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Song H, Medvedev GA, Caruthers JM. Structural relaxation of an epoxy resin at temperatures well below
T
g
*. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hosup Song
- Davidson School of Chemical Engineering Purdue University West Lafayette Indiana USA
| | - Grigori A. Medvedev
- Davidson School of Chemical Engineering Purdue University West Lafayette Indiana USA
| | - James M. Caruthers
- Davidson School of Chemical Engineering Purdue University West Lafayette Indiana USA
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2
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Liu G, Wan X, Zhang X, Zhao D, Zhang H. Modeling the Enthalpy Relaxation Kinetics of Glassy Polystyrene Using Different Fictive Temperatures for Different Properties. MACROMOL THEOR SIMUL 2021. [DOI: 10.1002/mats.202100055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guodong Liu
- Hebei Key Laboratory of Functional Polymers School of Chemical Engineering Hebei University of Technology Tianjin 300130 China
| | - Xian Wan
- Hebei Key Laboratory of Functional Polymers School of Chemical Engineering Hebei University of Technology Tianjin 300130 China
| | - Xiaojie Zhang
- Hebei Key Laboratory of Functional Polymers School of Chemical Engineering Hebei University of Technology Tianjin 300130 China
| | - Dongmei Zhao
- Hebei Key Laboratory of Functional Polymers School of Chemical Engineering Hebei University of Technology Tianjin 300130 China
| | - Huiqi Zhang
- Key Laboratory of Functional Polymer Materials (Ministry of Education) College of Chemistry Nankai University Tianjin 300071 China
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Montes-Grajales D, Morelos-Cortes X, Olivero-Verbel J. Discovery of New Protein Targets of BPA Analogs and Derivatives Associated with Noncommunicable Diseases: A Virtual High-Throughput Screening. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:37009. [PMID: 33769846 PMCID: PMC7997610 DOI: 10.1289/ehp7466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
BACKGROUND Bisphenol A analogs and derivatives (BPs) have emerged as new contaminants with little or no information about their toxicity. These have been found in numerous everyday products, from thermal paper receipts to plastic containers, and measured in human samples. OBJECTIVES The objectives of this research were to identify in silico new protein targets of BPs associated with seven noncommunicable diseases (NCDs), and to study their protein-ligand interactions using computer-aided tools. METHODS Fifty BPs were identified by a literature search and submitted to a virtual high-throughput screening (vHTS) with 328 proteins associated with NCDs. Protein-protein interactions between predicted targets were examined using STRING, and the protocol was validated in terms of binding site recognition and correlation between in silico affinities and in vitro data. RESULTS According to the vHTS, several BPs may target proteins associated with NCDs, some of them with stronger affinities than bisphenol A (BPA). The best affinity score (the highest in silico affinity absolute value) was obtained after docking 4,4'-bis(N-carbamoyl-4-methylbenzensulfonamide)diphenylmethane (BTUM) on estradiol 17-beta-dehydrogenase 1 (-13.7 kcal/mol). However, other molecules, such as bisphenol A bis(diphenyl phosphate) (BDP), bisphenol PH (BPPH), and Pergafast 201 also exhibited great affinities (top 10 affinity scores for each disease) with proteins related to NCDs. DISCUSSION Molecules such as BTUM, BDP, BPPH, and Pergafast 201 could be targeting key signaling pathways related to NCDs. These BPs should be prioritized for in vitro and in vivo toxicity testing and to further assess their possible role in the development of these diseases. https://doi.org/10.1289/EHP7466.
