctions, the gelation process by which strands form networks, the structure of the resulting network, and the dynamics and mechanics of the final material. The purpose is not to serve as a detailed manual for conducting these measurements but rather to unify the underlying principles, point out remaining challenges, and provide a concise overview by which chemists can plan characterization strategies that suit their research objectives. Because polymer networks cannot often be sufficiently characterized with a single method, strategic combinations of multiple techniques are typically required for their molecular characterization.
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Affiliation(s)
- Scott P O Danielsen
- Marsico Lung Institute, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Haley K Beech
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Shu Wang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Bassil M El-Zaatari
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Xiaodi Wang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | | | | | - Zi Wang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Patricia N Johnson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Yixin Hu
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - David J Lundberg
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Georgi Stoychev
- Marsico Lung Institute, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Stephen L Craig
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Julia A Kalow
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Bradley D Olsen
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Michael Rubinstein
- Marsico Lung Institute, University of North Carolina, Chapel Hill, North Carolina 27599, United States.,Department of Chemistry, Duke University, Durham, North Carolina 27708, United States.,Departments of Biomedical Engineering and Physics, Duke University, Durham, North Carolina 27708, United States.,World Primer Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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15
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Yang Y, Kamon Y, Lynd NA, Hashidzume A. Self-Healing Thermoplastic Elastomers Formed from Triblock Copolymers with Dense 1,2,3-Triazole Blocks. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02080] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yanqiong Yang
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Yuri Kamon
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Nathaniel A. Lynd
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Akihito Hashidzume
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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16
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Yepremyan A, Osamudiamen A, Brook MA, Feinle A. Dynamically tuning transient silicone polymer networks with hydrogen bonding. Chem Commun (Camb) 2020; 56:13555-13558. [PMID: 33048066 DOI: 10.1039/d0cc05478j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Supramolecular polymers are composed of non-covalently connected chains and characterized by high chain dynamics. The viscoelastic behavior of supramolecular telechelic sugar-siloxanes - ranging from solids to viscous fluids able to form transient polymer networks - is readily tuned by the fraction of internal HO groups that can intermolecularly form hydrogen bonds.
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Affiliation(s)
- Akop Yepremyan
- McMaster University, Department of Chemistry and Chemical Biology, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
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17
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Guan T, Du Z, Peng J, Zhao D, Sun N, Ren B. Polymerizable Hydrophobically Modified Ethoxylated Urethane Acrylate Polymer: Synthesis and Viscoelastic Behavior in Aqueous Systems. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00982] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Guan
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhukang Du
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510641, China
| | - Jun Peng
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Dongli Zhao
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ning Sun
- Department of Material Technology, Jiangmen Polytechnic, Jiangmen 529090, China
| | - Biye Ren
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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18
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Quienne B, Pinaud J, Robin JJ, Caillol S. From Architectures to Cutting-Edge Properties, the Blooming World of Hydrophobically Modified Ethoxylated Urethanes (HEURs). Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01353] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Julien Pinaud
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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19
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Liu S, Wu S, Chen Q. Using Coupling Motion of Connecting Ions in Designing Telechelic Ionomers. ACS Macro Lett 2020; 9:917-923. [PMID: 35648601 DOI: 10.1021/acsmacrolett.0c00256] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Conventional telechelic ionomers have one ion fixed at each end, enabling the chains to form a physical network. Here we report a type of telechelic ionomers with a distribution of the number of ions at the chain ends, which endows them with very rich rheological properties. We synthesized the ionomer samples via a two-step polymerization. Namely, we synthesized a precursor chain first and then polymerized a few ion-containing monomers at its two ends. An average number of ion-containing monomers per chain end, m, varies from 0 to 3.0. Linear viscoelasticity of these samples can be well explained through considering the Poisson distribution of m, and the hierarchical relaxation of the chains ends according to the number of connecting ions that exhibit the coupling motion.
