1
|
Valsecchi M, Galindo A, Jackson G. Modeling Sorption of Hydrocarbons in Polyethylene with the SAFT-γ Mie Approach Combined with a Statistical-Mechanical Model to Describe Semicrystalline Polymers. Macromolecules 2023; 56:9952-9968. [PMID: 38161323 PMCID: PMC10753906 DOI: 10.1021/acs.macromol.3c01336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/26/2023] [Indexed: 01/03/2024]
Abstract
A recently developed statistical-mechanical model is applied systematically to estimate the fraction of tie-molecules (polymer chains linking different crystals directly or via entanglements) in semicrystalline polyethylene (PE) samples. The amorphous domains of the polymer are divided into constrained interlamellar domains and "free" outer-lamellar domains. A set of model parameters is assigned to each sample by correlating previous experimental measurements and minimizing the difference between the predicted solubility of pure hydrocarbons in the sample and the experimental values. We show that the sorption isotherms of multiple pure fluids in each sample can be described by a single parameter set, proving that the polymer-solute interactions (described accurately by the SAFT-γ Mie EoS) are decoupled from the sample-specific properties of the polymer. We find that ∼30% of the crystalline stems in the lamellae of PE are connected to tie-molecules, within the bounds suggested by previous theoretical and computational work. The transferability of the sample-specific parameters is assessed by predicting cosolubility effects and solubility at different temperatures, leading to good agreement with experimental data.
Collapse
Affiliation(s)
- Michele Valsecchi
- Department
of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K.
- Department
of Chemical Engineering, Imperial College
London, South Kensington
Campus, London SW7 2AZ, U.K.
| | - Amparo Galindo
- Department
of Chemical Engineering, Imperial College
London, South Kensington
Campus, London SW7 2AZ, U.K.
| | - George Jackson
- Department
of Chemical Engineering, Imperial College
London, South Kensington
Campus, London SW7 2AZ, U.K.
| |
Collapse
|
2
|
Polymer Waste-Based Highly Efficient Maleated Interfacial Modifier in iPP/SCF Composites—Some Notes on the Role of Processing in Their Thermal and Dynamic Mechanical Properties. Polymers (Basel) 2023; 15:polym15061527. [PMID: 36987307 PMCID: PMC10053728 DOI: 10.3390/polym15061527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 03/22/2023] Open
Abstract
This work has a two-fold objective. First, it attempts to present the excellent efficiency of a maleated interfacial agent (obtained by the authors by using atactic polypropylene industrial waste) when used as interfacial additive in polypropylene/short carbon fiber composites (iPP/SCF). Second, in this paper, we pay attention to the role played by processing in the final properties of the composite. This work has been performed by considering the emerging crystalline morphologies generated by the different shear forces that the molten material suffers depending on the molding method employed. The interfacial agent analyzed here consists of an atactic polypropylene containing succinic anhydride grafts obtained through a chemical modification process performed in solution. It incorporates different types of succinic grafts, such as succinic bridges between aPP chains and backbone and terminal grafts (aPP-SASA) in its structure, and contains 5.6% (5.6 × 10−4 g/mol) of grafted polar groups in total. The adhesion of the polyamide SCF sizing and the succinic units is followed by Field Emission Scanning Electronic Microscopy (FESEM) and Synchrotron Infrared Microscopy (SIRM). However, the main objective of this work is the study of the thermal and the dynamic mechanical behavior of the materials of a series of both compression- and injection-molded samples to ascertain the enhanced interfacial interactions in the material and further comparison between the results obtained by both processing operations. Therefore, we detect improvements of 200% in stiffness and 400% in the viscous response of the same SCF content composites caused by aPP-SASA, depending on the processing method used.
