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Polidar M, Metzsch-Zilligen E, Pfaendner R. Controlled and Accelerated Hydrolysis of Polylactide (PLA) through Pentaerythritol Phosphites with Acid Scavengers. Polymers (Basel) 2022; 14:polym14194237. [PMID: 36236186 PMCID: PMC9573666 DOI: 10.3390/polym14194237] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 11/16/2022] Open
Abstract
This study provides insight into the accelerated hydrolysis of polyester PLA through the addition of phosphites based on pentaerythritol. To control hydrolysis and ensure processing stability, different types of phosphites and combinations of phosphites with acid scavengers were studied. Therefore, commercially available PLA was compounded with selected additives on a twin-screw extruder, and hydrolysis experiments were performed at 23 °C, 35 °C and 58 °C in deionized water. Hydrolysis of PLA was evaluated by the melt volume rate (MVR) and size-exclusion chromatography (SEC). For example, after 4 days of water storage at 58 °C, the number average molecular weight of the PLA comparison sample was reduced by 31.3%, whereas PLA compounded with 0.8% phosphite P1 had a 57.7% lower molecular weight. The results are in good agreement with the expected and tested stability against hydrolysis of the investigated phosphite structures. 31P-NMR spectroscopy was utilized to elucidate the hydrolysis of phosphites in the presence of lactic acid. With the addition of phosphites based on pentaerythritol, the hydrolysis rate can be enhanced, and faster biodegradation behavior of biodegradable polyesters is expected. Accelerated biodegradation is beneficial for reducing the residence time of polymers in composting facilities or during home composting and as litter or microplastic residues.
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2
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Liu Q, Fu Y, Wu B, Tang J, Wang Y, Wu Y, Zhang M, Shen S, Shen Y, Gao C, Ding J, Zhu L. Imaging moiety-directed co-assembly for biodegradation control with synchronous four-modal biotracking. Biomaterials 2022; 287:121665. [PMID: 35809403 DOI: 10.1016/j.biomaterials.2022.121665] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/25/2022] [Accepted: 06/29/2022] [Indexed: 12/20/2022]
Abstract
The complexity of existing methods for biodegradation control limits the multi-functionality of biomedical materials. It is urgent to develop simple and straightforward strategies to control the biodegradation rate with precise tracking of various parameters in real-time. Here, we show an imaging moiety-directed co-assembly strategy, in which different imaging moieties bearing non-covalent interaction sites are covalently introduced into the poly (D,l-lactic acid) (PDLLA) chain as end groups, followed by alternate non-covalent interactions with polymer chains upon compression molding. This strategy takes advantage of a variety of bonding types (including CH-π, CH-F, etc.) to firmly integrate the PDLLA chains and strongly control the biodegradation rate, making the amorphous prototype degraded much slower than higher-molecular-weight counterparts, and the local inflammatory response is insignificant. On this basis, a synchronous four-modal (X-ray computed tomography + fluorescence + photoacoustics + ultrasound) imaging was achieved on the single entity in vivo, even within a millimeter-scale thick-skin tissue. These imaging signals can precisely correlate the multi parameter variation trend of material mass, volume and molecular weight, signifying that co-assembly can be utilized to develop advanced theranostic systems. SINGLE SENTENCE SUMMARY: We developed an imaging moiety-directed co-assembly strategy to control the biodegradation rate and achieve the synchronization of real-time four-modal imaging in vivo. These imaging signals can precisely correlate the multi-parameter variation trend of material mass, volume and molecular weight, which provided comprehensive biomedical information accessing both qualitatively and quantitatively.
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Affiliation(s)
- Qingsong Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Ye Fu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Bin Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Jingyu Tang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yaoben Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yanping Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Jiangsu, Nanjing, 210023, China
| | - Man Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Shen Shen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yang Shen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Caiyun Gao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China.
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China.
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Tuccitto AV, Anstey A, Sansone ND, Park CB, Lee PC. Controlling stereocomplex crystal morphology in poly(lactide) through chain alignment. Int J Biol Macromol 2022; 218:22-32. [PMID: 35850270 DOI: 10.1016/j.ijbiomac.2022.07.081] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/03/2022] [Accepted: 07/10/2022] [Indexed: 11/19/2022]
Abstract
The incorporation of poly(d-lactide) (PDLA) to form stereocomplex crystallites (SCs) within a poly(l-lactide) (PLLA) matrix is among the most effective strategies in overcoming PLLA's numerous drawbacks. However, high concentrations of PDLA (>3 wt%) are required to improve PLLA's crystallization kinetics and melt strength, which is undesirable owing to PDLA's high cost. In this study, we use chain alignment as a levier to tune stereocomplex superstructure morphology to overcome these limitations. Herein, PLLA/PDLA blends were manufactured using an environmentally friendly and low-cost single step spunbond fibrillation process, yielding microfibers stretched to diameters of 5-20 μm. During this stretching process, PLLA and PDLA chains are aligned along the flow direction. SCs subsequently formed in situ upon heating, dramatically improving crystallization kinetics, melt elasticity, and tensile performance compared with neat PLLA and non-stretched blend analogues, even with low PDLA content (<3 wt%). These improvements were attributed to topological variations in SC superstructures caused by alignment of PLLA and PDLA chains. The application of chain alignment in tuning SC superstructure morphology is ubiquitous in fibrillation processes.
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Affiliation(s)
- Anthony V Tuccitto
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada; Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada
| | - Andrew Anstey
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada; Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada
| | - Nello D Sansone
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada
| | - Chul B Park
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada.
| | - Patrick C Lee
- Multifunctional Composites Manufacturing Laboratory (MCML), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, M5S 3G8, Canada.
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4
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Takahashi A, Yamanishi M, Kameyama A. Lewis Adduct-Dissociating Hydrolysis of Boratrane for Water-Triggered Dehydration of Copolymers with a Hydrophobic Moiety. ACS Macro Lett 2022; 11:766-771. [PMID: 35622979 DOI: 10.1021/acsmacrolett.2c00161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
As a new example of intrinsically water-triggered phenomena, we report underwater dehydration of the statistical copolymers synthesized from triethanolamine borate (TEAB) methacrylate and styrene (St) induced by the hydrolysis of the pendant TEAB group. TEAB possesses high polarity owing to its internal Lewis adduct structure, which is lost by hydrolysis to triethanolamine (TEA) with a lower dipole moment. Therefore, the hydration of the copolymers became unfavorable through the hydrolysis of the pendant TEAB to TEA, despite polyol formation, and through a hydrophobic interaction based on St moieties becoming alternatively dominant. The dehydration behavior of the copolymers, along with the hydrolysis of the pendant TEAB group, was systematically investigated. The water solubility of the copolymers was found to be dependent on the gradient of the hydrolysis equilibrium of TEAB on the side chains and was the lowest for the TEA state. These findings offer a novel concept toward designing water-responsive materials.
