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Yang J, Chen Y, Yang Z, Dai L, Choi H, Meng Z. Unveiling the Nanoconfinement Effect on Crystallization of Semicrystalline Polymers Using Coarse-Grained Molecular Dynamics Simulations. Polymers (Basel) 2024; 16:1155. [PMID: 38675074 PMCID: PMC11053607 DOI: 10.3390/polym16081155] [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: 03/28/2024] [Revised: 04/13/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Semicrystalline polymers under nanoconfinement show distinct structural and thermomechanical properties compared to their bulk counterparts. Despite extensive research on semicrystalline polymers under nanoconfinement, the nanoconfinement effect on the local crystallization process and the unique structural evolution of such polymers have not been fully understood. In this study, we unveil such effects by using coarse-grained molecular dynamics simulations to study the crystallization process of a model semicrystalline polymer-polyvinyl alcohol (PVA)-under different levels of nanoconfinement induced by nanoparticles that are represented implicitly. We quantify in detail the evolution of the degree of crystallinity (XC) of PVA and examine distinct crystalline regions from simulation results. The results show that nanoconfinement can promote the crystallization process, especially at the early stage, and the interfaces between nanoparticles and polymer can function as crystallite nucleation sites. In general, the final XC of PVA increases with the levels of nanoconfinement. Further, nanoconfined cases show region-dependent XC with higher and earlier increase of XC in regions closer to the interfaces. By tracking region-dependent XC evolution, our results indicate that nanoconfinement can lead to a heterogenous crystallization process with a second-stage crystallite nucleation in regions further away from the interfaces. In addition, our results show that even under very high cooling rates, the nanoconfinement still promotes the crystallization of PVA. This study provides important insights into the underlying mechanisms for the intricate interplay between nanoconfinement and the crystallization behaviors of semicrystalline polymer, with the potential to guide the design and characterization of semicrystalline polymer-based nanocomposites.
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Affiliation(s)
| | | | | | | | | | - Zhaoxu Meng
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29631, USA; (J.Y.); (Y.C.); (Z.Y.); (L.D.); (H.C.)
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2
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Hussain MA, Yamamoto T, Adil SF, Yao S. Coarse-Grained Simulations on Polyethylene Crystal Network Formation and Microstructure Analysis. Polymers (Basel) 2024; 16:1007. [PMID: 38611266 PMCID: PMC11013834 DOI: 10.3390/polym16071007] [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: 03/04/2024] [Revised: 03/25/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
Understanding and characterizing semi-crystalline models with crystalline and amorphous segments is crucial for industrial applications. A coarse-grained molecular dynamics (CGMD) simulations study probed the crystal network formation in high-density polyethylene (HDPE) from melt, and shed light on tensile properties for microstructure analysis. Modified Paul-Yoon-Smith (PYS/R) forcefield parameters are used to compute the interatomic forces among the PE chains. The isothermal crystallization at 300 K and 1 atm predicts the multi-nucleus crystal growth; moreover, the lamellar crystal stems and amorphous region are alternatively oriented. A one-dimensional density distribution along the alternative lamellar stems further confirms the ordering of the lamellar-stack orientation. Using this plastic model preparation approach, the semi-crystalline model density (ρcr) of ca. 0.913 g·cm-3 and amorphous model density (ρam) of ca. 0.856 g·cm-3 are obtained. Furthermore, the ratio of ρcr/ρam ≈ 1.06 is in good agreement with computational (≈1.096) and experimental (≈1.14) data, ensuring the reliability of the simulations. The degree of crystallinity (χc) of the model is ca. 52% at 300 K. Nevertheless, there is a gradual increase in crystallinity over the specified time, indicating the alignment of the lamellar stems during crystallization. The characteristic stress-strain curve mimicking tensile tests along the z-axis orientation exhibits a reversible sharp elastic regime, tensile strength at yield ca. 100 MPa, and a non-reversible tensile strength at break of 350%. The cavitation mechanism embraces the alignment of lamellar stems along the deformation axis. The study highlights an explanatory model of crystal network formation for the PE model using a PYS/R forcefield, and it produces a microstructure with ordered lamellar and amorphous segments with robust mechanical properties, which aids in predicting the microstructure-mechanical property relationships in plastics under applied forces.
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Affiliation(s)
| | - Takashi Yamamoto
- Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 753-8512, Japan
| | - Syed Farooq Adil
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Shigeru Yao
- Central Research Institute, Fukuoka University, Fukuoka 814-0180, Japan
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3
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Wu HC, Nikzad S, Zhu C, Yan H, Li Y, Niu W, Matthews JR, Xu J, Matsuhisa N, Arunachala PK, Rastak R, Linder C, Zheng YQ, Toney MF, He M, Bao Z. Highly stretchable polymer semiconductor thin films with multi-modal energy dissipation and high relative stretchability. Nat Commun 2023; 14:8382. [PMID: 38104194 PMCID: PMC10725446 DOI: 10.1038/s41467-023-44099-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 11/30/2023] [Indexed: 12/19/2023] Open
Abstract
Stretchable polymer semiconductors (PSCs) have seen great advancements alongside the development of soft electronics. But it remains a challenge to simultaneously achieve high charge carrier mobility and stretchability. Herein, we report the finding that stretchable PSC thin films (<100-nm-thick) with high stretchability tend to exhibit multi-modal energy dissipation mechanisms and have a large relative stretchability (rS) defined by the ratio of the entropic energy dissipation to the enthalpic energy dissipation under strain. They effectively recovered the original molecular ordering, as well as electrical performance, after strain was released. The highest rS value with a model polymer (P4) exhibited an average charge carrier mobility of 0.2 cm2V-1s-1 under 100% biaxial strain, while PSCs with low rS values showed irreversible morphology changes and rapid degradation of electrical performance under strain. These results suggest rS can be used as a parameter to compare the reliability and reversibility of stretchable PSC thin films.