Collapse
|
3
|
Yang T, Ye C, Cuo N, Meng D, Li J. Effect of testing condition and crystalline properties on the mechanical α-relaxation of polyethylene. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04726-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
|
4
|
Li Y, Tao W, Chen W. Evidence for complexation-induced micro-extension of poly(vinyl alcohol) chains in interphase and amorphous domains from solid-state NMR. SOFT MATTER 2022; 18:8974-8982. [PMID: 36382492 DOI: 10.1039/d2sm01136k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The three-phase structure of poly(vinyl alcohol) (PVA)-iodine complexes was elucidated by solid-state NMR (SSNMR), of which the micro-extension of the PVA segment in the interphase and amorphous domains was directly confirmed. The three-phase structure of the PVA-iodine complex was decomposed by the inverse 13C T1-filter, where 13C NMR resonance lines of a C(H) triplet were observed in all three phases. The chain axis of ∼26% extended chains in the interphase deviates 35°-50° relative to the stretching direction, while there is only a 1° deviation for the extended chains in the crystalline domain. The increasing iodine concentration results in the increment of hydrogen-bonded C(H) fractions in both the amorphous and interphase domains, while the distribution of different C(H) fractions remains almost constant in the crystalline domain. Such an increment results from the locally extended PVA chains induced by polyiodine species (I3-/I5-), since the hydrogen bond(s) (HBs) required a specific direction. Direct evidence for this comes from the similar 13C CP/MAS spectra of C(H) in the three phases between unoriented iodine-doped PVA and highly oriented pure PVA. This supports the aggregation model for the formation mechanism of PVA-iodine complexes, where the PVA chain takes an extended zig-zag conformation.
Collapse
Affiliation(s)
- Yahui 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.
| | - Wei Tao
- 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.
| |
Collapse
|
5
|
Valsecchi M, Ramadani J, Williams D, Galindo A, Jackson G. Influence of Tie-Molecules and Microstructure on the Fluid Solubility in Semicrystalline Polymers. J Phys Chem B 2022; 126:9059-9088. [DOI: 10.1021/acs.jpcb.2c04600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michele Valsecchi
- Department of Materials, Imperial College London, South Kensington Campus, LondonSW7 2AZ, U.K
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, LondonSW7 2AZ, U.K
| | - Jona Ramadani
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, LondonSW7 2AZ, U.K
| | - Daryl Williams
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, LondonSW7 2AZ, U.K
| | - Amparo Galindo
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, LondonSW7 2AZ, U.K
| | - George Jackson
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, LondonSW7 2AZ, U.K
| |
Collapse
|
6
|
Zhou D, Yang G, Tian Y, Kang J, Wang S. Different effects of radio frequency and heat block treatments on multi-scale structure and pasting properties of maize, potato, and pea starches. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
7
|
Rigid amorphous fraction and crystallinity in cold-crystallized syndiotactic polystyrene: Characterization by differential scanning calorimetry. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Qin Y, Qiao Y, Chassé W, Litvinov V, Men Y. Crystallinity of polyolefins with large side groups by low-field 1H NMR T 2 relaxometry: Isotactic Polybutene-1 with form II and I crystals. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2020; 105:101637. [PMID: 31830666 DOI: 10.1016/j.ssnmr.2019.101637] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/08/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
Phase composition and molecular mobility were studied using 1H NMR T2 relaxometry in isotactic polybutene-1 (iPB-1) with two polymorphs - form I and II crystals. Several types of NMR relaxation methods and data analysis were evaluated for determining the most reliable way for studying physical phases in iPB-1. Three-phase model provided the most appropriate description of the phase composition in iPB-1, i.e., a crystal-amorphous interface separates the crystalline and the amorphous phases. Due to complex molecular mobility in iPB-1, the amount of rigid fraction should be considered as NMR crystallinity number. Two types of chain segments are present in the amorphous phase: (1) chain segments with anisotropic mobility due to chain anchoring to crystals and chain entanglements; and (2) highly mobile chain end segments. The polymorphic phase II to I transition causes significant immobilization of polymer chains in the crystalline and the amorphous phases. Molecular weight of iPB-1 largely influences phase composition and molecular mobility in crystalline and amorphous phases.