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Affiliation(s)
- Shuang Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, People's Republic of China.,University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Shilong Wu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, People's Republic of China
| | - Quan Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, People's Republic of China.,University of Science and Technology of China, Hefei 230026, People's Republic of China
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20
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Zhang R, Zhang C, Yang Z, Wu Q, Sun P, Wang X. Hierarchical Dynamics in a Transient Polymer Network Cross-Linked by Orthogonal Dynamic Bonds. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00407] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Rongchun Zhang
- South China Advanced Institute for Soft Matter Science and Technology (AISMST), School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Chi Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zhijun Yang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Qiang Wu
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Pingchuan Sun
- Key Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, 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, Nanjing University, Nanjing 210093, China
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21
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Andersson Trojer M, Andersson M, Bergenholtz J, Gatenholm P. Elastic strain-hardening and shear-thickening exhibited by thermoreversible physical hydrogels based on poly(alkylene oxide)-grafted hyaluronic acid or carboxymethylcellulose. Phys Chem Chem Phys 2020; 22:14579-14590. [PMID: 32597442 DOI: 10.1039/d0cp02124e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The formation of strongly elastic physical gels based on poly(alkylene oxide)-grafted hyaluronan or carboxymethylcellulose, exhibiting both shear-thickening and strain-hardening have been studied using rheometry and explained using a slightly different interpretation of the transient network theory. The graft copolymers were prepared by a quantitative coupling reaction. Their aqueous solutions displayed a thermoreversible continuous transition from Newtonian fluid to viscoelastic solid which could be controlled by the reaction conditions. The evolution of all material properties of the gel could be categorized into two distinct temperature regimes with a fast evolution at low temperatures followed by a slow evolution at high temperatures. The activation energy of the zero shear viscosity and the relaxation time of the graft inside the interconnecting microdomains were almost identical to each other in both temperature regimes. This suggests that the number of microdomains remained approximately constant whereas the aggregation number inside the microdomains increased according to the binodal curve of the thermosensitive graft.
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Affiliation(s)
- Markus Andersson Trojer
- Department of Colloid Chemistry, Interactions in Complex Monolayers, Max Planck Institute of Colloids and Interfaces, DE-14476 Potsdam, Germany and Department of Chemistry, Biomaterials and Textiles, Fibre Development, RISE IVF, Mölndal, Sweden.
| | - Mats Andersson
- Department of Chemistry and Chemical Engineering, Polymer Technology, Chalmers University of Technology, SE-41296 Göteborg, Sweden and Institute for NanoScale Science & Technology, Flinders University, Bedford Park, Adelaide, South Australia 5042, Australia
| | - Johan Bergenholtz
- Department of Chemistry and Molecular Biology, University of Gothenburg, SE-412 96 Göteborg, Sweden
| | - Paul Gatenholm
- Department of Chemistry and Chemical Engineering, Biopolymer Technology, Wallenberg Wood Science Center, Chalmers University of Technology, SE-41296 Göteborg, Sweden
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22
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Faiczak K, Brook MA, Feinle A. Energy-Dissipating Polymeric Silicone Surfactants. Macromol Rapid Commun 2020; 41:e2000161. [PMID: 32346942 DOI: 10.1002/marc.202000161] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 11/06/2022]
Abstract
Materials that are able to withstand impact loadings by dissipating energy are crucial for a broad range of different applications, including personal protective applications. Shear-thickening fluids (STFs) are often used for this purpose, but their preparation is still limited, in part, to high production costs. It is demonstrated that polymeric surfactants comprised of linear telechelic sugar-modified silicones-with neither additives nor particles-generate transient polymer networks (TPNs) that represent a promising alternative to STFs. The reported polymers have distinct viscoelastic properties and can turn from a liquid into a rubbery network when force is applied. Saccharide-modified silicones with short chains (degree of polymerization (DP) ≈ 34, 68) are solids, but become energy-absorbing viscoelastic fluids when diluted in low-viscosity silicone oils; longer silicones (DP ≈ 338, 675) with low saccharide contents are viscoelastic fluids at room temperature. Excellent damping properties are found for the reported silicone surfactants, even those containing only 0.1% saccharides. The degree of energy absorption can be tailored simply by controlling the sugar/silicone ratio.