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Affiliation(s)
- Hung-Chin Wu
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, US
| | - Shayla Nikzad
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, US
| | - Chenxin Zhu
- Department of Electrical Engineering, Stanford University, Stanford, CA, 94305, US
| | - Hongping Yan
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, US
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, US
| | - Yang Li
- Corning Incorporated, Corning, NY, 14831, US
| | - Weijun Niu
- Corning Incorporated, Corning, NY, 14831, US
| | | | - Jie Xu
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, US
- Nanoscience and Technology Division, Argonne National Laboratory, Lemont, IL, 60439, US
| | - Naoji Matsuhisa
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, US
- Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo, 153-8505, Japan
| | | | - Reza Rastak
- Department of Civil and Environmental Engineering, Stanford University, Stanford, CA, 94305, US
| | - Christian Linder
- Department of Civil and Environmental Engineering, Stanford University, Stanford, CA, 94305, US
| | - Yu-Qing Zheng
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, US
| | - Michael F Toney
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, US
- Department of Chemical and Biological Engineering and Renewable and Sustainable Energy Institute (RASEI), University of Colorado Boulder, Boulder, CO, 80309, US
| | - Mingqian He
- Corning Incorporated, Corning, NY, 14831, US.
| | - Zhenan Bao
- Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, US.
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4
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Wang C, Yang B, Xiang R, Ji J, Wu Y, Tan S. High-Saline-Enabled Hydrophobic Homogeneous Cross-Linking for Extremely Soft, Tough, and Stretchable Conductive Hydrogels as High-Sensitive Strain Sensors. ACS NANO 2023; 17:23194-23206. [PMID: 37926964 DOI: 10.1021/acsnano.3c09884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Design of admirable conductive hydrogels combining robust toughness, soft flexibility, desirable conductivity, and freezing resistance remains daunting challenges for meeting the customized and critical demands of flexible and wearable electronics. Herein, a promising and facile strategy to prepare hydrogels tailored to these anticipated demands is proposed, which is prepared in one step by homogeneous cross-linking of acrylamide using hydrophobic divinylbenzene stabilized by micelles under saturated high-saline solutions. The influence of high-saline environments on the hydrogel topology and mechanical performance is investigated. The high-saline environments suppress the size of hydrophobic cross-linkers in micelles during hydrogel polymerization, which weaken the dynamic hydrophobic associations to soften the hydrogels. Nevertheless, the homogeneous cross-linked networks ensure antifracture during ultralarge deformations. The obtained hydrogels show special mechanical performance combining extremely soft deformability and antifracture features (Young's modulus, 5 kPa; stretchability, 10200%; toughness, 134 kJ m-2; and excellent anticrack propagation). The saturated-saline environments also endow the hydrogels with desirable ion conductivity (106 mS cm-1) and freezing resistance (<20 °C). These comprehensive properties of the obtained hydrogels are quite suitable for flexible electronic applications, which is demonstrated by the high sensitivity and durability of the derived strain sensors.
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Affiliation(s)
- Caihong Wang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, People's Republic of China
| | - Baibin Yang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, People's Republic of China
| | - Ruihan Xiang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, People's Republic of China
| | - Junyi Ji
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, People's Republic of China
| | - Yong Wu
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, People's Republic of China
| | - Shuai Tan
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu 610065, People's Republic of China
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5
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Dienemann LL, Geller LC, Huang Y, Zenyuk IV, Panzer MJ. Understanding Lithium Dendrite Suppression by Hybrid Composite Separators: Indentation Measurements Informed by Operando X-ray Computed Tomography. ACS APPLIED MATERIALS & INTERFACES 2023; 15:8492-8501. [PMID: 36719130 DOI: 10.1021/acsami.2c20787] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
This study investigates the significance of the mechanics of hybrid particle-polymer separators in the stabilization of lithium metal interfaces by probing these properties in realistic conditions informed by X-ray microcomputed tomography (micro-CT). Elastic properties and viscoelastic behavior of inorganic microparticle-filled poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) films are characterized using a nanoindentation experiment whose displacement simulates the interfacial response seen in operando micro-CT. It is determined that the dominating mechanical behavior in this hybrid separator relevant to lithium metal cell conditions is comprised of viscoelasticity. Consistent with this finding, along with correlations across other physicochemical properties, a mechanism describing the improvement of lithium metal cycling performance according to inorganic filler type and content is proposed.
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Affiliation(s)
- Lara L Dienemann
- Department of Mechanical Engineering, Tufts University, Medford, Massachusetts02155, United States
| | - Lillian C Geller
- Department of Chemical & Biological Engineering, Tufts University, Medford, Massachusetts02155, United States
| | - Ying Huang
- Department of Chemical & Biomolecular Engineering, University of California Irvine; National Fuel Cell Research CenterIrvine, California92697, United States
| | - Iryna V Zenyuk
- Department of Chemical & Biomolecular Engineering, University of California Irvine; National Fuel Cell Research CenterIrvine, California92697, United States
| | - Matthew J Panzer
- Department of Chemical & Biological Engineering, Tufts University, Medford, Massachusetts02155, United States
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6
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Schmid F. Understanding and Modeling Polymers: The Challenge of Multiple Scales. ACS POLYMERS AU 2022. [DOI: 10.1021/acspolymersau.2c00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Friederike Schmid
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 9, 55128Mainz, Germany
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7
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Tan S, Wang C, Yang B, Luo J, Wu Y. Unbreakable Hydrogels with Self-Recoverable 10 200% Stretchability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2206904. [PMID: 36000832 DOI: 10.1002/adma.202206904] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Design of tough hydrogels maintaining structural integrity under multivariable mechanical loads remains hugely challenging because the anticipated characteristics such as stretchability, strength, toughness, and fracture resistance can hardly be compatible. Herein, a simple but robust hydrogel network formed by copolymerization of divinyl benzene with acrylamide in micellar solutions for ultra-high fracture resistance and self-recoverable stretchability is proposed. The network provides dynamic association of hydrophobic domains and homogeneous crosslinking of hydrophilic chains, which shows step-by-step deformation process. The dynamic associations allow recoverable small deformations, then the homogeneous crosslinking ensures reversible unfolding and alignment of polymer chains to self-strengthen for ultra-large deformations without crack propagations. The resultant hydrogels exhibit comprehensive unbreakable feature with self-recoverable ultra-high stretchability (100% recovery from 10 200% strain), superior fracture resistance (toughness > 26 kJ m-2 ), and anticrack propagation and fatigue (fatigue threshold: ≈2.5 kJ m-2 ). Even the prenotched hydrogels can undergo tens cyclic loads at 10 200% strain and thousands cyclic loads at 200% strain without noticeable changes in mechanical performance. The robust network prepared from homogeneous hydrophobic crosslinking provides a facile approach and a new mechanism to explore tough hydrogels with superior antifracture and extreme self-recoverable deformability for diverse applications.
