1
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Klimczuk B, Rudnicka A, Owczarek O, Puszkarz AK, Szparaga G, Puchalski M. Investigation of the Hydrolytic Degradation Kinetics of 3D-Printed PLA Structures under a Thermally Accelerated Regime. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1043. [PMID: 38473515 DOI: 10.3390/ma17051043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024]
Abstract
The application of biobased and biodegradable polymers, such as polylactide (PLA), in fused deposition modeling (FDM) 3D-printing technology creates a new prospect for rapid prototyping and other applications in the context of ecology. The popularity of the FDM method and its significance in material engineering not only creates new prospects for the development of technical sciences on an industrial scale, but also introduces new technologies into households. In this study, the kinetics of the hydrolytic degradation of samples obtained by the FDM method from commercially available PLA filaments under a thermally accelerated regime were analyzed. The investigation was conducted at the microstructural, supramolecular, and molecular levels by using methods such as micro-computed tomography (micro-CT), wide-angle X-ray diffraction (WAXD), viscosimetry, and mass erosion measurements. The obtained results clearly present the rapid structural changes in 3D-printed materials during degradation due to their amorphous initial structure. The complementary studies carried out at different scale levels allowed us to demonstrate the relationship between the observed structural changes in the samples and the hydrolytic decomposition of the polymer chains, which made it possible to scientifically understand the process and expand the knowledge on biodegradation.
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Affiliation(s)
- Bartłomiej Klimczuk
- ECOResearch Student Research Group, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland
| | - Aleksandra Rudnicka
- ECOResearch Student Research Group, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland
| | - Oliwia Owczarek
- ECOResearch Student Research Group, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland
| | - Adam K Puszkarz
- Division of Materials Science, Commodity Science and Textile Metrology, Textile Institute, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland
| | - Grzegorz Szparaga
- Division of Technology of Yarns, Commodity Science and Textile Metrology, Textile Institute, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland
| | - Michał Puchalski
- ECOResearch Student Research Group, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland
- Division of Materials Science, Commodity Science and Textile Metrology, Textile Institute, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland
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2
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Schippers C, Gutmann JS, Tsarkova LA. Revisiting the Contribution of Additives to the Long-Term Mechanical Stability and Hydrolytic Resistance of Highly Crystalline Polylactide Fibers. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1984-1995. [PMID: 36573577 DOI: 10.1021/acsami.2c16159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Additives are widely used to improve the processability, toughness, and hydrolytic resistance of poly(lactic acid) (PLA)-based materials. This study compares neat PLA fibers and fibers made from PLA blends with either poly(butylene succinate) (PBS) as a plasticizer or poly(d-lactic acid) (PDLA) as a nucleating agent. The fibers have been characterized with regard to their physical and structural properties after fabrication as well as after artificial aging at elevated temperature and humidity conditions. All samples have been fabricated using industrial melt-spinning equipment, resulting in a high crystallinity of about XC = 80% and a good initial toughness. Long-term relaxation behavior has been assessed with a self-developed lifetime prediction model, which is successfully verified for semicrystalline blended fibers. Despite slight improvement of the fiber elasticity and ductility, both types of blended fibers demonstrated a reduced hydrolytic resistance. These results suggest a design strategy for neat durable PLA fibers through processing-induced high crystallinity and orientation, which provide improved hydrolytic stability while preserving tough mechanical performance.
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Affiliation(s)
| | - Jochen S Gutmann
- German Textile Research Center North-West (DTNW), 47798Krefeld, Germany
- Department of Physical Chemistry, University Duisburg-Essen and CENIDE, 45141Essen, Germany
| | - Larisa A Tsarkova
- German Textile Research Center North-West (DTNW), 47798Krefeld, Germany
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3
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Giełdowska M, Puchalski M, Sztajnowski S, Krucińska I. Evolution of the Molecular and Supramolecular Structures of PLA during the Thermally Supported Hydrolytic Degradation of Wet Spinning Fibers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01778] [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]
Affiliation(s)
- Małgorzata Giełdowska
- Institute of Material Science of Textiles and Polymer Composites, Faculty of Material Technologies and Textile Design, Lodz University of Technology, ul. Zeromskiego 116, 90-924Lodz, Poland
| | - Michał Puchalski
- Institute of Material Science of Textiles and Polymer Composites, Faculty of Material Technologies and Textile Design, Lodz University of Technology, ul. Zeromskiego 116, 90-924Lodz, Poland
| | - Sławomir Sztajnowski
- Institute of Material Science of Textiles and Polymer Composites, Faculty of Material Technologies and Textile Design, Lodz University of Technology, ul. Zeromskiego 116, 90-924Lodz, Poland
| | - Izabella Krucińska
- Institute of Material Science of Textiles and Polymer Composites, Faculty of Material Technologies and Textile Design, Lodz University of Technology, ul. Zeromskiego 116, 90-924Lodz, Poland
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4
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Jia S, Han L, Chen Y, Pan H, Wang X, Zhang H, Dong L, Zhang H. Effect of initial crystallization on microstructure and mechanical properties of uniaxially pre-stretched poly(L-lactic acid). POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Nematic-to-Isotropic Phase Transition in Poly(L-Lactide) with Addition of Cyclodextrin during Abiotic Degradation Study. Int J Mol Sci 2022; 23:ijms23147693. [PMID: 35887040 PMCID: PMC9319020 DOI: 10.3390/ijms23147693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/28/2022] [Accepted: 07/08/2022] [Indexed: 12/04/2022] Open
Abstract
Poly(L-lactide) is capable of self-assembly into a nematic mesophase under the influence of temperature and mechanical stresses. Therefore, subsequent poly(L-lactide) films were obtained and characterized, showing nematic liquid crystal properties both before and after degradation. Herein, we present that, by introducing β-cyclodextrin into the polymer matrix, it is possible to obtain a chiral nematic mesophase during pressing, regardless of temperature and time. The obtained poly(L-lactide) films exhibiting liquid crystal properties were subjected to degradation tests and the influence of degradation on these properties was determined. Thermotropic phase behavior was investigated using polarized optical microscopy, X-ray diffraction, and differential scanning calorimetry. The degradation process demonstrated an influence on the liquid crystal properties of pressed polymer films. The colored planar texture of the chiral nematic mesophase, which was not observed prior to degradation in films without the addition of β-cyclodextrin, appeared after incubation in water as a result of the entrapment of degradation products in the polymer matrix. These unusual tailor-made properties, obtained in liquid crystals in (bio)degradable polymers using a simple method, demonstrate the potential for advanced photonic applications.