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Affiliation(s)
- Kyle Faiczak
- McMaster University, Department of Chemistry and Chemical Biology, 1280 Main Street West, Hamilton, ON, L8S 4M1, Canada
| | - Michael A Brook
- McMaster University, Department of Chemistry and Chemical Biology, 1280 Main Street West, Hamilton, ON, L8S 4M1, Canada
| | - Andrea Feinle
- McMaster University, Department of Chemistry and Chemical Biology, 1280 Main Street West, Hamilton, ON, L8S 4M1, Canada.,Paris-Lodron University Salzburg, Department of Chemistry and Physics of Materials, Jakob-Haringer Str. 2A, Salzburg, Austria, 5020
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23
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Jiang N, Zhang H, Tang P, Yang Y. Linear Viscoelasticity of Associative Polymers: Sticky Rouse Model and the Role of Bridges. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00312] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Nuofei Jiang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Hongdong Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Ping Tang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yuliang Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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24
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Liu M, Gou S, Wu Q, Yang X, He Y, Zhou L, Tang L, Liu L, Duan M. Ionic liquids as an effective additive for improving the solubility and rheological properties of hydrophobic associating polymers. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111833] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Hendricks J, Louhichi A, Metri V, Fournier R, Reddy N, Bouteiller L, Cloitre M, Clasen C, Vlassopoulos D, Briels WJ. Nonmonotonic Stress Relaxation after Cessation of Steady Shear Flow in Supramolecular Assemblies. PHYSICAL REVIEW LETTERS 2019; 123:218003. [PMID: 31809142 DOI: 10.1103/physrevlett.123.218003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/27/2019] [Indexed: 06/10/2023]
Abstract
Stress relaxation upon cessation of shear flow is known to be described by single-mode or multimode monotonic exponential decays. This is considered to be ubiquitous in nature. However, we found that, in some cases, the relaxation becomes anomalous in that an increase in the relaxing stress is observed. Those observations were made for physicochemically very different systems, having in common, however, the presence of self-associating units generating structures at large length scales. The nonmonotonic stress relaxation can be described phenomenologically by a generic model based on a redistribution of energy after the flow has stopped. When broken bonds are reestablished after flow cessation, the released energy is partly used to locally increase the elastic energy by the formation of deformed domains. If shear has induced order such that these elastic domains are partly aligned, the reestablishing of bonds gives rise to an increase of the overall stress.
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Affiliation(s)
- Jan Hendricks
- Department of Chemical Engineering, KU Leuven, 3001 Leuven, Belgium
| | - Ameur Louhichi
- Institute of Electronic Structure and Laser, FORTH, P.O. Box 1527, 70013 Heraklion, Crete Greece
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 70013 Heraklion, Crete Greece
| | - Vishal Metri
- Computational Chemical Physics, Faculty of Science and Technology, and MESA+Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, Netherlands
| | - Rémi Fournier
- Molecular, Macromolecular Chemistry, and Materials, ESPCI Paris, CNRS, PSL University, 75005 Paris, France
| | - Naveen Reddy
- Faculty of Industrial Engineering, Hasselt University, Martelarenlaan 42, 3500 Hasselt, Belgium, and IMO-IMOMEC, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Laurent Bouteiller
- Sorbonne Université, CNRS, IPCM, Equipe Chimie des Polymères, 75005 Paris, France
| | - Michel Cloitre
- Molecular, Macromolecular Chemistry, and Materials, ESPCI Paris, CNRS, PSL University, 75005 Paris, France
| | - Christian Clasen
- Department of Chemical Engineering, KU Leuven, 3001 Leuven, Belgium
| | - Dimitris Vlassopoulos
- Institute of Electronic Structure and Laser, FORTH, P.O. Box 1527, 70013 Heraklion, Crete Greece
- Department of Materials Science and Technology, University of Crete, Voutes Campus, 70013 Heraklion, Crete Greece
| | - W J Briels
- Computational Chemical Physics, Faculty of Science and Technology, and MESA+Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, Netherlands
- ICS 3, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
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26
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Molecular Weight Dependence of Associative Behavior in Polyimide/DMF Solutions. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-020-2358-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Ibrahim MS, King S, Murray M, Szczygiel A, Alexander BD, Griffiths PC. Surfactant modulated interactions of hydrophobically modified ethoxylated urethane (HEUR) polymers with penetrable surfaces. J Colloid Interface Sci 2019; 552:9-16. [DOI: 10.1016/j.jcis.2019.05.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 11/15/2022]
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28
