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Amabile C, Abate T, Muñoz R, Chianese S, Musmarra D. Production of poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from methane and volatile fatty acids: properties, metabolic routes and current trend. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172138. [PMID: 38582106 DOI: 10.1016/j.scitotenv.2024.172138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/21/2024] [Accepted: 03/30/2024] [Indexed: 04/08/2024]
Abstract
Polyhydroxyalkanoates (PHAs) are biobased and biodegradable polymers that could effectively replace fossil-based and non-biodegradable plastics. However, their production is currently limited by the high production costs, mainly due to the costly carbon sources used, low productivity and quality of the materials produced. A potential solution lies in utilizing cheap and renewable carbon sources as the primary feedstock during the biological production of PHAs, paving the way for a completely sustainable and economically viable process. In this review, the opportunities and challenges related to the production of polyhydroxyalkanoates using methane and volatile fatty acids (VFAs) as substrates were explored, with a focus on poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate). The discussion reports the current knowledge about promising Type II methanotrophs, the impact of process parameters such as limiting nutrients, CH4:O2 ratio and temperature, the type of co-substrate and its concentration. Additionally, the strategies developed until now to enhance PHA production yields were also discussed.
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Affiliation(s)
- Claudia Amabile
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy; Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain
| | - Teresa Abate
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy; Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain
| | - Raul Muñoz
- Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina, s/n, 47011 Valladolid, Spain
| | - Simeone Chianese
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy.
| | - Dino Musmarra
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy
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2
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Patel KG, Maynard RK, Ferguson LS, Broich ML, Bledsoe JC, Wood CC, Crane GH, Bramhall JA, Rust JM, Williams-Rhaesa A, Locklin JJ. Experimentally Determined Hansen Solubility Parameters of Biobased and Biodegradable Polyesters. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2024; 12:2386-2393. [PMID: 38362530 PMCID: PMC10865435 DOI: 10.1021/acssuschemeng.3c07284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 02/17/2024]
Abstract
Hansen solubility parameters (HSP) of 15 commercially relevant biobased and biodegradable polyesters were experimentally determined by applying a novel approach to the classic solubility study method. In this approach, the extent of swelling in polymer films was determined using a simple equation based on the mass difference between swollen and nonswollen film samples to obtain normalized solvent uptake (N). Using N and HSPiP software, highly accurate HSP values were obtained for all 15 polyesters. Qualitative evaluation of the HSP values was conducted by predicting the miscibility of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHB-co-HHx, 7 mol % HHx) and poly(lactic acid) (PLA) with a novel lignin-based plasticizer (ethyl 3-(4-ethoxy-3-methoxyphenyl)propanoate, EP) with a relative energy difference (RED) less than 0.4. Additionally, an HSP-predicted plasticizer (di(2-ethylhexyl) adipate, DA) with a larger RED (>0.7) was used to demonstrate the effects of less-miscible additives. Plasticized samples were analyzed by differential scanning calorimetry and polarized optical microscopy (POM) to determine the Tg depression, with EP showing linear Tg depression up to 50% plasticizer loading, whereas DA shows minimal Tg depression past 10% loading. Further analysis by POM reveals that the DA phase separates from both polymers at loadings as low as 2.5% (PHB-co-HHx, 7 mol % HHx) and 5% (PLA), while the EP phase separates at a much higher loading of 50% (PHB-co-HHx, 7 mol% HHx) and 30% (PLA).
