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Eraslan K, Altınbay A, Nofar M. In-situ self-reinforcement of amorphous polylactide (PLA) through induced crystallites network and its highly ductile and toughened PLA/poly(butylene adipate-co-terephthalate) (PBAT) blends. Int J Biol Macromol 2024; 272:132936. [PMID: 38848828 DOI: 10.1016/j.ijbiomac.2024.132936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/26/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Crystallites of a semicrystalline polylactide (cPLA) were induced in an amorphous PLA (aPLA) and its blends with poly(butylene adipate-co-terephthalate) (PBAT) to achieve in-situ self-reinforced PLA based structures. The approach involved the melt blending of cPLA as a minor phase with aPLA and its blends with PBAT at processing temperatures below the crystal melting peak of cPLA. An injection molding (IM) process was first adopted to obtain self-reinforced PLA (SR-PLA) structures at aPLA/cPLA weight ratios of 100/0, 95/5, 90/10, 85/15, and 80/20. IM barrel and mold temperatures revealed crucial impacts on preserving the cPLA crystallites and thereby enhancing the final mechanical performance of SR-PLA (i.e., aPLA/cPLA) samples. SR-PLA samples at various aPLA/cPLA weight ratios of 100/0, 90/10, 80/20, and 70/30 were then melt blended with PBAT to produce SR-PLA/PBAT at a given ratio of 85/15. These blends were first prepared in an internal melt mixer (MM) to evaluate the rheological properties. The rheological analysis confirmed the significance of cPLA reinforcing efficiency within SR-PLA and its corresponding blends with PBAT. Similar SR-PLA/PBAT blends were also prepared using the IM process to explore their thermal and mechanical characteristics. The effect of cPLA concentrations in blends was distinctive, leading to significant enhancements in stain at break and toughness values. This was due to the increased crystallite network within the matrix, further refining PBAT droplets. Morphological analysis of the melt-processed blends through MM and IM also revealed that the PBAT droplets were further refined when the IM process was applied. The induced shear during the molding could have further elongated the cPLA crystallites towards a fiberlike structure, which could additionally cause the matrix viscosity to increase and refine the PBAT droplets.
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Affiliation(s)
- Kerim Eraslan
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey
| | - Aylin Altınbay
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey; Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Esenler, Istanbul 34220, Turkey
| | - Mohammadreza Nofar
- Sustainable & Green Plastics Laboratory, Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul 34469, Turkey.
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2
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Faba S, Arrieta MP, Romero J, Agüero Á, Torres A, Martínez S, Rayón E, Galotto MJ. Biodegradable nanocomposite poly(lactic acid) foams containing carvacrol-based cocrystal prepared by supercritical CO 2 processing for controlled release in active food packaging. Int J Biol Macromol 2024; 254:127793. [PMID: 37926308 DOI: 10.1016/j.ijbiomac.2023.127793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/15/2023] [Accepted: 10/29/2023] [Indexed: 11/07/2023]
Abstract
Compounds derived from essential oils have been used in active packaging, but their volatility and degradability negatively affect stability and leads to high release rates. The present study aimed to develop PLA bionanocomposite foams loaded with carvacrol cocrystal by supercritical CO2 and its release into a food simulant for control release in food packaging. For this purpose, 4,4'-bipyridine was used as coformer and carvacrol as active agent. Cocrystallized closed cell foams were obtained using supercritical CO2 and were characterized in terms of their physicochemical and mechanical properties, and release kinetics to a D1 simulant were evaluated as well as the antioxidant ability. A better overall mechanical behavior due to the nanoclay promoting a higher interfacial adhesion with the polymeric matrix was revealed. A higher incorporation of carvacrol was observed in samples with higher C30B content. The incorporated cocrystals showed a decrease of one order of magnitude in the estimated effective diffusion coefficient of carvacrol and showed antioxidant activity. These results suggest that the nanocomposite foam containing carvacrol-based cocrystals could be used in active packaging systems with controlled release characteristics, especially with highly volatile compounds, and can be proposed for other fields such as biomedical applications.