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Huang J, Morin FJ, Laaser JE. Charge-Density-Dominated Phase Behavior and Viscoelasticity of Polyelectrolyte Complex Coacervates. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00036] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jun Huang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Frances J. Morin
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jennifer E. Laaser
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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29
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García‐Peñas A, Biswas CS, Liang W, Wang Y, Stadler FJ. Lower Critical Solution Temperature in Poly(
N
‐Isopropylacrylamide): Comparison of Detection Methods and Molar Mass Distribution Influence. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alberto García‐Peñas
- College of Materials Science and EngineeringShenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsNanshan District Key Laboratory for Biopolymers and Safety EvaluationShenzhen University Shenzhen 518055 P. R. China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Optoelectronic EngineeringShenzhen University Shenzhen 518060 P. R. China
| | - Chandra Sekhar Biswas
- College of Materials Science and EngineeringShenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsNanshan District Key Laboratory for Biopolymers and Safety EvaluationShenzhen University Shenzhen 518055 P. R. China
| | - Weijun Liang
- College of Materials Science and EngineeringShenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsNanshan District Key Laboratory for Biopolymers and Safety EvaluationShenzhen University Shenzhen 518055 P. R. China
| | - Yu Wang
- College of Materials Science and EngineeringShenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsNanshan District Key Laboratory for Biopolymers and Safety EvaluationShenzhen University Shenzhen 518055 P. R. China
| | - Florian J. Stadler
- College of Materials Science and EngineeringShenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsNanshan District Key Laboratory for Biopolymers and Safety EvaluationShenzhen University Shenzhen 518055 P. R. China
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30
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Gârlea IC, Jaramillo-Cano D, Likos CN. Self-organization of gel networks formed by block copolymer stars. SOFT MATTER 2019; 15:3527-3540. [PMID: 30944917 DOI: 10.1039/c9sm00111e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The equilibrium properties of block copolymer star networks (BCS) are studied via computer simulations. We employ both molecular dynamics and multiparticle collisional dynamics simulations to investigate the self-organization of BCS with f = 9 functionalized arms close to their overlap concentrations under conditions of different fractions of functionalization and varying attraction strength. We find three distinct macroscopic self-organized states depending on fraction of attractive end-monomers and the strength of the attraction. At weak attractions, ergodic, diffusive liquids result, with short-lived bonds between the stars. As the attraction strength grows, the whole system forms a percolating cluster, while at the same time the individual molecules are diffusive. Finally, arrested gels emerge when the attractions become strong. The conformation of the BCS in these solutions is found to be strongly affected by the concentration, with the stars assuming typically spherical, open configurations in seeking to maximize inter-star associations as opposed to the inter-star collapse that results at infinite dilution, giving rise to strongly aspherical shapes and reduced sizes.
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Affiliation(s)
- Ioana C Gârlea
- Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria.
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31
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Du Z, Shan Y, Luo J, Sun N, Ren B. Linear Alternating Associative Polymer with Ultrahigh Molecular Weight: Facile Preparation by Self-Assembly Assisted Dimerization of Anthracene and Rheology in Aqueous Solution. ACS Macro Lett 2019; 8:279-284. [PMID: 35650829 DOI: 10.1021/acsmacrolett.9b00028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alternating associative polymers (AAPs) containing more than two species of alternating hydrophobic and hydrophilic units can form unique physical network and perform interesting rheological behavior in aqueous solution. In this work, an AAP was prepared through self-assembly assisted dimerization of an anthracene-functionalized telechelic associative polymer (AnTAP) in aqueous solution by light irradiation. It is demonstrated that AnTAP can in situ chain extend to AAP with well-defined linear structure and ultrahigh molecular weight through dimerization reaction of anthracene moieties in the core of micelle under light irradiation. Meanwhile, the solution changes from viscoelastic liquid to a free-standing gel, because a physical network that cannot relax in a finite time window has developed along with the dimerization process. The results are therefore of interest not only for understanding the network structure and rheological properties of AAP solution, but also for preparing AAPs with ultrahigh molecular weight by self-assembly assisted photodimerization reactions.