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Affiliation(s)
- Kush G. Patel
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, 597 D.W. Brooks Dr., Athens, Georgia 30602, United States
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Ryan K. Maynard
- Department
of Chemistry, Franklin College of Arts and Sciences, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Lawrence S. Ferguson
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Michael L. Broich
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, 597 D.W. Brooks Dr., Athens, Georgia 30602, United States
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Joshua C. Bledsoe
- Department
of Chemistry, Franklin College of Arts and Sciences, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Caitlin C. Wood
- Department
of Chemistry, Franklin College of Arts and Sciences, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Grant H. Crane
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Jessica A. Bramhall
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Jonathan M. Rust
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Amanda Williams-Rhaesa
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
| | - Jason J. Locklin
- School
of Chemical, Materials, and Biomedical Engineering, College of Engineering, University of Georgia, 597 D.W. Brooks Dr., Athens, Georgia 30602, United States
- Department
of Chemistry, Franklin College of Arts and Sciences, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States
- New
Materials Institute, University of Georgia, 220 Riverbend R., Athens, Georgia 30602, United States
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3
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Bernabé I, Amarilla E, de la Orden MU, Martínez Urreaga J, Beltrán FR. Effect of oligomeric lactic acid plasticizer on the mechanical recycling of poly(3-hydroxybutyrate-co-3-hydroxyvalerate). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-023-31758-0. [PMID: 38214860 DOI: 10.1007/s11356-023-31758-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/23/2023] [Indexed: 01/13/2024]
Abstract
Bioplastics such as polyhydroxyalkanoates (PHA) emerge as an interesting alternative to conventional fossil fuel-based plastics and as part of the solution their associated environmental issues. Nevertheless, end-of-life scenarios are still a major concern, especially within a circular economy framework. When feasible, mechanical recycling appears as the best alternative, since it saves raw materials and energy. However, the viability of mechanical recycling can be compromised by the degradation of the plastic during its use and during the recycling process and by the presence of certain additives. Consequently, the main objective of this work is to study the effect of accelerated ageing and mechanical recycling on the structure and properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)-based formulations. The obtained results suggest that accelerated ageing and mechanical recycling led only to a slight degradation of the pure PHBV material, along with small variations in the thermal and mechanical properties. However, the plasticized PHBV formulations showed a more severe degradation and increased thermal stability and stiffness, which could be result of the elimination of the plasticizer during the recycling. Overall, mechanical recycling seems to be an interesting valorization strategy for PHBV wastes, although especial attention should be paid to the additives present in the materials.
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Affiliation(s)
- Ignacio Bernabé
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain
| | - Erika Amarilla
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain
| | - María Ulagares de la Orden
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain
- Departamento Química Orgánica I, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037, Madrid, Spain
| | - Joaquín Martínez Urreaga
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain
| | - Freddys R Beltrán
- Departamento de Ingeniería Química Industrial y Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006, Madrid, Spain.
- Research Group: "Polímeros, Caracterización y Aplicaciones (POLCA)", 28006, Madrid, Spain.
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4
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Talaniuk V, Godzierz M, Vashchuk A, Iurhenko M, Chaber P, Sikorska W, Kobyliukh A, Demchenko V, Rogalsky S, Szeluga U, Adamus G. Development of Polyhydroxybutyrate-Based Packaging Films and Methods to Their Ultrasonic Welding. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6617. [PMID: 37895599 PMCID: PMC10608075 DOI: 10.3390/ma16206617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/06/2023] [Accepted: 10/08/2023] [Indexed: 10/29/2023]
Abstract
This study developed a technical task associated with the formation of welded joints based on biodegradable polymers and their subsequent physicochemical characterization. The primary objective was to establish the effect of the welding process and modification of natural poly(3-hydroxybutyrate) (PHB) with N,N-dibutylundecenoylamide (DBUA) as a plasticizing agent on the structure and properties of PHB-based biopolymer materials as well as the process and structure of welded joints formation using ultrasonic welding technique. The weldability of biodegradable layers based on PHB and PHB/DBUA mixture was ultrasonically welded and optimized using a standard Branson press-type installation. The effect of the DBUA plasticizer and welding process on the structure of PHB-based biodegradable material was investigated using scanning electron microscopy, X-ray diffraction, FT-IR spectroscopy, differential scanning calorimetry, and thermomechanical analysis. The results confirmed that the DBUA acted as an effective plasticizer of PHB, contributing to lower crystallinity of the PHB/DBUA mixture (63%) in relation to the crystallinity degree of pure PHB film (69%). Ultrasonic welding resulted in an additional increase (approximately 8.5%) in the degree of crystallinity in the PHB/DBUA in relation to the initial PHB/DBUA mixture. The significant shift toward lower temperatures of the crystallization and melting peaks of PHB modified with DBUA were observed using DSC concerning pure PHB. The melt crystallization process of PHB was affected by welding treatment, and a shift toward higher temperature was observed compared with the unwelded PHB/DBUA sample. The butt-welded joints of biodegradable PHB/DBUA materials made using the ultrasonic method tested for tensile strength have damaged the area immediately outside the joining surface.