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Affiliation(s)
- Akira Takahashi
- Department of Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 221-8686, Japan
| | - Masahiro Yamanishi
- Department of Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 221-8686, Japan
| | - Atsushi Kameyama
- Department of Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 221-8686, Japan
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5
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Gao C, Gao Y, Wang S, Dong Y, Wu Y, Liu Y, Wang C. Self-healing unsaturated polyester sensor based on multiple hydrogen bonds. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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6
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Xuan W, Odelius K, Hakkarainen M. Tailoring Oligomeric Plasticizers for Polylactide through Structural Control. ACS OMEGA 2022; 7:14305-14316. [PMID: 35573211 PMCID: PMC9089748 DOI: 10.1021/acsomega.2c01160] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 03/28/2022] [Indexed: 06/15/2023]
Abstract
Structural variations (oligolactide segments, functionalized end groups, and different plasticizer cores) were utilized to tailor the performances of biobased plasticizers for polylactide (PLA). Six plasticizers were developed starting from 1,4-butanediol and isosorbide as cores: two monomeric (1,4-butanediol levulinate and isosorbide levulinate) and four oligomeric plasticizers with hydroxyl or levulinate ester end groups (1,4-butanediol-based oligolactide, isosorbide-based oligolactide, 1,4-butanediol-based oligomeric levulinate, and isosorbide-based oligomeric levulinate). Structural variations in plasticizer design were reflected in the thermal stability, plasticizing efficiency, and migration resistance. The monomeric plasticizer 1,4-butanediol levulinate decreased the glass-transition temperature of PLA from 59 to 16 °C and increased the strain at break substantially from 6 to 227% with 20 wt % addition. 1,4-Butanediol-based oligomeric levulinate exhibited better thermal stability and migration resistance, though the plasticizing efficiency was slightly lower (glass-transition temperature = 28 °C; strain at break = 202%). Compared to PLA films plasticized by plasticizers with flexible butanediol cores, those plasticized by plasticizers with rigid isosorbide cores exhibited higher Young's modulus and thermal stability and lower plasticizing efficiency. Furthermore, plasticizers with levulinate ester end groups had improved thermal stability, plasticizing efficiency, and migration resistance compared to the corresponding plasticizers with hydroxyl end groups. Hence, a set of controlled structural variations in plasticizer design were successfully demonstrated as a potent route to tailor the plasticizer performances.
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7
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Ultra-fast degradable PBAT/PBS foams of high performance in compression and thermal insulation made from environment-friendly supercritical foaming. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2021.105512] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Iglesias-Montes ML, Soccio M, Luzi F, Puglia D, Gazzano M, Lotti N, Manfredi LB, Cyras VP. Evaluation of the Factors Affecting the Disintegration under a Composting Process of Poly(lactic acid)/Poly(3-hydroxybutyrate) (PLA/PHB) Blends. Polymers (Basel) 2021; 13:3171. [PMID: 34578071 PMCID: PMC8472262 DOI: 10.3390/polym13183171] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 11/16/2022] Open
Abstract
The overall migration behavior and the disintegration under composting conditions of films based on plasticized poly(lactic acid)/poly(3-hydroxybutyrate) (PLA-PHB) blends were studied, with the main aim of determining the feasibility of their application as biodegradable food packaging materials. The role of composition in the disintegration process was evaluated by monitoring the changes in physical and thermal properties that originated during the degradation process. PLA and PHB were blended in two weight ratios with 15 wt% of tributyrin, using a Haake mixer and then compression molded into ~150 μm films. We found that the migration level of all of the studied blends was below check intended meaning retained in non-polar simulants, while only plasticized blends could withstand the contact with polar solvents. The disintegration of all of the materials in compost at 58 °C was completed within 42 days; the plasticized PHB underwent the fastest degradation, taking only 14 days. The presence of the TB plasticizer speeded up the degradation process. Different degradation mechanisms were identified for PLA and PHB. To evaluate the annealing effect separately from bacteria degradation, the influence of temperature on materials in the absence of a compost environment was also studied. With the increasing time of degradation in compost, both melting temperature and maximum degradation temperature progressively decreased, while the crystallinity degree increased, indicating that the samples were definitely degrading and that the amorphous regions were preferentially eroded by bacteria.
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Affiliation(s)
- Magdalena L. Iglesias-Montes
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería, Universidad Nacional de Mar del Plata—Consejo de Investigaciones Científicas y Técnicas (CONICET), Mar del Plata 7600, Argentina; (M.L.I.-M.); (L.B.M.)
| | - Michelina Soccio
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, 40131 Bologna, Italy; (M.S.); (N.L.)
| | - Francesca Luzi
- Civil and Environmental Engineering Department, UdR INSTM, University of Perugia, 05100 Terni, Italy; (F.L.); (D.P.)
| | - Debora Puglia
- Civil and Environmental Engineering Department, UdR INSTM, University of Perugia, 05100 Terni, Italy; (F.L.); (D.P.)
| | - Massimo Gazzano
- Institute of Organic Synthesis and Photoreactivity, National Research Council, 40129 Bologna, Italy;
| | - Nadia Lotti
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, 40131 Bologna, Italy; (M.S.); (N.L.)
| | - Liliana B. Manfredi
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería, Universidad Nacional de Mar del Plata—Consejo de Investigaciones Científicas y Técnicas (CONICET), Mar del Plata 7600, Argentina; (M.L.I.-M.); (L.B.M.)
| | - Viviana P. Cyras
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería, Universidad Nacional de Mar del Plata—Consejo de Investigaciones Científicas y Técnicas (CONICET), Mar del Plata 7600, Argentina; (M.L.I.-M.); (L.B.M.)
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9
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Fouquet TNJ, Amalian JA, Aniel N, Carvin-Sergent I, Issa S, Poyer S, Crozet D, Giusti P, Gigmes D, Trimaille T, Charles L. Reactive Desorption Electrospray Ionization Mass Spectrometry To Determine Intrinsic Degradability of Poly(lactic- co-glycolic acid) Chains. Anal Chem 2021; 93:12041-12048. [PMID: 34431672 DOI: 10.1021/acs.analchem.1c02280] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Because of its speed, sensitivity, and ability to scrutinize individual species, mass spectrometry (MS) has become an essential tool in analytical strategies aimed at studying the degradation behavior of polyesters. MS analyses can be performed prior to the degradation event for structural characterization of initial substrates or after it has occurred to measure the decreasing size of products as a function of time. Here, we show that MS can also be usefully employed during the degradation process by online monitoring the chain solvolysis induced by reactive desorption electrospray ionization (DESI). Cleavage of ester bonds in random copolymers of lactic acid (LA) and glycolic acid (GA) was achieved by electrospraying methanol-containing NaOH onto the substrates. Experimental conditions were optimized to generate methanolysis products of high abundance so that mass spectra can be conveniently processed using Kendrick-based approaches. The same reactive-DESI performance was demonstrated for two sample preparations, solvent casting for soluble samples or pressed pellets for highly crystalline substrates, permitting to compare polymers with LA/GA ratios ranging from 100/0 to 5/95. Analysis of sample fractions collected by size exclusion chromatography showed that methanolysis occurs independently of the original chain size, so data recorded for poly(LA-co-GA) (PLAGA) copolymers with the average molecular weight ranging from 10 to 180 kDa could be safely compared. The average mass of methanolysis products was observed to decrease linearly (R2 = 0.9900) as the GA content increases in PLAGA substrates, consistent with the susceptibility of ester bonds toward solvolysis being higher in GA than in LA. Because DESI only explores the surface of solids, these data do not reflect bulk degradability of the copolymers but, instead, their relative degradability at the molecular level. Based on a "reactive-DESI degradability scale" such as that established here for PLAGA, the proposed method offers interesting perspectives to qualify intrinsic degradability of different polyesters and evaluate their erosion susceptibility or to determine the degradability of those polymers known to degrade via erosion only.