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Affiliation(s)
- Zhukang Du
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
| | - Yuke Shan
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
| | - Jintian Luo
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
| | - Ning Sun
- Department of Material Technology, Jiangmen Polytechnic, Jiangmen 529090, China
| | - Biye Ren
- School of Material Science and Engineering, South China University of Technology, 381 Wushan Road, Guangzhou 510641, China
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32
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Wu S, Liu S, Zhang Z, Chen Q. Dynamics of Telechelic Ionomers with Distribution of Number of Ionic Stickers at Chain Ends. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b01776] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shilong Wu
- State Key Lab Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Renmin St. 5625, Changchun 130022, Jilin, P. R. China
- University of
Chinese Academy of Sciences, 19A Yuquan Rd., Beijing 100049, P. R. China
| | - Shuang Liu
- State Key Lab Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Renmin St. 5625, Changchun 130022, Jilin, P. R. China
| | - Zhijie Zhang
- State Key Lab Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Renmin St. 5625, Changchun 130022, Jilin, P. R. China
| | - Quan Chen
- State Key Lab Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Renmin St. 5625, Changchun 130022, Jilin, P. R. China
- University of
Chinese Academy of Sciences, 19A Yuquan Rd., Beijing 100049, P. R. China
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33
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Du L, Ghavaminejad A, Vatankhah-Varnoosfaderani M, Stadler FJ. Study of the Interactions of Zwitterions and Carbon Nanotubes by Nonlinear Rheology in an Aqueous Environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1964-1972. [PMID: 30340438 DOI: 10.1021/acs.langmuir.8b01778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Aqueous nanocomposite solutions of P(NIPAM) and P(NIPAM- co- N-(3-Sulfopropyl)- N-(methacryloxyethyl)- N,N-dimethylammonium betaine), a zwitterionic monomer with carbon nanotubes (CNT) as filler, were synthesized and characterized rheologically. While the influence of P(NIPAM) content and CNT content can be considered to be relatively minor, the introduction of a zwitterionic monomer (Zw) into the polymer leads to clear rheological traces of strong interactions between zwitterionic moieties and surface moieties on the CNTs, namely, a significantly lower nonlinearity limit and a lower modulus at high Zw contents and a higher modulus at intermediate contents due to adsorption of zwitterionic moieties on the CNT surface as well as a significantly lengthened time for the sample to adjust itself to the applied deformation, suggesting that the adsorbed polymer chains need to reorganize themselves significantly to accommodate to the applied strain γ0.
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Affiliation(s)
- Lei Du
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials , Shenzhen University , Shenzhen 518055 , PR China
- Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering , Shenzhen University , Shenzhen 516080 , PR China
| | - Amin Ghavaminejad
- Advanced Pharmaceutics & Drug Delivery Laboratory, Leslie Dan Faculty of Pharmacy , University of Toronto , 144 College Street , Toronto , Ontario , Canada M5S 3M2
- School of Semiconductor and Chemical Engineering , Chonbuk National University , Baekjero 567, Deokjin-gu , Jeonju , Jeonbuk 561-756 , Republic of Korea
| | - Mohammad Vatankhah-Varnoosfaderani
- Singular Genomics Systems Inc. , 10931 N. Torrey Pines Road , La Jolla , California , 92037 , United States
- School of Semiconductor and Chemical Engineering , Chonbuk National University , Baekjero 567, Deokjin-gu , Jeonju , Jeonbuk 561-756 , Republic of Korea
| | - Florian J Stadler
- College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials , Shenzhen University , Shenzhen 518055 , PR China
- School of Semiconductor and Chemical Engineering , Chonbuk National University , Baekjero 567, Deokjin-gu , Jeonju , Jeonbuk 561-756 , Republic of Korea
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34
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Chen H, Liu W, Hong M, Zhang E, Dai X, Chen Q, Yang W, Xue Y, Qiu X, Ji X. Associative behavior of polyimide/cyclohexanone solutions. RSC Adv 2019; 9:27455-27463. [PMID: 35529184 PMCID: PMC9070761 DOI: 10.1039/c9ra05538j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 08/23/2019] [Indexed: 12/22/2022] Open
Abstract
Our previous work has demonstrated that soluble polyimide with relatively weak interaction can be transformed from neutral polymer to associative polymer by increasing molecular weight. Thus, it is necessary to find another way to vary the relatively weak interaction strength, i.e. variation of solvent quality. Herein, viscoelastic behaviors are examined for 2,2-bis(3,4-dicarboxy-phenyl) hexafluoropropane dianhydride (6FDA)-2,2′-bis(trifluoromethyl)-4,4′-diam (TFDB) polyimide (PI), with a relatively low molecular weight (Mw) of 88 000 g mol−1, dissolved in cyclohexanone (CYC). The scaling relationship between viscosity (η0–ηs) and volume fraction is in good agreement with the associative polymer theory proposed by Rubinstein and Semenov. Oscillatory rheological results indicate that the PI solution tends to become a gel with increased volume fraction. The synchrotron