Collapse
Affiliation(s)
- Yanan Qin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, 130022, Changchun, PR China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
| | - Yongna Qiao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, 130022, Changchun, PR China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, PR China
| | - Walter Chassé
- Westfälische Wilhelms-Universität, Institut für Physikalische Chemie, Corrensstraße 28/30, 48149, Münster, Germany
| | - Victor Litvinov
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, 130022, Changchun, PR China; V.Lit.Consult, Gozewijnstraat 4, 6191, WV Beek, the Netherlands.
| | - Yongfeng Men
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, 130022, Changchun, PR China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, PR China.
| |
Collapse
|
9
|
Majewski K, Mantell S, Bhattacharya M. Relationship between morphological changes and mechanical properties in HDPE films exposed to a chlorinated environment. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2019.109027] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
10
|
Predicting trends in structural and physical properties of a model polymer with embedded natural fibers: Viability of molecular dynamics studies for a bottom up design. J Appl Polym Sci 2019. [DOI: 10.1002/app.48189] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
11
|
Zhang H, Zhao S, Xin Z, Ye C, Li Z, Xia J. Wear Resistance Mechanism of Ultrahigh-Molecular-Weight Polyethylene Determined from Its Structure–Property Relationships. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04721] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Huan Zhang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Shicheng Zhao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Zhong Xin
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Department of Product Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, People’s Republic of China
| | - Chunlin Ye
- State Key Laboratory of Polyolefins and Catalysis, Shanghai Key Laboratory of Catalysis Technology for Polyolefins (Shanghai Research Institute of Chemical Industry), Yunlin Road (East) 345, Shanghai 200062, People’s Republic of China
| | - Zhi Li
- State Key Laboratory of Polyolefins and Catalysis, Shanghai Key Laboratory of Catalysis Technology for Polyolefins (Shanghai Research Institute of Chemical Industry), Yunlin Road (East) 345, Shanghai 200062, People’s Republic of China
| | - Jincheng Xia
- State Key Laboratory of Polyolefins and Catalysis, Shanghai Key Laboratory of Catalysis Technology for Polyolefins (Shanghai Research Institute of Chemical Industry), Yunlin Road (East) 345, Shanghai 200062, People’s Republic of China
| |
Collapse
|
12
|
Adhikari S, Muthukumar M. Theory of statistics of ties, loops, and tails in semicrystalline polymers. J Chem Phys 2019; 151:114905. [PMID: 31542015 DOI: 10.1063/1.5113595] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Polymer crystals grown from melts consist of alternating lamellar crystalline regions and amorphous regions. We study the statistics of ties: chains which bridge the adjacent lamellae, loops: chains which come out of one lamella and enter back into the same lamella before reaching the other lamellae, and tails: chains which end in an amorphous region. We develop a theory to calculate the probabilities of formation of ties, loops, and tails with consideration of finite chain length and cooperative incorporation of a chain into multiple lamellae. The results of our numerical calculations based on a field-theoretic formalism show that the fraction of ties increases with increasing chain length, and it decreases with increasing interlamellar separation. In the limiting case of an infinite chain confined between only two walls, we recover the classical results of the gambler's ruin model. We show that the density anomaly encountered in previous theories is avoided naturally in the present theory without forcing the majority of stems to form tight loops. The derived results on the probability of tie chains in the amorphous regions are pertinent to the mechanical properties of semicrystalline polymers.
