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Francucci G, Rodriguez E, Rodriguez ME. Ultrasound-Assisted Extrusion Compounding of Nano Clay/Polypropylene Nano Compounds. Polymers (Basel) 2024; 16:2426. [PMID: 39274059 PMCID: PMC11397230 DOI: 10.3390/polym16172426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2024] [Revised: 08/23/2024] [Accepted: 08/23/2024] [Indexed: 09/16/2024] Open
Abstract
The incorporation of nanoparticles can significantly enhance the properties of polymers. However, the industrial production of nanocomposites presents a technological challenge in achieving the proper dispersion of nanoparticles within the polymer matrix. In this work, a novel device is presented that can be seamlessly integrated with standard twin-screw extruders, enabling the application of ultrasonic vibration to molten polymeric material. The primary objective of this study is to experimentally validate the effectiveness of this technology in improving the dispersion of nanoparticles. To accomplish this, a comparative analysis was carried out between nanocomposites obtained through conventional compounding extrusion and those processed with the assistance of ultrasonic vibrations. The nanocomposites under investigation consist of a polypropylene (PP) matrix reinforced with nano clays (Cloisite 20A) at a target loading ratio of 5% by weight. To comprehensively evaluate the impact of the ultrasound-assisted compounding, various key properties were assessed, such as the melt flow index (MFI) to characterize the flow behavior, mechanical properties to evaluate the structural performance, oxygen barrier properties to assess potential gas permeability, and microstructure analysis using Scanning Electron Microscopy (SEM) for detailed morphology characterization. The results suggested an improvement in nanoparticle dispersion when using the ultrasound device, particularly when the intensity was adjusted to 60%.
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Affiliation(s)
- Gaston Francucci
- Eurecat-Centre Tecnològic de Catalunya, Unit of Polymeric and Composites Processes, Av. Universitat Autònoma, 23, 08290 Cerdanyola del Vallès, Spain
| | - Elena Rodriguez
- Eurecat-Centre Tecnològic de Catalunya, Unit of Polymeric and Composites Processes, Av. Universitat Autònoma, 23, 08290 Cerdanyola del Vallès, Spain
| | - María Eugenia Rodriguez
- Eurecat-Centre Tecnològic de Catalunya, Unit of Polymeric and Composites Processes, Av. Universitat Autònoma, 23, 08290 Cerdanyola del Vallès, Spain
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Rivollier N, Schwiddessen R, Cabrera G, Combeaud C, Schorr S, Dennler G. Montmorillonite Exfoliation in LLDPE and Factors Affecting Its Orientation: From Monolayer to Multi-Nano-Layer Polymer Films. Polymers (Basel) 2024; 16:200. [PMID: 38256999 PMCID: PMC10820231 DOI: 10.3390/polym16020200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
The motivations of the present work are to investigate the exfoliation of montmorillonite within a linear low-density polyethylene matrix and to control its orientation during the cast extrusion process. The first part is focused on the exfoliation of the montmorillonite through the melt extrusion process. The accuracy and relevance of each method used to determine the exfoliation state of montmorillonite have been examined, thanks to X-ray diffraction, transmission electronic microscopy, and rheology. All these methods have presented limitations, but the combination of all leads to a better estimation of the exfoliation state. Finally, the orientation of the montmorillonite is quantified systematically by X-ray texture analysis and correlated with process parameters to discern which one is affecting their orientation. The results have demonstrated an enhancement of the "in-plane" orientation of the montmorillonite with the exfoliation, especially at high concentration and when combined with cast extrusion. Finally, in the multi-nano-layer polymer film configuration, the reduction of the individual layers 29 nm thickness leads to some orientation improvements. However, these improvements are almost at the same level as the concentration effect in a monolayer system. This work gives an overview of all the parameters needed to achieve a significant organo-modified montmorillonite "in-plane" orientation.
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Affiliation(s)
- Noémie Rivollier
- Industrial Technical Centre for Plastics and Composites (IPC), 01100 Bellignat, France
- Institute of Geological Science, Freie Universität Berlin, Malteserstr. 74-100, 12249 Berlin, Germany
| | - René Schwiddessen
- Helmholtz-Zentrum Berlin, Department of Structure and Dynamic of Energy Materials, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Geraldine Cabrera
- Industrial Technical Centre for Plastics and Composites (IPC), 01100 Bellignat, France
| | - Christelle Combeaud
- MINES Paris, PSL University, Center for Materials Forming (CEMEF), UMR CNRS 7635, 1 Rue Claude Daunesse, CS 10207, 06904 Sophia Antipolis, France
| | - Susan Schorr
- Institute of Geological Science, Freie Universität Berlin, Malteserstr. 74-100, 12249 Berlin, Germany
- Helmholtz-Zentrum Berlin, Department of Structure and Dynamic of Energy Materials, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Gilles Dennler
- Industrial Technical Centre for Plastics and Composites (IPC), 01100 Bellignat, France
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On the Use of Dolomite as a Mineral Filler and Co-Filler in the Field of Polymer Composites: A Review. Polymers (Basel) 2022; 14:polym14142843. [PMID: 35890619 PMCID: PMC9319815 DOI: 10.3390/polym14142843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/07/2022] [Accepted: 07/10/2022] [Indexed: 12/10/2022] Open
Abstract
Polymers are being used in many applications all around the world. However, there are some drawbacks in the properties of polymers that could hamper their usage in certain applications. Therefore, a new material polymer composite was introduced. A polymer composite is a polymer-based material with the addition of a filler. Many researchers have reported the improvement in the properties of a polymer when a filler was introduced. This helps minimize the disadvantages of using a polymer. As a result, polymer composite products can be used in many industries, such as automobile, aerospace, biomedical, and packaging. Fillers derived from natural minerals, such as dolomite, are among the best reinforcement materials for polymeric materials because they are plentiful and low cost, have high rigidity and hardness, and even have tailorable surface chemistry. The use of dolomite as a filler in a polymer composite system has gained increasing attention in recent years after researchers successfully proved that it is capable of improving the mechanical, physical, and thermal properties of various polymeric materials. However, chemical or physical treatment/modification of raw dolomite is needed in order to prepare it as an efficient reinforcing filler. This procedure helps to improve the performance of the resultant polymer composites. This article reviews the usage of dolomite as a filler in a variety of polymeric materials and how it improved the performance of the polymer composite materials. It also highlights several methods that have been used for the purpose dolomite’s treatment/modification. Furthermore, the role of dolomite as a co-filler or a hybrid filler in a polymer composite system is also discussed, revealing the great potential and prospect of this mineral filler in the field of polymer composites for advanced applications.