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Affiliation(s)
- Shuai Tan
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Caihong Wang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Baibin Yang
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Jie Luo
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Yong Wu
- School of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
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8
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Fall WS, Baschnagel J, Lhost O, Meyer H. Role of Short Chain Branching in Crystalline Model Polyethylenes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00938] [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)
- William S. Fall
- Institut Charles Sadron, Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg Cedex, France
| | - Jörg Baschnagel
- Institut Charles Sadron, Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg Cedex, France
| | - Olivier Lhost
- Total Research & Technology Feluy, Zone Industrielle Feluy C, B-7181 Seneffe, Belgium
| | - Hendrik Meyer
- Institut Charles Sadron, Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg Cedex, France
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9
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Ma R, Xu D, Luo CF. Effect of Crystallization and Entropy Contribution Upon the Mechanical Response of Polymer Nano-fibers: A Steered Molecular Dynamics Study. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2817-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Effects of Mechanical Stress on Insulation Structure and Performance of HV Cable. Polymers (Basel) 2022; 14:polym14142927. [PMID: 35890703 PMCID: PMC9317511 DOI: 10.3390/polym14142927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 12/10/2022] Open
Abstract
Mechanical stresses generated during manufacturing and laying process of high voltage cables can result in degradation of insulation properties, affecting the stable operation of the transmission system. Traditional test methods for testing the effect of mechanical stress on the insulation properties of polyethylene still have some shortcomings to be explored and it is able to explain the changes of the insulation properties of polyethylene under mechanical stress from a microscopic perspective. In order to further study the effect of stress on the insulation properties of polyethylene, microstructural changes, the breakdown field strength, conductivity and charge distribution of polyethylene at different elongation rates are investigated by a combination of experimental and molecular dynamics simulations. The results show that the increase in stress leads to a decrease in crystallinity and microcrystalline size of the material decrease. The untwisting and orientation of the polyethylene molecular chains during the stretching process can create cavities, resulting in an uneven sample distribution and thickness reduction, leading to a reduction in the breakdown field strength. Meanwhile, some crystal regions are transformed into amorphous regions. The loose amorphous regions facilitate the directional migration of carriers, resulting in the increase of conductivity. When the elongation ratio is smaller, the distance between the molecular chains increases and the trap depth of the specimen becomes shallower. This facilitates the migration of ions and electrons and increases the rate of decay of the surface potential. When the stretch is further increased, new traps are created by broken molecular chains to limit the movement of charges, decreasing the decay rate of the surface potential and reducing the insulation properties of the polyethylene. Meanwhile, the molecular dynamics model of semi-crystalline polyethylene was developed to observe the microstructure and energy changes during the stretching process. The conclusions in terms of tensile tests were verified from a microscopic perspective.
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11
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Entanglement on Nucleation Barrier of Polymer Crystal. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2780-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Optimal Entanglement of Polymers Promotes the Formation of Highly Oriented Fibers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Song Y, Ma Z, Zhang W. Manipulation of a Single Polymer Chain: From the Nanomechanical Properties to Dynamic Structure Evolution. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00076] [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)
- Yu Song
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ziwen Ma
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wenke Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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14
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Li C, Shang Y, Li J, Jiang S. Structure/property relationship of semicrystalline polymers during tensile deformation: a molecular dynamics approach. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-04975-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Structural evolution and related physical properties of machine direction oriented poly(butylene succinate-co-adipate) films. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Müller M. Selection of Advances in Theory and Simulation during the First Decade of ACS Macro Letters. ACS Macro Lett 2021; 10:1629-1635. [PMID: 35549151 DOI: 10.1021/acsmacrolett.1c00750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marcus Müller
- Institute for Theoretical Physics, Georg-August-University, 37077 Göttingen, Germany
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17
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McCutcheon CJ, Zhao B, Ellison CJ, Bates FS. Crazing and Toughness in Diblock Copolymer-Modified Semicrystalline Poly( l-lactide). Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Charles J. McCutcheon
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Boran Zhao
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christopher J. Ellison
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Frank S. Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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18
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Nie C, Peng F, Xu T, Ding Y, Sheng J, Chen W, Li L. Biaxial Stretch-Induced Crystallization of Polymers: A Molecular Dynamics Simulation Study. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01606] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Cui Nie
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Fan Peng
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Tingyu Xu
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yiwei Ding
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Junfang Sheng
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Wei Chen
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Liangbin Li
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei 230026, China
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19
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Wang H, Liu H, Ding Z, Li N. Experimental and constitutive modelling studies of semicrystalline thermoplastics under solid-state stamp forming conditions. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Nagaraj H, Clavier G, Latour B, Dequidt A, Devémy J, Garruchet S, Goujon F, Martzel N, Blaak R, Munch É, Malfreyt P. Strain induced crystallization of polymers at and above the crystallization temperature by coarse-grained simulations. J Chem Phys 2021; 154:234902. [PMID: 34241267 DOI: 10.1063/5.0050562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We examine the behavior of short and long polymers by means of coarse-grained computer simulations of a by-polyvinyl alcohol inspired model. In particular, we focus on the structural changes in the monomer and polymer scales during cooling and the application of uni-axial true strain. The straining of long polymers results in the formation of a semi-crystalline system at temperatures well above the crystallization temperature, which allows for the study of strain induced crystallization.
