1
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Ming Y, Zhou Z, Hao T. Molecular simulation of crystal nucleation and growth of structurally restricted polymer nanocomposites. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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2
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Gohn AM, Zhang X, McHale A, Androsch R, Rhoades AM. Competition Between Heterogeneous Nucleation and Flow-Induced Crystallization of Polyamide 66 and its Carbon Nanotube Composites. Macromol Rapid Commun 2022; 43:e2200418. [PMID: 36029147 DOI: 10.1002/marc.202200418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/12/2022] [Indexed: 11/05/2022]
Abstract
Both heterogeneous nucleation and flow-induced entropy reduction are the two well-known factors that accelerate polymer crystallization. However, the interplay of nucleation and flow-induced acceleration is still poorly understood. This work investigates the nucleating effect of carbon nanotubes (CNT) on both the quiescent and flow-induced crystallization kinetics of polyamide 66 (PA 66). The quiescent crystallization study indicates that CNT acts as a powerful nucleant, as suggested by the fact that the critical cooling rate to bypass crystallization and create the amorphous glassy state changes from 1,000 K/s in PA 66 neat resin to a rate faster than 4,000 K/s in the PA 66 nanocomposites. The flow-induced crystallization study indicates PA 66 onset crystallization time and morphology depend on the shear work introduced by rotational rheometry. A combined acceleration effect from CNT nucleants and flow-induced crystallization (FIC) persists when the CNT loading is under the saturation limit. However, if CNT loading meets the saturation limit, specific shear work shows no impact on the crystallization time, providing evidence that the role of the FIC acceleration effect no longer exists when nucleant acceleration dominates the crystallization of PA 66. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Anne M Gohn
- School of Engineering, Penn State Erie, 4701 College Drive, Erie, PA 16563, United States.,Interdisciplinary Center for Transfer-oriented Research in Natural Sciences, Martin Luther University Halle-Wittenberg, 06099, Halle/Saale, Germany
| | - Xiaoshi Zhang
- School of Engineering, Penn State Erie, 4701 College Drive, Erie, PA 16563, United States
| | - Alexander McHale
- School of Engineering, Penn State Erie, 4701 College Drive, Erie, PA 16563, United States
| | - René Androsch
- Interdisciplinary Center for Transfer-oriented Research in Natural Sciences, Martin Luther University Halle-Wittenberg, 06099, Halle/Saale, Germany
| | - Alicyn M Rhoades
- School of Engineering, Penn State Erie, 4701 College Drive, Erie, PA 16563, United States
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3
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Morphological Transformation in Polymer Composite Materials Filled with Carbon Nanoparticles: Part 2—Thermal and Mechanical Properties. MATERIALS 2022; 15:ma15155094. [PMID: 35897525 PMCID: PMC9331755 DOI: 10.3390/ma15155094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 02/01/2023]
Abstract
HDPE-based composite fibers filled by original and annealed carbon nanodiscs (oND and aND, respectively) were prepared by melt extrusion technology with high-temperature orientational drawing up to draw ratio DR = 8. The thermal properties of the obtained fibers were investigated by DSC and TGA methods. It was shown that the nanofillers can be influenced by high temperatures, at which the molecular mobility in the interlamellar regions became active, while the melting point and the crystallinity degree of the samples were not affected. Short- and long-term mechanical properties of the nanocomposite fibers were studied as well. Very rare mechanical testing of the knotted fibers was carried out and, as a result, a decrease of the knot strength up to 35% was detected. It was also revealed that the carbon nanodiscs do not reinforce the composite fibers and play a negative role in the creep processes, while the Young’s modulus can be improved by 2 times for the oriented samples.
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4
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Abuoudah CK, Abuibaid AZ, Greish YE, Ehmann HMA, Abu-Jdayil B, Iqbal MZ. Thermally reduced graphene/polypropylene nanocomposites: Effects of processing method on thermal, mechanical, and morphological properties. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03100-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Altorbaq AS, Krauskopf AA, Wen X, Pérez-Camargo RA, Su Y, Wang D, Müller AJ, Kumar SK. Crystallization Kinetics and Nanoparticle Ordering in Semicrystalline Polymer Nanocomposites. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101527] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Chazot CAC, Damirchi B, Lee B, van Duin ACT, Hart AJ. Molecular Alignment of a Meta-Aramid on Carbon Nanotubes by In Situ Interfacial Polymerization. NANO LETTERS 2022; 22:998-1006. [PMID: 35080898 DOI: 10.1021/acs.nanolett.1c03866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Molecularly organized nanocomposites of polymers and carbon nanotubes (CNTs) have great promise as high-performance materials; in particular, conformal deposition of polymers can control interfacial properties for mechanical load transfer, electrical or thermal transport, or electro/chemical transduction. However, controllability of polymer-CNT interaction remains a challenge with common processing methods that combine CNTs and polymers in melt or in solution, often leading to nonuniform polymer distribution and CNT aggregation. Here, we demonstrate CNTs within net-shape sheets can be controllably coated with a conformal coating of meta-aramid by simultaneous capillary infiltration and interfacial polymerization. We determine that π-interaction between the polymer and CNTs results in chain alignment parallel to the CNT outer wall. Subsequent nucleation and growth of the precipitated aramid forms a smooth continuous layered sheath around the CNTs. These findings motivate future investigation of mechanical properties of the resulting composites, and adaptation of the in situ polymerization method to other substrates.
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Affiliation(s)
| | - Behzad Damirchi
- Department of Mechanical Engineering, Pennsylvania State University, 245 Research East, University Park, Pennsylvania 16802, United States
| | - Byeongdu Lee
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Adri C T van Duin
- Department of Mechanical Engineering, Pennsylvania State University, 245 Research East, University Park, Pennsylvania 16802, United States
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7
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Nair ASR, Devi S, Mandal S, Tripathi UK, Roy D, Prasad NE. Insights into enzymatic degradation of physically crosslinked hydrogels anchored by functionalized carbon nanofillers. NEW J CHEM 2022. [DOI: 10.1039/d1nj04924k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Immobilization of hydrophobic enzymes on the surface of nanofillers disturbs the non-covalent interactions of polymer–filler networks and destabilizes physically crosslinked hydrogels.