radiation small-angle X-ray scattering results imply the existence of dense aggregates in the concentrated PI/CYC solutions. Shear thickening and thinning behaviors are observed in the solutions, and the shear thickening behavior of polyimide solution has not been reported in literature. Their mechanisms are studied by conducting dynamic and steady rheological experiments. Thus, enhancing the relatively weak interaction strength can also make the low Mw polyimide show associative polymer behavior. This work can help us to gain deep insight into polyimide solution properties from dilute to semidilute entangled solutions, and will guide the preparation of polyimide solutions for different processing. Enhancing the relatively weak interaction strength through varying the solvent quality can transform PI from a neutral polymer to an associative polymer.![]()
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35
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Martinetti L, Carey-De La Torre O, Schweizer KS, Ewoldt RH. Inferring the Nonlinear Mechanisms of a Reversible Network. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01295] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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36
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Ginzburg VV, Chatterjee T, Nakatani AI, Van Dyk AK. Oscillatory and Steady Shear Rheology of Model Hydrophobically Modified Ethoxylated Urethane-Thickened Waterborne Paints. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10993-11002. [PMID: 30142976 DOI: 10.1021/acs.langmuir.8b01711] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hydrophobically modified ethoxylated urethane (HEUR) thickeners are widely used as rheology modifiers for waterborne paints. Although the rheology of HEUR solutions in water is fairly well-understood, their impact on the rheology of waterborne latex/pigment suspensions (formulated paints) is more complicated. We study the shear rheology of model HEUR/latex/TiO2 suspensions in water and investigate the dependence of both oscillatory and steady shear behaviors on the strength of the HEUR hydrophobes. We observe that in both oscillatory and steady shear experiments, rheological curves could be shifted onto a single master curve, demonstrating a "time-hydrophobe superposition". We also note that the oscillatory shear behavior exhibits a power-law spectrum of relaxation times, unlike the single-Maxwellian behavior of pure HEUR solutions. On the basis of these results and earlier experimental and theoretical findings, we propose that the rheology of the HEUR-thickened latex/TiO2 suspensions is mainly determined by the transient network of HEUR-bridged latex particles, with a broad distribution of the characteristic lifetimes of the bridge. The model is found to be in good qualitative and semiquantitative agreement with the experiments for both steady shear and oscillatory shear.
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Affiliation(s)
- Valeriy V Ginzburg
- Materials Science and Engineering , The Dow Chemical Company , Building 1702 , Midland , Michigan 48674 , United States
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37
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Du Z, Yan X, Dong R, Ke K, Ren B, Tong Z. Unusual Transient Network and Rheology of a Photoresponsive Telechelic Associative Model Polymer in Aqueous Solution Induced by Dimerization of Coumarin End Groups. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b01514] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhukang Du
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaolong Yan
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Renfeng Dong
- School
of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Kang Ke
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Biye Ren
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhen Tong
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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38
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Influence of substituted structure of Percec-type mini-dendritic end groups on aggregation and rheology of hydrophobically modified ethoxylated urethanes (HEURs) in aqueous solution. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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39
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Omar AK, Wang ZG. Shear-Induced Heterogeneity in Associating Polymer Gels: Role of Network Structure and Dilatancy. PHYSICAL REVIEW LETTERS 2017; 119:117801. [PMID: 28949208 DOI: 10.1103/physrevlett.119.117801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Indexed: 06/07/2023]
Abstract
We study associating polymer gels under steady shear using Brownian dynamics simulation to explore the interplay between the network structure, dynamics, and rheology. For a wide range of flow rates, we observe the formation of shear bands with a pronounced difference in shear rate, concentration, and structure. A striking increase in the polymer pressure in the gradient direction with shear, along with the inherently large compressibility of the gels, is shown to be a crucial factor in destabilizing homogeneous flow through shear-gradient concentration coupling. We find that shear has only a modest influence on the degree of association, but induces marked spatial heterogeneity in the network connectivity. We attribute the increase in the polymer pressure (and polymer mobility) to this structural reorganization.