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Affiliation(s)
- Hemanth Nagaraj
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Germain Clavier
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Benoit Latour
- Manufacture Française des Pneumatiques Michelin, 23, Place des Carmes, 63040 Clermont-Ferrand, France
| | - Alain Dequidt
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Julien Devémy
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Sébastien Garruchet
- Manufacture Française des Pneumatiques Michelin, 23, Place des Carmes, 63040 Clermont-Ferrand, France
| | - Florent Goujon
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Nicolas Martzel
- Manufacture Française des Pneumatiques Michelin, 23, Place des Carmes, 63040 Clermont-Ferrand, France
| | - Ronald Blaak
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Étienne Munch
- Manufacture Française des Pneumatiques Michelin, 23, Place des Carmes, 63040 Clermont-Ferrand, France
| | - Patrice Malfreyt
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
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21
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Yoon S, Lee KJ, Park S, Kim T, Im SH, Ahn H, Son HJ. Development of a Healable Bulk Heterojunction Using Conjugated Donor Polymers Based on Thymine-Functionalized Side Chains. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02673] [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)
- Seongwon Yoon
- Advanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Keun Jun Lee
- Advanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Sungmin Park
- Advanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Taehee Kim
- Advanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Hyungju Ahn
- Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
| | - Hae Jung Son
- Advanced Photovoltaics Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
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22
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Higuchi Y. Coarse-grained molecular dynamics simulations of void generation and growth processes in the fracture of the lamellar structure of polyethylene. Phys Rev E 2021; 103:042502. [PMID: 34005872 DOI: 10.1103/physreve.103.042502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
We investigate the void generation and growth process in semicrystalline polymers by large-scale coarse-grained molecular dynamics simulations. Voids are generated in the amorphous layers and grow spherically and then cylindrically, consistent with the results of previous experiments. Interestingly, the fusion of voids is indicated to enlarge the voids in the direction perpendicular to the stretching direction, but not beyond the crystalline layers. The orientational order along the stretching direction increased sharply before void generation, but the increase leveled off afterward. The simulations also clearly reveal that the crystalline layers break but do not bend in the fragmentation process. The dependence of the void growth process on stretching velocity and the stability levels of voids at constant strain are also discussed.
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Affiliation(s)
- Yuji Higuchi
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8581, Japan and Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
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23
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Crystalline grain refinement toughened isotactic polypropylene through rapid quenching of stretched melt. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123435] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Sung S, Mayadevi T, Min K, Lee J, Chae JE, Kim TH. Crosslinked PPO-based anion exchange membranes: The effect of crystallinity versus hydrophilicity by oxygen-containing crosslinker chain length. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118774] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Strain recovery and stress relaxation behaviour of multiblock copolymer blends physically cross-linked with PLA stereocomplexation. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122984] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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26
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Roberts TD, Yuan R, Xiang L, Delor M, Pokhrel R, Yang K, Aqad E, Marangoni T, Trefonas P, Xu K, Ginsberg NS. Direct Correlation of Single-Particle Motion to Amorphous Microstructural Components of Semicrystalline Poly(ethylene oxide) Electrolytic Films. J Phys Chem Lett 2020; 11:4849-4858. [PMID: 32510954 DOI: 10.1021/acs.jpclett.0c01318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Semicrystalline polymers constitute some of the most widely used materials in the world, and their functional properties are intimately connected to their structure on a range of length scales. Many of these properties depend on the micro- and nanoscale heterogeneous distribution of crystalline and amorphous phases, but this renders the interpretation of ensemble averaged measurements challenging. We use superlocalized widefield single-particle tracking in conjunction with AFM phase imaging to correlate the crystalline morphology of lithium-triflate-doped poly(ethylene oxide) thin films to the motion of individual fluorescent probes at the nanoscale. The results demonstrate that probe motion is intrinsically isotropic in amorphous regions and that, without altering this intrinsic diffusivity, closely spaced, often parallel, crystallite fibers anisotropically constrain probe motion along intercalating amorphous channels. This constraint is emphasized by the agreement between crystallite and anisotropic probe trajectory orientations. This constraint is also emphasized by the extent of the trajectory confinement correlated to the width of the measured gaps between adjacent crystallites. This study illustrates with direct nanoscale correlations how controlled and periodic arrangement of crystalline domains is a promising design principle for mass transport in semicrystalline polymer materials without compromising their mechanical stability.