Collapse
Affiliation(s)
- Sabin Adhikari
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Murugappan Muthukumar
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
| |
Collapse
|
13
|
Bartczak Z, Vozniak A. WAXS/SAXS study of plastic deformation instabilities and lamellae fragmentation in polyethylene. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
14
|
Liu F, Sun T, Tang P, Zhang H, Qiu F. Understanding chain folding morphology of semicrystalline polymers based on a rod-coil multiblock model. SOFT MATTER 2017; 13:8250-8263. [PMID: 29071322 DOI: 10.1039/c7sm01892d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We employ a rod-coil multiblock molecular chain model to investigate chain folding behavior, which is a significant characteristic in semicrystalline polymers, by using the method of self-consistent field theory (SCFT). Polymer chains with different conformations in crystalline and amorphous regions are described by rigid rod chains and flexible Gaussian chains, respectively. At present, we concentrate on the thermodynamic behaviors of polymer semi-crystals after the formation of the initial lamellar crystals. A new mechanism for lamellar thickening is proposed to realize that the end of lamellar thickening depends on the crystallinity degree. In other words, it is impossible for lamellae to develop into extended-chain crystals by means of lamellar thickening if crystallinity is limited to a certain degree. We further discuss the competition between crystalline and amorphous regions and its influence on crystallization behaviors, such as the formation of double lamellae, chain tilt, the anomalies and adjacent re-entry. The synergistic influences of the driving force of crystallization, interfacial energy and crystallinity degree on chain folding behavior are also investigated when the density anomalies in amorphous regions are excluded. Our model demonstrates advantages in accurately describing the mesoscopic layered structures of semicrystalline polymers based upon a microscopic chain model and provides at least a semi-quantitative thermodynamic picture for chain folding.
Collapse
Affiliation(s)
- Faqiang Liu
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
| | | | | | | | | |
Collapse
|
15
|
Zhang R, Xiao T, Graf R, De-Boer E, Verhoef R, Kentgens A, Yang G, Rastogi S, Yao YF. Chain packing in the noncrystalline region of deuterated UHMWPE: A solid-state 2H and 13C NMR study. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
16
|
García-Martínez JM, Taranco J, Collar EP. A DMA study of the interfacial changes on injection-molded iPP/mica composites modified by a p
-phenylen- bis
-maleamic acid grafted atactic polypropylene. J Appl Polym Sci 2017. [DOI: 10.1002/app.45366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jesús-María García-Martínez
- Grupo de Ingeniería de Polímeros; Instituto de Ciencia y Tecnología de Polímeros. (ICTP/CSIC); C/Juan de la Cierva 3 Madrid 28006 Spain
| | - Jesús Taranco
- Grupo de Ingeniería de Polímeros; Instituto de Ciencia y Tecnología de Polímeros. (ICTP/CSIC); C/Juan de la Cierva 3 Madrid 28006 Spain
| | - Emilia P. Collar
- Grupo de Ingeniería de Polímeros; Instituto de Ciencia y Tecnología de Polímeros. (ICTP/CSIC); C/Juan de la Cierva 3 Madrid 28006 Spain
| |
Collapse
|
17
|
Brayton AL, Yeh IC, Andzelm JW, Rutledge GC. Vibrational Analysis of Semicrystalline Polyethylene Using Molecular Dynamics Simulation. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00995] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander L. Brayton
- Department of Chemical
Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - In-Chul Yeh
- U.S. Army
Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
| | - Jan W. Andzelm
- U.S. Army
Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
| | - Gregory C. Rutledge
- Department of Chemical
Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
18
|
Moyassari A, Unge M, Hedenqvist MS, Gedde UW, Nilsson F. First-principle simulations of electronic structure in semicrystalline polyethylene. J Chem Phys 2017; 146:204901. [PMID: 28571365 PMCID: PMC5440234 DOI: 10.1063/1.4983650] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 05/04/2017] [Indexed: 12/02/2022] Open
Abstract
In order to increase our fundamental knowledge about high-voltage cable insulation materials, realistic polyethylene (PE) structures, generated with a novel molecular modeling strategy, have been analyzed using first principle electronic structure simulations. The PE structures were constructed by first generating atomistic PE configurations with an off-lattice Monte Carlo method and then equilibrating the structures at the desired temperature and pressure using molecular dynamics simulations. Semicrystalline, fully crystalline and fully amorphous PE, in some cases including crosslinks and short-chain branches, were analyzed. The modeled PE had a structure in agreement with established experimental data. Linear-scaling density functional theory (LS-DFT) was used to examine the electronic structure (e.g., spatial distribution of molecular orbitals, bandgaps and mobility edges) on all the materials, whereas conventional DFT was used to validate the LS-DFT results on small systems. When hybrid functionals were used, the simulated bandgaps were close to the experimental values. The localization of valence and conduction band states was demonstrated. The localized states in the conduction band were primarily found in the free volume (result of gauche conformations) present in the amorphous regions. For branched and crosslinked structures, the localized electronic states closest to the valence band edge were positioned at branches and crosslinks, respectively. At 0 K, the activation energy for transport was lower for holes than for electrons. However, at room temperature, the effective activation energy was very low (∼0.1 eV) for both holes and electrons, which indicates that the mobility will be relatively high even below the mobility edges and suggests that charge carriers can be hot carriers above the mobility edges in the presence of a high electrical field.