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6
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Glassy structure affected cold-crystallization behavior and structure of poly(lactic acid). JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03077-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Janeczek H, Duale K, Sikorska W, Godzierz M, Kordyka A, Marcinkowski A, Hercog A, Musioł M, Kowalczuk M, Christova D, Rydz J. Poly(l-Lactide) Liquid Crystals with Tailor-Made Properties Toward a Specific Nematic Mesophase Texture. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2022; 10:3323-3334. [PMID: 35310687 PMCID: PMC8924921 DOI: 10.1021/acssuschemeng.1c08282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/18/2022] [Indexed: 05/13/2023]
Abstract
This paper presents the liquid crystal (LC) properties of poly(l-lactide) (PLLA). Mesophase behavior is investigated using polarized optical microscopy, X-ray diffraction, and differential scanning calorimetry. The performed analyses confirm that pressed PLLA films exhibit the unique capability of self-assembling into a nematic mesophase under the influence of mechanical pressure, temperature, and time. It was originally demonstrated that the chiral nematic mesophase can be obtained by introducing fine powders into the polymer. Based on the research conducted, it was proved that the pressed PLLA films have a chiral nematic mesophase with a nematic-to-isotropic phase transition and a large mesophase stability range overlapping the temperature of the human body, which can persist for years at ambient temperature. The obtained films show tailor-made properties toward a nematic mesophase with a specific texture, including colored planar texture of the chiral nematic mesophase and blue-phase (BP) LC texture. The BP, described for the first time in plain PLLA, occurred over a wider than usual temperature range of stability between isotropic and chiral nematic thermotropic phases (ΔT ≈ 9 °C), which is an advantage of the obtained polymer material, in addition to ease of preparation. This opens up new prospects for advanced photonic green applications.
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Affiliation(s)
- Henryk Janeczek
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Khadar Duale
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Wanda Sikorska
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Marcin Godzierz
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Aleksandra Kordyka
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Andrzej Marcinkowski
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Anna Hercog
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Marta Musioł
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
| | - Marek Kowalczuk
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
- School
of Science, Faculty of Science and Engineering, University of Wolverhampton, Wulfruna St., Wolverhampton WV1 1LY, U.K.
| | - Darinka Christova
- Institute
of Polymers, Bulgarian Academy of Sciences, Akad. Georgi Bonchev Str., Bl. 103A, 1113 Sofia, Bulgaria
| | - Joanna Rydz
- Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland
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8
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Vozniak A, Bartczak Z. Deformation of Poly-l-lactid acid (PLLA) under Uniaxial Tension and Plane-Strain Compression. Polymers (Basel) 2021; 13:4432. [PMID: 34960984 PMCID: PMC8708863 DOI: 10.3390/polym13244432] [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: 11/29/2021] [Revised: 12/10/2021] [Accepted: 12/14/2021] [Indexed: 11/16/2022] Open
Abstract
The ability of PLLA, either amorphous or semicrystalline, to plastic deformation to large strain was investigated in a wide temperature range (Td = 70-140 °C). Active deformation mechanisms have been identified and compared for two different deformation modes-uniaxial drawing and plane-strain compression. The initially amorphous PLLA was capable of significant deformation in both tension and plane-strain compression. In contrast, the samples of crystallized PLLA were found brittle in tensile, whereas they proved to be ductile and capable of high-strain deformation when deformed in plane-strain compression. The main deformation mechanism identified in amorphous PLLA was the orientation of chains due to plastic flow, followed by strain-induced crystallization occurring at the true strain above e = 0.5. The oriented chains in amorphous phase were then transformed into oriented mesophase and/or oriented crystals. An upper temperature limit for mesophase formation was found below Td = 90 °C. The amount of mesophase formed in this process did not exceed 5 wt.%. An additional mesophase fraction was generated at high strains from crystals damaged by severe deformation. After the formation of the crystalline phase, further deformation followed the mechanisms characteristic for the semicrystalline polymer. Interlamellar slip supported by crystallographic chain slip has been identified as the major deformation mechanism in semicrystalline PLLA. It was found that the contribution of crystallographic slip increased notably with the increase in the deformation temperature. The most probable active crystallographic slip systems were (010)[001], (100)[001] or (110)[001] slip systems operating along the chain direction. At high temperatures (Td = 115-140 °C), the α→β crystal transformation was additionally observed, leading to the formation of a small fraction of β crystals.
