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Paydayesh A, Damoukh S. Polymethyl Methacrylate/Polypropylene Blends Loaded with Graphene and Clay: Morphology, Mechanical Properties and Thermal Stability. J MACROMOL SCI B 2022. [DOI: 10.1080/00222348.2022.2049065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Azin Paydayesh
- Department of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran
| | - Sahar Damoukh
- Department of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran
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Henglun Cheng, Shang M, He Y, Shentu B, Gao Z. Synthesis and Effect of N,N'-Diphenylterephthalamide on Crystallization of Isotactic Polypropylene. POLYMER SCIENCE SERIES B 2020. [DOI: 10.1134/s1560090420050036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang Y, Lin X, Hu H. Combined effect of chemically compound graphene oxide‐calcium pimelate on crystallization behavior, morphology and mechanical properties of isotactic polypropylene. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4950] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yue‐Fei Zhang
- School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha China
| | - Xiang‐Feng Lin
- School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha China
| | - Hui Hu
- School of Chemical EngineeringFuzhou University Fuzhou China
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Nucleation of the β-polymorph in Composites of Poly(propylene) and Graphene Nanoplatelets. JOURNAL OF COMPOSITES SCIENCE 2019. [DOI: 10.3390/jcs3020038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The effects of graphene nanoplatelets (GNPs) on the nucleation of the β-polymorph of polypropylene (PP) were studied when melt-mixed at loadings of 0.1–5 wt % using a laboratory scale twin-screw (conical) extruder and a twin-screw (parallel) extruder with L/D = 40. At low GNP loadings (i.e., ≤0.3 wt %), the mixing efficiency of the extruder used correlated with the β-nucleating activity of GNPs for PP. GNP agglomeration at low loadings (<0.5 wt %) resulted in an increase in the β-phase fraction (Kβ) of PP, as determined from X-ray diffraction measurements, up to 37% at 0.1 wt % GNPs for composites prepared using a laboratory scale twin-screw (conical) extruder. The level of GNP dispersion and distribution was better when the composites were prepared using a 16-mm twin-screw (parallel) extruder, giving a Kβ increase of 24% upon addition of 0.1 wt % GNPs to PP. For GNP loadings >0.5 wt %, the level of GNP dispersion in PP did not influence the growth of β-crystals, where Kβ reached a value of 24%, regardless of the type of extruder used. From differential scanning calorimetry (DSC) measurements, the addition of GNPs to PP increased the crystallization temperature (Tc) of PP by 14 °C and 10 °C for the laboratory scale extruder and 16-mm extruder, respectively, confirming the nucleation of PP by GNPs. The degree of crystallinity (Xc%) of PP increased slightly at low GNP additions (≤0.3 wt %), but then decreased with increasing GNP content.
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Colonna S, Pérez-Camargo RA, Chen H, Liu G, Wang D, Müller AJ, Saracco G, Fina A. Supernucleation and Orientation of Poly(butylene terephthalate) Crystals in Nanocomposites Containing Highly Reduced Graphene Oxide. Macromolecules 2017; 50:9380-9393. [PMID: 29296028 PMCID: PMC5747490 DOI: 10.1021/acs.macromol.7b01865] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/23/2017] [Indexed: 11/29/2022]
Abstract
![]()
The
ring-opening polymerization of cyclic butylene terephthalate into
poly(butylene terephthalate) (pCBT) in the presence of reduced graphene
oxide (RGO) is an effective method for the preparation of polymer
nanocomposites. The inclusion of RGO nanoflakes dramatically affects
the crystallization of pCBT, shifting crystallization peak temperature
to higher temperatures and, overall, increasing the crystallization
rate. This was due to a supernucleating effect caused by RGO, which
is maximized by highly reduced graphene oxide. Furthermore, combined
analyses by differential scanning calorimetry (DSC) experiments and
wide-angle X-ray diffraction (WAXS) showed the formation of a thick
α-crystalline
form pCBT lamellae with a melting point of ∼250 °C, close
to the equilibrium melting temperature of pCBT. WAXS also demonstrated
the pair orientation of pCBT crystals with RGO nanoflakes, indicating
a strong interfacial interaction between the aromatic rings of pCBT
and RGO planes, especially with highly reduced graphene oxide.
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Affiliation(s)
- Samuele Colonna
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria 15121, Italy
| | - Ricardo A Pérez-Camargo
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Donostia-San Sebastián 20018, Spain
| | - Haiming Chen
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Guoming Liu
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Dujin Wang
- Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Alejandro J Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Donostia-San Sebastián 20018, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Guido Saracco
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria 15121, Italy
| | - Alberto Fina
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria 15121, Italy
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Yin B, Wen Y, Jia H, Wang J, Xu Z, Ding L. Synergistic effects of hybridization of carbon black and carbon nanotubes on the mechanical properties and thermal conductivity of a rubber blend system. JOURNAL OF POLYMER ENGINEERING 2017. [DOI: 10.1515/polyeng-2016-0375] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The effects of hybridization of multi-walled carbon nanotubes (MWCNTs) with carbon black (CB) and the structure-property relationships of nanocomposites based on hydrogenated nitrile-butadiene rubber/hydrogenated carboxylated nitrile-butadiene rubber blends were extensively studied. MWCNTs used in this work were modified through acid treatment to improve the dispersion of MWCNTs in the rubber matrix and the surface interaction between MWCNTs and matrix. Synergistic interaction between CB and MWCNTs increased the tensile modulus and tear strength of nanocomposites. The effect of MWCNTs on the transport properties invoked an increment in the thermal conductivity of the nanocomposites. A combination of 10 phr (parts per hundred rubber) MWCNTs with 40 phr CB dramatically increased the modulus at 100% elongation, tear strength, and thermal conductivity of the nanocomposite by 66%, 28%, and 36%, respectively, compared with those of nanocomposite filled with 40 phr CB.
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Papageorgiou DG, Chrissafis K, Bikiaris DN. β-Nucleated Polypropylene: Processing, Properties and Nanocomposites. POLYM REV 2015. [DOI: 10.1080/15583724.2015.1019136] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Michell RM, Mugica A, Zubitur M, Müller AJ. Self-Nucleation of Crystalline Phases Within Homopolymers, Polymer Blends, Copolymers, and Nanocomposites. POLYMER CRYSTALLIZATION I 2015. [DOI: 10.1007/12_2015_327] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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