Collapse
Affiliation(s)
- A Moyassari
- School of Chemical Science and Engineering, Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - M Unge
- School of Chemical Science and Engineering, Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - M S Hedenqvist
- School of Chemical Science and Engineering, Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - U W Gedde
- School of Chemical Science and Engineering, Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - F Nilsson
- School of Chemical Science and Engineering, Fibre and Polymer Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| |
Collapse
|
19
|
García-Martínez JM, Areso S, Collar EP. Preliminary dynamic-mechanical analysis of polypropylene/short carbon fibers composites modified by a succinic anhydride-grafted atactic polypropylene. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24620] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jesús María García-Martínez
- Grupo de Ingeniería de Polímeros. GIP; Instituto de Ciencia y Tecnología de Polímeros, ICTP/CSIC; Calle Juan de la Cierva 3 28006 Madrid Spain
| | - Susana Areso
- Grupo de Ingeniería de Polímeros. GIP; Instituto de Ciencia y Tecnología de Polímeros, ICTP/CSIC; Calle Juan de la Cierva 3 28006 Madrid Spain
| | - Emilia P. Collar
- Grupo de Ingeniería de Polímeros. GIP; Instituto de Ciencia y Tecnología de Polímeros, ICTP/CSIC; Calle Juan de la Cierva 3 28006 Madrid Spain
| |
Collapse
|
20
|
Romano D, Tops N, Bos J, Rastogi S. Correlation between Thermal and Mechanical Response of Nascent Semicrystalline UHMWPEs. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02339] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dario Romano
- Department
of Materials, Loughborough University, Ashby Road, Loughborough LE11 3TU, U.K
- Department
of Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167RD Geleen, The Netherlands
| | - Niek Tops
- Research Institute,
Teijin Aramid, Velperweg 76, 6824BM Arnhem, The Netherlands
| | - Johan Bos
- Research Institute,
Teijin Aramid, Velperweg 76, 6824BM Arnhem, The Netherlands
| | - Sanjay Rastogi
- Department
of Materials, Loughborough University, Ashby Road, Loughborough LE11 3TU, U.K
- Department
of Biobased Materials, Faculty of Humanities and Sciences, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167RD Geleen, The Netherlands
- Research Institute,
Teijin Aramid, Velperweg 76, 6824BM Arnhem, The Netherlands
| |
Collapse
|
21
|
Fritzsching KJ, Mao K, Schmidt-Rohr K. Avoidance of Density Anomalies as a Structural Principle for Semicrystalline Polymers: The Importance of Chain Ends and Chain Tilt. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02000] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keith J. Fritzsching
- Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02453, United States
| | - Kanmi Mao
- ExxonMobil Research and Engineering, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Klaus Schmidt-Rohr
- Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02453, United States
| |
Collapse
|
22
|
Moyassari A, Mostafavi H, Gkourmpis T, Hedenqvist M, Gedde U, Nilsson F. Simulation of semi-crystalline polyethylene: Effect of short-chain branching on tie chains and trapped entanglements. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.07.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
23
|
Uneyama T, Miyata T, Nitta KH. Self-consistent field model simulations for statistics of amorphous polymer chains in crystalline lamellar structures. J Chem Phys 2014; 141:164906. [PMID: 25362340 DOI: 10.1063/1.4899047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We calculate statistical properties of amorphous polymer chains between crystalline lamellae by self-consistent field model simulations. In our model, an amorphous subchain is modelled as a polymer chain of which ends are grafted onto the crystal-amorphous interfaces. The crystal-amorphous interfaces are expressed as impenetrable surfaces. We incorporate the interaction between segments to satisfy the incompressible condition for the segment density field. The simulation results show that amorphous polymer chains feel thin potential layers, which are mainly repulsive, near the crystal-amorphous interfaces. The impenetrable and incompressible conditions affect the statistics of polymer chains and the chain statistics becomes qualitatively different from the ideal Gaussian chain statistics without any constraints. We show the effects of the system size and the graft density to statistical quantities. We also show that the tie subchain statistics obey rather simple statistics.