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Affiliation(s)
- Simón Faba
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile.
| | - Marina P Arrieta
- Departamento de Ingeniería Química Industrial y del Medio Ambiente, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), Calle José Gutiérrez Abascal 2, 28006 Madrid, Spain; Grupo de Investigación: Polímeros, Caracterización y Aplicaciones (POLCA), 28006 Madrid, Spain
| | - Julio Romero
- Laboratory of Membrane Separation Processes (LabProSeM), Department of Chemical Engineering and Bioprocesses, Engineering Faculty, University of Santiago de Chile (USACH), 9170201 Santiago, Chile
| | - Ángel Agüero
- Departamento de Ingeniería Química Industrial y del Medio Ambiente, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), Calle José Gutiérrez Abascal 2, 28006 Madrid, Spain; Institut de Tecnologia de Materials (ITM), Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain
| | - Alejandra Torres
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Sara Martínez
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Emilio Rayón
- Institut de Tecnologia de Materials, Universitat Politècnica de València (UPV), Camino de Vera, s/n, Código Postal 46022 Valencia, Spain
| | - María José Galotto
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile.
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3
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Rajeshkumar L, Kumar PS, Ramesh M, Sanjay MR, Siengchin S. Assessment of biodegradation of lignocellulosic fiber-based composites - A systematic review. Int J Biol Macromol 2023; 253:127237. [PMID: 37804890 DOI: 10.1016/j.ijbiomac.2023.127237] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/29/2023] [Accepted: 10/01/2023] [Indexed: 10/09/2023]
Abstract
Lignocellulosic fiber-reinforced polymer composites are the most extensively used modern-day materials with low density and better specific strength specifically developed to render better physical, mechanical, and thermal properties. Synthetic fiber-reinforced composites face some serious issues like low biodegradability, non-environmentally friendly, and low disposability. Lignocellulosic or natural fiber-reinforced composites, which are developed from various plant-based fibers and animal-based fibers are considered potential substitutes for synthetic fiber composites because they are characterized by lightweight, better biodegradability, and are available at low cost. It is very much essential to study end-of-life (EoL) conditions like biodegradability for the biocomposites which occur commonly after their service life. During biodegradation, the physicochemical arrangement of the natural fibers, the environmental conditions, and the microbial populations, to which the natural fiber composites are exposed, play the most influential factors. The current review focuses on a comprehensive discussion of the standards and assessment methods of biodegradation in aerobic and anaerobic conditions on a laboratory scale. This review is expected to serve the materialists and technologists who work on the EoL behaviour of various materials, particularly in natural fiber-reinforced polymer composites to apply these standards and test methods to various classes of biocomposites for developing sustainable materials.
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Affiliation(s)
- L Rajeshkumar
- Centre for Machining and Materials Testing, KPR Institute of Engineering and Technology, Coimbatore, Tamil Nadu, India
| | - P Sathish Kumar
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand
| | - M Ramesh
- Department of Mechanical Engineering, KIT-Kalaignarkarunanidhi Institute of Technology, Coimbatore, Tamil Nadu, India
| | - M R Sanjay
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand.
