1
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Zhao Y, Zhong W. Recent Progress in Advanced Polyester Elastomers for Tissue Engineering and Bioelectronics. Molecules 2023; 28:8025. [PMID: 38138515 PMCID: PMC10745526 DOI: 10.3390/molecules28248025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Polyester elastomers are highly flexible and elastic materials that have demonstrated considerable potential in various biomedical applications including cardiac, vascular, neural, and bone tissue engineering and bioelectronics. Polyesters are desirable candidates for future commercial implants due to their biocompatibility, biodegradability, tunable mechanical properties, and facile synthesis and fabrication methods. The incorporation of bioactive components further improves the therapeutic effects of polyester elastomers in biomedical applications. In this review, novel structural modification methods that contribute to outstanding mechanical behaviors of polyester elastomers are discussed. Recent advances in the application of polyester elastomers in tissue engineering and bioelectronics are outlined and analyzed. A prospective of the future research and development on polyester elastomers is also provided.
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Affiliation(s)
- Yawei Zhao
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
| | - Wen Zhong
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
- Department of Medical Microbiology, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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2
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MacEwan M, Jeng L, Kovács T, Sallade E. Clinical Application of Bioresorbable, Synthetic, Electrospun Matrix in Wound Healing. Bioengineering (Basel) 2022; 10:9. [PMID: 36671580 PMCID: PMC9854990 DOI: 10.3390/bioengineering10010009] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Electrospun polymeric matrices have long been investigated as constructs for use in regenerative medicine, yet relatively few have been commercialized for human clinical use. In 2017, a novel electrospun matrix, composed of two synthetic biocompatible polymers, polyglactin 910 (PLGA 10:90) and polydioxanone (PDO) of varying pore and fiber sizes (i.e., hybrid-scale) was developed and cleared by the FDA for human clinical use. The present review aims to explain the mechanism of action and review the preclinical and clinical results to summarize the efficacy of the matrix across multiple use cases within the wound care setting, including an assessment of over 150 wounds of varying etiologies treated with the synthetic matrix. Clinical data demonstrated effective use of the synthetic hybrid-scale fiber matrix across a variety of wound etiologies, including diabetic foot and venous leg ulcers, pressure ulcers, burns, and surgical wounds. This review represents a comprehensive clinical demonstration of a synthetic, electrospun, hybrid-scale matrix and illustrates its value and versatility across multiple wound etiologies.
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Affiliation(s)
- Matthew MacEwan
- Acera Surgical, 1650 Des Peres Rd. Ste 120., St. Louis, MO 63131, USA
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3
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Wang Y, Huang J, Liang X, Wei M, Liang F, Feng D, Xu C, Xian M, Zou H. Production and waste treatment of polyesters: application of bioresources and biotechniques. Crit Rev Biotechnol 2022; 43:503-520. [PMID: 35430940 DOI: 10.1080/07388551.2022.2039590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chemical resources and techniques have long been used in the history of bulk polyester production and still dominate today's chemical industry. The sustainable development of the polyester industry demands more renewable resources and environmentally benign polyester products. Accordingly, the rapid development of biotechnology has enabled the production of an extensive range of aliphatic and aromatic polyesters from renewable bio-feedstocks. This review addresses the production of representative commercial polyesters (polyhydroxyalkanoates, polylactic acid, poly ε-caprolactone, polybutylene succinate, polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, polyethylene furandicarboxylate, polypropylene furandicarboxylate, and polybutylene furandicarboxylate) or their monomers (lactic acid, succinic acid, 1,4-butanediol, ethylene glycol, terephthalic acid, 1,3-propanediol, and 2,5-furandicarboxylic acid) from renewable bioresources. In addition, this review summarizes advanced biotechniques in the treatment of polyester wastes, representing the near-term trends and future opportunities for waste-to-value recycling and the remediation of polyester wastes under sustainable models. For future prospects, it is essential to further expand: non-food bioresources, optimize bioprocesses and biotechniques in the preparation of bioderived or biodegradable polyesters with promising: material performance, biodegradability, and low production cost.