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Affiliation(s)
- Trevor D Roberts
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Rongfeng Yuan
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Limin Xiang
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Milan Delor
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Ravi Pokhrel
- DuPont Electronics and Imaging, Marlborough, Massachusetts 01752, United States
| | - Ke Yang
- DuPont Electronics and Imaging, Marlborough, Massachusetts 01752, United States
| | - Emad Aqad
- DuPont Electronics and Imaging, Marlborough, Massachusetts 01752, United States
| | - Tomas Marangoni
- DuPont Electronics and Imaging, Marlborough, Massachusetts 01752, United States
| | - Peter Trefonas
- DuPont Electronics and Imaging, Marlborough, Massachusetts 01752, United States
| | - Ke Xu
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- STROBE, National Science Foundation Science and Technology Center, University of California Berkeley, Berkeley, California 94720, United States
| | - Naomi S Ginsberg
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
- STROBE, National Science Foundation Science and Technology Center, University of California Berkeley, Berkeley, California 94720, United States
- Department of Physics, University of California Berkeley, Berkeley, California 94720, United States
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoSciences Institute at Berkeley, Berkeley, California 94720, United States
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27
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Nébouy M, Morthomas J, Fusco C, Baeza GP, Chazeau L. Coarse-Grained Molecular Dynamics Modeling of Segmented Block Copolymers: Impact of the Chain Architecture on Crystallization and Morphology. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02549] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Nébouy
- Univ Lyon, INSA Lyon, CNRS, MATEIS, UMR5510, F-69621 Villeurbanne, France
| | - Julien Morthomas
- Univ Lyon, INSA Lyon, CNRS, MATEIS, UMR5510, F-69621 Villeurbanne, France
| | - Claudio Fusco
- Univ Lyon, INSA Lyon, CNRS, MATEIS, UMR5510, F-69621 Villeurbanne, France
| | - Guilhem P. Baeza
- Univ Lyon, INSA Lyon, CNRS, MATEIS, UMR5510, F-69621 Villeurbanne, France
| | - Laurent Chazeau
- Univ Lyon, INSA Lyon, CNRS, MATEIS, UMR5510, F-69621 Villeurbanne, France
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28
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Jabbari-Farouji S, Vandembroucq D. Compression-induced anti-nematic order in glassy and semicrystalline polymers. SOFT MATTER 2020; 16:102-106. [PMID: 31793978 DOI: 10.1039/c9sm01848d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We provide new insights into the molecular origin of the asymmetry between uniaxial tensile and compressive deformation of glassy and semicrystalline polymers using molecular dynamics simulations. The difference between the two responses strongly depends on the chain length and is the largest at intermediate chain lengths. Irrespective of chain length, the intra- and interchain organization of polymers under extension and compression are remarkably distinct. The chains align along the tensile axis leading to a global nematic order of the bonds and end-to-end vectors, whereas compression reorganizes polymers to lie in planes perpendicular to the compressive axis resulting in the emergence of an anti-nematic order and destruction of crystallinity. Regardless of the initial glassy or semicrystalline structure, the deformed state of polymers at large strains converge towards the same kind of structure that only depends on the deformation mode.
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Affiliation(s)
- Sara Jabbari-Farouji
- Institute of Physics, Johannes Gutenberg-University, Staudingerweg 7-9, 55128 Mainz, Germany and Institute of Physics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands.
| | - Damien Vandembroucq
- Laboratoire PMMH, UMR 7636 CNRS, ESPCI, PSL Research University, Sorbonne Université, Université Paris Diderot, Paris, France
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29
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Preparation of High-Elongation and High-Toughness Poly(l-lactide) Using Multi-Arm Methyl-β-Cyclodextrin-Poly(l-lactide). Macromol Res 2019. [DOI: 10.1007/s13233-020-8041-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Zhai Z, Fusco C, Morthomas J, Perez M, Lame O. Disentangling and Lamellar Thickening of Linear Polymers during Crystallization: Simulation of Bimodal and Unimodal Molecular Weight Distribution Systems. ACS NANO 2019; 13:11310-11319. [PMID: 31593434 DOI: 10.1021/acsnano.9b04459] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We have performed coarse-grained molecular dynamics simulations to study the isothermal crystallization of bimodal and unimodal molecular weight distribution (MWD) polymers with equivalent average molecular weight (Mw). By using primitive path analysis, we can monitor the entanglement evolution during the process of crystallization. We have discovered a quantitative correlation between the degree of disentanglement and crystallinity, indicating that chain disentanglement permits the process of crystallization. In addition, the crystalline stem length also displays a linear relation with the degree of disentanglement at different temperatures. Based on the observation in our simulations, we can build a scenario of the whole process of chain disentangling and lamellar thickening on the basis of chain sliding diffusion. Furthermore, we have enough evidence to infer that the temperature dependence of crystalline stem length is basically a result of temperature dependence of chain sliding diffusion. Our observations are also in agreement with Hikosaka's sliding diffusion theory. Compared to the unimodal system, the disentanglement degree of the bimodal system is more delayed than its crystallinity due to the slower chain sliding of the long-chain component; the bimodal system reaches a larger crystalline stem length at all temperatures due to the promotion of higher chain sliding mobility of the short-chain component.