| | - Suchart Siengchin
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand
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4
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Grande-Tovar CD, Castro JI, Valencia Llano CH, Tenorio DL, Saavedra M, Zapata PA, Chaur MN. Polycaprolactone (PCL)-Polylactic Acid (PLA)-Glycerol (Gly) Composites Incorporated with Zinc Oxide Nanoparticles (ZnO-NPs) and Tea Tree Essential Oil (TTEO) for Tissue Engineering Applications. Pharmaceutics 2022; 15:pharmaceutics15010043. [PMID: 36678672 PMCID: PMC9864333 DOI: 10.3390/pharmaceutics15010043] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/25/2022] Open
Abstract
The search for new biocompatible materials that can replace invasive materials in biomedical applications has increased due to the great demand derived from accidents and diseases such as cancer in various tissues. In this sense, four formulations based on polycaprolactone (PCL) and polylactic acid (PLA) incorporated with zinc oxide nanoparticles (ZnO-NPs) and tea tree essential oil (TTEO) were prepared. The sol-gel method was used for zinc oxide nanoparticle synthesis with an average size of 11 ± 2 nm and spherical morphology. On the other hand, Fourier Transformed infrared spectroscopy (FTIR) showed characteristic functional groups for each composite component. The TTEO incorporation in the formulations was related to the increased intensity of the C-O-C band. The thermal properties of the materials show that the degradative properties of the ZnO-NPs decrease the thermal stability. The morphological study by scanning electron microscopy (SEM) showed that the presence of TTEO and ZnO-NPs act synergistically, obtaining smooth surfaces, whereas membranes with the presence of ZnO-NPs or TTEO only show porous morphologies. Histological implantation of the membranes showed biocompatibility and biodegradability after 60 days of implantation. This degradation occurs through the fragmentation of the larger particles with the presence of connective tissue constituted by type III collagen fibers, blood vessels, and inflammatory cells, where the process of resorption of the implanted material continues.
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Affiliation(s)
- Carlos David Grande-Tovar
- Grupo de Investigación de Fotoquímica y Fotobiología, Universidad del Atlántico, Carrera 30 Número 8-49, Puerto Colombia 081008, Colombia
- Correspondence: (C.D.G.-T.); (M.N.C.); Tel.: +57-5-3599-484 (C.D.G.-T.)
| | - Jorge Iván Castro
- Laboratorio SIMERQO, Departamento de Química, Universidad del Valle, Calle 13 No. 100-00, Cali 76001, Colombia
| | | | - Diego López Tenorio
- Grupo Biomateriales Dentales, Escuela de Odontología, Universidad del Valle, Calle 4B # 36-00, Cali 76001, Colombia
| | - Marcela Saavedra
- Grupo de Polímeros, Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Santiago 9170020, Chile
| | - Paula A. Zapata
- Grupo de Polímeros, Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Santiago 9170020, Chile
| | - Manuel N. Chaur
- Laboratorio SIMERQO, Departamento de Química, Universidad del Valle, Calle 13 No. 100-00, Cali 76001, Colombia
- Correspondence: (C.D.G.-T.); (M.N.C.); Tel.: +57-5-3599-484 (C.D.G.-T.)
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5
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Kara Y, Molnár K. Decomposition Behavior of Stereocomplex PLA Melt-Blown Fine Fiber Mats in Water and in Compost. JOURNAL OF POLYMERS AND THE ENVIRONMENT 2022; 31:1398-1414. [PMID: 36465497 PMCID: PMC9703430 DOI: 10.1007/s10924-022-02694-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
UNLABELLED This study introduces systematic and comparative investigations of various PLA fine fiber mats prepared by melt blowing. A series of PLLA and PDLA melt-blown fibers from various L and D enantiomers blends were produced. Their morphological, mechanical, and thermal properties were studied, and their decomposition in water and compost was investigated. It was found that the 1:1 ratio blend with stereocomplex crystals had an 80% lower average fiber diameter, 60% higher specific strength and better thermal stability than the PLLA and PDLA fiber mats. In the case of composting, the crystalline peak melting temperature, crystallinity, and thermogravimetric decomposition temperatures marginally decreased after 14 days. The high surface of the fine fiber mats played a crucial role in fast decomposition, as they entirely disintegrated in less than only 40 days. In the case of water, the homocrystalline domains were more susceptible to hydrolysis than the stereocomplex ones. All the PLA fiber mats underwent decomposition and extensive disintegration for 70 days in water. Hydrolysis reduced the amorphous and crystalline fraction of the fibers via surface and bulk erosion, while the decomposition of stereocomplex-crystalline-rich domains mainly exhibited surface erosion. Findings revealed that high porosity and the high surface area of PLA melt-blown fine fiber mats undergo fast decomposition in compost and in water. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10924-022-02694-w.