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Affiliation(s)
- Diana Montes-Grajales
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, University of Cartagena, Cartagena, Colombia
| | - Xiomara Morelos-Cortes
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, University of Cartagena, Cartagena, Colombia
| | - Jesus Olivero-Verbel
- Environmental and Computational Chemistry Group, School of Pharmaceutical Sciences, University of Cartagena, Cartagena, Colombia
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Sakib N, Koh YP, Huang Y, Mongcopa KIS, Le AN, Benicewicz BC, Krishnamoorti R, Simon SL. Thermal and Rheological Analysis of Polystyrene-Grafted Silica Nanocomposites. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02127] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Nazam Sakib
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Yung P. Koh
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Yucheng Huang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29201, United States
| | - Katrina Irene S. Mongcopa
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Amy N. Le
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Brian C. Benicewicz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29201, United States
| | - Ramanan Krishnamoorti
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Sindee L. Simon
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
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Tanaka Y, Uchino Y, Murayama Y. Physical ageing response of polystyrene subjected to the large deformation: The increase in fictive temperature. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.03.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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McKenna GB, Simon SL. 50th Anniversary Perspective: Challenges in the Dynamics and Kinetics of Glass-Forming Polymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01014] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Gregory B. McKenna
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
| | - Sindee L. Simon
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
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Terzopoulou Z, Kasmi N, Tsanaktsis V, Doulakas N, Bikiaris DN, Achilias DS, Papageorgiou GZ. Synthesis and Characterization of Bio-Based Polyesters: Poly(2-methyl-1,3-propylene-2,5-furanoate), Poly(isosorbide-2,5-furanoate), Poly(1,4-cyclohexanedimethylene-2,5-furanoate). MATERIALS (BASEL, SWITZERLAND) 2017; 10:E801. [PMID: 28773158 PMCID: PMC5551844 DOI: 10.3390/ma10070801] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/10/2017] [Accepted: 07/12/2017] [Indexed: 11/16/2022]
Abstract
In the present study, three new biobased furanoate polyesters with potential use in food packaging applications, named poly(isosorbide furanoate) (PIsF), poly(methyl-propylene furanoate) (PMePF) and poly(1,4-cyclohexane-dimethylene 2,5-furanoate) (PCHDMF) were synthesized. As monomers for the preparation of the polyesters, 2,5-furandicarboxylic acid (FDCA) and diols with irregular or complicated structure were used, including isosorbide (IS), 2-methyl-1,3-propanediol (MPD) and 1,4-cyclohexane-dimethanol (CHDM). The polymerization process was carried out via melt polycondensation method. The structural characteristics and thermal behavior of the polymers were studied. The kinetic fragility of the amorphous phase of the polymers was evaluated. The thermal degradation was studied by means of thermogravimetry and a pyrolysis Py-GC/MS (Pyrolysis-Gas Chromatography/Mass Spectroscopy) system to estimate the degradation mechanism.
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Affiliation(s)
- Zoi Terzopoulou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece.
| | - Nejib Kasmi
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece.
| | - Vasilios Tsanaktsis
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece.
| | - Nikolaos Doulakas
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece.
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece.
| | - Dimitris S Achilias
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece.
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Ramakrishnan V, Harsiny S, Goossens JGP, Hoeks TL, Peters GWM. Physical aging in polycarbonate nanocomposites containing grafted nanosilica particles: A comparison between enthalpy and yield stress evolution. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24125] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Vaidyanath Ramakrishnan
- Department of Mechanical Engineering; Eindhoven University of Technology; P.O. Box 513, 5600 MB Eindhoven The Netherlands
| | - Sepehr Harsiny
- Laboratory of Polymer Materials, Department of Chemical Engineering and Chemistry; Eindhoven University of Technology; P.O. Box 513, 5600 MB Eindhoven The Netherlands
| | - Johannes G. P. Goossens
- Laboratory of Polymer Materials, Department of Chemical Engineering and Chemistry; Eindhoven University of Technology; P.O. Box 513, 5600 MB Eindhoven The Netherlands
| | - Theodorus L. Hoeks
- Laboratory of Polymer Materials, Department of Chemical Engineering and Chemistry; Eindhoven University of Technology; P.O. Box 513, 5600 MB Eindhoven The Netherlands
| | - Gerrit W. M. Peters
- Department of Mechanical Engineering; Eindhoven University of Technology; P.O. Box 513, 5600 MB Eindhoven The Netherlands
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Liu G, Zuo Y, Lin J, Zhao D. Study on enthalpy relaxation of glassy polystyrene using a structure-dependent Kohlrausch stretch exponent combined with coupling model. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2014; 37:20. [PMID: 25052065 DOI: 10.1140/epje/i2014-14063-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 03/24/2014] [Accepted: 06/17/2014] [Indexed: 06/03/2023]
Abstract
In this paper the enthalpy relaxation of polystyrene (PS) was restudied using a structure-dependent Kohlrausch stretch exponent β with incorporation of a coupling model (CM). The structure dependence of β is described in 3 semi-phenomenological equations. The temperature and structure dependence of the relaxation time of the Johari-Goldstein (JG) relaxation (τ JG) is presented using the traditional Tools-Narayanaswamy-Moynihan (TNM) and Adam-Gibbs-Vogel (AGV) equations. The fitting results of heat capacity data are much better than the conventional TNM and Adam-Gibbs (AG) models when the structure dependence of β is described using an exponential equation and τ JG is calculated using the AGV equation, although there are one fewer fitting parameters in the new model. The results indicate that both the structure dependence of β and the CM model may play considerable roles in the investigation on the structure relaxation process in polymers around the glass transition.