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Affiliation(s)
- Thierry N J Fouquet
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Jean-Arthur Amalian
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
| | - Nathan Aniel
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
| | - Isaure Carvin-Sergent
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
| | - Sébastien Issa
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
| | - Salomé Poyer
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
| | - Delphine Crozet
- Total Refining and Chemicals, Total Research & Technology Gonfreville, Harfleur 76700, France
| | - Pierre Giusti
- Total Refining and Chemicals, Total Research & Technology Gonfreville, Harfleur 76700, France.,International Joint laboratory-iC2MC: Complex Matrices Molecular Characterization, Harfleur 76700, France
| | - Didier Gigmes
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
| | - Thomas Trimaille
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
| | - Laurence Charles
- Aix Marseille Université, CNRS, UMR7273, Institut de Chimie Radicalaire, Marseille 13397, France
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10
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Yuntawattana N, Gregory GL, Carrodeguas LP, Williams CK. Switchable Polymerization Catalysis Using a Tin(II) Catalyst and Commercial Monomers to Toughen Poly(l-lactide). ACS Macro Lett 2021; 10:774-779. [PMID: 34306820 PMCID: PMC8296665 DOI: 10.1021/acsmacrolett.1c00216] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/02/2021] [Indexed: 12/15/2022]
Abstract
Sustainable plastics sourced without virgin petrochemicals, that are easily recyclable and with potential for degradation at end of life, are urgently needed. Here, copolymersand blends meeting these criteria are efficiently prepared using a single catalyst and existing commercial monomers l-lactide, propylene oxide, and maleic anhydride. The selective, one-reactor polymerization applies an industry-relevant tin(II) catalyst. Tapered, miscible block polyesters are formed with alkene groups which are postfunctionalized to modulate the polymer glass transition temperature. The polymers are blended at desirable low weight fractions (2 wt %) with commercial poly(l-lactide) (PLLA), increasing toughness, and elongation at break without compromising the elastic modulus, tensile strength, or thermal properties. The selective polymerization catalysis, using commercial monomers and catalyst, provides a straightforward means to improve bioplastics performances.
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Affiliation(s)
- Nattawut Yuntawattana
- Chemistry Research Laboratory,
Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
| | - Georgina L. Gregory
- Chemistry Research Laboratory,
Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
| | - Leticia Peña Carrodeguas
- Chemistry Research Laboratory,
Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
| | - Charlotte K. Williams
- Chemistry Research Laboratory,
Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
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Kovalcik A, Smilek J, Machovsky M, Kalina M, Enev V, Dugova H, Cernekova N, Kovacova M, Spitalsky Z. Properties and structure of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) filaments for fused deposition modelling. Int J Biol Macromol 2021; 183:880-889. [PMID: 33961880 DOI: 10.1016/j.ijbiomac.2021.04.183] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/21/2021] [Accepted: 04/28/2021] [Indexed: 02/06/2023]
Abstract
Fused deposition modelling (FDM) is a process of additive manufacturing allowing creating of highly precise complex three-dimensional objects for a large range of applications. The principle of FDM is an extrusion of the molten filament and gradual deposition of layers and their solidification. Potential applications in pharmaceutical and medical fields require the development of biodegradable and biocompatible thermoplastics for the processing of filaments. In this work, the potential of production of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P(3HB-co-4HB)) filaments for FDM was investigated in respect to its thermal stability. Copolymer P(3HB-co-4HB) was biosynthesised by Cupriavidus malaysiensis. Rheological and mechanical properties of the copolymer were modified by the addition of plasticizers or blending with poly(lactic acid). Thermal stability of mixtures was studied employing thermogravimetric analysis and rheological analyses by monitoring the time-dependent changes in the complex viscosity of melt samples. The plasticization of P(3HB-co-4HB) slightly hindered its thermal degradation but the best stabilization effect was found in case of the copolymer blended with poly(lactic acid). Overall, rheological, thermal and mechanical properties demonstrated that the plasticized P(3HB-co-4HB) is a potential candidate of biodegradable polymer for FDM processes.
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Affiliation(s)
- Adriana Kovalcik
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic.
| | - Jiri Smilek
- Department of Physical and Applied Chemistry, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Michal Machovsky
- Centre of Polymer Systems, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
| | - Michal Kalina
- Department of Physical and Applied Chemistry, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Vojtech Enev
- Department of Physical and Applied Chemistry, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Hana Dugova
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Nicole Cernekova
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Maria Kovacova
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 845 41 Bratislava 45, Slovak Republic
| | - Zdenko Spitalsky
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 845 41 Bratislava 45, Slovak Republic
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12
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Dual-Functioning Antibacterial Eugenol-Derived Plasticizers for Polylactide. Biomolecules 2020; 10:biom10071077. [PMID: 32698323 PMCID: PMC7407572 DOI: 10.3390/biom10071077] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/10/2020] [Accepted: 07/16/2020] [Indexed: 11/21/2022] Open
Abstract
Dual-functioning additives with plasticizing and antibacterial functions were designed by exploiting the natural aromatic compound eugenol and green platform chemical levulinic acid or valeric acid that can be produced from biobased resources. One-pot synthesis methodology was utilized to create three ester-rich plasticizers. The plasticizers were thoroughly characterized by several nuclear magnetic resonance techniques (1H NMR, 13C NMR, 31P NMR, HSQC, COSY, HMBC) and by electrospray ionization-mass spectrometry (ESI-MS) and their performances, as plasticizers for polylactide (PLA), were evaluated. The eugenyl valerate was equipped with a strong capability to depress the glass transition temperature (Tg) of PLA. Incorporating 30 wt% plasticizer led to a reduction of the Tg by 43 °C. This was also reflected by a remarkable change in mechanical properties, illustrated by a strain at break of 560%, almost 110 times the strain for the breaking of neat PLA. The two eugenyl levulinates also led to PLA with significantly increased strain at breaking. The eugenyl levulinates portrayed higher thermal stabilities than eugenyl valerate, both neat and in PLA blends. The different concentrations of phenol, carboxyl and alcohol functional groups in the three plasticizers caused different bactericidal activities. The eugenyl levulinate with the highest phenol-, carboxyl- and alcohol group content significantly inhibited the growth of Staphylococcus aureus and Escherichia coli, while the other two plasticizers could only inhibit the growth of Staphylococcus aureus. Thus, the utilization of eugenol as a building block in plasticizer design for PLA illustrated an interesting potential for production of additives with dual functions, being both plasticizers and antibacterial agents.