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Affiliation(s)
- Adwaita SR Nair
- Directorate of Nanomaterials, DMSRDE, Kanpur, 208013, India
- Nanoscience & Technology, Central University of Jharkhand, 835222, India
| | - Sudeepa Devi
- Directorate of Nanomaterials, DMSRDE, Kanpur, 208013, India
- Janta Maha Vidyalaya (CSJM University), Ajitmal, Auraiya, 206121, India
| | - Subhash Mandal
- Directorate of Nanomaterials, DMSRDE, Kanpur, 208013, India
| | | | - Debmalya Roy
- Directorate of Nanomaterials, DMSRDE, Kanpur, 208013, India
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8
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Qi XD, Yang JH, Zhang N, Huang T, Zhou ZW, Kühnert I, Pötschke P, Wang Y. Selective localization of carbon nanotubes and its effect on the structure and properties of polymer blends. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101471] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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9
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Liu R, Nie Y, Ming Y, Hao T, Zhou Z. Simulations on polymer nanocomposite crystallization. POLYMER CRYSTALLIZATION 2021. [DOI: 10.1002/pcr2.10214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Rongjuan Liu
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Yijing Nie
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Yongqiang Ming
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Tongfan Hao
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Zhiping Zhou
- Research School of Polymeric Materials, School of Materials Science and Engineering Jiangsu University Zhenjiang China
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10
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Leveille M, Shen X, Fu W, Jin K, Acerce M, Wang C, Bustamante J, Casas AM, Feng Y, Ge N, Hirst LS, Ghosh S, Lu JQ. Directional, Low-Energy Driven Thermal Actuating Bilayer Enabled by Coordinated Submolecular Switching. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102077. [PMID: 34687166 PMCID: PMC8655216 DOI: 10.1002/advs.202102077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/29/2021] [Indexed: 05/29/2023]
Abstract
The authors reveal a thermal actuating bilayer that undergoes reversible deformation in response to low-energy thermal stimuli, for example, a few degrees of temperature increase. It is made of an aligned carbon nanotube (CNT) sheet covalently connected to a polymer layer in which dibenzocycloocta-1,5-diene (DBCOD) actuating units are oriented parallel to CNTs. Upon exposure to low-energy thermal stimulation, coordinated submolecular-level conformational changes of DBCODs result in macroscopic thermal contraction. This unique thermal contraction offers distinct advantages. It's inherently fast, repeatable, low-energy driven, and medium independent. The covalent interface and reversible nature of the conformational change bestow this bilayer with excellent repeatability, up to at least 70 000 cycles. Unlike conventional CNT bilayer systems, this system can achieve high precision actuation readily and can be scaled down to nanoscale. A new platform made of poly(vinylidene fluoride) (PVDF) in tandem with the bilayer can harvest low-grade thermal energy and convert it into electricity. The platform produces 86 times greater energy than PVDF alone upon exposure to 6 °C thermal fluctuations above room temperature. This platform provides a pathway to low-grade thermal energy harvesting. It also enables low-energy driven thermal artificial robotics, ultrasensitive thermal sensors, and remote controlled near infrared (NIR) driven actuators.
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Affiliation(s)
| | - Xinyuan Shen
- Materials Science and EngineeringUniversity of California, MercedMerced95343USA
- Macromolecular ScienceFudan UniversityShanghai200433P. R. China
| | - Wenxin Fu
- Materials Science and EngineeringUniversity of California, MercedMerced95343USA
| | - Ke Jin
- Macromolecular ScienceFudan UniversityShanghai200433P. R. China
| | - Muharrem Acerce
- Materials Science and EngineeringUniversity of California, MercedMerced95343USA
| | - Changchun Wang
- Macromolecular ScienceFudan UniversityShanghai200433P. R. China
| | | | | | - Yuan Feng
- ChemistryUniversity of California, IrvineIrvine92697USA
| | - Nien‐Hui Ge
- ChemistryUniversity of California, IrvineIrvine92697USA
| | | | | | - Jennifer Qing Lu
- PhysicsUniversity of California, MercedMerced95343USA
- Materials Science and EngineeringUniversity of California, MercedMerced95343USA
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11
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Depan D, Chirdon W, Khattab A. Morphological and Chemical Analysis of Low-Density Polyethylene Crystallized on Carbon and Clay Nanofillers. Polymers (Basel) 2021; 13:polym13101558. [PMID: 34067958 PMCID: PMC8152291 DOI: 10.3390/polym13101558] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 12/03/2022] Open
Abstract
Interest in carbon and clay-based nanofillers has grown in recent years. The crystallization behavior of low-density polyethylene (LDPE) was studied using a variety of notable nanofillers used in engineering applications and prepared using a solution crystallization method. Carbon nanotubes (CNTs), graphene oxide nano-platelets, clay (montmorillonite), and modified clay (surface-modified with trimethyl stearyl ammonium) were used to induce heterogeneous crystallization of LDPE. The crystallized LDPE samples, imaged using scanning and transmission electron microscopy, revealed different microstructures for each nanohybrid system, indicating these various nanofillers induce LDPE lamellae ordering. The underlying interactions between polymer and nanofiller were investigated using FTIR spectroscopy. X-ray diffraction (XRD) was used to determine crystallinity. This work examines how the differences in morphology and chemical structure of the nanofillers induce changes in the nucleation and growth of polymer crystals. These results will provide guidance on functional design of nano-devices with controlled properties.
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Affiliation(s)
- Dilip Depan
- Institute of Materials Research and Innovation, Department of Chemical Engineering, University of Louisiana at Lafayette, P.O. Box 43675, Lafayette, LA 70504-4130, USA;
- Correspondence:
| | - William Chirdon
- Institute of Materials Research and Innovation, Department of Chemical Engineering, University of Louisiana at Lafayette, P.O. Box 43675, Lafayette, LA 70504-4130, USA;
| | - Ahmed Khattab
- College of Engineering, University of Louisiana at Lafayette, P.O. Box 43675, Lafayette, LA 70504-4130, USA;
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12
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Jiang C, Wang K, Liu Y, Zhang C, Wang B. Using Wet Electrospun PCL/Gelatin/CNT Yarns to Fabricate Textile-Based Scaffolds for Vascular Tissue Engineering. ACS Biomater Sci Eng 2021; 7:2627-2637. [PMID: 33821604 DOI: 10.1021/acsbiomaterials.1c00097] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Incorporating conductive materials in scaffolds has shown advantages in regulating adhesion, mitigation, and proliferation of electroactive cells for tissue engineering applications. Among various conductive materials, carbon nanotubes (CNTs) have shown great promises in tissue engineering because of their good mechanical properties. However, the broad application of CNTs in tissue engineering is limited by current methods to incorporate CNTs in polymers that require miscible solvents to dissolve CNTs and polymers or CNT surface modification. These methods either limit polymer selections or adversely affect the properties of polymer/CNT composites. Here, we report a novel method to fabricate polymer/CNT composite yarns by electrospinning polycaprolactone/gelatin into a bath of CNT dispersion and extracting electrospun fibers out of the bath. The concentration of CNTs in the bath affects the thermal and mechanical properties and the yarns' degradation behavior. In vitro biological test results show that within a limited range of CNT concentrations in the bath, the yarns exhibit good biocompatibility and the ability to guide cell elongation and alignment. We also report the design and fabrication of a vascular scaffold by knitting the yarns into a textile fabric and combining the textile fabric with gelatin. The scaffold has similar mechanical properties to native vessels and supports cell proliferation. This work demonstrates that the wet electrospun polymer/CNT yarns are good candidates for constructing vascular scaffolds and provides a novel method to incorporate CNTs or other functional materials into biopolymers for tissue engineering applications.