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Affiliation(s)
- Yahya Kara
- Faculty of Mechanical Engineering, Department of Polymer Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111 Hungary
| | - Kolos Molnár
- Faculty of Mechanical Engineering, Department of Polymer Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, H-1111 Hungary
- MTA–BME Research Group for Composite Science and Technology, Műegyetem rkp. 3, Budapest, H- 1111 Hungary
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6
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Faba S, Arrieta MP, Agüero Á, Torres A, Romero J, Rojas A, Galotto MJ. Processing Compostable PLA/Organoclay Bionanocomposite Foams by Supercritical CO 2 Foaming for Sustainable Food Packaging. Polymers (Basel) 2022; 14:4394. [PMID: 36297972 PMCID: PMC9612032 DOI: 10.3390/polym14204394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 10/09/2022] [Accepted: 10/13/2022] [Indexed: 11/24/2022] Open
Abstract
This article proposes a foaming method using supercritical carbon dioxide (scCO2) to obtain compostable bionanocomposite foams based on PLA and organoclay (C30B) where this bionanocomposite was fabricated by a previous hot melt extrusion step. Neat PLA films and PLA/C30B films (1, 2, and 3 wt.%) were obtained by using a melt extrusion process followed by a film forming process obtaining films with thicknesses between 500 and 600 μm. Films were further processed into foams in a high-pressure cell with scCO2 under constant conditions of pressure (25 MPa) and temperature (130 °C) for 30 min. Bionanocomposite PLA foams evidenced a closed cell and uniform cell structure; however, neat PLA presented a poor cell structure and thick cell walls. The thermal stability was significantly enhanced in the bionanocomposite foam samples by the good dispersion of nanoclays due to scCO2, as demonstrated by X-ray diffraction analysis. The bionanocomposite foams showed improved overall mechanical performance due to well-dispersed nanoclays promoting increased interfacial adhesion with the polymeric matrix. The water uptake behavior of bionanocomposite foams showed that they practically did not absorb water during the first week of immersion in water. Finally, PLA foams were disintegrated under standard composting conditions at higher rates than PLA films, showing their sustainable character. Thus, PLA bionanocomposite foams obtained by batch supercritical foaming seem to be a sustainable option to replace non-biodegradable expanded polystyrene, and they represent a promising alternative to be considered in applications such as food packaging and other products.
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Affiliation(s)
- Simón Faba
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Marina P. Arrieta
- Departamento de Ingeniería Química Industrial y del Medio Ambiente, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), Calle José Gutiérrez Abascal 2, 28006 Madrid, Spain
- Grupo de Investigación: Polímeros, Caracterización y Aplicaciones (POLCA), 28006 Madrid, Spain
| | - Ángel Agüero
- Instituto de Tecnología de Materiales (ITM), Universidad Politécnica de Valencia (UPV), Plaza Ferrándiz y Carbonell 1, 03801 Alcoy, Spain
| | - Alejandra Torres
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Julio Romero
- Laboratory of Membrane Separation Processes (LabProSeM), Department of Chemical Engineering and Bioprocesses, Engineering Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Adrián Rojas
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - María José Galotto
- Packaging Innovation Center (LABEN), Department of Food Science and Technology, Faculty of Technology, Center for the Development of Nanoscience and Nanotechnology (CEDENNA), University of Santiago de Chile (USACH), Santiago 9170201, Chile
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7
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Babu NBK, Mensah RA, Shanmugam V, Rashedi A, Athimoolam P, Aseer JR, Das O. Self‐reinforced polymer composites: An opportunity to recycle plastic wastes and their future trends. J Appl Polym Sci 2022. [DOI: 10.1002/app.53143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- NB Karthik Babu