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Affiliation(s)
- Yaqun Wang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Jingling Huang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Xiuhong Liang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Manman Wei
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Fengbing Liang
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Dexin Feng
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Chao Xu
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Mo Xian
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Huibin Zou
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, China
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
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4
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Kahraman Y, Alkan Goksu Y, Özdemir B, Eker Gümüş B, Nofar M. Composition design of
PLA
/
TPU
emulsion blends compatibilized with multifunctional epoxy‐based chain extender to tackle high impact resistant ductile structures. J Appl Polym Sci 2022. [DOI: 10.1002/app.51833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yusuf Kahraman
- Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering Istanbul Technical University Istanbul Turkey
| | - Yonca Alkan Goksu
- Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering Istanbul Technical University Istanbul Turkey
| | - Burcu Özdemir
- Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering Istanbul Technical University Istanbul Turkey
| | - Beril Eker Gümüş
- Science and Technology Application and Research Center Yıldız Technical University Istanbul Turkey
| | - Mohammadreza Nofar
- Metallurgical & Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering Istanbul Technical University Istanbul Turkey
- Polymer Science and Technology Program, Institute of Science and Technology Istanbul Technical University Istanbul Turkey
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5
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Brunning H, Sallach JB, Zanchi V, Price O, Boxall A. Toward a Framework for Environmental Fate and Exposure Assessment of Polymers. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:515-540. [PMID: 34913523 DOI: 10.1002/etc.5272] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/08/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Development of risk-assessment methodologies for polymers is an emerging regulatory priority to prevent negative environmental impacts; however, the diversity and complexity of polymers require adaptation of existing environmental risk-assessment approaches. The present review discusses the challenges and opportunities for the fate and exposure assessment of polymers in the context of regulatory environmental risk assessment of chemicals. The review discusses the applicability and adequacy for polymers of existing fate parameters used for nonpolymeric compounds and proposes additional parameters that could inform the fate of polymers. The significance of these parameters in various stages of an exposure-assessment framework is highlighted, with classification of polymers as solid or dissolved being key for identification of those parameters most relevant to environmental fate. Considerations to address the key limitations and knowledge gaps are then identified and discussed, specifically the complexity of polymer identification, with the need for characterization of the most significant parameters for polymer grouping and prioritization; the complexity of polymer degradation in the environment, with the need to incorporate the fate and hazards of degradation products into risk assessment; the requirement for development and standardization of analytical methods for characterization of polymer fate properties and degradation products; and the need to develop exposure modeling approaches for polymers. Environ Toxicol Chem 2022;41:515-540. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Hattie Brunning
- Department of Environment and Geography, University of York, York, United Kingdom
| | - J Brett Sallach
- Department of Environment and Geography, University of York, York, United Kingdom
| | | | | | - Alistair Boxall
- Department of Environment and Geography, University of York, York, United Kingdom
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6
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Wei XF, Capezza AJ, Cui Y, Li L, Hakonen A, Liu B, Hedenqvist MS. Millions of microplastics released from a biodegradable polymer during biodegradation/enzymatic hydrolysis. WATER RESEARCH 2022; 211:118068. [PMID: 35066257 DOI: 10.1016/j.watres.2022.118068] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
In this article, we show that enzymatic hydrolysis of a biodegradable polyester (poly(ε-caprolactone)) by Amano Lipase PS in an aqueous (buffer) environment yielded rapidly an excessive number of microplastic particles; merely 0.1 g of poly(ε-caprolactone) film was demonstrated to yield millions of particles. There were also indications of non-enzymatic hydrolysis at the same conditions, but this did not yield any particles within the time frame of the experiment (up to 6 days). Microplastic particles formed had irregular shapes with an average size of around 10 µm, with only a few reaching 60 µm. The formation of microplastic particles resulted from the uneven hydrolysis/erosion rate across the polymer film surface, which led to a rough and undulating surface with ridge, branch, and rod-shaped micro-protruding structures. The consequent detachment and fragmentation of these micro-sized protruding structures resulted in the release of microplastics to the surroundings. Together with microplastics, hydrolysis products such as acidic monomers and oligomers were also released during the enzymatic hydrolysis process, causing a pH decrease in the surrounding liquid. The results suggest that the risk of microplastic pollution from biodegradable plastics is notable despite their biodegradation. Special attention needs to be paid when using and disposing of biodegradable plastics, considering the enormous impact of the paradigm shift towards more biodegradable products on the environment.