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Sakil Mahmud, Long Y, Yang Y, Huang J, Zhang R, Zhu J. The Consequence of Epoxidized Soybean Oil in the Toughening of Polylactide and Micro-Fibrillated Cellulose Blend. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x2001006x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Correa-Pacheco ZN, Black-Solís JD, Ortega-Gudiño P, Sabino-Gutiérrez MA, Benítez-Jiménez JJ, Barajas-Cervantes A, Bautista-Baños S, Hurtado-Colmenares LB. Preparation and Characterization of Bio-Based PLA/PBAT and Cinnamon Essential Oil Polymer Fibers and Life-Cycle Assessment from Hydrolytic Degradation. Polymers (Basel) 2019; 12:E38. [PMID: 31881746 PMCID: PMC7023530 DOI: 10.3390/polym12010038] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/18/2019] [Accepted: 12/22/2019] [Indexed: 01/20/2023] Open
Abstract
Nowadays, the need to reduce the dependence on fuel products and to achieve a sustainable development is of special importance due to environmental concerns. Therefore, new alternatives must be sought. In this work, extruded fibers from poly (lactic acid) (PLA) and poly (butylene adipate-co-terephthalate) (PBAT) added with cinnamon essential oil (CEO) were prepared and characterized, and the hydrolytic degradation was assessed. A two-phase system was observed with spherical particles of PBAT embedded in the PLA matrix. The thermal analysis showed partial miscibility between PLA and PBAT. Mechanically, Young's modulus decreased and the elongation at break increased with the incorporation of PBAT and CEO into the blends. The variation in weight loss for the fibers was below 5% during the period of hydrolytic degradation studied with the most important changes at 37 °C and pH 8.50. From microscopy, the formation of cracks in the fiber surface was evidenced, especially for PLA fibers in alkaline medium at 37 °C. This study shows the importance of the variables that influence the performance of polyester-cinnamon essential oil-based fibers in agro-industrial applications for horticultural product preservation.
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Affiliation(s)
- Zormy Nacary Correa-Pacheco
- CONACYT-Centro de Desarrollo de Productos Bióticos. Instituto Politécnico Nacional, Carretera Yautepec-Jojutla, km 6, calle CEPROBI, No. 8, San Isidro, Yautepec, Morelos 62731, Mexico
| | - Jaime Daniel Black-Solís
- Centro de Desarrollo de Productos Bióticos. Instituto Politécnico Nacional, Carretera Yautepec-Jojutla, Km. 6, calle CEPROBI No. 8, San Isidro, Yautepec, Morelos 62731, Mexico; (J.D.B.-S.); (S.B.-B.)
| | - Pedro Ortega-Gudiño
- Departamento de Ingeniería Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco 44430, Mexico; (P.O.-G.); (A.B.-C.)
| | - Marcos Antonio Sabino-Gutiérrez
- Departamento de Química, Grupo B5IDA, Universidad Simón Bolívar, Apartado 89000, Caracas C. P. 1080-A, Venezuela; (M.A.S.-G.); (L.B.H.-C.)
| | - José Jesús Benítez-Jiménez
- Instituto de Ciencia de Materiales de Sevilla, CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, Isla de la Cartuja, 41092 Sevilla, Spain;
| | - Alfonso Barajas-Cervantes
- Departamento de Ingeniería Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco 44430, Mexico; (P.O.-G.); (A.B.-C.)
| | - Silvia Bautista-Baños
- Centro de Desarrollo de Productos Bióticos. Instituto Politécnico Nacional, Carretera Yautepec-Jojutla, Km. 6, calle CEPROBI No. 8, San Isidro, Yautepec, Morelos 62731, Mexico; (J.D.B.-S.); (S.B.-B.)
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15
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Mahmud S, Long Y, Abu Taher M, Xiong Z, Zhang R, Zhu J. Toughening polylactide by direct blending of cellulose nanocrystals and epoxidized soybean oil. J Appl Polym Sci 2019. [DOI: 10.1002/app.48221] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Sakil Mahmud
- Key Laboratory of Bio‐based Polymeric Materials Technology and Application of Zhejiang ProvinceNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo Zhejiang 315201 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Yu Long
- Key Laboratory of Bio‐based Polymeric Materials Technology and Application of Zhejiang ProvinceNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo Zhejiang 315201 People's Republic of China
| | - Muhammad Abu Taher
- Key Laboratory of Bio‐based Polymeric Materials Technology and Application of Zhejiang ProvinceNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo Zhejiang 315201 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Zhu Xiong
- Key Laboratory of Bio‐based Polymeric Materials Technology and Application of Zhejiang ProvinceNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo Zhejiang 315201 People's Republic of China
| | - Ruoyu Zhang
- Key Laboratory of Bio‐based Polymeric Materials Technology and Application of Zhejiang ProvinceNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo Zhejiang 315201 People's Republic of China
| | - Jin Zhu
- Key Laboratory of Bio‐based Polymeric Materials Technology and Application of Zhejiang ProvinceNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo Zhejiang 315201 People's Republic of China
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16
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Luo L, Chen Q, Wei N, Liu Y, He H, Zhang Y, Yin T, Gou J, Tang X. The modulation of drug-loading stability within lipid membranes via medium chain triglycerides incorporation. Int J Pharm 2019; 566:371-382. [PMID: 31170477 DOI: 10.1016/j.ijpharm.2019.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 05/31/2019] [Accepted: 06/02/2019] [Indexed: 12/18/2022]
Abstract
The current research aimed to explore medium chain triglycerides (MCT) incorporation in liposomes to overcome stability challenges when drugs with high molecular weight and payload are loaded within lipid membranes. A model drug clarithromycin was loaded in lipid dispersions with various MCT/phospholipids ratios (RM/P = 0, 0.5, 1.75 and 7.5 w/w). TEM images demonstrated a liposome-to-emulsion structural transformation by MCT incorporation to cause increased particle size (104.3-167.7 nm) but decreased zeta potential (-63.6 to -44.4 mV) of lipid particles. MCT incorporation produced biphasic release in PBS and accelerated released in plasma. The tolerance of liposomes for thermal sterilization, high temperature test and freeze-thaw cycles were significantly improved by MCT incorporation. However, MCT incorporation produced adverse effects on colloidal stability in plasma and pharmacokinetics behavior in vivo to some extent. MCT stabilizing mechanism attributes to the modulation of drug loading area and stability improvement of lipid carriers. MCT incorporated liposomes achieved 2-3 fold cellular uptake level than traditional liposomes without significant cytotoxicity. These results indicated that MCT incorporation could be a promising strategy to apply in liposome production to achieve stable drug loading.
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Affiliation(s)
- Lifeng Luo
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Qiuyue Chen
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Nana Wei
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Yi Liu
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Haibing He
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Yu Zhang
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Tian Yin
- Department of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Jingxin Gou
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China.
| | - Xing Tang
- Department of Pharmaceutics Science, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China.
