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Bianchi M, Dorigato A, Morreale M, Pegoretti A. Evaluation of the Physical and Shape Memory Properties of Fully Biodegradable Poly(lactic acid) (PLA)/Poly(butylene adipate terephthalate) (PBAT) Blends. Polymers (Basel) 2023; 15:polym15040881. [PMID: 36850164 PMCID: PMC9963890 DOI: 10.3390/polym15040881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/12/2023] Open
Abstract
Biodegradable polymers have recently become popular; in particular, blends of poly(lactic acid) (PLA) and poly(butylene adipate terephthalate) (PBAT) have recently attracted significant attention due to their potential application in the packaging field. However, there is little information about the thermomechanical properties of these blends and especially the effect induced by the addition of PBAT on the shape memory properties of PLA. This work, therefore, aims at producing and investigating the microstructural, thermomechanical and shape memory properties of PLA/PBAT blends prepared by melt compounding. More specifically, PLA and PBAT were melt-blended in a wide range of relative concentrations (from 85/15 to 25/75 wt%). A microstructural investigation was carried out, evidencing the immiscibility and the low interfacial adhesion between the PLA and PBAT phases. The immiscibility was also confirmed by differential scanning calorimetry (DSC). A thermogravimetric analysis (TGA) revealed that the addition of PBAT slightly improved the thermal stability of PLA. The stiffness and strength of the blends decreased with the PBAT amount, while the elongation at break remained comparable to that of neat PLA up to a PBAT content of 45 wt%, while a significant increment in ductility was observed only for higher PBAT concentrations. The shape memory performance of PLA was impaired by the addition of PBAT, probably due to the low interfacial adhesion observed in the blends. These results constitute a basis for future research on these innovative biodegradable polymer blends, and their physical properties might be further enhanced by adding suitable compatibilizers.
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Affiliation(s)
- Marica Bianchi
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Andrea Dorigato
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy
- Correspondence: (A.D.); (M.M.)
| | - Marco Morreale
- Faculty of Engineering and Architecture, Kore University of Enna, Cittadella Universitaria, 94100 Enna, Italy
- Correspondence: (A.D.); (M.M.)
| | - Alessandro Pegoretti
- Department of Industrial Engineering and INSTM Research Unit, University of Trento, Via Sommarive 9, 38123 Trento, Italy
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2
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Wu F, Hu J, Yang S, Li G, Chen H, Fang H. High‐efficiency shape memory copolymers of
polycaprolactone
/
thermoplastic polyurethane
fabricated via in situ ring‐opening polymerization. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Fangjuan Wu
- College of Materials Science and Engineering Fujian University of Technology Fuzhou China
- Key Laboratory of Polymer Materials and Products of Universities in Fujian Fujian University of Technology Fuzhou China
| | - Jiahuan Hu
- College of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Shangda Yang
- College of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Guifeng Li
- College of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Haoxiang Chen
- College of Materials Science and Engineering Fujian University of Technology Fuzhou China
| | - Hui Fang
- College of Materials Science and Engineering Fujian University of Technology Fuzhou China
- Key Laboratory of Polymer Materials and Products of Universities in Fujian Fujian University of Technology Fuzhou China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application Fujian University of Technology Fuzhou China
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3
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Wei W, Liu J, Huang J, Cao F, Qian K, Yao Y, Li W. Recent advances and perspectives of shape memory polymer fibers. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Chin CDW, Ringgold MA, Redline EM, Bregman AG, Hattar K, Peretti AS, Treadwell LJ. Fabrication, thermal analysis, and heavy ion irradiation resistance of epoxy matrix nanocomposites loaded with silane-functionalized ceria nanoparticles. Phys Chem Chem Phys 2022; 24:6552-6569. [PMID: 35262100 DOI: 10.1039/d1cp05033h] [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
This paper describes a detailed understanding of how nanofillers function as radiation barriers within the polymer matrix, and how their effectiveness is impacted by factors such as composition, size, loading, surface chemistry, and dispersion. We designed a comprehensive investigation of heavy ion irradiation resistance in epoxy matrix composites loaded with surface-modified ceria nanofillers, utilizing tandem computational and experimental methods to elucidate radiolytic damage processes and relate them to chemical and structural changes observed through thermal analysis, vibrational spectroscopy, and electron microscopy. A detailed mechanistic examination supported by FTIR spectroscopy data identified the bisphenol A moiety as a primary target for degradation reactions. Results of computational modeling by the Stopping Range of Ions in Matter (SRIM) Monte Carlo simulation were in good agreement with damage analysis from surface and cross-sectional SEM imaging. All metrics indicated that ceria nanofillers reduce the damage area in polymer nanocomposites, and that nanofiller loading and homogeneity of dispersion are key to effective damage prevention. The results of this study represent a significant pathway for engineered irradiation tolerance in a diverse array of polymer nanocomposite materials. Numerous areas of materials science can benefit from utilizing this facile and effective method to extend the reliability of polymer materials.