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Affiliation(s)
- Chen Jiang
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr NW, Atlanta 30332, Georgia, United States.,Georgia Tech Manufacturing Institute, Callaway Manufacturing Research Center Building, 813 Ferst Dr NW, Atlanta 30332, Georgia, United States
| | - Kan Wang
- Georgia Tech Manufacturing Institute, Callaway Manufacturing Research Center Building, 813 Ferst Dr NW, Atlanta 30332, Georgia, United States
| | - Yi Liu
- Georgia Tech Manufacturing Institute, Callaway Manufacturing Research Center Building, 813 Ferst Dr NW, Atlanta 30332, Georgia, United States.,School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, North Ave NW, Atlanta 30332, Georgia, United States
| | - Chuck Zhang
- Georgia Tech Manufacturing Institute, Callaway Manufacturing Research Center Building, 813 Ferst Dr NW, Atlanta 30332, Georgia, United States.,H. Milton Stewart School of Industrial and System Engineering, Georgia Institute of Technology, 755 Ferst Dr NW, Atlanta 30332, Georgia, United States
| | - Ben Wang
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr NW, Atlanta 30332, Georgia, United States.,Georgia Tech Manufacturing Institute, Callaway Manufacturing Research Center Building, 813 Ferst Dr NW, Atlanta 30332, Georgia, United States.,H. Milton Stewart School of Industrial and System Engineering, Georgia Institute of Technology, 755 Ferst Dr NW, Atlanta 30332, Georgia, United States
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13
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Liu W, Wu X, Ou Y, Liu H, Zhang C. Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams. E-POLYMERS 2021. [DOI: 10.1515/epoly-2021-0013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Abstract
In spite of the high electrical conductivity of carbon nanotube (CNT), its tendency to aggregate and expensive cost in fabricating aerogel, foams, and porous materials remains a problem. Therefore, we described a simple and feasible way to design light-weight, high electrically conductive, and cost-efficient polylactic acid (PLA)/CNT foams. The branched PLA (BPLA) resin with excellent melt elasticity and foamability was induced by nucleophilic ring-opening reaction of epoxy-based acrylic/styrene copolymer and PLA. After that, BPLA/CNT composites and foams were prepared by melt-mixing and supercritical carbon dioxide foaming technology, respectively. The thermal, electrical, and foaming properties were studied. The resultant BPLA/CNT foam possessed a low density of 0.174 g/cm3 and high crystallinity of 3.03%. An improvement of the oriented structure of CNT induced by cell growth in BPLA matrix increased the conductivity of the foam up to 3.51 × 104 Ω/m. The proposed foaming materials provided a way for designing and preparing high performance CNT products.
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Affiliation(s)
- Wei Liu
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang 550003 , China
| | - Xian Wu
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang 550003 , China
| | - Yangjia Ou
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang 550003 , China
| | - Hao Liu
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang 550003 , China
| | - Chun Zhang
- School of Materials and Energy Engineering, Guizhou Institute of Technology , Guiyang 550003 , China
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14
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Shahnooshi M, Javadi A, Nazockdast H, Ottermann K, Altstädt V. Rheological rationalization of in situ nanofibrillar structure development: Tailoring of nanohybrid shish-kebab superstructures of poly (lactic acid) crystalline phase. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Braga NF, Ding H, Sun L, Passador FR. Antistatic packaging based on
PTT
/
PTT‐
g
‐MA
/
ABS
/
MWCNT
nanocomposites: Effect of the chemical functionalization of
MWCNTs. J Appl Polym Sci 2020. [DOI: 10.1002/app.50005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Natália Ferreira Braga
- Department of Science and Technology, Polymer and Biopolymer Technology Laboratory (TecPBio) Federal University of São Paulo (UNIFESP) São José dos Campos São Paulo Brazil
- Polymer Program, Institute of Materials Science and Department of Chemical & Biomolecular Engineering University of Connecticut Storrs Connecticut USA
| | - Hao Ding
- Polymer Program, Institute of Materials Science and Department of Chemical & Biomolecular Engineering University of Connecticut Storrs Connecticut USA
| | - Luyi Sun
- Polymer Program, Institute of Materials Science and Department of Chemical & Biomolecular Engineering University of Connecticut Storrs Connecticut USA
| | - Fabio Roberto Passador
- Department of Science and Technology, Polymer and Biopolymer Technology Laboratory (TecPBio) Federal University of São Paulo (UNIFESP) São José dos Campos São Paulo Brazil
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16
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Park M, Yoon S, Park J, Park NH, Ju SY. Flavin Mononucleotide-Mediated Formation of Highly Electrically Conductive Hierarchical Monoclinic Multiwalled Carbon Nanotube-Polyamide 6 Nanocomposites. ACS NANO 2020; 14:10655-10665. [PMID: 32806060 DOI: 10.1021/acsnano.0c05170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Although the multiwalled carbon nanotube (MWNT) is a promising material for use in the production of high electrical conductivity (σ) polymer nanocomposites, its tendency to aggregate and distribute randomly in a polymer matrix is a problematic issue. In the current study, we developed a highly conductive and monoclinically aligned MWNT-polyamide 6 (PA) nanocomposite containing interfacing flavin moieties. In this system, the flavin mononucleotide (FMN) initially serves as a noncovalent aqueous surfactant for individualizing MWNTs in the form of FMN-wrapped MWNTs (FMN-MWNT), and then partially decomposed FMN (dFMN) induces crystallization of the PA on the MWNTs. The results of experiments performed using material subjected to partial dissolution of PA matrix show that the nanocomposite PA-dFMN-MWNT, formed by melt extrusion of PA and dFMN-MWNT, contains a three-dimensional monoclinic MWNT network embedded in an equally monoclinic PA matrix. An increase in monoclinic network promoted by an increase in the content of MWNT increases σ of the nanocomposite up to 100 S/m, the highest value reported for a polymer-MWNT nanocomposite. X-ray diffraction along with transmission electron microscopy reveal that the presence of dFMN induces the formation of monoclinic PA on dFMN-MWNT. The high σ of the PA-dFMN-MWNT nanocomposite is also a consequence of a minimization of defect formation of MWNT by noncovalent functionalization. Hierarchical structural ordering, yet individualization of MWNTs, provides a viable strategy to improve the physical property of nanocomposites.