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Affiliation(s)
| | - Zbigniew Bartczak
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland;
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9
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Farahani A, Zarei-Hanzaki A, Abedi HR, Tayebi L, Mostafavi E. Polylactic Acid Piezo-Biopolymers: Chemistry, Structural Evolution, Fabrication Methods, and Tissue Engineering Applications. J Funct Biomater 2021; 12:71. [PMID: 34940550 PMCID: PMC8704870 DOI: 10.3390/jfb12040071] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/11/2021] [Accepted: 11/18/2021] [Indexed: 01/11/2023] Open
Abstract
Polylactide acid (PLA), as an FDA-approved biomaterial, has been widely applied due to its unique merits, such as its biocompatibility, biodegradability, and piezoelectricity. Numerous utilizations, including sensors, actuators, and bio-application-its most exciting application to promote cell migration, differentiation, growth, and protein-surface interaction-originate from the piezoelectricity effect. Since PLA exhibits piezoelectricity in both crystalline structure and an amorphous state, it is crucial to study it closely to understand the source of such a phenomenon. In this respect, in the current study, we first reviewed the methods promoting piezoelectricity. The present work is a comprehensive review that was conducted to promote the low piezoelectric constant of PLA in numerous procedures. In this respect, its chemistry and structural origins have been explored in detail. Combining any other variables to induce a specific application or to improve any PLA barriers, namely, its hydrophobicity, poor electrical conductivity, or the tuning of its mechanical properties, especially in the application of cardiovascular tissue engineering, is also discussed wherever relevant.
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Affiliation(s)
- Amirhossein Farahani
- Hot Deformation & Thermomechanical Processing Laboratory of High Performance Engineering Materials, School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran 11155-4563, Iran
| | - Abbas Zarei-Hanzaki
- Hot Deformation & Thermomechanical Processing Laboratory of High Performance Engineering Materials, School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran 11155-4563, Iran
| | - Hamid Reza Abedi
- School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST), Tehran 16846-13114, Iran
| | - Lobat Tayebi
- School of Dentistry, Marquette University, Milwaukee, WI 53233, USA;
| | - Ebrahim Mostafavi
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
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10
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Zheng Y, Pan P. Crystallization of biodegradable and biobased polyesters: Polymorphism, cocrystallization, and structure-property relationship. Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101291] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Glagolev MK, Vasilevskaya VV. Coarse-grained simulation of molecular ordering in polylactic blends under uniaxial strain. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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12
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Fernandes Nassar S, Delpouve N, Sollogoub C, Guinault A, Stoclet G, Régnier G, Domenek S. Impact of Nanoconfinement on Polylactide Crystallization and Gas Barrier Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:9953-9965. [PMID: 32011861 DOI: 10.1021/acsami.9b21391] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The barrier properties of poly(l-lactide) (PLLA) were investigated in multinanolayer systems, probing the effect of confinement, the compatibility between the confining and the confined polymer, crystal orientation, and amorphous phase properties. The multilayer coextrusion process was used to confine PLLA between two amorphous polymers (polystyrene, PS; and polycarbonate, PC), which have different chemical affinities with PLLA. Confined PLLA layers of approximately 20 nm thickness were obtained. The multinanolayer materials were annealed at different temperatures to obtain PLLA crystallites with distinct polymorphs. PLLA annealed in PC/PLLA films at 120 °C afforded a crystallinity degree up to 65%, and PLLA annealed in PC/PLLA or PS/PLLA films at 85 °C had a crystallinity degree of 45%. WAXS measurements evidenced that the PLLA lamellas between PS layers had a mixed in-plane and on-edge orientation. PLLA lamellas between PC layers were uniquely oriented in-plane. DMA results evidenced a shift of the PC glass transition toward lower temperature, suggesting the possible presence of an interphase. The development of the rigid amorphous fraction (RAF) in the amorphous phase during annealing was impacted by the confiner polymer. The RAF content of semicrystalline PLLA was about 15% in PC/PLLA, whereas it was neglectable in PS/PLLA. The oxygen barrier properties appeared to be governed by RAF content, and no impact of the PLLA polymorph or the crystalline orientation was observed. This study shows that the confinement of PLLA on itself does not impact barrier properties but that the proper choice of the confiner polymer can lead to decrease the phase coupling which creates the RAF. It is the prevention of RAF that decreases permeability.