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Affiliation(s)
- Viktoriia Talaniuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowska Str. 34, 41-819 Zabrze, Poland; (M.G.); (P.C.); (W.S.); (A.K.); (U.S.)
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych St., 03680 Kyiv, Ukraine; (A.V.); (M.I.); (V.D.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
| | - Marcin Godzierz
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowska Str. 34, 41-819 Zabrze, Poland; (M.G.); (P.C.); (W.S.); (A.K.); (U.S.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
| | - Alina Vashchuk
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych St., 03680 Kyiv, Ukraine; (A.V.); (M.I.); (V.D.)
| | - Maksym Iurhenko
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych St., 03680 Kyiv, Ukraine; (A.V.); (M.I.); (V.D.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
| | - Paweł Chaber
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowska Str. 34, 41-819 Zabrze, Poland; (M.G.); (P.C.); (W.S.); (A.K.); (U.S.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
| | - Wanda Sikorska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowska Str. 34, 41-819 Zabrze, Poland; (M.G.); (P.C.); (W.S.); (A.K.); (U.S.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
| | - Anastasiia Kobyliukh
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowska Str. 34, 41-819 Zabrze, Poland; (M.G.); (P.C.); (W.S.); (A.K.); (U.S.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
| | - Valeriy Demchenko
- E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11. Kazymyr Malevych St., 03680 Kyiv, Ukraine; (A.V.); (M.I.); (V.D.)
| | - Sergiy Rogalsky
- Laboratory of Modification Polymers, V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of NAS of Ukraine, 50, Kharkivskie Schose, 02160 Kyiv, Ukraine;
| | - Urszula Szeluga
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowska Str. 34, 41-819 Zabrze, Poland; (M.G.); (P.C.); (W.S.); (A.K.); (U.S.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
| | - Grażyna Adamus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowska Str. 34, 41-819 Zabrze, Poland; (M.G.); (P.C.); (W.S.); (A.K.); (U.S.)
- International Polish-Ukrainian Research Laboratory ADPOLCOM, 41-800 Zabrze, Poland
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5
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Žiganova M, Merijs-Meri R, Zicāns J, Bochkov I, Ivanova T, Vīgants A, Ence E, Štrausa E. Visco-Elastic and Thermal Properties of Microbiologically Synthesized Polyhydroxyalkanoate Plasticized with Triethyl Citrate. Polymers (Basel) 2023; 15:2896. [PMID: 37447541 DOI: 10.3390/polym15132896] [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: 04/20/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
The current research is devoted to the investigation of the plasticization of polyhydroxybutyrate (PHB) and polyhydroxybutyrate-co-hydroxyvalerate (PHBV) with triethyl citrate (TEC). Three different PHB or PHBV-based systems with 10, 20, and 30 wt.% of TEC were prepared by two-roll milling. The effect of TEC on the rheological, thermal, mechanical, and calorimetric properties of the developed compression-molded PHB and PHBV-based systems was determined. It was revealed that the addition of TEC significantly influenced the melting behavior of both polyhydroxyalkanoates (PHA), reducing their melting temperatures and decreasing viscosities. It was also revealed that all the investigated systems demonstrated less than 2% weight loss until 200 °C and rapid degradation did not occur until 240-260 °C in an oxidative environment. Apart from this, a remarkable increase (ca 2.5 times) in ultimate tensile deformation εB was observed by increasing the amount of TEC in either PHB or PHBV. A concomitant, considerable drop in ultimate strength σB and modulus of elasticity E was observed. Comparatively, the plasticization efficiency of TEC was greater in the case of PHBV.