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Affiliation(s)
- Zengqiang Zhai
- Univ de Lyon, INSA Lyon , MATEIS, UMR CNRS 5510, 69621 Villeurbanne , France
| | - Claudio Fusco
- Univ de Lyon, INSA Lyon , MATEIS, UMR CNRS 5510, 69621 Villeurbanne , France
| | - Julien Morthomas
- Univ de Lyon, INSA Lyon , MATEIS, UMR CNRS 5510, 69621 Villeurbanne , France
| | - Michel Perez
- Univ de Lyon, INSA Lyon , MATEIS, UMR CNRS 5510, 69621 Villeurbanne , France
| | - Olivier Lame
- Univ de Lyon, INSA Lyon , MATEIS, UMR CNRS 5510, 69621 Villeurbanne , France
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31
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Higuchi Y. Stress Transmitters at the Molecular Level in the Deformation and Fracture Processes of the Lamellar Structure of Polyethylene via Coarse-Grained Molecular Dynamics Simulations. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00636] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuji Higuchi
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8581, Japan
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira,
Aoba-ku, Sendai, Miyagi 980-8577, Japan
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32
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Song Y, Yang P, Jiang K, Zhang W. Force‐induced melting of a single polyethylene oxide chain from single crystal: Molecular behavior and influencing factors. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yu Song
- State Key Laboratory of Supramolecular Structure and Materials, College of ChemistryJilin University Changchun P. R. China
- Institute of Theoretical ChemistryJilin University Changchun P. R. China
| | - Peng Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of ChemistryJilin University Changchun P. R. China
| | - Ke Jiang
- State Key Laboratory of Supramolecular Structure and Materials, College of ChemistryJilin University Changchun P. R. China
| | - Wenke Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of ChemistryJilin University Changchun P. R. China
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33
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Song Y, Ma Z, Yang P, Zhang X, Lyu X, Jiang K, Zhang W. Single-Molecule Force Spectroscopy Study on Force-Induced Melting in Polymer Single Crystals: The Chain Conformation Matters. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02702] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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34
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Molecular dynamics simulation of linear polyethylene blends: Effect of molar mass bimodality on topological characteristics and mechanical behavior. POLYMER 2019. [DOI: 10.1016/j.polymer.2018.12.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Understanding structure-mechanics relationship of high density polyethylene based on stress induced lattice distortion. POLYMER 2019. [DOI: 10.1016/j.polymer.2018.11.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Grinyaev YV, Chertova NV, Shilko EV, Psakhie SG. The Continuum Approach to the Description of Semi-Crystalline Polymers Deformation Regimes: The Role of Dynamic and Translational Defects. Polymers (Basel) 2018; 10:E1155. [PMID: 30961080 PMCID: PMC6404089 DOI: 10.3390/polym10101155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 10/12/2018] [Accepted: 10/13/2018] [Indexed: 11/16/2022] Open
Abstract
This paper presents a new approach to describe the mechanical behavior of semi-crystalline polymers, the plastic deformation of which is determined by their two-phase structure. To describe the plastic behavior of semi-crystalline polymers, a two-phase model is used. In the framework of this model, one phase is in a hard (crystalline) state, and the other in a soft (amorphous) state. The two-phase material is modeled by a single-phase homogeneous continuum based on the approximation of the effective medium. It is assumed that two infinitely close material points of the continuum are connected in series by elastic and viscous bonds, which corresponds to the Maxwell model. It is shown that, in this case, the Maxwell continuum is a pseudo-Euclidean space. Generalizing the definition of defects from a three-dimensional space to a four-dimensional pseudo-Euclidean space, we obtained a dynamic system of nonlinear, interrelated equations to describe the behavior of translational-type defects in the solid phase and dynamic defects in the amorphous phase. As an example of an application for these equations, the phenomenon of creep under uniaxial loading is considered. It is shown that the formalism of the proposed two-phase model makes it possible to describe creep phenomenon regularities, which correspond to both the aging theory and the flow theory.
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Affiliation(s)
- Yurii V Grinyaev
- Institute of Strength Physics and Materials Science SB RAS, pr. Akademicheskii 2/4, 634055 Tomsk, Russia.
| | - Nadezhda V Chertova
- Institute of Strength Physics and Materials Science SB RAS, pr. Akademicheskii 2/4, 634055 Tomsk, Russia.
| | - Evgeny V Shilko
- Institute of Strength Physics and Materials Science SB RAS, pr. Akademicheskii 2/4, 634055 Tomsk, Russia.
- Physical Faculty, National Research Tomsk State University, 36 Lenin ave., 634050 Tomsk, Russia.
| | - Sergey G Psakhie
- Institute of Strength Physics and Materials Science SB RAS, pr. Akademicheskii 2/4, 634055 Tomsk, Russia.
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37
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Lam CN, Xu WS, Chen WR, Wang Z, Stanley CB, Carrillo JMY, Uhrig D, Wang W, Hong K, Liu Y, Porcar L, Do C, Smith GS, Sumpter BG, Wang Y. Scaling Behavior of Anisotropy Relaxation in Deformed Polymers. PHYSICAL REVIEW LETTERS 2018; 121:117801. [PMID: 30265084 DOI: 10.1103/physrevlett.121.117801] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/18/2018] [Indexed: 06/08/2023]
Abstract
Drawing an analogy to the paradigm of quasielastic neutron scattering, we present a general approach for quantitatively investigating the spatiotemporal dependence of structural anisotropy relaxation in deformed polymers by using small-angle neutron scattering. Experiments and nonequilibrium molecular dynamics simulations on polymer melts over a wide range of molecular weights reveal that their conformational relaxation at relatively high momentum transfer Q and short time can be described by a simple scaling law, with the relaxation rate proportional to Q. This peculiar scaling behavior, which cannot be derived from the classical Rouse and tube models, is indicative of a surprisingly weak direct influence of entanglement on the microscopic mechanism of single-chain anisotropy relaxation.