Collapse
Affiliation(s)
- Takashi Uneyama
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Takafumi Miyata
- Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
| | - Koh-hei Nitta
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| |
Collapse
|
24
|
Kim JM, Locker R, Rutledge GC. Plastic Deformation of Semicrystalline Polyethylene under Extension, Compression, and Shear Using Molecular Dynamics Simulation. Macromolecules 2014. [DOI: 10.1021/ma402297a] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Mo Kim
- Department
of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Rebecca Locker
- ExxonMobil
Research
and Engineering Company, 1545 Route
22 East, Annandale, New Jersey 08801, United States
| | - Gregory C. Rutledge
- Department
of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
25
|
Money BK, Swenson J. Dynamics of Poly(ethylene oxide) around Its Melting Temperature. Macromolecules 2013. [DOI: 10.1021/ma4003598] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Benson K. Money
- Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteberg, Sweden
| | - Jan Swenson
- Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteberg, Sweden
| |
Collapse
|
26
|
Lin X, Caton-Rose F, Ren D, Wang K, Coates P. Shear-induced crystallization morphology and mechanical property of high density polyethylene in micro-injection molding. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0122-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
27
|
Fan D, Wang L, Ma S, Ma W, Liu X, Huang J, Zhao J, Zhang H, Chen W. Structural variation of rice starch in response to temperature during microwave heating before gelatinisation. Carbohydr Polym 2013; 92:1249-55. [DOI: 10.1016/j.carbpol.2012.10.053] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 10/18/2012] [Accepted: 10/22/2012] [Indexed: 11/30/2022]
|
28
|
Paul J, Hansen EW, Roots J. Probing the molecular dynamics in XLPE aged at different temperatures by 1H NMR relaxation time measurements. Polym Degrad Stab 2012. [DOI: 10.1016/j.polymdegradstab.2012.07.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
29
|
Nilsson F, Lan X, Gkourmpis T, Hedenqvist M, Gedde U. Modelling tie chains and trapped entanglements in polyethylene. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.045] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
30
|
|
31
|
Xu P, Zhang X. Gamma irradiation effect on chain segment motion and charge detrapping in polyamide 610. Radiat Phys Chem Oxf Engl 1993 2011. [DOI: 10.1016/j.radphyschem.2011.03.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
32
|
Lee S, Rutledge GC. Plastic Deformation of Semicrystalline Polyethylene by Molecular Simulation. Macromolecules 2011. [DOI: 10.1021/ma1026115] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sanghun Lee
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Gregory C. Rutledge
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
33
|
Balijepalli S, Rutledge GC. Simulation study of semi-crystalline polymer interphases. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19981330108] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
34
|
Kochervinskij VV, Malyshkina IA, Bessonova NP, Suljanov SN, Dembo KA. Effect of recrystallization on the molecular mobility of a copolymer of vinylidene fluoride and hexafluoropropylene. J Appl Polym Sci 2010. [DOI: 10.1002/app.32993] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
35
|