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Affiliation(s)
- Madara Žiganova
- Institute of Polymer Materials, Faculty of Materials Science and Applied Chemistry, Riga Technical University, 3 Paula Valdena Street, LV-1048 Riga, Latvia
| | - Remo Merijs-Meri
- Institute of Polymer Materials, Faculty of Materials Science and Applied Chemistry, Riga Technical University, 3 Paula Valdena Street, LV-1048 Riga, Latvia
| | - Jānis Zicāns
- Institute of Polymer Materials, Faculty of Materials Science and Applied Chemistry, Riga Technical University, 3 Paula Valdena Street, LV-1048 Riga, Latvia
| | - Ivan Bochkov
- Institute of Polymer Materials, Faculty of Materials Science and Applied Chemistry, Riga Technical University, 3 Paula Valdena Street, LV-1048 Riga, Latvia
| | - Tatjana Ivanova
- Institute of Polymer Materials, Faculty of Materials Science and Applied Chemistry, Riga Technical University, 3 Paula Valdena Street, LV-1048 Riga, Latvia
| | - Armands Vīgants
- Laboratory of Bioconversion of Carbohydrates, University of Latvia, 1 Jelgavas Street, LV-1050 Riga, Latvia
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6
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Chang YS, Kumari P, Munro CJ, Szekely G, Vega LF, Nunes S, Dumée LF. Plasticization mitigation strategies for gas and liquid filtration membranes - A review. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2022.121125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Turco R, Corrado I, Zannini D, Gargiulo L, Di Serio M, Pezzella C, Santagata G. Upgrading cardoon biomass into Polyhydroxybutyrate based blends: A holistic approach for the synthesis of biopolymers and additives. BIORESOURCE TECHNOLOGY 2022; 363:127954. [PMID: 36108577 DOI: 10.1016/j.biortech.2022.127954] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 06/15/2023]
Abstract
Cardoon, Cynara cardunculus L. represents a biorefinery crop with a great potential in the bioplastic field. This work investigates the valorization of different cardoon components into high added value products, finally recombined into novel upgraded bioplastics. Bioprocesses for Polyhydroxybutyrate (PHB) and medium-chain-length Polyhydroxyalkanoates (mcl-PHA) production were set up starting from root inulin and seed oil respectively, highlighting the effect of process conditions on polymer properties. The ternary blend, in which the PHB polymer matrix was added with mcl-PHA and epoxidized cardoon oil, evidenced a synergic effect of both additives in modulating PHB structural and thermal properties, promoted by the physical interaction occurring among the components. This proof-of concept frames the paper in the holistic approach of circular economy applied to bioplastic production.
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Affiliation(s)
- Rosa Turco
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, 80126 Napoli, Italy; Institute for Polymers, Composites and Biomaterials, National Council of Research, Via Campi Flegrei 34, 80078 Pozzuoli, Italy
| | - Iolanda Corrado
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, 80126 Napoli, Italy
| | - Domenico Zannini
- Institute for Polymers, Composites and Biomaterials, National Council of Research, Via Campi Flegrei 34, 80078 Pozzuoli, Italy
| | - Luca Gargiulo
- Institute for Polymers, Composites and Biomaterials, National Council of Research, Via Campi Flegrei 34, 80078 Pozzuoli, Italy
| | - Martino Di Serio
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, 80126 Napoli, Italy
| | - Cinzia Pezzella
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, 80126 Napoli, Italy.
| | - Gabriella Santagata
- Institute for Polymers, Composites and Biomaterials, National Council of Research, Via Campi Flegrei 34, 80078 Pozzuoli, Italy
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8
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PHB Processability and Property Improvement with Linear-Chain Polyester Oligomers Used as Plasticizers. Polymers (Basel) 2022; 14:polym14194197. [PMID: 36236144 PMCID: PMC9573169 DOI: 10.3390/polym14194197] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/01/2022] [Accepted: 10/02/2022] [Indexed: 11/05/2022] Open
Abstract
In 2021, global petroleum-based plastic production reached over 400 million metric tons (Mt), and the accumulation of these non-biodegradable plastics in the environment is a worldwide concern. Polyhydroxybutyrate (PHB) offers many advantages over traditional petroleum-based plastics, being biobased, completely biodegradable, and non-toxic. However, its production and use are still challenging due to its low deformation capacity and narrow processing window. In this work, two linear-chain polyester oligomers were used as plasticizers to improve the processability and properties of PHB. Thermal analyses, XRD, and polarized optical microscopy were performed to evaluate the plasticizing effect on the PHB and the reflection on the mechanical behavior. Both oligomers acted as PHB plasticizers, with a reduction in Tg and Tm as a function of the plasticizer concentration, which can make it easier to handle the material in thermal processing and reduce the probability of thermal degradation. Plasticizer 2 proved to be the most promising between the two with an optimized condition of 20%, in which there was a decrease in elastic modulus of up to 72% and an increase in the maximum elongation of 467%.