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17
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Parallel advances in improving mechanical properties and accelerating degradation to polylactic acid. Int J Biol Macromol 2019; 125:1093-1102. [DOI: 10.1016/j.ijbiomac.2018.12.148] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/13/2018] [Accepted: 12/16/2018] [Indexed: 11/17/2022]
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18
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Kasmi S, Gallos A, Beaugrand J, Paës G, Allais F. Ferulic acid derivatives used as biobased powders for a convenient plasticization of polylactic acid in continuous hot-melt process. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.11.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Patwa R, Kumar A, Katiyar V. Crystallization kinetics, morphology, and hydrolytic degradation of novel bio-based poly(lactic acid)/crystalline silk nano-discs nanobiocomposites. J Appl Polym Sci 2018. [DOI: 10.1002/app.46590] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Rahul Patwa
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati, Assam 781039 India
| | - Amit Kumar
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati, Assam 781039 India
| | - Vimal Katiyar
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati, Assam 781039 India
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20
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Effect of hydrophobic fluoropolymer and crystallinity on the hydrolytic degradation of poly(lactic acid). Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Muroga S, Hikima Y, Ohshima M. Visualization of hydrolysis in polylactide using near-infrared hyperspectral imaging and chemometrics. J Appl Polym Sci 2017. [DOI: 10.1002/app.45898] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Shun Muroga
- Department of Chemical Engineering, Graduate School of Engineering; Katsura-Campus, Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
| | - Yuta Hikima
- Department of Chemical Engineering, Graduate School of Engineering; Katsura-Campus, Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
| | - Masahiro Ohshima
- Department of Chemical Engineering, Graduate School of Engineering; Katsura-Campus, Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
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22
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Fang H, Xie Q, Wei H, Xu P, Ding Y. Physical gelation and macromolecular mobility of sustainable polylactide during isothermal crystallization. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24381] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Huagao Fang
- Department of Polymer Science and Engineering; School of Chemistry and Chemical Engineering, Provincial Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology; Hefei Anhui Province 230009 People's Republic of China
| | - Qizheng Xie
- Department of Polymer Science and Engineering; School of Chemistry and Chemical Engineering, Provincial Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology; Hefei Anhui Province 230009 People's Republic of China
| | - Haibing Wei
- Department of Polymer Science and Engineering; School of Chemistry and Chemical Engineering, Provincial Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology; Hefei Anhui Province 230009 People's Republic of China
| | - Pei Xu
- Department of Polymer Science and Engineering; School of Chemistry and Chemical Engineering, Provincial Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology; Hefei Anhui Province 230009 People's Republic of China
| | - Yunsheng Ding
- Department of Polymer Science and Engineering; School of Chemistry and Chemical Engineering, Provincial Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology; Hefei Anhui Province 230009 People's Republic of China
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23
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Muroga S, Hikima Y, Ohshima M. Near-Infrared Spectroscopic Evaluation of the Water Content of Molded Polylactide under the Effect of Crystallization. APPLIED SPECTROSCOPY 2017; 71:1300-1309. [PMID: 27956596 DOI: 10.1177/0003702816681011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
During melt processing, the moisture inside polylactide (PLA) easily induces hydrolysis, which deteriorates the mechanical and thermal properties of the product. The state of dryness of resin pellets must be monitored to prevent PLA hydrolysis. In this study, near-infrared (NIR) spectroscopy was applied to measure water content in PLA. In addition, the shape of the NIR spectrum is also affected by crystallization, which could lead to a reduction in the accuracy of evaluating the water content. The objective of this research is to construct a robust model for estimating the water content with varying dispersive extents of crystallization. Two methods for estimating water content measured during a drying process were conducted: the integration of absorbance and partial least squares (PLS) regression were conducted to estimate the water contents in PLA considering the effect of crystallization. The slope of the calibration line of the water content obtained from integrating absorbance varied between PLA with different crystallinities. This is due to the overlap between the NIR band of water and that of PLA crystal in the range of 5100-5400 cm-1. We found that the shape of the NIR spectrum was changed by crystallization, and the crystallinity, compared to the thickness of lamellae, was the dominant factor determining such a change of NIR spectra. The PLS model of water content constructed from only amorphous PLA showed large error of estimation in crystallized PLA. In contrast, the PLS model constructed from both amorphous and crystallized PLA estimated the water contents with lower errors. This was because latent variables obtained from both amorphous and crystallized PLA cancelled the effect of crystallization on NIR spectra.
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Affiliation(s)
- Shun Muroga
- Department of Chemical Engineering, Kyoto University, Kyoto, Japan
| | - Yuta Hikima
- Department of Chemical Engineering, Kyoto University, Kyoto, Japan
| | - Masahiro Ohshima
- Department of Chemical Engineering, Kyoto University, Kyoto, Japan
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24
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Evaluation of the temperature and molecular weight dependent migration of di(2-ethylhexyl) phthalate from isotactic polypropylene composites. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Hydrolysis and Biodegradation of Poly(lactic acid). SYNTHESIS, STRUCTURE AND PROPERTIES OF POLY(LACTIC ACID) 2017. [DOI: 10.1007/12_2016_12] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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26
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Pantani R, De Santis F, Auriemma F, De Rosa C, Di Girolamo R. Effects of water sorption on poly(lactic acid). POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Gou J, Chao Y, Liang Y, Zhang N, He H, Yin T, Zhang Y, Xu H, Tang X. Humid Heat Autoclaving of Hybrid Nanoparticles Achieved by Decreased Nanoparticle Concentration and Improved Nanoparticle Stability Using Medium Chain Triglycerides as a Modifier. Pharm Res 2016; 33:2140-51. [PMID: 27251415 DOI: 10.1007/s11095-016-1952-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 05/23/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE Humid heat autoclaving is a facile technique widely used in the sterilization of injections, but the high temperature employed would destroy nanoparticles composed of biodegradable polymers. The aim of this study was to investigate whether incorporation of medium chain triglycerides (MCT) could stabilize nanoparticles composed of poly (ethylene glycol)-b-polycaprolactone (PEG-b-PCL) during autoclaving (121°C, 10 min). METHODS Polymeric nanoparticles with different MCT contents were prepared by dialysis. Block copolymer degradation was studied by GPC. The critical aggregation concentrations of nanoparticles at different temperatures were determined using pyrene fluorescence. The size, morphology and weight averaged molecular weight of pristine/autoclaved nanoparticles were studied using DLS, TEM and SLS, respectively. Drug loading content and release profile were determined using RP-HPLC. RESULTS The protecting effect of MCT on nanoparticles was dependent on the amount of MCT incorporated. Nanoparticles with high MCT contents, which assumed an emulsion-like morphology, showed reduced block copolymer degradation and particle disassociation after incubation at 100°C for 24 h. Nanoparticles with high MCT content showed the lowest critical aggregation concentration (CAC) under either room temperature or 60°C and the lowest particle concentration among all samples. And the particle size, drug loading content, physical stability and release profile of nanoparticles with high MCT contents remained nearly unchanged after autoclaving. CONCLUSION Incorporation of high amount of MCT changed the morphology of PEG-b-PCL based nanoparticles to an emulsion-like structure and the nanoparticles prepared could withstand autoclaving due to improved particle stability and decreased particle concentration caused by MCT incorporation.
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Affiliation(s)
- Jingxin Gou
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Yanhui Chao
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Yuheng Liang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Ning Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Haibing He
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Tian Yin
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Yu Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Hui Xu
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China.
| | - Xing Tang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China.