- Department of Mechanical Engineering, Assam Energy Institute A Centre of Rajiv Gandhi Institute of Petroleum Technology Sivasagar India
| | - Rhoda Afriyie Mensah
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering Luleå University of Technology Luleå Sweden
| | - Vigneshwaran Shanmugam
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering Luleå University of Technology Luleå Sweden
| | - Ahmad Rashedi
- School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore Singapore
| | - Pugazhenthi Athimoolam
- Department of Mechanical Engineering University College of Engineering Dindigul Dindigul India
| | - J. Ronald Aseer
- Department of Mechanical Engineering National Institute of Technology Puducherry Karaikal India
| | - Oisik Das
- Structural and Fire Engineering Division, Department of Civil, Environmental and Natural Resources Engineering Luleå University of Technology Luleå Sweden
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8
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Rapid biodegradation of high molecular weight semi-crystalline polylactic acid at ambient temperature via enzymatic and alkaline hydrolysis by a defined bacterial consortium. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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9
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Promnil S, Ruksakulpiwat C, Numpaisal PO, Ruksakulpiwat Y. Electrospun Poly(lactic acid) and Silk Fibroin Based Nanofibrous Scaffold for Meniscus Tissue Engineering. Polymers (Basel) 2022; 14:polym14122435. [PMID: 35746011 PMCID: PMC9231281 DOI: 10.3390/polym14122435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/06/2022] [Accepted: 06/13/2022] [Indexed: 11/23/2022] Open
Abstract
Biopolymer based scaffolds are commonly considered as suitable materials for medical application. Poly(lactic acid) (PLA) is one of the most popular polymers that has been used as a bioscaffold, but it has poor cell adhesion and slowly degrades in an in vitro environment. In this study, silk fibroin (SF) was selected to improve cell adhesion and degradability of electrospun PLA. In order to fabricate a PLA/SF scaffold that offered both biological and mechanical properties, related parameters such as solution viscosity and SF content were studied. By varying the concentration and molecular weight of PLA, the solution viscosity significantly changed. The effect of solution viscosity on the fiber forming ability and fiber morphology was elucidated. In addition, commercial (l-lactide, d-lactide PLA) and medical grade PLA (pure PLLA) were both investigated. Mechanical properties, thermal properties, biodegradability, wettability, cell viability, and gene expression of electrospun PLA and PLA/SF based nanofibrous scaffolds were examined. The results demonstrated that medical grade PLA electrospun scaffolds offered superior mechanical property, degradability, and cellular induction for meniscus tissue regeneration. However, for commercial non-medical grade PLA used in this study, it was not recommended to be used for medical application because of its toxicity. With the addition of SF in PLA based scaffolds, the in vitro degradability and hydrophilicity were improved. PLAmed50:SF50 scaffold has the potential to be used as biomimetic meniscus scaffold for scaffold augmented suture based on mechanical properties, cell viability, gene expression, surface wettability, and in vitro degradation.
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Affiliation(s)
- Siripanyo Promnil
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (S.P.); (C.R.)
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Chaiwat Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (S.P.); (C.R.)
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Piya-on Numpaisal
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- School of Orthopaedics, Institute of Medicine, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Correspondence: (P.-o.N.); (Y.R.); Tel.: +66-44-22-3917 (P.-o.N.); +66-44-22-3033 (Y.R.)
| | - Yupaporn Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (S.P.); (C.R.)
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Correspondence: (P.-o.N.); (Y.R.); Tel.: +66-44-22-3917 (P.-o.N.); +66-44-22-3033 (Y.R.)