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Affiliation(s)
- Ahmad K Omar
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - Zhen-Gang Wang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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40
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Chatterjee T, Van Dyk AK, Ginzburg VV, Nakatani AI. Formulation-Controlled Positive and Negative First Normal Stress Differences in Waterborne Hydrophobically Modified Ethylene Oxide Urethane (HEUR)-Latex Suspensions. ACS Macro Lett 2017; 6:716-720. [PMID: 35650876 DOI: 10.1021/acsmacrolett.7b00174] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Hydrophobically modified ethylene oxide urethane (HEUR) associative thickeners are widely used to modify the rheology of waterborne paints. Understanding the normal stress behavior of the HEUR-based paints under high shear is critical for many applications such as brush drag and spreading. We observed that the first normal stress difference, N1, at high shear (large Weissenberg number) can be positive or negative depending on the HEUR hydrophobe strength and concentration. We propose that the algebraic sign of the N1 is primarily controlled by two factors: (a) adsorption of HEURs on the latex surface and (b) the ability of HEURs to form transient molecular bridges between latex particles. Such transient bridges are favored for dispersions with small interparticle distances and dense surface coverages; in these systems; HEUR-bridged latex microstructures flow-align in high shear and exhibit positive N1. In the absence of transient bridges (large interparticle distances, low surface coverage), the dispersion rheology is similar to that of weakly interacting spheres, exhibiting negative N1. The results are summarized in a simplified phase diagram connecting formulation, microstructure, and the N1 behavior.
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Affiliation(s)
- Tirtha Chatterjee
- Materials
Science and Engineering, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Antony K. Van Dyk
- Dow
Coatings Materials, The Dow Chemical Company, Collegeville, Pennsylvania 19426, United States
| | - Valeriy V. Ginzburg
- Materials
Science and Engineering, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Alan I. Nakatani
- Analytical
Sciences, The Dow Chemical Company, Collegeville, Pennsylvania 19426, United States
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41
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Huang G, Zhang H, Liu Y, Chang H, Zhang H, Song H, Xu D, Shi T. Strain Hardening Behavior of Poly(vinyl alcohol)/Borate Hydrogels. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02393] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Gang Huang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Graduate School
of the Chinese Academy of Sciences, Beijing 100039, China
| | - Huanhuan Zhang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Graduate School
of the Chinese Academy of Sciences, Beijing 100039, China
| | - Yulin Liu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- College
of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Haijian Chang
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- College
of Materials Science and Engineering, Jilin University, Changchun 130025, China
| | - Hongwei Zhang
- Department
of Food Science, Rutgers, The State University of New Jersey, 65 Dudley
Road, New Brunswick, New
Jersey 08901, United States
| | - Hongzan Song
- College
of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Donghua Xu
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Tongfei Shi
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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42
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Du Z, Ren B, Chang X, Dong R, Tong Z. An End-Bifunctionalized Hydrophobically Modified Ethoxylated Urethane Model Polymer: Multiple Stimuli-Responsive Aggregation and Rheology in Aqueous Solution. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02301] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Zhukang Du
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Biye Ren
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xueyi Chang
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Renfeng Dong
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zhen Tong
- School of Materials Science
and Engineering, South China University of Technology, Guangzhou 510640, China
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43
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Parmar IA, Shedge AS, Badiger MV, Wadgaonkar PP, Lele AK. Thermo-reversible sol–gel transition of aqueous solutions of patchy polymers. RSC Adv 2017. [DOI: 10.1039/c6ra27030a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aqueous solutions of an amphiphilic thermoreversible patchy polymer show abrupt gelation upon cooling by the combined effect of percolation and transition from intra to intermolecular hydrophobic associations.