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Affiliation(s)
- Minsuk Park
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Seulki Yoon
- Human Convergence Technology Group, Korea Institute of Industrial Technology, Ansan-Si, Gyeonggi-Do 15588, Republic of Korea
| | - Junmo Park
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
| | - No-Hyung Park
- Department of Textile Convergence of Biotechnology and Nanotechnology, Korea Institute of Industrial Technology, Ansan-Si, Gyeonggi-Do 15588, Republic of Korea
| | - Sang-Yong Ju
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea
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17
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Lee WJ, Paineau E, Anthony DB, Gao Y, Leese HS, Rouzière S, Launois P, Shaffer MSP. Inorganic Nanotube Mesophases Enable Strong Self-Healing Fibers. ACS NANO 2020; 14:5570-5580. [PMID: 32255336 PMCID: PMC7304920 DOI: 10.1021/acsnano.9b09873] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The assembly of one-dimensional nanomaterials into macroscopic fibers can improve mechanical as well as multifunctional performance. Double-walled aluminogermanate imogolite nanotubes are geo-inspired analogues of carbon nanotubes, synthesized at low temperature, with complementary properties. Here, continuous imogolite-based fibers are wet-spun within a poly(vinyl alcohol) matrix. The lyotropic liquid crystallinity of the system produces highly aligned fibers with tensile stiffness and strength up to 24.1 GPa (14.1 N tex-1) and 0.8 GPa (0.46 N tex-1), respectively. Significant enhancements over the pure polymer control are quantitatively attributed to both matrix refinement and direct nanoscale reinforcement, by fitting an analytical model. Most intriguingly, imogolite-based fibers show a high degree of healability via evaporation-induced self-assembly, recovering up to 44% and 19% of the original fiber tensile stiffness and strength, respectively. This recovery at high absolute strength highlights a general strategy for the development of high-performance healable fibers relevant to composite structures and other applications.
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Affiliation(s)
- Won Jun Lee
- Department of Materials,
Department of Chemistry, South Kensington Campus, Imperial College London, London, U.K. SW7 2AZ
| | - Erwan Paineau
- Laboratoire
de Physique des Solides, UMR CNRS 8502, Université Paris Sud, Université Paris Saclay, Bâtiment 510, Orsay, Île-de-France FR 91405, France
| | - David Benbow Anthony
- Department of Materials,
Department of Chemistry, South Kensington Campus, Imperial College London, London, U.K. SW7 2AZ
| | - Yulin Gao
- Department of Materials,
Department of Chemistry, South Kensington Campus, Imperial College London, London, U.K. SW7 2AZ
| | - Hannah Siobhan Leese
- Department of Materials,
Department of Chemistry, South Kensington Campus, Imperial College London, London, U.K. SW7 2AZ
| | - Stéphan Rouzière
- Laboratoire
de Physique des Solides, UMR CNRS 8502, Université Paris Sud, Université Paris Saclay, Bâtiment 510, Orsay, Île-de-France FR 91405, France
| | - Pascale Launois
- Laboratoire
de Physique des Solides, UMR CNRS 8502, Université Paris Sud, Université Paris Saclay, Bâtiment 510, Orsay, Île-de-France FR 91405, France
| | - Milo Sebastian Peter Shaffer
- Department of Materials,
Department of Chemistry, South Kensington Campus, Imperial College London, London, U.K. SW7 2AZ
- E-mail:
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18
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Differences in Crystallization Behaviors between Cyclic and Linear Polymer Nanocomposites. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2403-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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19
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Thermally reduced graphene/polyethylene nanocomposites: effects of graphene on isothermal and nonisothermal crystallization of polyethylene. Heliyon 2020; 6:e03589. [PMID: 32195403 PMCID: PMC7078567 DOI: 10.1016/j.heliyon.2020.e03589] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 11/27/2019] [Accepted: 03/10/2020] [Indexed: 12/02/2022] Open
Abstract
The crystallization behavior of polyethylene/thermally reduced graphene (PE/TRG) nanocomposites prepared via solvent blending is investigated using a differential scanning calorimeter, and results are compared with PE/carbon black (CB) composites. The effects of TRG and CB concentrations on the crystallization process are studied under isothermal and dynamic conditions. The Avrami and modified Avrami equations provided excellent fits to isothermal and dynamic crystallization kinetics data, respectively. The TRG nanosheets acted as nucleating agents during crystallization attributed to substantial decrease in crystallization half time at higher TRG concentrations. The reduced surface energy of the nanocomposites with incorporation of TRG further confirmed its nucleating behavior.
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20
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Janghela S, Devi S, Kambo N, Roy D, Mukhopadhyay K, Prasad NE. Microphase separation in oriented polymeric chains at the surface of nanomaterials during nanofiber formation. SOFT MATTER 2019; 15:6811-6818. [PMID: 31424069 DOI: 10.1039/c9sm01250h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The presence of low-dimensional functional nanofillers during the formation of morphological phase boundaries in polymeric nanofibers by electrospinning was highlighted in this study. PAN and TPU were both selected with differential viscosities to understand the phase-segregated internal supramolecular structures on functional surfaces of different length scales. The low-dimensional carbon nanofillers displayed a significant role in the topological orientation of the polymeric chains in TPU due to the presence of hard and soft segments in the geometry of TPU. The nano-hybrid shish-kebab-type microphase separation was observed on 1D nanofillers, whereas the anisotropic hierarchical microdomains were formed in the presence of 0D nanofillers. The 2D functional surface produced highly folded nanoscale lamellae by molecular interactions with polymeric chains. By combining different dimensional nanofillers, the hybrid 1D-2D networks created multifaceted structural hierarchies with epitaxial growth on the planar surface and shish-kebab geometry on the 1D functional backbone. Our study has demonstrated the significance of the configuration of nanoscale functional surfaces on the texture of polymeric chain assemblies during electrospinning for controlled flexible scaffolds.
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Affiliation(s)
- Shriram Janghela
- Directorate of Nanomaterials & Technologies, DMSRDE, Kanpur, 208013, India.
| | - Sudeepa Devi
- Directorate of Nanomaterials & Technologies, DMSRDE, Kanpur, 208013, India.
| | - Neelu Kambo
- Department of Textile Technology, UPTTI, Kanpur, 208001, India
| | - Debmalya Roy
- Directorate of Nanomaterials & Technologies, DMSRDE, Kanpur, 208013, India.
