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Yang J, Liu X, Zhao J, Pu X, Shen Z, Xu W, Liu Y. The Structural Evolution of β-to- α Phase Transition in the Annealing Process of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Polymers (Basel) 2023; 15:polym15081921. [PMID: 37112068 PMCID: PMC10143349 DOI: 10.3390/polym15081921] [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: 03/07/2023] [Revised: 04/02/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
In this study, the structural and property changes induced in the highly ordered structure of preoriented poly(3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV films containing the β-form during annealing were investigated. The transformation of the β-form was investigated by means of in situ wide-angle X-ray diffraction (WAXD) using synchrotron X-rays. The comparison of PHBV films with the β-form before and after annealing was performed using small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The evolution mechanism of β-crystal transformation was elucidated. It was revealed that most of the highly oriented β-form directly transforms into the highly oriented α-form, and there might be two kinds of transformations: (1) The β-crystalline bundles may be transformed one by one rather than one part by one part during annealing before a certain annealing time. (2) The β-crystalline bundles crack or the molecular chains of the β-form are separated from the lateral side after annealing after a certain annealing time. A model to describe the microstructural evolution of the ordered structure during annealing was established based on the results obtained.
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Affiliation(s)
- Jian Yang
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Xianggui Liu
- Guangdong Huatong New Material Technology Co., Ltd., Dongguan 523591, China
| | - Jinxing Zhao
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Xuelian Pu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Zetong Shen
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Weiyi Xu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Yuejun Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
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Yang J, Zhu H, Zhao Y, Jiang Q, Chen H, Liu G, Chen P, Wang D. New insights into the beta-form crystal toughening mechanism in pre-oriented PHBV films. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.03.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Marega C, Marigo A. Effect of electrospun fibers of polyhydroxybutyrate filled with different organoclays on morphology, biodegradation, and thermal stability of poly(ε-caprolattone). J Appl Polym Sci 2015. [DOI: 10.1002/app.42342] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Carla Marega
- Dipartimento di Scienze Chimiche; Università di Padova; via Marzolo 1 I-35131 Padova Italy
| | - Antonio Marigo
- Dipartimento di Scienze Chimiche; Università di Padova; via Marzolo 1 I-35131 Padova Italy
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Shishatskaya EI, Volova TG, Gordeev SA, Puzyr AP. Degradation of P(3HB) and P(3HB-co-3HV) in biological media. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 16:643-57. [PMID: 16001722 DOI: 10.1163/1568562053783678] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The biodegradability of oriented fibers made of polyhydroxybutyrate (P(3HB)) and its co-polymer with beta-hydroxyvalerate (P(3HB-co-3HV)) was investigated in buffer solutions and in biological media in vitro and in vivo. The fibers of both polymer types demonstrated resistance to hydrolytic degradation in buffer solutions at 38 degrees C and pH from 4.5 to 7.0 (for up to 180 days). It has been found that the biodegradation of the fibers in vitro in blood and serum and in vivo is accompanied by weight losses and minor changes in the microstructure with no significant losses in the tensile strength over a long time (up to 180 days). The biodegradation rate of the less crystalline co-polymer P(3HB-co-3HV) fibers was 1.4-2.0-times higher than that of the homopolymer P(3HB). It has also been shown that the degradation of the fibers in vivo is influenced both by tissue fluid enzymes and cells (macrophages and foreign-body giant cells). The fibers were eroded on the surface only with no gross defects and no dramatic effects on their mechanical performance.
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Affiliation(s)
- E I Shishatskaya
- Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 60036, Russia
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Orts WJ, Nobes GA, Kawada J, Nguyen S, Yu GE, Ravenelle F. Poly(hydroxyalkanoates): Biorefinery polymers with a whole range of applications. The work of Robert H. Marchessault. CAN J CHEM 2008. [DOI: 10.1139/v08-050] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This review describes the characterization and application of poly(hydroxyalkanoates), PHAs, a remarkable family of natural polyesters with a wide array of useful properties and potential applications. It places specific emphasis on the work of Robert H. Marchessault and his many colleagues outlining how Marchessault’s body of work both shaped the field and complemented the work of his contemporaries. Particular attention will focus on the “rediscovery” of poly(β-hydroxybutyrate), PHB, the first PHA to be discovered, from the late 1950s onward, highlighting some of the historical aspects of PHA’s path toward commercial applications. It will also cover why this class of materials is so unique, including PHA structure–properties relationships, its unique crystalline behaviour, in vivo – in vitro synthesis and degradation, and PHA-graft-copolymers.Key words: poly(hydroxyalkanoate), PHA, poly(β-hydroxybutyrate), PHB, biopolymers, bacterial polyester, random copolymers, polymer single crystals, graft copolymers.
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Misra SK, Nazhat SN, Valappil SP, Moshrefi-Torbati M, Wood RJK, Roy I, Boccaccini AR. Fabrication and Characterization of Biodegradable Poly(3-hydroxybutyrate) Composite Containing Bioglass. Biomacromolecules 2007; 8:2112-9. [PMID: 17530893 DOI: 10.1021/bm0701954] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bacterially derived poly(3-hydroxybutyrate) (P(3HB)) has been used to produce composite films by incorporating Bioglass particles (<5 microm) in 5 and 20 wt % concentrations. P(3HB) was produced using a large scale fermentation technique. The polymer was extracted using the Soxhlet technique and was found to have similar thermal and structural properties to the commercially available P(3HB). The effects of adding Bioglass on the microstructure surface and thermal and mechanical properties were examined using differential scanning calorimetry, dynamic mechanical analysis (DMA), X-ray diffraction, surface interferometry, electron microscopy, and nanoindentation. The addition of increasing concentrations of Bioglass in the polymer matrix reduced the degree of crystallinity of the polymer as well as caused an increase in the glass transition temperature as determined by DMA. The presence of Bioglass particulates reduced the Young's modulus of the composite. The storage modulus and the loss modulus, however, increased with the addition of 20 wt % Bioglass. A short period (28 days) in vitro bioactivity study in simulated body fluid confirmed the bioactivity of the composites, demonstrated by the formation of hydroxyapatite crystals on the composites' surface.
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Affiliation(s)
- Superb K Misra
- Department of Materials, Imperial College London, London, UK
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Furuhashi Y, Imamura Y, Jikihara Y, Yamane H. Higher order structures and mechanical properties of bacterial homo poly(3-hydroxybutyrate) fibers prepared by cold-drawing and annealing processes. POLYMER 2004. [DOI: 10.1016/j.polymer.2004.05.069] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Schmack G, Kramer S, Dorschner H, Gliesche K. Effect of electron irradiation on the properties of poly(3-hydroxybutyric acid) fibres and their in vitro degradation. Polym Degrad Stab 2004. [DOI: 10.1016/j.polymdegradstab.2003.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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