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Affiliation(s)
- Indravadan A. Parmar
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Aarti S. Shedge
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Manohar V. Badiger
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Prakash P. Wadgaonkar
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Ashish K. Lele
- Polymer Science and Engineering Division
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
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44
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Huang C, Chen Q, Weiss RA. Nonlinear Rheology of Random Sulfonated Polystyrene Ionomers: The Role of the Sol–Gel Transition. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b02057] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Chongwen Huang
- Department
of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Quan Chen
- State
Key Laboratory of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - R. A. Weiss
- Department
of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
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45
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Wang F, Peng J, Dong R, Chang X, Ren B, Tong Z. Highly efficient hydrophobically modified ethoxylated urethanes (HEURs) end-functionalized by two-tail dendritic hydrophobes: Synthesis, solution rheological behavior and thickening in latex. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Aggregation and Rheology of an Azobenzene-Functionalized Hydrophobically Modified Ethoxylated Urethane in Aqueous Solution. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00633] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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47
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Kwon Y, Matsumiya Y, Watanabe H. Viscoelastic and Orientational Relaxation of Linear and Ring Rouse Chains Undergoing Reversible End-Association and Dissociation. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00424] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Youngdon Kwon
- School of Chemical Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746, Korea
| | - Yumi Matsumiya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Hiroshi Watanabe
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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48
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Meng F, Terentjev EM. Transient Network at Large Deformations: Elastic⁻Plastic Transition and Necking Instability. Polymers (Basel) 2016; 8:E108. [PMID: 30979198 PMCID: PMC6432060 DOI: 10.3390/polym8040108] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 03/16/2016] [Accepted: 03/21/2016] [Indexed: 11/16/2022] Open
Abstract
We theoretically investigate the mechanical response of a transient network, which is characterised by dynamically breaking and re-forming crosslinks, and accounts for the finite chain extensibility (thus permitting the large deformations to be described). We build the general theory that incorporates the widely accepted empirical model of hyper-elasticity at large deformations (the Gent model) and naturally includes the microscopic behavior of transient crosslinks under the local tension applied to them. The full analytical expression for the elastic energy, or equivalently, the constitutive relation for arbitrary deformation is derived, and then the example of uniaxial tensile strain is focused on. In this case, we show that the mechanical response depends on the ratio of the imposed strain rate and the breakage rate of the crosslink: the system flows plastically (over a yield point) when the strain rate is much smaller than the breakage rate, while it remains elastic when the strain rate is much larger than the breakage rate. There is a broad range of this transition when the elastic and plastic regions of the sample coexist, and a resulting necking instability occurs. As a generalisation, we also consider a dual transient network, with two components penetrating each other, each having its own microscopic crosslink dynamics. The two networks add their local forces and share the deformation; we find that the network with a lower breakage rate determines the global deformation of the system.
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Affiliation(s)
- Fanlong Meng
- Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
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49
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Meng F, Pritchard RH, Terentjev EM. Stress Relaxation, Dynamics, and Plasticity of Transient Polymer Networks. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02667] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fanlong Meng
- Cavendish Laboratory, University of Cambridge, JJ Thomson
Avenue, Cambridge CB3 0HE, U.K
| | - Robyn H. Pritchard
- Cavendish Laboratory, University of Cambridge, JJ Thomson
Avenue, Cambridge CB3 0HE, U.K
| | - Eugene M. Terentjev
- Cavendish Laboratory, University of Cambridge, JJ Thomson
Avenue, Cambridge CB3 0HE, U.K
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50
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Yang T, Choi SK, Lee YR, Cho Y, Kim JW. Novel associative nanoparticles grafted with hydrophobically modified zwitterionic polymer brushes for the rheological control of aqueous polymer gel fluids. Polym Chem 2016. [DOI: 10.1039/c6py00359a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Novel associative nanoparticles (ANPs) are synthesized by grafting poly(2-methacryloyloxyethyl phosphorylcholine-co-stearyl methacrylate) polymer brushes on silica nanoparticles by using surface-mediated living radical polymerization.
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Affiliation(s)
- Taeseung Yang
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
| | - Sang Koo Choi
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
- Department of Applied Chemistry
| | - Yea Ram Lee
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
| | | | - Jin Woong Kim
- Department of Bionano Technology
- Hanyang University
- Ansan
- Republic of Korea
- Department of Applied Chemistry
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