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28
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Yassin MA, Leknes KN, Sun Y, Lie SA, Finne-Wistrand A, Mustafa K. Surfactant tuning of hydrophilicity of porous degradable copolymer scaffolds promotes cellular proliferation and enhances bone formation. J Biomed Mater Res A 2016; 104:2049-59. [DOI: 10.1002/jbm.a.35741] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/09/2016] [Accepted: 04/06/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Mohammed A. Yassin
- Department of Clinical Dentistry; Faculty of Medicine and Dentistry; University of Bergen; Bergen Norway
| | - Knut N. Leknes
- Department of Clinical Dentistry; Faculty of Medicine and Dentistry; University of Bergen; Bergen Norway
| | - Yang Sun
- Department of Clinical Dentistry; Faculty of Medicine and Dentistry; University of Bergen; Bergen Norway
- Department of Fibre and Polymer Technology; Royal Institute of Technology (KTH); Stockholm Sweden
| | - Stein A. Lie
- Department of Clinical Dentistry; Faculty of Medicine and Dentistry; University of Bergen; Bergen Norway
| | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology; Royal Institute of Technology (KTH); Stockholm Sweden
| | - Kamal Mustafa
- Department of Clinical Dentistry; Faculty of Medicine and Dentistry; University of Bergen; Bergen Norway
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29
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Valapa RB, G P, Katiyar V. Hydrolytic degradation behaviour of sucrose palmitate reinforced poly(lactic acid) nanocomposites. Int J Biol Macromol 2016; 89:70-80. [PMID: 27095433 DOI: 10.1016/j.ijbiomac.2016.04.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 04/08/2016] [Accepted: 04/13/2016] [Indexed: 11/18/2022]
Abstract
This work discusses the influence of novel biofiller, "sucrose palmitate" (SP) on the hydrolytic degradation behavior of poly(lactic acid) (PLA) nanocomposites. The influence of temperature and pH of the solution on the hydrolytic degradation behavior of PLA and PLA-SP nanocomposites was investigated. The variation in the crystallinity of PLA and PLA composites subjected to the hydrolytic degradation process is verified by XRD and DSC analysis. The morphological changes that occurred during the degradation process are observed by scanning electron microscopy (SEM). Thermo-gravimetric analysis confirms the loss of thermal stability of the neat PLA as well as composites after hydrolytic degradation process. Transparency measurements support the enhancement in opacity of both the PLA and PLA-SP nanocomposites with progress in hydrolytic degradation period.
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Affiliation(s)
- Ravi Babu Valapa
- Centre for Biopolymer Science and Technology (CBPST), Kochi, Kerala, 683501, India
| | - Pugazhenthi G
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India.
| | - Vimal Katiyar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India.
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30
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Urbina L, Algar I, García-Astrain C, Gabilondo N, González A, Corcuera M, Eceiza A, Retegi A. Biodegradable composites with improved barrier properties and transparency from the impregnation of PLA to bacterial cellulose membranes. J Appl Polym Sci 2016. [DOI: 10.1002/app.43669] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Leire Urbina
- Materials+Technologies Group; Department of Chemical and Environmental Engineering; University of the Basque Country; Europa Plaza 1 Donostia-San Sebastian 20018 Spain
| | - Itxaso Algar
- Materials+Technologies Group; Department of Chemical and Environmental Engineering; University of the Basque Country; Europa Plaza 1 Donostia-San Sebastian 20018 Spain
| | - Clara García-Astrain
- Materials+Technologies Group; Department of Chemical and Environmental Engineering; University of the Basque Country; Europa Plaza 1 Donostia-San Sebastian 20018 Spain
| | - Nagore Gabilondo
- Materials+Technologies Group; Department of Chemical and Environmental Engineering; University of the Basque Country; Europa Plaza 1 Donostia-San Sebastian 20018 Spain
| | - Alba González
- POLYMAT; Department of Polymer Science and Technology; University of the Basque Country (UPV/EHU); P.O. Box 1072 Donostia/San Sebastián 20080 Spain
| | - MaAngeles Corcuera
- Materials+Technologies Group; Department of Chemical and Environmental Engineering; University of the Basque Country; Europa Plaza 1 Donostia-San Sebastian 20018 Spain
| | - Arantxa Eceiza
- Materials+Technologies Group; Department of Chemical and Environmental Engineering; University of the Basque Country; Europa Plaza 1 Donostia-San Sebastian 20018 Spain
| | - Aloña Retegi
- Materials+Technologies Group; Department of Chemical and Environmental Engineering; University of the Basque Country; Europa Plaza 1 Donostia-San Sebastian 20018 Spain
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31
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Xu H, Yang X, Xie L, Hakkarainen M. Conformational Footprint in Hydrolysis-Induced Nanofibrillation and Crystallization of Poly(lactic acid). Biomacromolecules 2016; 17:985-95. [DOI: 10.1021/acs.biomac.5b01636] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Huan Xu
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xi Yang
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Lan Xie
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Minna Hakkarainen
- Department
of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
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32
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Kakroodi AR, Kazemi Y, Ding W, Ameli A, Park CB. Poly(lactic acid)-Based in Situ Microfibrillar Composites with Enhanced Crystallization Kinetics, Mechanical Properties, Rheological Behavior, and Foaming Ability. Biomacromolecules 2015; 16:3925-35. [PMID: 26536276 DOI: 10.1021/acs.biomac.5b01253] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Melt blending is one of the most promising techniques for eliminating poly(lactic acid)'s (PLA) numerous drawbacks. However, success in a typical melt blending process is usually achieved through the inclusion of high concentrations of a second polymeric phase which can compromise PLA's green nature. In a pioneering study, we introduce the production of in situ microfibrillar PLA/polyamide-6 (PA6) blends as a cost-effective and efficient technique for improving PLA's properties while minimizing the required PA6 content. Predominantly biobased products, with only 3 wt % of in situ generated PA6 microfibrils (diameter ≈200 nm), were shown to have dramatically improved crystallization kinetics, mechanical properties, melt elasticity and strength, and foaming-ability compared with PLA. Crucially, the microfibrillar blends were produced using an environmentally friendly and cost-effective process. Both of these qualities are essential in guarantying the viability of the proposed technique for overcoming the obstacles associated with the vast commercialization of PLA.
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Affiliation(s)
- Adel Ramezani Kakroodi
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto , 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | - Yasamin Kazemi
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto , 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | - WeiDan Ding
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto , 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | - Aboutaleb Ameli
- Advanced Composites Laboratory, School of Mechanical and Materials Engineering, Washington State University Tri-Cities , 2710 Crimson Way, Richland, Washington 99354, United States
| | - Chul B Park
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto , 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
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33
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Lim JH, Kim JA, Ko JA, Park HJ. Preparation and Characterization of Composites Based on Polylactic Acid and Beeswax with Improved Water Vapor Barrier Properties. J Food Sci 2015; 80:E2471-7. [DOI: 10.1111/1750-3841.13081] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 08/18/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Jung Hoon Lim
- Department of Biotechnology, College of Life Sciences and Biotechnology; Korea University; P.O. Box 136-701 Seoul Republic of Korea
- Dept. of Packaging; Lotte R&D Center; 4-Ka, Yangpyong-Dong Youngdeungpo-Ku Seoul Republic of Korea
| | - Jeong Ae Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology; Korea University; P.O. Box 136-701 Seoul Republic of Korea
- Dept. of Packaging; Lotte R&D Center; 4-Ka, Yangpyong-Dong Youngdeungpo-Ku Seoul Republic of Korea
| | - Jung A Ko
- Department of Biotechnology, College of Life Sciences and Biotechnology; Korea University; P.O. Box 136-701 Seoul Republic of Korea
| | - Hyun Jin Park
- Department of Biotechnology, College of Life Sciences and Biotechnology; Korea University; P.O. Box 136-701 Seoul Republic of Korea
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34
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Influence of graphene on thermal degradation and crystallization kinetics behaviour of poly(lactic acid). JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0823-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Spinella S, Cai J, Samuel C, Zhu J, McCallum SA, Habibi Y, Raquez JM, Dubois P, Gross RA. Polylactide/Poly(ω-hydroxytetradecanoic acid) Reactive Blending: A Green Renewable Approach to Improving Polylactide Properties. Biomacromolecules 2015; 16:1818-26. [PMID: 25848833 DOI: 10.1021/acs.biomac.5b00394] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A green manufacturing technique, reactive extrusion (REx), was employed to improve the mechanical properties of polylactide (PLA). To achieve this goal, a fully biosourced PLA based polymer blend was conceived by incorporating small quantities of poly(ω-hydroxytetradecanoic acid) (PC14). PLA/PC14 blends were compatibilized by transesterification reactions promoted by 200 ppm titanium tetrabutoxide (Ti(OBu)4) during REx. REx for 15 min at 150 rpm and 200 °C resulted in enhanced blend mechanical properties while minimizing losses in PLA molecular weight. SEM analysis of the resulting compatibilized phase-separated blends showed good adhesion between dispersed PC14 phases within the continuous PLA phase. Direct evidence for in situ synthesis of PLA-b-PC14 copolymers was obtained by HMBC and HSQC NMR experiments. The size of the dispersed phase was tuned by the screw speed to "tailor" the blend morphology. In the presence of 200 ppm Ti(OBu)4, inclusion of only 5% PC14 increased the elongation at break of PLA from 3 to 140% with only a slight decrease in the tensile modulus (3200 to 2900 MPa). Furthermore, PLA's impact strength was increased by 2.4× that of neat PLA for 20% PC14 blends prepared by REx. Blends of PLA and PC14 are expected to expand the potential uses of PLA-based materials.