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Affiliation(s)
| | - Nicolas Delpouve
- Normandie Univ , UNIROUEN Normandie, INSA Rouen, CNRS, Groupe de Physique des Matériaux , 76000 Rouen , France
| | - Cyrille Sollogoub
- Laboratoire PIMM, Arts et Métiers, CNRS , CNAM, Hesam Université , 151, Boulevard de l'Hôpital , F-75013 Paris Cedex , France
| | - Alain Guinault
- Laboratoire PIMM, Arts et Métiers, CNRS , CNAM, Hesam Université , 151, Boulevard de l'Hôpital , F-75013 Paris Cedex , France
| | - Gregory Stoclet
- Univ Lille , CNRS, INRA, ENSCL, UMR 8207 - UMET - Unité Matériaux et Transformations , F-59000 Lille , France
| | - Gilles Régnier
- Laboratoire PIMM, Arts et Métiers, CNRS , CNAM, Hesam Université , 151, Boulevard de l'Hôpital , F-75013 Paris Cedex , France
| | - Sandra Domenek
- Université Paris-Saclay, AgroParisTech , INRAE, UMR 0782 SayFood , 91300 Massy , France
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13
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Morel A, Oberle SC, Ulrich S, Yazgan G, Spano F, Ferguson SJ, Fortunato G, Rossi RM. Revealing non-crystalline polymer superstructures within electrospun fibers through solvent-induced phase rearrangements. NANOSCALE 2019; 11:16788-16800. [PMID: 31465059 DOI: 10.1039/c9nr04432a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The design of nanofibers for biomedical applications requires a deep understanding of the fiber formation process and the resulting internal structure. In this regard, non-crystalline, mesomorphic structures play a central role in the processing of many polymers as precursors in the formation of crystalline superstructures (e.g. shish-kebab) and influence strongly the physical properties of polymers with a low degree of crystallinity. Yet, our ability to probe these relevant features is often greatly limited by their low contrast differences with the amorphous phase. We present an approach to reveal the organization of the mesomorphic superstructures within such polymeric materials, on the example of electrospun poly(l-lactide) nanofibers. Based on solvent-induced crystallization, this method employs fine-tuned solvent/non-solvent systems to enhance the contrast of these structural features by selectively triggering and controlling reorganization of the phases. Hereby, the mesomorphic regions are transformed into an α-crystalline phase, while the nanoscale spatial arrangement of the underlying superstructures is preserved. Combined with X-ray analytical techniques and electron microscopy, our approach provides detailed insights into the nanofiber's inner architecture, allowing for its direct visualization. Thereby, the influence of electrospinning parameters on the fiber formation process is explained as well as the impact of the resulting non-crystalline superstructures on single fiber mechanical properties. The method can be applied to comparable polymers for the development of materials with controlled, tailored properties.
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Affiliation(s)
- Alexandre Morel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St Gallen, Switzerland.
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14
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Affiliation(s)
- Masoud Razavi
- College of Polymer Science and Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Shi-Qing Wang
- College of Polymer Science and Engineering, University of Akron, Akron, Ohio 44325, United States
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15
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Xu R, Tian Z, Xie J, Lei C. The structure transformation of pre‐oriented polylactic acid film during uniaxial stretching at room temperature. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rui‐Jie Xu
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
| | - Zi‐Qin Tian
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
| | - Jia‐Yi Xie
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
| | - Cai‐Hong Lei
- Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangdong Provincial Engineering Laboratory of Energy Storage Materials and Devices, School of Materials and EnergyGuangdong University of Technology Guangzhou People's Republic of China
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16
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Influence of Various Climatic Conditions on the Structural Changes of Semicrystalline PLA Spun-Bonded Mulching Nonwovens during Outdoor Composting. Polymers (Basel) 2019; 11:polym11030559. [PMID: 30960543 PMCID: PMC6473370 DOI: 10.3390/polym11030559] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 03/20/2019] [Accepted: 03/22/2019] [Indexed: 11/23/2022] Open
Abstract
This study analyzed the structural changes of semicrystalline polylactide (PLA) in the form of spun-bonded mulching nonwovens, during outdoor composting. The investigation was carried out at the microstructural, supramolecular and molecular levels using scanning electron microscopy (SEM), wide-angle X-ray diffraction (WAXD) and the viscosity method, respectively. The obtained experimental results revealed how the popular outdoor composting method, realized under two different European climatic conditions (in Poland and in Bulgaria), affects the degradation of PLA nonwoven, designed for agriculture use. The results showed the insignificant influence of the climatic conditions and prepared compost mixtures on the molecular and micromorphological structure of PLA spun-bonded mulching nonwovens, with a visible increase in crystallinity after the first year of composting. Significant changes were observed only after the second year of composting, which indicates the resistance of semicrystalline PLA to degradation in outdoor composting conditions.
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17
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Sango T, Stoclet G, Joly N, Marin A, Cheumani Yona AM, Duchatel L, Kor Ndikontar M, Lefebvre J. Water–soluble extracts from banana pseudo–stem as functional additives for polylactic acid: Thermal and mechanical investigations. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Standau T, Zhao C, Murillo Castellón S, Bonten C, Altstädt V. Chemical Modification and Foam Processing of Polylactide (PLA). Polymers (Basel) 2019; 11:E306. [PMID: 30960290 PMCID: PMC6419231 DOI: 10.3390/polym11020306] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 11/16/2022] Open
Abstract
Polylactide (PLA) is known as one of the most promising biopolymers as it is derived from renewable feedstock and can be biodegraded. During the last two decades, it moved more and more into the focus of scientific research and industrial use. It is even considered as a suitable replacement for standard petroleum-based polymers, such as polystyrene (PS), which can be found in a wide range of applications-amongst others in foams for packaging and insulation applications-but cause strong environmental issues. PLA has comparable mechanical properties to PS. However, the lack of melt strength is often referred to as a drawback for most foaming processes. One way to overcome this issue is the incorporation of chemical modifiers which can induce chain extension, branching, or cross-linking. As such, a wide variety of substances were studied in the literature. This work should give an overview of the most commonly used chemical modifiers and their effects on rheological, thermal, and foaming behavior. Therefore, this review article summarizes the research conducted on neat and chemically modified PLA foamed with the conventional foaming methods (i.e., batch foaming, foam extrusion, foam injection molding, and bead foaming).