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Kumar S, Singh R, Singh TP, Batish A, Singh M. Multi-stage Primary and Secondary Recycled PLA Composite Matrix for 3D Printing Applications. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2022. [DOI: 10.1007/s40010-022-00783-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Morinval A, Averous L. Systems Based on Biobased Thermoplastics: From Bioresources to Biodegradable Packaging Applications. POLYM REV 2021. [DOI: 10.1080/15583724.2021.2012802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Alexis Morinval
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, Strasbourg, Cedex 2, France
| | - Luc Averous
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, Strasbourg, Cedex 2, France
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Teixeira PF, Covas JA, Hilliou L. In-Line Rheo-Optical Investigation of the Dispersion of Organoclay in a Polymer Matrix during Twin-Screw Compounding. Polymers (Basel) 2021; 13:polym13132128. [PMID: 34209496 PMCID: PMC8273648 DOI: 10.3390/polym13132128] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/17/2021] [Accepted: 06/22/2021] [Indexed: 11/23/2022] Open
Abstract
The dispersion mechanisms in a clay-based polymer nanocomposite (CPNC) during twin-screw extrusion are studied by in-situ rheo-optical techniques, which relate the CPNC morphology with its viscosity. This methodology avoids the problems associated with post extrusion structural rearrangement. The polydimethylsiloxane (PDMS) matrix, which can be processed at ambient and low temperatures, is used to bypass any issues associated with thermal degradation. Local heating in the first part of the extruder allows testing of the usefulness of low matrix viscosity to enhance polymer intercalation before applying larger stresses for clay dispersion. The comparison of clay particle sizes measured in line with models for the kinetics of particle dispersion indicates that larger screw speeds promote the break-up of clay particles, whereas smaller screw speeds favor the erosion of the clay tactoids. Thus, different levels of clay dispersion are generated, which do not simply relate to a progressively better PDMS intercalation and higher clay exfoliation as screw speed is increased. Reducing the PDMS viscosity in the first mixing zone of the screw facilitates dispersion at lower screw speeds, but a complex interplay between stresses and residence times at larger screw speeds is observed. More importantly, the results underline that the use of larger stresses is inefficient per se in dispersing clay if sufficient time is not given for PDMS to intercalate the clay galleries and thus facilitate tactoid disruption or erosion.
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Al‐Maqdasi Z, Pupure L, Gong G, Emami N, Joffe R. Time‐dependent properties of graphene nanoplatelets reinforced high‐density polyethylene. J Appl Polym Sci 2021. [DOI: 10.1002/app.50783] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zainab Al‐Maqdasi
- Department of Engineering Sciences and Mathematics Luleå University of Technology Luleå Sweden
| | - Liva Pupure
- Department of Engineering Sciences and Mathematics Luleå University of Technology Luleå Sweden
- Riga Technical University, Institute of Construction and Reconstruction Riga Latvia
| | - Guan Gong
- RISE SICOMP AB, Composite materials and product development Piteå Sweden
| | - Nazanin Emami
- Department of Engineering Sciences and Mathematics Luleå University of Technology Luleå Sweden
| | - Roberts Joffe
- Department of Engineering Sciences and Mathematics Luleå University of Technology Luleå Sweden
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Extension‐dominated
improved dispersive mixing in
single‐screw
extrusion. Part 1: Computational and experimental validation. J Appl Polym Sci 2021. [DOI: 10.1002/app.49716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Sanes J, Sánchez C, Pamies R, Avilés MD, Bermúdez MD. Extrusion of Polymer Nanocomposites with Graphene and Graphene Derivative Nanofillers: An Overview of Recent Developments. MATERIALS 2020; 13:ma13030549. [PMID: 31979287 PMCID: PMC7040573 DOI: 10.3390/ma13030549] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/14/2020] [Accepted: 01/21/2020] [Indexed: 02/07/2023]
Abstract
This review is focused on the recent developments of nanocomposite materials that combine a thermoplastic matrix with different forms of graphene or graphene oxide nanofillers. In all cases, the manufacturing method of the composite materials has been melt-processing, in particular, twin-screw extrusion, which can then be followed by injection molding. The advantages of this processing route with respect to other alternative methods will be highlighted. The results point to an increasing interest in biodegradable matrices such as polylactic acid (PLA) and graphene oxide or reduced graphene oxide, rather than graphene. The reasons for this will also be discussed.
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