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Affiliation(s)
- Stephen Spinella
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States.,‡Department of Chemical and Biomolecular Engineering, NYU Polytechnic School of Engineering, 6 Metrotech Center, Brooklyn, New York 11201, United States.,§Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Jiali Cai
- ‡Department of Chemical and Biomolecular Engineering, NYU Polytechnic School of Engineering, 6 Metrotech Center, Brooklyn, New York 11201, United States
| | - Cedric Samuel
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Jianhui Zhu
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States.,‡Department of Chemical and Biomolecular Engineering, NYU Polytechnic School of Engineering, 6 Metrotech Center, Brooklyn, New York 11201, United States
| | - Scott A McCallum
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
| | - Youssef Habibi
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Jean-Marie Raquez
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Philippe Dubois
- §Centre d'Innovation et de Recherche en MAtériaux Polymères CIRMAP, Service des Matériaux Polymères et Composites, University of Mons, Place du Parc 23, B-7000 Mons, Belgium
| | - Richard A Gross
- †Center for Biotechnology and Interdisciplinary Studies and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
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36
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Yang X, Clénet J, Xu H, Odelius K, Hakkarainen M. Two Step Extrusion Process: From Thermal Recycling of PHB to Plasticized PLA by Reactive Extrusion Grafting of PHB Degradation Products onto PLA Chains. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00235] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Xi Yang
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Jocelyn Clénet
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Huan Xu
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Karin Odelius
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer
Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
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37
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Synthesis and characterization of biodegradable polyurethane for hypopharyngeal tissue engineering. BIOMED RESEARCH INTERNATIONAL 2015; 2015:871202. [PMID: 25839041 PMCID: PMC4369943 DOI: 10.1155/2015/871202] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 01/18/2015] [Accepted: 02/13/2015] [Indexed: 11/17/2022]
Abstract
Biodegradable crosslinked polyurethane (cPU) was synthesized using polyethylene glycol (PEG), L-lactide (L-LA), and hexamethylene diisocyanate (HDI), with iron acetylacetonate (Fe(acac)3) as the catalyst and PEG as the extender. Chemical components of the obtained polymers were characterized by FTIR spectroscopy, (1)H NMR spectra, and Gel Permeation Chromatography (GPC). The thermodynamic properties, mechanical behaviors, surface hydrophilicity, degradability, and cytotoxicity were tested via differential scanning calorimetry (DSC), tensile tests, contact angle measurements, and cell culture. The results show that the synthesized cPU possessed good flexibility with quite low glass transition temperature (T g , -22°C) and good wettability. Water uptake measured as high as 229.7 ± 18.7%. These properties make cPU a good candidate material for engineering soft tissues such as the hypopharynx. In vitro and in vivo tests showed that cPU has the ability to support the growth of human hypopharyngeal fibroblasts and angiogenesis was observed around cPU after it was implanted subcutaneously in SD rats.
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38
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Chen C, He BX, Wang SL, Yuan GP, Zhang L. Unexpected observation of highly thermostable transcrystallinity of poly(lactic acid) induced by aligned carbon nanotubes. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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39
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Yang X, Hakkarainen M. Migration resistant glucose esters as bioplasticizers for polylactide. J Appl Polym Sci 2015. [DOI: 10.1002/app.41928] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xi Yang
- Department of Fibre and Polymer Technology; KTH Royal Institute of Technology; Teknikringen 58 100 44 Stockholm Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology; KTH Royal Institute of Technology; Teknikringen 58 100 44 Stockholm Sweden
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40
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Hydrolytic behavior of poly(lactic acid) films with different architecture modified by poly(dodecafluorheptyl methylacrylate). Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.07.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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41
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Valapa RB, Pugazhenthi G, Katiyar V. Fabrication and characterization of sucrose palmitate reinforced poly(lactic acid) bionanocomposite films. J Appl Polym Sci 2014. [DOI: 10.1002/app.41320] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ravi Babu Valapa
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati- 781039 Assam India
| | - G. Pugazhenthi
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati- 781039 Assam India
| | - Vimal Katiyar
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati- 781039 Assam India
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42
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Xiong Z, Dai X, Na H, Tang Z, Zhang R, Zhu J. A toughened PLA/Nanosilica composite obtained in the presence of epoxidized soybean oil. J Appl Polym Sci 2014. [DOI: 10.1002/app.41220] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Zhu Xiong
- Ningbo Key Lab of Polymer Materials; Ningbo Institute of Materials Technology and Engineering (NIMTE); Chinese Academy of Science Ningbo Zhejiang 315201 People's Republic of China
| | - Xinyan Dai
- Ningbo Key Lab of Polymer Materials; Ningbo Institute of Materials Technology and Engineering (NIMTE); Chinese Academy of Science Ningbo Zhejiang 315201 People's Republic of China
| | - Haining Na
- Ningbo Key Lab of Polymer Materials; Ningbo Institute of Materials Technology and Engineering (NIMTE); Chinese Academy of Science Ningbo Zhejiang 315201 People's Republic of China
| | - Zhaobin Tang
- Ningbo Key Lab of Polymer Materials; Ningbo Institute of Materials Technology and Engineering (NIMTE); Chinese Academy of Science Ningbo Zhejiang 315201 People's Republic of China
| | - Ruoyu Zhang
- Ningbo Key Lab of Polymer Materials; Ningbo Institute of Materials Technology and Engineering (NIMTE); Chinese Academy of Science Ningbo Zhejiang 315201 People's Republic of China
| | - Jin Zhu
- Ningbo Key Lab of Polymer Materials; Ningbo Institute of Materials Technology and Engineering (NIMTE); Chinese Academy of Science Ningbo Zhejiang 315201 People's Republic of China
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43
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In-situ compatibilization of poly(lactic acid) and poly(butylene adipate-co-terephthalate) blends by using dicumyl peroxide as a free-radical initiator. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2014.01.025] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Lei YN, Zhu YB, Gong CF, Lv JJ, Kang C, Hou LX. Synthesis, characterization and cytocompatibility of a degradable polymer using ferric catalyst for esophageal tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:273-282. [PMID: 24150983 DOI: 10.1007/s10856-013-5068-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 10/09/2013] [Indexed: 06/02/2023]
Abstract
This study focused on the synthesis, characterization and cytocompatibility of a biodegradable polymer by the cross-linking from poly(ethylene glycol-co-lactide) dimethacrylate (PLEGDMA), polyethylene glycol diacrylate (PEGDA) and N-isopropylacrylamide, where PLEGDMA was synthesized by ring-opening oligomerization of poly(ethylene glycol) with different molecular weights (Mn = 400, 600, 1000, 2000 Da) and L-lactide using low toxic iron(III) acetylacetonate (Fe(acac)3) as the catalyst and subsequently being terminated with dimethacrylate. The product, PLEGDMA, was analyzed to confirm its chemistry using FTIR spectroscopy, (1)H NMR spectra and gel permeation chromatography etc. The thermodynamic properties, mechanical behaviors, surface hydrophilicity, degradability and cytotoxicity of the cross-linked product were evaluated by differential scanning calorimetry, tensile tests, contact angle measurements and cell cultures. The effects of reaction variables such as PEGDA content and reactants ratio were optimized to achieve a material with low glass transition temperature (Tg), high wettability and preferable mechanical characteristics. Using a tubular mould which has been patented in our group, a tubular scaffold with predetermined dimension and pattern was fabricated, which aims at guiding the growth and phenotype regulation of esophageal primary cells like fibroblast and smooth muscle cell towards fabricating tissue engineered esophagus in future.