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Affiliation(s)
- Tobias Standau
- Depatment of Polymer Engineering, University Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany.
| | - Chunjing Zhao
- Depatment of Polymer Engineering, University Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany.
| | - Svenja Murillo Castellón
- Institut für Kunststofftechnik, University of Stuttgart, Pfaffenwaldring 32, 70569 Stuttgart, Germany.
| | - Christian Bonten
- Institut für Kunststofftechnik, University of Stuttgart, Pfaffenwaldring 32, 70569 Stuttgart, Germany.
| | - Volker Altstädt
- Depatment of Polymer Engineering, University Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany.
- Bavarian Polymer Institute and Bayreuth Institute of Macromolecular Research, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany.
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Morel A, Domaschke S, Urundolil Kumaran V, Alexeev D, Sadeghpour A, Ramakrishna S, Ferguson S, Rossi R, Mazza E, Ehret A, Fortunato G. Correlating diameter, mechanical and structural properties of poly(l-lactide) fibres from needleless electrospinning. Acta Biomater 2018; 81:169-183. [PMID: 30273744 DOI: 10.1016/j.actbio.2018.09.055] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/16/2018] [Accepted: 09/27/2018] [Indexed: 10/28/2022]
Abstract
The development and application of nanofibres requires a thorough understanding of the mechanical properties on a single fibre level including respective modelling tools for precise fibre analysis. This work presents a mechanical and morphological study of poly-l-lactide nanofibres developed by needleless electrospinning. Atomic force microscopy (AFM) and micromechanical testing (MMT) were used to characterise the mechanical response of the fibres within a diameter range of 200-1400 nm. Young's moduli E determined by means of both methods are in sound agreement and show a strong increase for thinner fibres below a critical diameter of 800 nm. Similar increasing trends for yield stress and hardening modulus were measured by MMT. Finite element analyses show that the common practice of modelling three-point bending tests with either double supported or double clamped beams is prone to significant bias in the determined elastic properties, and that the latter is a good approximation only for small diameters. Therefore, an analytical formula based on intermediate boundary conditions is proposed that is valid for the whole tested range of fibre diameters, providing a consistently low error in axial Young's modulus below 10%. The analysis of fibre morphology by differential scanning calorimetry and 2D wide-angle X-ray scattering revealed increasing polymer chains alignment in the amorphous phase and higher crystallinity of fibres for decreasing diameter. The combination of these observations with the mechanical characterisation suggests a linear relationship between Young's modulus and both crystallinity and molecular orientation in the amorphous phase. STATEMENT OF SIGNIFICANCE: Fibrous membranes have rapidly growing use in various applications, each of which comes with specific property requirements. However, the development and production of nanofibre membranes with dedicated mechanical properties is challenging, in particular with techniques suitable for industrial scales such as needleless electrospinning. It is therefore a key step to understand the mechanical and structural characteristics of single nanofibres developed in this process, and to this end, the present work presents changes of internal fibre structure and mechanical properties with diameter, based on dedicated models. Special attention was given to the commonly used models for analyzing Young's modulus of single nanofibers in three-point bending tests, which are shown to be prone to large errors, and an improved robust approach is proposed.
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20
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Rosely CVS, Nagendra B, Sivaprasad VP, Gowd EB. Influence of Boron Nitride Nanosheets on the Crystallization and Polymorphism of Poly(l-lactide). J Phys Chem B 2018; 122:6442-6451. [DOI: 10.1021/acs.jpcb.8b03211] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. V. Sijla Rosely
- Materials Science and Technology Division, CSIR−National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 001, India
| | - Baku Nagendra
- Materials Science and Technology Division, CSIR−National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 001, India
| | - Vijayan Pillai Sivaprasad
- Materials Science and Technology Division, CSIR−National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
| | - E. Bhoje Gowd
- Materials Science and Technology Division, CSIR−National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 001, India
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21
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Billimoria K, Heeley EL, Parsons N, Figiel Ł. An investigation into the crystalline morphology transitions in poly-L-lactic acid (PLLA) under uniaxial deformation in the quasi-solid-state regime. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.01.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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The impact of shape memory test on degradation profile of a bioresorbable polymer. J Mech Behav Biomed Mater 2018; 81:39-45. [PMID: 29482178 DOI: 10.1016/j.jmbbm.2018.02.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 02/17/2018] [Accepted: 02/17/2018] [Indexed: 11/23/2022]
Abstract
The semicrystalline poly(L-lactide) (PLLA) belongs to the materials with shape memory effect (SME) and as a bioresorbable and biocompatible polymer it have found many applications in medical and pharmaceutical field. Assessment of the SME impact on the polymer degradation profile plays crucial role in applications such as drug release systems or in regenerative medicine. Herein, the results of in vitro degradation studies of PLLA samples after SME full test cycle are presented. The samples were loaded and deformed in two manners: progressive and non-progressive. The performed experiments illustrate also influence of the material mechanical damages, caused e.g. during incorrect implantation of PLLA product, on hydrolytic degradation profile. Apparently, degradation profiles are significantly different for the material which was not subjected to the deformation and the deformed ones. The materials after deformation of 50% (in SME cycle) was characterized by non-reversible morphology changes. The effect was observed in deformed samples during the SME test which were carried out ten times.