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21
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Kazemi Y, Kakroodi AR, Mark LH, Filleter T, Park CB. Effects of polymer-filler interactions on controlling the conductive network formation in polyamide 6/multi-Walled carbon nanotube composites. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121684] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Papadopoulou EL, Paul UC, Tran TN, Suarato G, Ceseracciu L, Marras S, d'Arcy R, Athanassiou A. Sustainable Active Food Packaging from Poly(lactic acid) and Cocoa Bean Shells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:31317-31327. [PMID: 31373784 DOI: 10.1021/acsami.9b09755] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Sustainable biocomposites have been developed by solvent mixing of poly(lactic acid) (PLA) with a fine powder of cocoa bean shells (CBS) and subsequent solution casting, using different concentrations of CBS. The inclusion of CBS recovers the crystallinity of the initially amorphous PLA films and improves the physical properties of the composites. Young's modulus increases by 80% with 75 wt % CBS inclusion; however, the composites maintain plasticity. The barrier properties of the hydrophobic composites were characterized, and the water vapor permeability is found to be ca. 3.5 × 10-5 g·m-1·day-1·Pa-1 and independent of the CBS content. On the other hand, oxygen permeability is found to depend on the CBS content, with values as low as 10 000 mL·μm·m-2·day-1·atm-1 for 50 wt % CBS. Furthermore, CBS confer antioxidant activity to the composites and improve swelling properties rendering the composites biodegradable in aquatic environments, reaching 70% of the maximum biodegradability in just 30 days. The above, in conjunction with the low level of migration measured in food simulant, make the PLA/CBS composites a highly promising material for active food packaging.
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23
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Depan D, Khattab A, Simoneaux A, Chirdon W. Crystallization kinetics of high‐density and low‐density polyethylene on carbon nanotubes. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dilip Depan
- Department of Chemical EngineeringInstitute for Materials Research and Innovation, University of Louisiana at Lafayette Lafayette Louisiana
| | - Ahmed Khattab
- Laboratory for Composite Materials, Department of Industrial TechnologyCollege of Engineering, University of Louisiana at Lafayette Lafayette Louisiana
| | - Austin Simoneaux
- Department of Chemical EngineeringInstitute for Materials Research and Innovation, University of Louisiana at Lafayette Lafayette Louisiana
| | - William Chirdon
- Department of Chemical EngineeringInstitute for Materials Research and Innovation, University of Louisiana at Lafayette Lafayette Louisiana
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24
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Minakov AA, Schick C. Nanoscale Heat Conduction in CNT-POLYMER Nanocomposites at Fast Thermal Perturbations. Molecules 2019; 24:molecules24152794. [PMID: 31370312 PMCID: PMC6696361 DOI: 10.3390/molecules24152794] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/22/2019] [Accepted: 07/26/2019] [Indexed: 11/30/2022] Open
Abstract
Nanometer scale heat conduction in a polymer/carbon nanotube (CNT) composite under fast thermal perturbations is described by linear integrodifferential equations with dynamic heat capacity. The heat transfer problem for local fast thermal perturbations around CNT is considered. An analytical solution for the nonequilibrium thermal response of the polymer matrix around CNT under local pulse heating is obtained. The dynamics of the temperature distribution around CNT depends significantly on the CNT parameters and the thermal contact conductance of the polymer/CNT interface. The effect of dynamic heat capacity on the local overheating of the polymer matrix around CNT is considered. This local overheating can be enhanced by very fast (about 1 ns) components of the dynamic heat capacity of the polymer matrix. The results can be used to analyze the heat transfer process at the early stages of “shish-kebab” crystal structure formation in CNT/polymer composites.
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Affiliation(s)
- Alexander A Minakov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, GPI RAS, Vavilov str. 38, 119991 Moscow, Russia
| | - Christoph Schick
- Institute of Physics and Competence Centre CALOR, University of Rostock, 18051 Rostock, Germany.
- Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russia.
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25
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Wang P, Gulgunje P, Ghoshal S, Verghese N, Kumar S. Rheological behavior of polypropylene nanocomposites with tailored polymer/multiwall carbon nanotubes interface. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Po‐Hsiang Wang
- School of Materials Science and EngineeringGeorgia Institute of Technology Atlanta Georgia
| | - Prabhakar Gulgunje
- School of Materials Science and EngineeringGeorgia Institute of Technology Atlanta Georgia
| | - Sushanta Ghoshal
- School of Materials Science and EngineeringGeorgia Institute of Technology Atlanta Georgia
| | | | - Satish Kumar
- School of Materials Science and EngineeringGeorgia Institute of Technology Atlanta Georgia
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26
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Le T, Subramanian R, Ajala O, Pellegrin P, Depan D. The mobility of PEG chains versus micellar stability towards the formation of PE‐b‐PEG nanohybrid shish‐kebab on carbon nanotubes. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tuan Le
- Department of Chemical EngineeringUniversity of Louisiana at Lafayette Lafayette LA 70503 U.S.A
| | - Ramalingam Subramanian
- Department of Chemical EngineeringUniversity of Louisiana at Lafayette Lafayette LA 70503 U.S.A
| | - Oluwakemi Ajala
- Department of Chemical EngineeringUniversity of Louisiana at Lafayette Lafayette LA 70503 U.S.A
| | - Padma Pellegrin
- Department of Chemical EngineeringUniversity of Louisiana at Lafayette Lafayette LA 70503 U.S.A
| | - Dilip Depan
- Department of Chemical EngineeringUniversity of Louisiana at Lafayette Lafayette LA 70503 U.S.A
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27
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Liu L, Huang YH, Xie DD, Chen LB, Chen R, Liu ZY, Yang W, Yang MB. Role of Controlled Diameter of Polyamide 6 (PA6) Fibers on the Formation of Interfacial Hybrid Crystal Morphology in HDPE/PA6 Microfibril Blend. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lei Liu
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Yan-Hao Huang
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Dan-Dan Xie
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Li-Bo Chen
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Rui Chen
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Zheng-Ying Liu
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Wei Yang
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Ming-Bo Yang
- College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China
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28
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Faust JL, Winter GA, Minus ML, Erb RM. Polypropylene crystallization at an alumina interface using single walled carbon nanotubes. J Colloid Interface Sci 2019; 543:9-16. [PMID: 30772536 DOI: 10.1016/j.jcis.2019.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 02/01/2019] [Accepted: 02/06/2019] [Indexed: 10/27/2022]
Abstract
Interfaces play an important and often limiting role in the mechanical, thermal, and electrical performance of composite materials. Here we suggest a novel method to improve the interfacial interaction in polypropylene-alumina composites using single-walled carbon nanotubes (SWNTs) to nucleate lamellar crystals at the interface. Macroscopic alumina substrates are used to determine the ideal crystallization parameters and investigate the kinetics of crystal growth. SWNTs are uniformly adsorbed to the interface via Van der Waals interactions and lamellar crystals are grown on the surface using isothermal solution processing techniques. Avrami analysis of crystal surface coverage was used to confirm one-dimensional transcrystalline growth commonly seen with SWNT nucleated crystals. Scanning electron microscopy was used to confirm shish-kebab structures present at the SWNT-polypropylene interface. The determined crystallization parameters were used on colloidal solutions of alumina platelets to successfully create uniformly coated particles with an improved interface. This method shows promise for improving the interphase of semicrystalline polymer-ceramic composites to achieve excellent material properties.