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Affiliation(s)
- Christopher N Lam
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Wen-Sheng Xu
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Wei-Ren Chen
- Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge, Tennessee 37831, USA
| | - Zhe Wang
- Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge, Tennessee 37831, USA
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - Christopher B Stanley
- Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge, Tennessee 37831, USA
| | - Jan-Michael Y Carrillo
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Oak Ridge National Laboratory, Computational Sciences and Engineering Division, Oak Ridge, Tennessee 37831, USA
| | - David Uhrig
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Weiyu Wang
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Kunlun Hong
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Yun Liu
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, USA
| | - Lionel Porcar
- Institut Laue-Langevin, B.P. 156, F-38042 Grenoble CEDEX 9, France
| | - Changwoo Do
- Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge, Tennessee 37831, USA
| | - Gregory S Smith
- Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge, Tennessee 37831, USA
| | - Bobby G Sumpter
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Oak Ridge National Laboratory, Computational Sciences and Engineering Division, Oak Ridge, Tennessee 37831, USA
| | - Yangyang Wang
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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38
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Yang P, Song Y, Feng W, Zhang W. Unfolding of a Single Polymer Chain from the Single Crystal by Air-Phase Single-Molecule Force Spectroscopy: Toward Better Force Precision and More Accurate Description of Molecular Behaviors. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01544] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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39
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Olsson PA, in ’t Veld PJ, Andreasson E, Bergvall E, Persson Jutemar E, Petersson V, Rutledge GC, Kroon M. All-atomic and coarse-grained molecular dynamics investigation of deformation in semi-crystalline lamellar polyethylene. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.07.075] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Yeh IC, Andzelm JW. Calculations of free energy of surface interactions in crystalline polyethylene. J Chem Phys 2018; 149:014701. [PMID: 29981561 DOI: 10.1063/1.5031026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The surface free energy of the crystalline polyethylene (PE) is an important property related with wettability, adhesion, and crystal growth. We investigated the profiles of free energy of surface interactions in the fully thermalized crystalline PE during debonding and shearing with atomistic molecular dynamics simulations using steered molecular dynamics and umbrella sampling techniques. The stress profiles during debonding and shearing processes were also estimated and compared with those obtained from analogous deformation simulations. We estimated the vacuum surface free energies of two different crystallographic surfaces (100) and (010) of the crystalline PE from the free energy changes during the debonding process. The estimated surface free energies were insensitive to the choice of simulation protocols after combining estimates from both forward and backward processes and were in excellent agreement with those obtained from an experiment on PE single crystal aggregates, which underscores the importance of the inclusion of the entropic contribution in the free energy calculated with the fully flexible interface adopted in this study.
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Affiliation(s)
- In-Chul Yeh
- Polymers Branch, Materials and Manufacturing Science Division, U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, USA
| | - Jan W Andzelm
- Polymers Branch, Materials and Manufacturing Science Division, U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, USA
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41
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Higuchi Y. Fracture processes of crystalline polymers using coarse-grained molecular dynamics simulations. Polym J 2018. [DOI: 10.1038/s41428-018-0067-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Higuchi Y, Saito K, Sakai T, Gong JP, Kubo M. Fracture Process of Double-Network Gels by Coarse-Grained Molecular Dynamics Simulation. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00124] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yuji Higuchi
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
- PRESTO, Japan Science and Technology Agency (JST),
4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8581, Japan
| | - Keisuke Saito
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Takamasa Sakai
- PRESTO, Japan Science and Technology Agency (JST),
4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Jian Ping Gong
- Faculty of Advanced Life Science and Soft Matter GI-CoRE, Hokkaido University, N21W11, Kita-ku, Sapporo 001-0021, Japan
| | - Momoji Kubo
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
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43
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Lin Y, Li X, Meng L, Chen X, Lv F, Zhang Q, Zhang R, Li L. Structural Evolution of Hard-Elastic Isotactic Polypropylene Film during Uniaxial Tensile Deformation: The Effect of Temperature. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00255] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuanfei Lin
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Xueyu Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Lingpu Meng
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Xiaowei Chen
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Fei Lv
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Qianlei Zhang
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Rui Zhang
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
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Oleinik EF, Mazo MA, Strel’nikov IA, Rudnev SN, Salamatina OB. Plasticity Mechanism for Glassy Polymers: Computer Simulation Picture. POLYMER SCIENCE SERIES A 2018. [DOI: 10.1134/s0965545x18010042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Xu WS, Carrillo JMY, Lam CN, Sumpter BG, Wang Y. Molecular Dynamics Investigation of the Relaxation Mechanism of Entangled Polymers after a Large Step Deformation. ACS Macro Lett 2018; 7:190-195. [PMID: 35610891 DOI: 10.1021/acsmacrolett.7b00900] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The chain retraction hypothesis of the tube model for nonlinear polymer rheology has been challenged by the recent small-angle neutron scattering (SANS) experiment (Wang, Z.; Lam, C. N.; Chen, W.-R.; Wang, W.; Liu, J.; Liu, Y.; Porcar, L.; Stanley, C. B.; Zhao, Z.; Hong, K.; Wang, Y., Fingerprinting Molecular Relaxation in Deformed Polymers. Phys. Rev. X 2017, 7, 031003). In this work, we further examine the microscopic relaxation mechanism of entangled polymer melts after a large step uniaxial extension by using large-scale molecular dynamics simulation. We show that the unique structural features associated with the chain retraction mechanism of the tube model are absent in our simulations, in agreement with the previous experimental results. In contrast to SANS experiments, molecular dynamics simulations allow us to accurately and unambiguously determine the evolution of the radius of gyration tensor of a long polymer chain after a large step deformation. Contrary to the prediction of the tube model, our simulations reveal that the radius of gyration in the perpendicular direction to stretching increases monotonically toward its equilibrium value throughout the stress relaxation. These results provide a critical step in improving our understanding of nonlinear rheology of entangled polymers.
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Affiliation(s)
- Wen-Sheng Xu
- Center for Nanophase Materials Sciences and ‡Computational Sciences and Engineering
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jan-Michael Y. Carrillo
- Center for Nanophase Materials Sciences and ‡Computational Sciences and Engineering
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Christopher N. Lam
- Center for Nanophase Materials Sciences and ‡Computational Sciences and Engineering
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Bobby G. Sumpter
- Center for Nanophase Materials Sciences and ‡Computational Sciences and Engineering
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Yangyang Wang
- Center for Nanophase Materials Sciences and ‡Computational Sciences and Engineering
Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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Morthomas J, Fusco C, Zhai Z, Lame O, Perez M. Crystallization of finite-extensible nonlinear elastic Lennard-Jones coarse-grained polymers. Phys Rev E 2017; 96:052502. [PMID: 29347659 DOI: 10.1103/physreve.96.052502] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Indexed: 06/07/2023]
Abstract
The ability of a simple coarse-grained finite-extensible nonlinear elastic (FENE) Lennard-Jones (LJ) polymer model to be crystallized is investigated by molecular dynamics simulations. The optimal FENE Lennard-Jones parameter combinations (ratio between FENE and LJ equilibrium distances) and the optimal lattice parameters are calculated for five different perfect crystallite structures: simple tetragonal, body-centered tetragonal, body-centered orthorhombic, hexagonal primitive, and hexagonal close packed. It was found that the most energetically favorable structure is the body-centered orthorhombic. Starting with an equilibrated polymer liquid and with the optimal parameters found for the body-centered orthorhombic, an isothermal treatment led to the formation of large lamellar crystallites with a typical chain topology: folded, loop, and tie chains, and with a crystallinity of about 60%-70%, similar to real semicrystalline polymers. This simple coarse-grained Lennard-Jones model provides a qualitative tool to study semicrystalline microstructures for polymers.