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9
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Innovative solutions and challenges to increase the use of Poly(3-hydroxybutyrate) in food packaging and disposables. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Aliotta L, Gigante V, Lazzeri A. Analytical Modeling of Stress Relaxation and Evaluation of the Activation Volume Variation: Effect of Temperature and Plasticizer Content for Poly(3-hydroxybutyrate-3-hydroxyvalerate). ACS OMEGA 2022; 7:23662-23672. [PMID: 35847325 PMCID: PMC9280768 DOI: 10.1021/acsomega.2c02284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this study, stress-relaxation tests that have been carried out at different temperatures (quite below the heat deflection temperature) on a poly(3-hydroxybutyrate-3hydroxyvalerate) (PHB-HV) matrix containing different amounts of the acetyl tributyl citrate plasticizer (added at 5 and 10 wt %) are investigated. The analytical modeling of the stress relaxation behavior by the coupling of Eyring's approach and the Guiu and Pratt model is successful. The activation volume results achieved are very interesting; in fact, not only the dependence of the activation volume from temperature is confirmed (and it resulted in dependence from the α' relaxation temperature) but also, for the first time, the dependence of the activation volume from the plasticizer content is shown. In particular, the presence of a linear relationship between the activation volume and the plasticizer volume content is observed.
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Affiliation(s)
- Laura Aliotta
- University
of Pisa, Department of Civil and Industrial Engineering, Via Diotisalvi, 2, Pisa 56122, Italy
- Interuniversity
National Consortium of Materials Science and Technology (INSTM), Via Giusti 9, Florence 50121, Italy
| | - Vito Gigante
- University
of Pisa, Department of Civil and Industrial Engineering, Via Diotisalvi, 2, Pisa 56122, Italy
- Interuniversity
National Consortium of Materials Science and Technology (INSTM), Via Giusti 9, Florence 50121, Italy
| | - Andrea Lazzeri
- University
of Pisa, Department of Civil and Industrial Engineering, Via Diotisalvi, 2, Pisa 56122, Italy
- Interuniversity
National Consortium of Materials Science and Technology (INSTM), Via Giusti 9, Florence 50121, Italy
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11
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Ferrão V, Bortoloni Perin G, Felisberti MI. Green composites of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) and sugarcane bagasse fibers plasticized with triethyl citrate: Thermal, mechanical and morphological properties. J Appl Polym Sci 2022. [DOI: 10.1002/app.52782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Victor Ferrão
- Institute of Chemistry University of Campinas Campinas Brazil
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12
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Voronova MI, Gurina DL, Surov OV. Properties of Poly(3-hydroxybutyrate- co-3-hydroxyvalerate)/Polycaprolactone Polymer Mixtures Reinforced by Cellulose Nanocrystals: Experimental and Simulation Studies. Polymers (Basel) 2022; 14:340. [PMID: 35054746 PMCID: PMC8780583 DOI: 10.3390/polym14020340] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/05/2022] [Accepted: 01/12/2022] [Indexed: 02/05/2023] Open
Abstract
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/polycaprolactone (PHBV/PCL) polymer mixtures reinforced by cellulose nanocrystals (CNCs) have been obtained. To improve the CNC compatibility with the hydrophobic PHBV/PCL matrix, the CNC surface was modified by amphiphilic polymers, i.e., polyvinylpyrrolidone (PVP) and polyacrylamide (PAM). The polymer composites were characterized by FTIR, DSC, TG, XRD, microscopy, BET surface area, and tensile testing. The morphological, sorption, thermal, and mechanical properties of the obtained composites have been studied. It was found out that with an increase in the CNC content in the composites, the porosity of the films increased, which was reflected in an increase in their specific surface areas and water sorption. An analysis of the IR spectra confirms that hydrogen bonds can be formed between the CNC hydroxyl- and the -CO- groups of PCL and PHBV. The thermal decomposition of CNC in the PHBV/PCL/CNC composites starts at a much higher temperature than the decomposition of pure CNC. It was revealed that CNCs can either induce crystallization and the polymer crystallite growth or act as a compatibilizer of a mixture of the polymers causing their amorphization. The CNC addition significantly reduces the elongation and strength of the composites, but changes Young's modulus insignificantly, i.e., the mechanical properties of the composites are retained under conditions of small linear deformations. A molecular-dynamics simulation of several systems, starting from simplest binary (solvent-polymer) and finishing with multi-component (CNC-polymer mixture-solvent) systems, has been made. It is concluded that the surface modification of CNCs with amphiphilic polymers makes it possible to obtain the CNC composites with hydrophobic polymer matrices.