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Affiliation(s)
- Clare Davis-Wheeler Chin
- Advanced Materials Laboratory, Sandia National Laboratories, 1001 University Blvd. SE, Suite 100, Albuquerque, NM 87106, USA.
| | - Marissa A Ringgold
- Advanced Materials Laboratory, Sandia National Laboratories, 1001 University Blvd. SE, Suite 100, Albuquerque, NM 87106, USA.
| | - Erica M Redline
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, USA
| | - Avi G Bregman
- Advanced Materials Laboratory, Sandia National Laboratories, 1001 University Blvd. SE, Suite 100, Albuquerque, NM 87106, USA.
| | - Khalid Hattar
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, USA
| | - Amanda S Peretti
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, USA
| | - LaRico J Treadwell
- Advanced Materials Laboratory, Sandia National Laboratories, 1001 University Blvd. SE, Suite 100, Albuquerque, NM 87106, USA.
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Xu W, Pan Y, Deng J, Yin L, Zheng Z, Ding X. Reprocessable and Self‐Healing Shape Memory Epoxy Resin Based on Biphenyl Mesogen and Siloxane. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Weiming Xu
- Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yi Pan
- Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jinni Deng
- Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lv Yin
- Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
| | - Zhaohui Zheng
- Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiaobin Ding
- Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
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Hutchinson JM, Moradi S. Thermal Conductivity and Cure Kinetics of Epoxy-Boron Nitride Composites-A Review. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3634. [PMID: 32824496 PMCID: PMC7476057 DOI: 10.3390/ma13163634] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/02/2020] [Accepted: 08/09/2020] [Indexed: 11/16/2022]
Abstract
Epoxy resin composites filled with thermally conductive but electrically insulating particles play an important role in the thermal management of modern electronic devices. Although many types of particles are used for this purpose, including oxides, carbides and nitrides, one of the most widely used fillers is boron nitride (BN). In this review we concentrate specifically on epoxy-BN composites for high thermal conductivity applications. First, the cure kinetics of epoxy composites in general, and of epoxy-BN composites in particular, are discussed separately in terms of the effects of the filler particles on cure parameters and the cured composite. Then, several fundamental aspects of epoxy-BN composites are discussed in terms of their effect on thermal conductivity. These aspects include the following: the filler content; the type of epoxy system used for the matrix; the morphology of the filler particles (platelets, agglomerates) and their size and concentration; the use of surface treatments of the filler particles or of coupling agents; and the composite preparation procedures, for example whether or not solvents are used for dispersion of the filler in the matrix. The dependence of thermal conductivity on filler content, obtained from over one hundred reports in the literature, is examined in detail, and an attempt is made to categorise the effects of the variables and to compare the results obtained by different procedures.
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Affiliation(s)
- John M Hutchinson
- Departament de Màquines i Motors Tèrmics, ESEIAAT, Universitat Politècnica de Catalunya, Carrer Colom 11, 08222 Terrassa, Spain
| | - Sasan Moradi
- Departament de Màquines i Motors Tèrmics, ESEIAAT, Universitat Politècnica de Catalunya, Carrer Colom 11, 08222 Terrassa, Spain
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Ignatenko VY, Kostyuk AV, Kostina JV, Bakhtin DS, Makarova VV, Antonov SV, Ilyin SO. Heavy crude oil asphaltenes as a nanofiller for epoxy resin. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25399] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Viktoria Y. Ignatenko
- A.V. Topchiev Institute of Petrochemical SynthesisRussian Academy of Sciences Moscow Russia
| | - Anna V. Kostyuk
- A.V. Topchiev Institute of Petrochemical SynthesisRussian Academy of Sciences Moscow Russia
| | - Julia V. Kostina
- A.V. Topchiev Institute of Petrochemical SynthesisRussian Academy of Sciences Moscow Russia
| | - Danila S. Bakhtin
- A.V. Topchiev Institute of Petrochemical SynthesisRussian Academy of Sciences Moscow Russia
| | - Veronika V. Makarova
- A.V. Topchiev Institute of Petrochemical SynthesisRussian Academy of Sciences Moscow Russia
| | - Sergey V. Antonov
- A.V. Topchiev Institute of Petrochemical SynthesisRussian Academy of Sciences Moscow Russia
| | - Sergey O. Ilyin
- A.V. Topchiev Institute of Petrochemical SynthesisRussian Academy of Sciences Moscow Russia
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