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Affiliation(s)
- Guodong Liu
- Institute of Polymer Science and Engineering, Hebei University of Technology, 300130, Tianjin, China,
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Evans CM, Deng H, Jager WF, Torkelson JM. Fragility is a Key Parameter in Determining the Magnitude of Tg-Confinement Effects in Polymer Films. Macromolecules 2013. [DOI: 10.1021/ma401017n] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | | | - Wolter F. Jager
- Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628
BL Delft, The Netherlands
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Morris C, Taylor AJ, Farhat IA, MacNaughtan W. Modelling of physical ageing in starch using the TNM equation. Carbohydr Res 2011; 346:1122-8. [PMID: 21531394 DOI: 10.1016/j.carres.2011.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 02/21/2011] [Accepted: 04/05/2011] [Indexed: 10/18/2022]
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Sulatha MS, Natarajan U. Effect of chemical substituents on the structure of glassy diphenyl polycarbonates. J Phys Chem B 2011; 115:1579-89. [PMID: 21275412 DOI: 10.1021/jp105954z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polycarbonates offer a wide variety of physical property behavior that is difficult to predict due to complexities at the molecular scale. Here, the physical structure of amorphous glassy polycarbonates having aliphatic and cycloaliphatic chemical groups is explored through atomistic simulations. The influence of chemical structure on solubility parameter, torsion distributions, radial distribution function, scattering structure factor, orientation distributions of phenylene rings and carbonate groups, and free volume distributions, leading to interchain packing effects, are shown. The effect of the cyclohexyl ring at the isopropylidene carbon as compared to the effect of the methyl groups positioned on the phenylene rings results in a larger reduction in the solubility parameter (δ). The interchain distance estimated for polycarbonates in this work is in the range of 5-5.8 Å. The o-methyl groups on the phenylene rings, as compared to a cyclohexyl ring, lead to higher interchain distances. The highest interchain distance is observed with a trimethylcyclohexylidene group at the isopropylidene carbon. Atomistic simulations reveal two different types of packing arrangement of nearest-neighbor chains in the glassy state, one type of which agrees with the NMR experimental data. The fundamental insights provided here can be utilized for design of chemical structures for tailored macroscopic properties.
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Affiliation(s)
- M S Sulatha
- Macromolecular Modeling and Simulation Laboratory, Polymer Chemistry Division, National Chemical Laboratory (NCL), Pune 411 008, India
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Papageorgiou GZ, Achilias DS, Karayannidis GP. Isoconversional Glass Transition Kinetics and Fragility Determination of Poly[(ethylene 2,6-naphthalate)-co
-(butylene 2,6-naphthalate)] Random Copolymers. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201000604] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Papageorgiou GZ, Achilias DS, Karayannidis GP. Estimation of thermal transitions in poly(ethylene naphthalate): Experiments and modeling using isoconversional methods. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.04.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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TANAKA Y, UDAGAWA H. Structural Relaxation of a Side-Chain Type Liquid Crystalline Polymer Having Long Spacer Chain: Analysis of Enthalpy Relaxation with an Activation Energy Spectrum. KOBUNSHI RONBUNSHU 2009. [DOI: 10.1295/koron.66.463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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