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Affiliation(s)
- Jessica L Faust
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, United States
| | - Gavin A Winter
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, United States
| | - Marilyn L Minus
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, United States.
| | - Randall M Erb
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, United States.
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29
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Liu R, Zhou Z, Liu Y, Liang Z, Ming Y, Hao T, Nie Y. Epitaxial orientation and localized microphase separation prior to formation of nanohybrid shish-kebabs induced by one-dimensional nanofiller in miscible diblock copolymers with selective interaction. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Klonos PA, Tegopoulos SN, Koutsiara CS, Kontou E, Pissis P, Kyritsis A. Effects of CNTs on thermal transitions, thermal diffusivity and electrical conductivity in nanocomposites: comparison between an amorphous and a semicrystalline polymer matrix. SOFT MATTER 2019; 15:1813-1824. [PMID: 30688327 DOI: 10.1039/c8sm02478b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Two series of polymer nanocomposites (PNCs) based on amorphous styrene-butadiene rubber (SBR) and semicrystalline linear low-density polyethylene (PE) matrices were filled with 2-15 wt% carbon nanotubes (CNT) and were studied by employing calorimetry, dielectric spectroscopy and laser flash analysis. The electrical conductivity, σ, increased with CNT loading and similar values were exhibited for the two matrices, uniquely depending on the concentration of the CNTs, suggesting practically no effects of the crystalline fraction (CF) on σ. For both types of matrix, a fraction of the polymer was found to be immobilized (rigid amorphous fraction, RAF). For the amorphous SBR, the RAF in PNCs originates uniquely from the presence of the filler (RAFfiller up to 0.19 wt). On the other hand, for the semicrystalline PE, the RAF is significantly larger (0.4-0.6 wt) due to the severe contribution of the RAF around the crystals (RAFcrystal). The thermal diffusivity, α, is quite low in both types of PNCs and exhibits higher values in the semicrystalline matrix (PE-based PNCs). Our results suggest that in these PNCs, heat transport mechanisms are activated mainly in the crystalline domains, more so with the additive contribution of the RAFcrystal. In the amorphous SBR-based PNCs, heat transport is facilitated mainly by CNTs, whereas the RAFfiller is found to be a good measure of the thermal resistance behavior of CNT/polymer interphases and consequently, of thermal diffusivity. Direct correlation of the results obtained by the three techniques with each other revealed the systematic dependence of α on the amount of RAF in each matrix; the α(RAF) trends, however, are different for the two matrices. Furthermore, the results suggest that the two RAFs exhibit different structural characteristics, e.g. the RAFcrystal exhibits a more ordered structure than the RAFfiller; this issue is still an open debate in the literature.
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Affiliation(s)
- Panagiotis A Klonos
- Department of Physics, National Technical University of Athens, Zografou Campus, 15780, Athens, Greece.
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31
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Xia X, Zhang X, Xie D, Huang Y, Li Y, Yang M. Influence of Diameter on the Templated Crystallization of Polyethylene/Carbon Material Fiber Composites under Intense Shear Flow. ACS OMEGA 2019; 4:1060-1067. [PMID: 31459382 PMCID: PMC6648897 DOI: 10.1021/acsomega.8b03104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 12/25/2018] [Indexed: 06/10/2023]
Abstract
In this study, carbon fibers (CFs) and carbon nanofibers (CNFs) were introduced into polyethylene (PE) and intensive shear flow was imposed on the melt during the melt second flow caused by gas penetrating the melt during the gas-assisted injection molding (GAIM). The effect of fiber diameter on crystalline morphologies of obtained composites was deeply studied. The results revealed the fact that no matter whether CFs or CNFs were introduced into the PE matrix or not, the orientation degree of PE lamellae would increase during the melt second flow. Hybrid shish-kebab structures were difficult to be formed in GAIM CF/PE composites and only a few oriented PE lamellae overgrew on the local surface of CFs. However for GAIM CNF/PE composites, the formation of hybrid shish-kebab structures was clearly observed in the entire thickness. The structural diversity was mainly ascribed to the difference of CF diameter, showing obvious size-dependent effect.
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Affiliation(s)
- Xiaochao Xia
- School
of Materials Science and Engineering, and Chongqing Key Laboratory
of Mold Technology, Chongqing University
of Technology, Chongqing 400054, China
| | - Xi Zhang
- Graduate
School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Dandan Xie
- College
of Polymer Science & Engineering, and the State Key Laboratory
of Polymer Materials Engineering, Sichuan
University, Chengdu 610065, Sichuan, PR China
| | - Yanhao Huang
- College
of Polymer Science & Engineering, and the State Key Laboratory
of Polymer Materials Engineering, Sichuan
University, Chengdu 610065, Sichuan, PR China
| | - Youbing Li
- School
of Materials Science and Engineering, and Chongqing Key Laboratory
of Mold Technology, Chongqing University
of Technology, Chongqing 400054, China
| | - Mingbo Yang
- College
of Polymer Science & Engineering, and the State Key Laboratory
of Polymer Materials Engineering, Sichuan
University, Chengdu 610065, Sichuan, PR China
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32
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Affiliation(s)
- Mark C. Staub
- Department of Materials Science and Engineering Drexel University Philadelphia Pennsylvania
| | - Christopher Y. Li
- Department of Materials Science and Engineering Drexel University Philadelphia Pennsylvania
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33
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Klonos PA. Crystallization, glass transition, and molecular dynamics in PDMS of low molecular weights: A calorimetric and dielectric study. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.11.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Wang M, Li L, Zhou S, Tang R, Yang Z, Zhang X. Influence of CNTs on the Crystalline Microstructure and Ferroelectric Behavior of P(VDF-TrFE). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10702-10710. [PMID: 30134096 DOI: 10.1021/acs.langmuir.8b02392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We investigate the effect of carbon nanotubes (CNTs) on the crystalline microstructure and ferroelectric behavior of polyvinylidene fluoride- co-trifluoroethylene (P(VDF-TrFE)). X-ray analysis suggests that CNT can act as a template and direct the chain orientation of P(VDF-TrFE) crystals. In the presence of CNTs, the molecular chain axis ( c axis) of the β-phase crystal is oriented parallel to the long axis of CNTs. Moreover, we find that this templating effect did not cause a polymorph transition. For P(VDF-TrFE)/CNT composites, the crystallinity of P(VDF-TrFE) is slightly decreased. The orientation of the c axis induced by the templating effect of CNTs has a significant impact on the ferroelectric behavior of P(VDF-TrFE). As compared to a pure P(VDF-TrFE) film, the remnant polarization of the P(VDF-TrFE)/CNT composite is enhanced. Correspondingly, the piezoelectric property of the P(VDF-TrFE)/CNT composite shows a significant enhancement.