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Affiliation(s)
- Yu-Na Lei
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China
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45
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Arias V, Höglund A, Odelius K, Albertsson AC. Tuning the degradation profiles of poly(L-lactide)-based materials through miscibility. Biomacromolecules 2013; 15:391-402. [PMID: 24279455 PMCID: PMC3892759 DOI: 10.1021/bm401667b] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The effective use of biodegradable polymers relies on the ability to control the onset of and time needed for degradation. Preferably, the material properties should be retained throughout the intended time frame, and the material should degrade in a rapid and controlled manner afterward. The degradation profiles of polyester materials were controlled through their miscibility. Systems composed of PLLA blended with poly[(R,S)-3-hydroxybutyrate] (a-PHB) and polypropylene adipate (PPA) with various molar masses were prepared through extrusion. Three different systems were used: miscible (PLLA/a-PHB5 and PLLA/a-PHB20), partially miscible (PLLA/PPA5/comp and PLLA/PPA20/comp), and immiscible (PLLA/PPA5 and PLLA/PPA20) blends. These blends and their respective homopolymers were hydrolytically degraded in water at 37 °C for up to 1 year. The blends exhibited entirely different degradation profiles but showed no diversity between the total degradation times of the materials. PLLA presented a two-stage degradation profile with a rapid decrease in molar mass during the early stages of degradation, similar to the profile of PLLA/a-PHB5. PLLA/a-PHB20 presented a single, constant linear degradation profile. PLLA/PPA5 and PLLA/PPA20 showed completely opposing degradation profiles relative to PLLA, exhibiting a slow initial phase and a rapid decrease after a prolonged degradation time. PLLA/PPA5/comp and PLLA/PPA20/comp had degradation profiles between those of the miscible and the immiscible blends. The molar masses of the materials were approximately the same after 1 year of degradation despite their different profiles. The blend composition and topographical images captured at the last degradation time point demonstrate that the blending component was not leached out during the period of study. The hydrolytic stability of degradable polyester materials can be tailored to obtain different and predetermined degradation profiles for future applications.
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Affiliation(s)
- Veluska Arias
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
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46
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Ghaffar A, Schoenmakers PJ, van der Wal S. Methods for the Chemical Analysis of Degradable Synthetic Polymeric Biomaterials. Crit Rev Anal Chem 2013; 44:23-40. [DOI: 10.1080/10408347.2013.831729] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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47
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Dong W, Zou B, Yan Y, Ma P, Chen M. Effect of chain-extenders on the properties and hydrolytic degradation behavior of the poly(lactide)/poly(butylene adipate-co-terephthalate) blends. Int J Mol Sci 2013; 14:20189-203. [PMID: 24152436 PMCID: PMC3821610 DOI: 10.3390/ijms141020189] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 09/15/2013] [Accepted: 09/23/2013] [Indexed: 11/22/2022] Open
Abstract
Biodegradable poly(lactide)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blends were prepared by reactive blending in the presence of chain-extenders. Two chain-extenders with multi-epoxy groups were studied. The effect of chain-extenders on the morphology, mechanical properties, thermal behavior, and hydrolytic degradation of the blends was investigated. The compatibility between the PLA and PBAT was significantly improved by in situ formation of PLA-co-PBAT copolymers in the presence of the chain-extenders, results in an enhanced ductility of the blends, e.g., the elongation at break was increased to 500% without any decrease in the tensile strength. The differential scanning calorimeter (DSC) results reveal that cold crystallization of PLA was enhanced due to heterogeneous nucleation effect of the in situ compatibilized PBAT domains. As known before, PLA is sensitive to hydrolysis and in the presence of PBAT and the chain-extenders, the hydrolytic degradation of the blend was evident. A three-stage hydrolysis mechanism for the system is proposed based on a study of weight loss and molecular weight reduction of the samples and the pH variation of the degradation medium.
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Affiliation(s)
| | | | | | - Piming Ma
- Authors to whom correspondence should be addressed; E-Mails: (P.M.); (M.C.); Tel./Fax: +86-510-8591-7763 (P.M. & M.C.)
| | - Mingqing Chen
- Authors to whom correspondence should be addressed; E-Mails: (P.M.); (M.C.); Tel./Fax: +86-510-8591-7763 (P.M. & M.C.)
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48
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Arias V, Höglund A, Odelius K, Albertsson A. Polylactides with “green” plasticizers: Influence of isomer composition. J Appl Polym Sci 2013. [DOI: 10.1002/app.39446] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Veluska Arias
- Department of Fiber and Polymer TechnologyKTH Royal Institute of Technology100 44Stockholm Sweden
| | - Anders Höglund
- Department of Fiber and Polymer TechnologyKTH Royal Institute of Technology100 44Stockholm Sweden
| | - Karin Odelius
- Department of Fiber and Polymer TechnologyKTH Royal Institute of Technology100 44Stockholm Sweden
| | - Ann‐Christine Albertsson
- Department of Fiber and Polymer TechnologyKTH Royal Institute of Technology100 44Stockholm Sweden
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49
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Insight into industrial PLA aging process by complementary use of rheology, HPLC, and MALDI. POLYM ADVAN TECHNOL 2013. [DOI: 10.1002/pat.3136] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Effect of PLA grades and morphologies on hydrolytic degradation at composting temperature: Assessment of structural modification and kinetic parameters. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.02.005] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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