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10
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Sepúlveda FA, Rivera F, Loyo C, Canales D, Moreno‐Serna V, Benavente R, Rivas LM, Ulloa MT, Gil‐Castell O, Ribes‐Greus A, Ortiz JA, Zapata PA. Poly (lactic acid)/D‐limonene/
ZnO bio‐nanocomposites
with antimicrobial properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.51542] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Francesca Antonella Sepúlveda
- Universidad de Santiago de Chile (USACH) Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Grupo Polímeros Chile
| | - Francisca Rivera
- Universidad de Santiago de Chile (USACH) Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Grupo Polímeros Chile
| | - Carlos Loyo
- Universidad de Santiago de Chile (USACH) Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Grupo Polímeros Chile
| | - Daniel Canales
- Universidad de Santiago de Chile (USACH) Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Grupo Polímeros Chile
| | - Viviana Moreno‐Serna
- Universidad de Santiago de Chile (USACH) Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Grupo Polímeros Chile
| | | | - Lina María Rivas
- Programa de Microbiología y Micología ICBM‐Facultad de Medicina Universidad de Chile Chile
| | - María Teresa Ulloa
- Programa de Microbiología y Micología ICBM‐Facultad de Medicina Universidad de Chile Chile
| | - Oscar Gil‐Castell
- Instituto de Tecnología de Materiales (ITM) Universitat Politècnica de València (UPV) Spain
| | - Amparo Ribes‐Greus
- Instituto de Tecnología de Materiales (ITM) Universitat Politècnica de València (UPV) Spain
| | - J. Andrés Ortiz
- Universidad de Santiago de Chile (USACH) Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Grupo Polímeros Chile
- Departamento de Ingeniería Química, Biotecnología y Materiales Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile Chile
| | - Paula A. Zapata
- Universidad de Santiago de Chile (USACH) Facultad de Química y Biología, Departamento de Ciencias del Ambiente, Grupo Polímeros Chile
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11
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Baidurah S, Kobayashi T, Aziz AA. PLA Based Plastics for Enhanced Sustainability of the Environment. ENCYCLOPEDIA OF MATERIALS: PLASTICS AND POLYMERS 2022:511-519. [DOI: 10.1016/b978-0-12-820352-1.00175-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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12
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Wettability, absorption and degradation behavior of microwave-assisted compression molded kenaf/HDPE composite tank under various environments. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109500] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Alberti C, Enthaler S. Depolymerization of End‐of‐Life Poly(lactide) to Lactide via Zinc‐Catalysis. ChemistrySelect 2020. [DOI: 10.1002/slct.202003979] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christoph Alberti
- Universität Hamburg Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
| | - Stephan Enthaler
- Universität Hamburg Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
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Cheung E, Alberti C, Enthaler S. Chemical Recycling of End-of-Life Poly(lactide) via Zinc-Catalyzed Depolymerization and Polymerization. ChemistryOpen 2020; 9:1224-1228. [PMID: 33304737 PMCID: PMC7705614 DOI: 10.1002/open.202000243] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/12/2020] [Indexed: 01/08/2023] Open
Abstract
The chemical recycling of poly(lactide) was investigated based on depolymerization and polymerization processes. Using methanol as depolymerization reagent and zinc salts as catalyst, poly(lactide) was depolymerized to methyl lactate applying microwave heating. An excellent performance was observed for zinc(II) acetate with turnover frequencies of up to 45000 h-1. In a second step the monomer methyl lactate was converted to (pre)poly(lactide) in the presence of catalytic amounts of zinc salts. Here zinc(II) triflate revealed excellent performance for the polymerization process (yield: 91 %, Mn ∼8970 g/mol). Moreover, the (pre)poly(lactide) was depolymerized to lactide, the industrial relevant molecule for accessing high molecular weight poly(lactide), using zinc(II) acetate as catalyst.