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Affiliation(s)
- Julien Morthomas
- INSA de Lyon, Université de Lyon, MATEIS, UMR CNRS 5510, 69621 Villeurbanne, France
| | - Claudio Fusco
- INSA de Lyon, Université de Lyon, MATEIS, UMR CNRS 5510, 69621 Villeurbanne, France
| | - Zengqiang Zhai
- INSA de Lyon, Université de Lyon, MATEIS, UMR CNRS 5510, 69621 Villeurbanne, France
| | - Olivier Lame
- INSA de Lyon, Université de Lyon, MATEIS, UMR CNRS 5510, 69621 Villeurbanne, France
| | - Michel Perez
- INSA de Lyon, Université de Lyon, MATEIS, UMR CNRS 5510, 69621 Villeurbanne, France
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Tensile deformation of semi-crystalline polymers by molecular dynamics simulation. IRANIAN POLYMER JOURNAL 2017. [DOI: 10.1007/s13726-017-0577-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Oguz O, Bilge K, Simsek E, Citak MK, Wis AA, Ozkoc G, Menceloglu YZ. High-Performance Green Composites of Poly(lactic acid) and Waste Cellulose Fibers Prepared by High-Shear Thermokinetic Mixing. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02037] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Oguzhan Oguz
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956, Orhanli, Tuzla, Istanbul, Turkey
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
| | - Kaan Bilge
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956, Orhanli, Tuzla, Istanbul, Turkey
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
| | - Eren Simsek
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956, Orhanli, Tuzla, Istanbul, Turkey
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
| | - Mehmet Kerem Citak
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956, Orhanli, Tuzla, Istanbul, Turkey
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
| | | | - Guralp Ozkoc
- Department
of Chemical Engineering, Kocaeli University, 41380, Kocaeli, Turkey
| | - Yusuf Z. Menceloglu
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956, Orhanli, Tuzla, Istanbul, Turkey
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
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Jabbari-Farouji S, Lame O, Perez M, Rottler J, Barrat JL. Role of the Intercrystalline Tie Chains Network in the Mechanical Response of Semicrystalline Polymers. PHYSICAL REVIEW LETTERS 2017; 118:217802. [PMID: 28598647 DOI: 10.1103/physrevlett.118.217802] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Indexed: 06/07/2023]
Abstract
We examine the microscopic origin of the tensile response in semicrystalline polymers by performing large-scale molecular dynamics simulations of various chain lengths. We investigate the microscopic rearrangements of the polymers during tensile deformation and show that the intercrystalline chain connections known as tie chains contribute significantly to the elastic and plastic response. These results suggest that the mechanical behavior of semicrystalline polymers is controlled by two interpenetrated networks of entanglements and tie chains.
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Affiliation(s)
- Sara Jabbari-Farouji
- Institute of Physics, Johannes Gutenberg-University, Staudingerweg 7-9, 55128 Mainz, Germany
| | - Olivier Lame
- Université de Lyon, INSA, MATEIS, UMR CNRS 5510, F69621 Villeurbanne, France
| | - Michel Perez
- Université de Lyon, INSA, MATEIS, UMR CNRS 5510, F69621 Villeurbanne, France
| | - Joerg Rottler
- Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jean-Louis Barrat
- Université Grenoble Alpes, LIPHY, F-38000 Grenoble, France and CNRS, LIPHY, F-38000 Grenoble, France
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Wang W, Li L, Yang C, Soler-Crespo RA, Meng Z, Li M, Zhang X, Keten S, Espinosa HD. Plasticity resulted from phase transformation for monolayer molybdenum disulfide film during nanoindentation simulations. NANOTECHNOLOGY 2017; 28:164005. [PMID: 28273049 DOI: 10.1088/1361-6528/aa656a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Molecular dynamics simulations on nanoindentation of circular monolayer molybdenum disulfide (MoS2) film are carried out to elucidate the deformation and failure mechanisms. Typical force-deflection curves are obtained, and in-plane stiffness of MoS2 is extracted according to a continuum mechanics model. The measured in-plane stiffness of monolayer MoS2 is about 182 ± 14 N m-1, corresponding to an effective Young's modulus of 280 ± 21 GPa. More interestingly, at a critical indentation depth, the loading force decreases sharply and then increases again. The loading-unloading-reloading processes at different initial unloading deflections are also conducted to explain the phenomenon. It is found that prior to the critical depth, the monolayer MoS2 film can return to the original state after completely unloading, while there is hysteresis when unloading after the critical depth and residual deformation exists after indenter fully retracted, indicating plasticity. This residual deformation is found to be caused by the changed lattice structure of the MoS2, i.e. a phase transformation. The critical pressure to induce the phase transformation is then calculated to be 36 ± 2 GPa, consistent with other studies. Finally, the influences of temperature, the diameter and indentation rate of MoS2 monolayer on the mechanical properties are also investigated.
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Affiliation(s)
- Weidong Wang
- School of Mechano-Electronic Engineering, Xidian University, Xi'an 710071, People's Republic of China. Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States of America
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