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Løvdal ALV, Andreasen JW, Mikkelsen LP, Agersted K, Almdal K. Mechanical properties of biaxially strained poly(l
-lactide) tubes: Strain rate and temperature dependence. J Appl Polym Sci 2017. [DOI: 10.1002/app.45192] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Alexandra Liv Vest Løvdal
- Department of Micro- and Nanotechnology; Technical University of Denmark; Kongens Lyngby 2800 Denmark
| | - Jens W. Andreasen
- Department of Energy Conversion and Storage; Technical University of Denmark; Roskilde 4000
| | - Lars P. Mikkelsen
- Department of Wind Energy; Technical University of Denmark; Roskilde 4000
| | - Karsten Agersted
- Department of Energy Conversion and Storage; Technical University of Denmark; Roskilde 4000
| | - Kristoffer Almdal
- Department of Micro- and Nanotechnology; Technical University of Denmark; Kongens Lyngby 2800 Denmark
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24
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Li H, Wu Z, Xue F, Bai J, Chu C. Influence of equal channel angular pressing on the properties of polylactic acid. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24597] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hong Li
- School of Materials Science and Engineering; Southeast University; Jiangning, Nanjing Jiangsu 211189 China
- Jiangsu Key Laboratory for Advanced Metallic Materials; Jiangning, Nanjing Jiangsu 211189 China
| | - Zhemin Wu
- School of Materials Science and Engineering; Southeast University; Jiangning, Nanjing Jiangsu 211189 China
- Jiangsu Key Laboratory for Advanced Metallic Materials; Jiangning, Nanjing Jiangsu 211189 China
| | - Feng Xue
- School of Materials Science and Engineering; Southeast University; Jiangning, Nanjing Jiangsu 211189 China
- Jiangsu Key Laboratory for Advanced Metallic Materials; Jiangning, Nanjing Jiangsu 211189 China
| | - Jing Bai
- School of Materials Science and Engineering; Southeast University; Jiangning, Nanjing Jiangsu 211189 China
- Jiangsu Key Laboratory for Advanced Metallic Materials; Jiangning, Nanjing Jiangsu 211189 China
| | - Chenglin Chu
- School of Materials Science and Engineering; Southeast University; Jiangning, Nanjing Jiangsu 211189 China
- Jiangsu Key Laboratory for Advanced Metallic Materials; Jiangning, Nanjing Jiangsu 211189 China
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25
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Sobota M, Jurczyk S, Kwiecień M, Smola-Dmochowska A, Musioł M, Domański M, Janeczek H, Kawalec M, Kurcok P. Crystallinity as a tunable switch of poly(L-lactide) shape memory effects. J Mech Behav Biomed Mater 2017; 66:144-151. [DOI: 10.1016/j.jmbbm.2016.11.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/31/2016] [Accepted: 11/03/2016] [Indexed: 10/20/2022]
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26
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Puchalski M, Kwolek S, Szparaga G, Chrzanowski M, Krucińska I. Investigation of the Influence of PLA Molecular Structure on the Crystalline Forms (α' and α) and Mechanical Properties of Wet Spinning Fibres. Polymers (Basel) 2017; 9:E18. [PMID: 30970693 PMCID: PMC6431915 DOI: 10.3390/polym9010018] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 12/29/2016] [Accepted: 01/03/2017] [Indexed: 12/14/2022] Open
Abstract
In this paper, the influence of the molecular structure of polylactide (PLA)-characterised by its molar mass and content of d-lactide isomer-on the molecular ordering and α'⁻α form transition during fibre manufacturing by the wet spinning method is described. Fibres were studied by wide-angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC). Additionally, the physical and mechanical properties of the fibres were determined. This study also examines the preliminary molecular ordering and crystallisation of PLA fibres at various draw ratios. The performed experiments clearly show the dependence of the molecular ordering of PLA on the molar mass and d-lactide content during the wet spinning process. The fibres manufactured from PLA with the lowest content of d-lactide and the lowest molar mass were characterised by a higher tendency for crystallisation and a higher possibility to undergo the disorder-to-order phase transition (α' to α form). The structural changes in PLA explain the observed changes in the physical and mechanical properties of the obtained fibres.
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Affiliation(s)
- Michał Puchalski
- Department of Material and Commodity Sciences and Textile Metrology, Faculty of Material Technologies and Textile Design, Centre of Advanced Technologies of Human-Friendly Textiles "Pro Humano Tex", Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Sylwia Kwolek
- Department of Material and Commodity Sciences and Textile Metrology, Faculty of Material Technologies and Textile Design, Centre of Advanced Technologies of Human-Friendly Textiles "Pro Humano Tex", Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Grzegorz Szparaga
- Department of Material and Commodity Sciences and Textile Metrology, Faculty of Material Technologies and Textile Design, Centre of Advanced Technologies of Human-Friendly Textiles "Pro Humano Tex", Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Michał Chrzanowski
- Department of Material and Commodity Sciences and Textile Metrology, Faculty of Material Technologies and Textile Design, Centre of Advanced Technologies of Human-Friendly Textiles "Pro Humano Tex", Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
| | - Izabella Krucińska
- Department of Material and Commodity Sciences and Textile Metrology, Faculty of Material Technologies and Textile Design, Centre of Advanced Technologies of Human-Friendly Textiles "Pro Humano Tex", Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland.