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Affiliation(s)
| | | | - Oleg V. Surov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya St., 153045 Ivanovo, Russia; (M.I.V.); (D.L.G.)
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Mitra R, Xiang H, Han J. Current Advances towards 4-Hydroxybutyrate Containing Polyhydroxyalkanoates Production for Biomedical Applications. Molecules 2021; 26:molecules26237244. [PMID: 34885814 PMCID: PMC8659255 DOI: 10.3390/molecules26237244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/19/2021] [Accepted: 11/27/2021] [Indexed: 02/05/2023] Open
Abstract
Polyhydroxyalkanoates (PHA) are polyesters having high promise in biomedical applications. Among different types of PHA, poly-4-hydroxybutyrate (P4HB) is the only polymer that has received FDA approval for medical applications. However, most PHA producing microorganisms lack the ability to synthesize P4HB or PHA comprising 4-hydroxybutyrate (4HB) monomer due to their absence of a 4HB monomer supplying pathway. Thus, most microorganisms require supplementation of 4HB precursors to synthesize 4HB polymers. However, usage of 4HB precursors incurs additional production cost. Therefore, researchers have adopted strategies to reduce the cost, such as utilizing low-cost substrate as well as constructing 4HB monomer supplying pathways in microorganisms. We herein summarize the biomedical applications of P4HB, the natural producers of 4HB polymer, and the various strategies that have been applied in producing 4HB polymers in non-4HB producing microorganisms. It is expected that the readers would gain a vivid idea on the different strategic developments in the field of 4HB polymer production.
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Affiliation(s)
- Ruchira Mitra
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China;
- International College, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hua Xiang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China;
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (H.X.); (J.H.)
| | - Jing Han
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China;
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (H.X.); (J.H.)
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What Is New in the Field of Industrial Wastes Conversion into Polyhydroxyalkanoates by Bacteria? Polymers (Basel) 2021; 13:polym13111731. [PMID: 34073198 PMCID: PMC8199472 DOI: 10.3390/polym13111731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 02/05/2023] Open
Abstract
The rising global consumption and industrialization has resulted in increased food processing demand. Food industry generates a tremendous amount of waste which causes serious environmental issues. These problems have forced us to create strategies that will help to reduce the volume of waste and the contamination to the environment. Waste from food industries has great potential as substrates for value-added bioproducts. Among them, polyhydroxyalkanaotes (PHAs) have received considerable attention in recent years due to their comparable characteristics to common plastics. These biodegradable polyesters are produced by microorganisms during fermentation processes utilizing various carbon sources. Scale-up of PHA production is limited due to the cost of the carbon source metabolized by the microorganisms. Therefore, there is a growing need for the development of novel microbial processes using inexpensive carbon sources. Such substrates could be waste generated by the food industry and food service. The use of industrial waste streams for PHAs biosynthesis could transform PHA production into cheaper and more environmentally friendly bioprocess. This review collates in detail recent developments in the biosynthesis of various types of PHAs produced using waste derived from agrofood industries. Challenges associated with this production bioprocess were described, and new ways to overcome them were proposed.
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