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Affiliation(s)
- Even Cheung
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 6D-20146HamburgGermany
| | - Christoph Alberti
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 6D-20146HamburgGermany
| | - Stephan Enthaler
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 6D-20146HamburgGermany
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Alberti C, Kricheldorf HR, Enthaler S. Application of Bismuth Catalysts for the Methanolysis of End‐of‐Life Poly(lactide). ChemistrySelect 2020. [DOI: 10.1002/slct.202003389] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Christoph Alberti
- Universität Hamburg Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
| | - Hans Rytger Kricheldorf
- Universität Hamburg Institut für Technische und Makromolekulare Chemie Bundesstr. 45 D-20146 Hamburg Germany
| | - Stephan Enthaler
- Universität Hamburg Institut für Anorganische und Angewandte Chemie Martin-Luther-King-Platz 6 D-20146 Hamburg Germany
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16
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Influence of substrate and temperature on the biodegradation of polyester-based materials: Polylactide and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) as model cases. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109288] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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Kindler T, Alberti C, Fedorenko E, Santangelo N, Enthaler S. Ruthenium-Catalyzed Hydrogenative Degradation of End-of-Life Poly(lactide) to Produce 1,2-Propanediol as Platform Chemical. ChemistryOpen 2020; 9:401-404. [PMID: 32257748 PMCID: PMC7110137 DOI: 10.1002/open.202000050] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/06/2020] [Indexed: 11/18/2022] Open
Abstract
The chemical recycling of end-of-life polymers can add some value to a future circular economy. In this regard, the hydrogenative degradation of end-of-life PLA was investigated to produce 1,2-propanediol as product, which is a useful building block in polymer chemistry. In more detail, the commercially available Ru-MACHO-BH complex was applied as catalyst to degrade end-of-life PLA efficiently to 1,2-propanediol under mild conditions. After investigations of the reaction conditions a set of end-of-life PLA goods were subjected to degradation.
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Affiliation(s)
- Tim‐Oliver Kindler
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 620146HamburgGermany
| | - Christoph Alberti
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 620146HamburgGermany
| | - Elena Fedorenko
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 620146HamburgGermany
| | - Nicolo Santangelo
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 620146HamburgGermany
| | - Stephan Enthaler
- Universität HamburgInstitut für Anorganische und Angewandte ChemieMartin-Luther-King-Platz 620146HamburgGermany
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Hofmann M, Alberti C, Scheliga F, Meißner RRR, Enthaler S. Tin(ii) 2-ethylhexanoate catalysed methanolysis of end-of-life poly(lactide). Polym Chem 2020. [DOI: 10.1039/d0py00292e] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The depolymerisation of end-of-life poly(lactide) (PLA) goods was studied as part of the chemical recycling of PLA.
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Affiliation(s)
- Melanie Hofmann
- Universität Hamburg
- Institut für Anorganische und Angewandte Chemie
- D-20146 Hamburg
- Germany
| | - Christoph Alberti
- Universität Hamburg
- Institut für Anorganische und Angewandte Chemie
- D-20146 Hamburg
- Germany
| | - Felix Scheliga
- Universität Hamburg
- Institut für Technische und Makromolekulare Chemie
- Universität Hamburg
- D-20146 Hamburg
- Germany
| | - Roderich R. R. Meißner
- Universität Hamburg
- Institut für Anorganische und Angewandte Chemie
- D-20146 Hamburg
- Germany
| | - Stephan Enthaler
- Universität Hamburg
- Institut für Anorganische und Angewandte Chemie
- D-20146 Hamburg
- Germany
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Alberti C, Damps N, Meißner RRR, Enthaler S. Depolymerization of End‐of‐Life Poly(lactide) via 4‐Dimethylaminopyridine‐Catalyzed Methanolysis. ChemistrySelect 2019. [DOI: 10.1002/slct.201901316] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Christoph Alberti
- Institut für Anorganische und Angewandte ChemieUniversität Hamburg Martin-Luther-King-Platz 6, D– 20146 Hamburg Germany
| | - Nicole Damps
- Institut für Anorganische und Angewandte ChemieUniversität Hamburg Martin-Luther-King-Platz 6, D– 20146 Hamburg Germany
| | - Roderich R. R. Meißner
- Institut für Anorganische und Angewandte ChemieUniversität Hamburg Martin-Luther-King-Platz 6, D– 20146 Hamburg Germany
| | - Stephan Enthaler
- Institut für Anorganische und Angewandte ChemieUniversität Hamburg Martin-Luther-King-Platz 6, D– 20146 Hamburg Germany
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