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29
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Direct investigations on strain-induced cold crystallization behavior and structure evolutions in amorphous poly(lactic acid) with SAXS and WAXS measurements. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.014] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Zhou C, Li H, Zhang W, Li J, Huang S, Meng Y, de Claville Christiansen J, Yu D, Wu Z, Jiang S. Thermal strain-induced cold crystallization of amorphous poly(lactic acid). CrystEngComm 2016. [DOI: 10.1039/c6ce00464d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Lizundia E, Larrañaga A, Vilas JL, León LM. Three-dimensional orientation of poly(l-lactide) crystals under uniaxial drawing. RSC Adv 2016. [DOI: 10.1039/c5ra22680e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three-dimensional strain-induced crystallization upon poly (l-lactide) stretching revealed by X-ray diffraction texture analysis via pole figure measurements.
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Affiliation(s)
- E. Lizundia
- Macromolecular Chemistry Research Group (LABQUIMAC)
- Dept. of Physical Chemistry
- Faculty of Science and Technology
- University of the Basque Country (UPV/EHU)
- Spain
| | - A. Larrañaga
- SGIker
- General Research Services
- University of the Basque Country (UPV/EHU)
- Spain
| | - J. L. Vilas
- Macromolecular Chemistry Research Group (LABQUIMAC)
- Dept. of Physical Chemistry
- Faculty of Science and Technology
- University of the Basque Country (UPV/EHU)
- Spain
| | - L. M. León
- Macromolecular Chemistry Research Group (LABQUIMAC)
- Dept. of Physical Chemistry
- Faculty of Science and Technology
- University of the Basque Country (UPV/EHU)
- Spain
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32
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Measurement of multi-scale deformation of polycarbonate using X-ray scattering with in-situ loading and digital image correlation. POLYMER 2016. [DOI: 10.1016/j.polymer.2015.11.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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33
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Løvdal A, Andreasen JW, Mikkelsen LP, Agersted K, Almdal K. Characterization of biaxial strain of poly(l
-lactide) tubes. POLYM INT 2015. [DOI: 10.1002/pi.5040] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Alexandra Løvdal
- Technical University of Denmark; Department of Microtechnology and Nanotechnology; Ørsteds Plads, 345E 2800 Kongens Lyngby Denmark
| | - Jens W Andreasen
- Technical University of Denmark; Department of Energy Conversion and Storage; Frederiksborgvej 399, 4000 Roskilde Denmark
| | - Lars P Mikkelsen
- Technical University of Denmark; Department of Wind Energy; Frederiksborgvej 399, 4000 Roskilde Denmark
| | - Karsten Agersted
- Technical University of Denmark; Department of Energy Conversion and Storage; Frederiksborgvej 399, 4000 Roskilde Denmark
| | - Kristoffer Almdal
- Technical University of Denmark; Department of Microtechnology and Nanotechnology; Ørsteds Plads, 345E 2800 Kongens Lyngby Denmark
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34
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Chen Z, Zhang S, Wu F, Yang W, Liu Z, Yang M. Motion mode of poly(lactic acid) chains in film during strain-induced crystallization. J Appl Polym Sci 2015. [DOI: 10.1002/app.42969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhefeng Chen
- College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Shuyang Zhang
- College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Feng Wu
- College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Wei Yang
- College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Zhengying Liu
- College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Mingbo Yang
- College of Polymer Science and Engineering; Sichuan University; Chengdu 610065 People's Republic of China
- State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 People's Republic of China
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35
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Nouri S, Lafleur PG, Dubois C. Enhanced Film Blowing of Polylactide by Incorporating Branched Chains and Stereocomplex Crystals. INT POLYM PROC 2015. [DOI: 10.3139/217.3080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Chain architecture is an influential parameter in melt processing of polymeric material. In this study effect of different chain structures on polylactide (PLA) film blowing process and on the final film properties was investigated. Blends of linear PLA with three branched poly(L-lactide)s with 4-arms star shaped, comb like and hyper branched structures were prepared by twin screw extruder. In another series of blending, poly(D-lactide) of these branched structures were used to obtain stereocomplex crystal. Operating window of blends were determined in a series of film blowing process experiments with different blow up and take up ratio and results were compared to linear PLA as a reference. Moreover, different characterization techniques were applied to determine the properties of produced films. It was found that addition of branched architecture and presence of stereocomplex in a linear PLA matrix result in a greater operating window for film blowing and improve mechanical and crystallization properties of blown films.