Li W, Adams A, Wang J, Blümich B, Yang Y. Polyethylene/palygorskite nanocomposites: Preparation by in situ polymerization and their characterization. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.08.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
36
|
YU X, CHEN E, ZHU C, HE S, LIU W. STUDY OF LAMELLAR MORPHOLOGY OF POLY(ε-CAPROLACTONE) BASED ON SAXS/WAXS SIMULTANEOUS MEASUREMENT AND ONE-DIMENSIONAL CORRELATION FUNCTION ANALYSIS. ACTA POLYM SIN 2010. [DOI: 10.3724/sp.j.1105.2010.10048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
37
|
Yao Y, Graf R, Spiess H, Rastogi S. Influence of Crystal Thickness and Topological Constraints on Chain Diffusion in Linear Polyethylene. Macromol Rapid Commun 2009; 30:1123-7. [DOI: 10.1002/marc.200900114] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 03/20/2009] [Accepted: 03/30/2009] [Indexed: 11/08/2022]
|
38
|
Matsuo M, Luo Y, Galeski A. Gauche-trans transitions in amorphous polymers under annealing: lattice model and polarized light scattering. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2009; 79:041801. [PMID: 19518248 DOI: 10.1103/physreve.79.041801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2008] [Indexed: 05/27/2023]
Abstract
The driving force of density fluctuation of amorphous polymer films under annealing processes was evaluated synthetically in terms of thermodynamics on the basis of the logarithmic light intensity as a function of annealing time. The time dependence of ln(I) of polyethylene (terephthalate) (PET) as an example for characterizing an amorphous state was classified into three stages: the first stage (stage I), where ln(I) showed insignificant changes with time; the second stage (stage II), where ln(I) increased linearly; and the third stage (stage III), where the intensity deviated from the linear relationship and tended to level off. The density fluctuation by chain diffusion, termed quasi-spinodal decomposition, in stage II was analyzed in terms of an increase of trans-conformation of an amorphous chain in stage I. To provide conclusive evidence, the orientation function of chain segments was calculated by using a lattice model that accounts for entropic and energetic characters. The former character is associated with segmental orientation due to the effect of chain stiffness of Kuhn segments characterized by a rod with a relatively large length-to-width ratio x , whereas the latter is associated with thermotropic systems with anisotropic polarizabilities. By using the theoretical orientation function, Hv light scattering patterns were calculated by a statistical approach in which the optical axis of a PET chain segment was chosen along the direction perpendicular to the benzene ring. This selection was justified by comparison of the three principal refractive indexes of a PET chain. The calculated patterns provided a clear X-type lobe, when the correlation between optical elements concerning the rotational fluctuation became stronger. The calculated patterns were in good agreement with the patterns observed in stage III. The series of experimental and theoretical results indicated that the conversion from gauche- to trans-conformation plays an important role to derive the density fluctuation of amorphous polymer chains associated with the initiation of crystallization.
Collapse
Affiliation(s)
- Masaru Matsuo
- Department of Apparel and Clothing Science, Faculty of Human Life and Environment, Nara Women's University, Nara 630-8506, Japan.