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35
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Liu R, Yang L, Qiu X, Wu H, Zhang Y, Liu Y, Zhou Z, Ming Y, Hao T, Nie Y. One-dimensional nanofiller induced crystallization in random copolymers studied by dynamic Monte Carlo simulations. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1515485] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Rongjuan Liu
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Luyao Yang
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Xiaoyan Qiu
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Haitao Wu
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Yongqiang Zhang
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Yong Liu
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Zhiping Zhou
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Yongqiang Ming
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Tongfan Hao
- Institute of Green Chemistry and Chemical Technology, Jiangsu University, Zhenjiang, People’s Republic of China
| | - Yijing Nie
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, People’s Republic of China
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36
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Preparation of novel polyimide nanocomposites with high mechanical and tribological performance using covalent modified carbon nanotubes via Friedel-Crafts reaction. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.07.035] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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Ren Y, Li Z, Allcock HR. Molecular Engineering of Polyphosphazenes and SWNT Hybrids with Potential Applications as Electronic Materials. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00779] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yi Ren
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- School of Physical Science and Technology, Shanghai Technical University, Shanghai 201210, P. R. China
| | - Zhongjing Li
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Harry R. Allcock
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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38
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Agbolaghi S, Abbaspoor S, Abbasi F. A comprehensive review on polymer single crystals—From fundamental concepts to applications. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2017.11.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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39
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Dastjerdi J, Garmabi H. Influence of Nano-Sized Calcium Carbonate on Adhesion of HDPE/ Cross-Linked High Density Polyethylene Multilayer Structures. ADVANCES IN POLYMER TECHNOLOGY 2018. [DOI: 10.1002/adv.21733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Javad Dastjerdi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; No. 424 Hafez Ave. Tehran Iran
| | - Hamid Garmabi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; No. 424 Hafez Ave. Tehran Iran
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40
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Sheng J, Zhou S, Yang Z, Zhang X. Crystallization Behavior of Poly(ethylene oxide) in Vertically Aligned Carbon Nanotube Array. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3678-3685. [PMID: 29504758 DOI: 10.1021/acs.langmuir.8b00070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We investigate the effect of the presence of vertically aligned multiwalled carbon nanotubes (CNTs) on the orientation of poly(ethylene oxide) (PEO) lamellae and PEO crystallinity. The high alignment of carbon nanotubes acting as templates probably governs the orientation of PEO lamellae. This templating effect might result in the lamella planes of PEO crystals oriented along a direction parallel to the long axis of the nanotubes. The presence of aligned carbon nanotubes also gives rise to the decreases in PEO crystallinity, crystallization temperature, and melting temperature due to the perturbation of carbon nanotubes to the crystallization of PEO. These effects have significant implications for controlling the orientation of PEO lamellae and decreasing the crystallinity of PEO and thickness of PEO lamellae, which have significant impacts on ion transport in PEO/CNT composite and the capacitive performance of PEO/CNT composite. Both the decreased PEO crystallinity and the orientation of PEO lamellae along the long axes of vertically aligned CNTs give rise to the decrease in the charge transfer resistance, which is associated with the improvements in the ion transport and capacitive performance of PEO/CNT composite.
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Affiliation(s)
| | | | - Zhaohui Yang
- State Key Laboratory of Separation Membranes and Membrane Processes , Tianjin Polytechnic University , Tianjin 300387 , China
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41
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Bhattacharyya R, Janghela S, Saraiya A, Roy D, Mukhopadhyay K, Prasad NE. Effect of Reinforcement at Length Scale for Polyurethane Cellular Scaffolds by Supramolecular Assemblies. J Phys Chem B 2018; 122:2683-2693. [PMID: 29376384 DOI: 10.1021/acs.jpcb.7b11978] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This study is aimed to represent the role of carbonaceous nanofillers to reinforce the commercially available polyurethane porous structure. The effect of dimensionality of fillers to anchor the construction of stable three-dimensional (3D) cellular architectures has been highlighted. The cellular frameworks of commercially available thermoplastic polyurethane (TPU) have been fabricated through the thermoreversible supramolecular self-assembly route. It was established that the minimum shrinkage of TPU lattice structures occurred when the solid-state network is strengthened by the topologically engineered 3D hierarchical nanofillers, where the amount of reinforcement was found to play a critical role. It has been established by series of structure-property correlations that reinforcing the cellular structure to endure the capillary stress is equally effective as supercritical drying for producing low-density porous morphologies. The removal of liquid phase from gel is as important as the presence of 3D fillers in the matrix for reinforcing the cellular structures when replacing the solvent phase with air to generate a two-phase solid-gas engineered morphology. The insight into the polyurethane network structure revealed that the dimensionality, amount, and distribution of fillers in the matrix are critical for reinforcing the cellular scaffolds in solid gel without any cross-linking.