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Affiliation(s)
- S. Nouri
- CREPEC , Chemical Engineering Department, Ecole Polytechnique, Montreal, QC , Canada
| | - P. G. Lafleur
- CREPEC , Chemical Engineering Department, Ecole Polytechnique, Montreal, QC , Canada
| | - C. Dubois
- CREPEC , Chemical Engineering Department, Ecole Polytechnique, Montreal, QC , Canada
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36
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Effect of the simultaneous biaxial stretching on the structural and mechanical properties of PLA, PBAT and their blends at rubbery state. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.05.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Jariyasakoolroj P, Tashiro K, Wang H, Yamamoto H, Chinsirikul W, Kerddonfag N, Chirachanchai S. Isotropically small crystalline lamellae induced by high biaxial-stretching rate as a key microstructure for super-tough polylactide film. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.05.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Wang K, Brüster B, Addiego F, Kfoury G, Hassouna F, Ruch D, Raquez JM, Dubois P. Strain-induced deformation mechanisms of polylactide plasticized with acrylated poly(ethylene glycol) obtained by reactive extrusion. POLYM INT 2015. [DOI: 10.1002/pi.4927] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kui Wang
- Department of Materials Research and Technology (MRT); Luxembourg Institute of Science and Technology (LIST); ZAE Robert Steichen, 5 Rue Bommel L-4940 Hautcharage Luxembourg
| | - Berit Brüster
- Department of Materials Research and Technology (MRT); Luxembourg Institute of Science and Technology (LIST); ZAE Robert Steichen, 5 Rue Bommel L-4940 Hautcharage Luxembourg
| | - Frédéric Addiego
- Department of Materials Research and Technology (MRT); Luxembourg Institute of Science and Technology (LIST); ZAE Robert Steichen, 5 Rue Bommel L-4940 Hautcharage Luxembourg
| | - Georgio Kfoury
- Department of Materials Research and Technology (MRT); Luxembourg Institute of Science and Technology (LIST); ZAE Robert Steichen, 5 Rue Bommel L-4940 Hautcharage Luxembourg
| | - Fatima Hassouna
- Department of Materials Research and Technology (MRT); Luxembourg Institute of Science and Technology (LIST); ZAE Robert Steichen, 5 Rue Bommel L-4940 Hautcharage Luxembourg
| | - David Ruch
- Department of Materials Research and Technology (MRT); Luxembourg Institute of Science and Technology (LIST); ZAE Robert Steichen, 5 Rue Bommel L-4940 Hautcharage Luxembourg
| | - Jean-Marie Raquez
- Laboratory of Polymeric and Composite Materials; Centre d'Innovation et de Recherche en Matériaux Polymères (CIRMAP); Université de Mons, Place du Parc 20 B-7000 Mons Belgium
| | - Philippe Dubois
- Laboratory of Polymeric and Composite Materials; Centre d'Innovation et de Recherche en Matériaux Polymères (CIRMAP); Université de Mons, Place du Parc 20 B-7000 Mons Belgium
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40
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Zhou C, Li H, Zhang Y, Xue F, Huang S, Wen H, Li J, de Claville Christiansen J, Yu D, Wu Z, Jiang S. Deformation and structure evolution of glassy poly(lactic acid) below the glass transition temperature. CrystEngComm 2015. [DOI: 10.1039/c5ce00669d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mesocrystal was found to form from the mesophase of glassy PLA stretched below the glass transition temperature.
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Affiliation(s)
- Chengbo Zhou
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072, PR China
| | - Hongfei Li
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, PR China
| | - Yao Zhang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072, PR China
| | - Feifei Xue
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072, PR China
| | - Shaoyong Huang
- Key Laboratory of Polymer Eco-materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, PR China
| | - Huiying Wen
- College of Engineering and Technology
- Northeast Forestry University
- Harbin 150040, PR China
| | - Jingqing Li
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072, PR China
| | | | - Donghong Yu
- Department of Chemistry and Biosciences
- Aalborg University
- Aalborg, Denmark
| | - Zhonghua Wu
- Beijing Synchrotron Radiation Laboratory
- Institute of High Energy Physics
- Chinese Academy of Science
- Beijing 100039, PR China
| | - Shichun Jiang
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072, PR China
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41
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Uniaxial stretching of polylactide with different initial crystalline morphologies and temperature effect. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.08.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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42
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Camarero-Espinosa S, Boday DJ, Weder C, Foster EJ. Cellulose nanocrystal driven crystallization of poly(d,l-lactide) and improvement of the thermomechanical properties. J Appl Polym Sci 2014. [DOI: 10.1002/app.41607] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Sandra Camarero-Espinosa
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
| | | | - Christoph Weder
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
| | - E. Johan Foster
- Adolphe Merkle Institute, University of Fribourg; Chemin des Verdiers 4 CH-1700 Fribourg Switzerland
- Virginia Tech; Department of Materials Science and Engineering; 213 Holden Hall, 445 Old Turner Street Blacksburg Virginia 24061
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43
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Hamonic F, Prevosto D, Dargent E, Saiter A. Contribution of chain alignment and crystallization in the evolution of cooperativity in drawn polymers. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.04.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Stoclet G, Lefebvre J, Séguéla R, Vanmansart C. In-situ SAXS study of the plastic deformation behavior of polylactide upon cold-drawing. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.02.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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45
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Lee SC, Han JI, Heo JW. Endotherm just above glass transition in uniaxially drawn poly(lactic acid)s films with various d-isomer contents. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.04.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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46
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Wu QY, Wan LS, Xu ZK. Crystallizable diluent-templated polyacrylonitrile foams for macroporous carbon monoliths. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.11.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Hébert JS, Wood-Adams P, Heuzey MC, Dubois C, Brisson J. Morphology of polylactic acid crystallized during annealing after uniaxial deformation. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23231] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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