| | | | | |
Collapse
|
39
|
Kochervinskii VV, Kozlova NV, Khnykov AY, Shcherbina MA, Sulyanov SN, Dembo KA. Features of structure formation and electrophysical properties of poly(vinylidene fluoride) crystalline ferroelectric polymers. J Appl Polym Sci 2009. [DOI: 10.1002/app.31044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
40
|
|
41
|
|
42
|
Yao YF, Graf R, Spiess HW, Rastogi S. Restricted Segmental Mobility Can Facilitate Medium-Range Chain Diffusion: A NMR Study of Morphological Influence on Chain Dynamics of Polyethylene. Macromolecules 2008. [DOI: 10.1021/ma702815k] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Y.-F. Yao
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany, and Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands
| | - R. Graf
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany, and Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands
| | - H. W. Spiess
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany, and Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands
| | - S. Rastogi
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany, and Department of Chemical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands
| |
Collapse
|
43
|
Beloshenko VA, Askadskii AA, Varyukhin VN. Promising aspects of the structural modification of polymers and polymer composites with the aid of high pressures. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1998v067n11abeh000417] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
44
|
Kuppa VK, in 't Veld PJ, Rutledge GC. Monte Carlo Simulation of Interlamellar Isotactic Polypropylene. Macromolecules 2007. [DOI: 10.1021/ma0703958] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vikram K. Kuppa
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Pieter J. in 't Veld
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Gregory C. Rutledge
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| |
Collapse
|
45
|
Yan XW, Wang JD, Ren XH, Yang YR, Jiang BB, Voda MA, Bertmer M, Stapf S. Phase Structures of Nascent Polyethylene Powder Studied by Wideline Proton NMR. CHINESE J CHEM 2007. [DOI: 10.1002/cjoc.200790158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
46
|
|
47
|
Rutledge GC. IMPLICATIONS OF METASTABILITY FOR THE CRYSTAL/AMORPHOUS INTERFACE FROM MOLECULAR SIMULATION. J MACROMOL SCI B 2007. [DOI: 10.1081/mb-120013073] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Gregory C. Rutledge
- a Department of Chemical Engineering , Massachusetts Institute of Technology , Cambridge, MA, 02139, U.S.A
| |
Collapse
|
48
|
Kochervinskii VV. Mechanism of polarization and piezoelectric behavior in crystallizable ferroelectric polymers from the standpoint of propagation of soliton waves. POLYMER SCIENCE SERIES C 2006. [DOI: 10.1134/s1811238206010036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
49
|
Vacatello M. Phantom Chain Simulations of Realistically Sized Polymer-Based Nanocomposites. MACROMOL THEOR SIMUL 2006. [DOI: 10.1002/mats.200500068] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
50
|
Meaurio E, Zuza E, López-Rodríguez N, Sarasua JR. Conformational Behavior of Poly(l-lactide) Studied by Infrared Spectroscopy. J Phys Chem B 2006; 110:5790-800. [PMID: 16539526 DOI: 10.1021/jp055203u] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper reports the analysis of the C=O stretching region of poly(L-lactide). This spectral band splits into up to four components, a phenomenon that a priori can be explained in terms of carbonyl-carbonyl coupling or specific interactions (such as C-H...O hydrogen bonding or dipole-dipole). Hydrogen bonding can be discarded from the analysis of the C-H stretching spectral region. In addition, low molecular weight dicarbonyl compounds of chemical structure similar to that of PLLA, such as diacyl peroxides, show a remarkable splitting of the carbonyl band attributed to intramolecular carbonyl-carbonyl coupling. Several mechanisms can be responsible for this behavior, such as mechanical coupling, electronic effects, or through-space intramolecular TDC (transition dipole coupling) interactions. Intermolecular dipole-dipole interactions (possible in the form of interchain TDC interactions) are proven to be of minor relevance taking into account the spatial structure of the PLLA conformers. The Simply Coupled Oscilator (SCO) model, which only accounts for mechanical coupling, has been found to predict adequately the relative intensity of the symmetric and asymmetric bands of dicarbonyl compounds. The dispersion curves predicted for PLLA by the SCO model also match those given by more general treatments, such as Miyazawa's first-order perturbation theory. Hence, the SCO model is adopted here as an adequate yet simple tool for the interpretation of band splitting caused by intramolecular coupling of polylactide. The four components observed in the C=O stretching band of semicrystalline PLLA are attributed to the four possible conformers: gt, gg, tt, and tg. The narrow bands observed for the interlamellar material are attributed to highly ordered chains, indicating the absence of a truly amorphous phase in the crystalline polymer. The interphase seems to extend over the whole interlamellar region, showing the features of a semiordered metastable phase. In amorphous PLLA, bands corresponding to gt, gg, and tt conformers also can be resolved by second derivative techniques, and curve-fitting results provide information about the conformational population at different temperatures.
Collapse
Affiliation(s)
- E Meaurio
- The School of Engineering, The University of Basque Country (EHU-UPV), Alameda de Urquijo s/n. 48013 Bilbao, Spain
| | | | | | | |
Collapse
|