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Affiliation(s)
- Ruma Bhattacharyya
- Directorate of Nanomaterials and Technologies , DMSRDE , GT Road , Kanpur 208013 , India
| | - Shriram Janghela
- Directorate of Nanomaterials and Technologies , DMSRDE , GT Road , Kanpur 208013 , India
| | - Amit Saraiya
- Directorate of Nanomaterials and Technologies , DMSRDE , GT Road , Kanpur 208013 , India
| | - Debmalya Roy
- Directorate of Nanomaterials and Technologies , DMSRDE , GT Road , Kanpur 208013 , India
| | - Kingsuk Mukhopadhyay
- Directorate of Nanomaterials and Technologies , DMSRDE , GT Road , Kanpur 208013 , India
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42
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Klonos P, Sulym IY, Sternik D, Konstantinou P, Goncharuk OV, Deryło–Marczewska A, Gun'ko VM, Kyritsis A, Pissis P. Morphology, crystallization and rigid amorphous fraction in PDMS adsorbed onto carbon nanotubes and graphite. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Han C, Sahle-Demessie E, Zhao AQ, Richardson T, Wang J. Environmental aging and degradation of multiwalled carbon nanotube reinforced polypropylene. CARBON 2018; 129:137-151. [PMID: 32831356 PMCID: PMC7433849 DOI: 10.1016/j.carbon.2017.10.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The degradation of polypropylene (PP) and PP-multiwalled carbon nanotube (PP-MWCNT) panels during environmental weathering resulted in an increased degree of crystallinity, making them brittle, and creating surface cracks. The degradation led to a breakdown of the panels and increased the potential for nanorelease. Thermal analysis revealed that the thickness of the test panels and reinforcement with MWCNTs had a significant influence on the stability of PP-MWCNT composites. Differential scanning calorimetry indicated that the MWCNTs acted as nucleation points, increasing the crystallization temperatures of PP-MWCNT, which reduced the extent of aging. Weathering decreased both the melting and crystallization temperatures of PP by as much as 20 o C. The reduction in the temperatures was inversely proportional to the thickness of the panels. The activation energy (E a ) obtained using isoconversional kinetics of the TGA analysis showed that the effective thermo-oxidative degradations of PP changed during aging. The E a for the initial stages of thermal degradation decreased from ~330 kJ/mol to ~100 kJ/mol for aged PP. During the late degradation stages, the E a values increased to ~300 kJ/mol. These results suggest that early degradation were altered because of the changes in the molecular structure of the aged P and a shift in the degradation rate-limiting steps.
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Affiliation(s)
- Changseok Han
- Oak Ridge Institute for Science and Education, Oak Ridge, TN 37831, USA
| | - Endalkachew Sahle-Demessie
- U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Laboratory, 26 W. Martin Luther King Drive, Cincinnati, OH 45268, USA
| | - Amy Q Zhao
- U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Laboratory, 26 W. Martin Luther King Drive, Cincinnati, OH 45268, USA
| | - Teri Richardson
- U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Laboratory, 26 W. Martin Luther King Drive, Cincinnati, OH 45268, USA
| | - Jun Wang
- Perkin Elmer, Inc., 710 Bridgeport Avenue, Shelton, CT 06484-4794, USA
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Staub MC, Li CY. Confined and Directed Polymer Crystallization at Curved Liquid/Liquid Interface. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700455] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mark C. Staub
- Department of Materials Science and Engineering Drexel University College of Engineering 3141 Chestnut Street Philadelphia PA 19104 USA
| | - Christopher Y. Li
- Department of Materials Science and Engineering Drexel University College of Engineering 3141 Chestnut Street Philadelphia PA 19104 USA
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Plasticisation and compatibilisation of poly(propylene) with poly(lauryl acrylate) surface modified MWCNTs. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.11.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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46
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Wang X, Gao Y, Xu Y, Li X, Jiang J, Hou J, Han W, Li Q, Shen C. A Prerequisite of the Poly(ε-Caprolactone) Self-Induced Nanohybrid Shish-Kebab Structure Formation: An Ordered Crystal Lamellae Orientation Morphology of Fibers. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700414] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaofeng Wang
- National Center for International Research of Micro-Nano Molding Technology; Henan Key Laborotary of Micro Molding Technology; Zhengzhou University; Zhengzhou 450001 China
- School of Mechanics & Engineering Science; Zhengzhou University; Zhengzhou 450001 China
- State Key Laboratory of Molecular Engineering of Polymers (Fudan University); Shanghai 200433 China
| | - Yanhong Gao
- School of Materials Science & Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Yiyang Xu
- National Center for International Research of Micro-Nano Molding Technology; Henan Key Laborotary of Micro Molding Technology; Zhengzhou University; Zhengzhou 450001 China
- School of Mechanics & Engineering Science; Zhengzhou University; Zhengzhou 450001 China
| | - Xuyan Li
- National Center for International Research of Micro-Nano Molding Technology; Henan Key Laborotary of Micro Molding Technology; Zhengzhou University; Zhengzhou 450001 China
- School of Mechanics & Engineering Science; Zhengzhou University; Zhengzhou 450001 China
| | - Jing Jiang
- National Center for International Research of Micro-Nano Molding Technology; Henan Key Laborotary of Micro Molding Technology; Zhengzhou University; Zhengzhou 450001 China
- School of Mechanics & Engineering Science; Zhengzhou University; Zhengzhou 450001 China
| | - Jianhua Hou
- National Center for International Research of Micro-Nano Molding Technology; Henan Key Laborotary of Micro Molding Technology; Zhengzhou University; Zhengzhou 450001 China
- School of Mechanics & Engineering Science; Zhengzhou University; Zhengzhou 450001 China
| | - WenJuan Han
- School of Materials Science & Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Qian Li
- National Center for International Research of Micro-Nano Molding Technology; Henan Key Laborotary of Micro Molding Technology; Zhengzhou University; Zhengzhou 450001 China
- School of Mechanics & Engineering Science; Zhengzhou University; Zhengzhou 450001 China
| | - Changyu Shen
- National Center for International Research of Micro-Nano Molding Technology; Henan Key Laborotary of Micro Molding Technology; Zhengzhou University; Zhengzhou 450001 China
- School of Mechanics & Engineering Science; Zhengzhou University; Zhengzhou 450001 China
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47
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Bakir M, Meyer JL, Hussainova I, Sutrisno A, Economy J, Jasiuk I. Periodic Functionalization of Graphene‐Layered Alumina Nanofibers with Aromatic Thermosetting Copolyester via Epitaxial Step‐Growth Polymerization. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700338] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mete Bakir
- Department of Mechanical Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
| | - Jacob L. Meyer
- Department of Mechanical Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
- ATSP Innovations Champaign IL 61820 USA
| | - Irina Hussainova
- Department of Mechanical Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
- Centre of Innovative Industrial Materials Tallinn University of Technology Ehitajate 5 Tallinn 19180 Estonia
- ITMO University Kronverksky 49 St. Petersburg 197101 Russia
| | - Andre Sutrisno
- NMR/EPR Laboratory School of Chemical Sciences University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
| | - James Economy
- ATSP Innovations Champaign IL 61820 USA
- Department of Materials Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
| | - Iwona Jasiuk
- Department of Mechanical Science and Engineering University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
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Han R, Nie M, Wang Q. Continuously enhanced hoop strength of rotation-extruded polypropylene pipe via self-assembly β nucleating agent with different aspect ratio. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1379-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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Wu X, Chen X, Fan Z. Influence of graphene nanosheets on stereocomplex crystallization behaviors of star-shaped poly (D(L)-lactide) stereoblock copolymer. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaomeng Wu
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
| | - Xiaoyu Chen
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
| | - Zhongyong Fan
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
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50
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Conductive network formation and destruction in polypropylene/carbon nanotube composites via crystal control using supercritical carbon dioxide. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.09.056] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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