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Affiliation(s)
- Xin-Feng Wei
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE, 100 44 Stockholm, Sweden.
| | - Antonio J Capezza
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE, 100 44 Stockholm, Sweden
| | - Yuxiao Cui
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE, 100 44 Stockholm, Sweden
| | - Lengwan Li
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE, 100 44 Stockholm, Sweden
| | - Aron Hakonen
- Sensor Visions AB, SE, 455 22 Hisings Backa, Sweden
| | - Baicang Liu
- Key Laboratory of Deep Earth Science and Engineering (Ministry of Education), College of Architecture and Environment, Institute of New Energy and Low-Carbon Technology, Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu, Sichuan 610207, China
| | - Mikael S Hedenqvist
- Fibre and Polymer Technology, KTH Royal Institute of Technology, SE, 100 44 Stockholm, Sweden.
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7
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De Falco F, Avolio R, Errico ME, Di Pace E, Avella M, Cocca M, Gentile G. Comparison of biodegradable polyesters degradation behavior in sand. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126231. [PMID: 34492985 DOI: 10.1016/j.jhazmat.2021.126231] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/12/2021] [Accepted: 05/24/2021] [Indexed: 06/13/2023]
Abstract
Sandy beaches represent environmental compartments particularly vulnerable to litter pollution, and they reflect the magnitude of pollution of adjacent compartments: water and coastal areas. The substitution of conventional polymers by biodegradable materials is generally considered as an alternative for reducing environmental accumulation of plastic debris. The present study is aimed to investigate the degradation of poly(lactic acid), poly(ε-caprolactone), poly(butylenesuccinate adipate) and poly(3-hydroxybutyrate) buried in sand for 267 days, simulating them as beach litter. The analysed polyesters showed different degradation mechanisms and kinetics. PLA is mainly subjected to weathering by physical aging; after an initial faster degradation of the amorphous phase, PCL showed a decrease of its degradation rate; similarly to PCL, the degradation of PBSA started from the amorphous phase; PHB is clearly subjected to biological degradation. The degradation trend of the investigated materials in sand decreased in the order PHB > PBSA > PCL > PLA. PLA, PCL and PBSA did not undergo complete degradation in sand during the testing time.
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Affiliation(s)
- Francesca De Falco
- Institute for Polymers, Composites and Biomaterials - National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
| | - Roberto Avolio
- Institute for Polymers, Composites and Biomaterials - National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
| | - Maria Emanuela Errico
- Institute for Polymers, Composites and Biomaterials - National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
| | - Emilia Di Pace
- Institute for Polymers, Composites and Biomaterials - National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
| | - Maurizio Avella
- Institute for Polymers, Composites and Biomaterials - National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
| | - Mariacristina Cocca
- Institute for Polymers, Composites and Biomaterials - National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy.
| | - Gennaro Gentile
- Institute for Polymers, Composites and Biomaterials - National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli (NA), Italy
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8
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Sun Q, Sheng J, Yang R. Controllable biodegradation and drug release behavior of chitosan-graft-poly(D, L-lactic acid) synthesized by an efficient method. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2020.109458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Amin M, Bhatti HN, Nawaz S, Bilal M. Penicillium fellutanum lipase as a green and ecofriendly biocatalyst for depolymerization of poly (ɛ-caprolactone): Biochemical, kinetic, and thermodynamic investigations. Biotechnol Appl Biochem 2021; 69:410-419. [PMID: 33559904 DOI: 10.1002/bab.2118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/06/2021] [Indexed: 11/07/2022]
Abstract
Microbial lipases hold a prominent position in biocatalysis by their capability to mediate reactions in aqueous and nonaqueous media. Herein, a lipase from Penicillium fellutanum was biochemically characterized and investigated its potential to degrade poly (ɛ-caprolactone) (PCL). The lipase exhibited stability over a broad pH spectrum and performed best at pH 8.5 and 45 °C. The activation energy was determined to be 66.37 kJ/mol by Arrhenius plot, whereas Km and Vmax for pNPP hydrolysis were 0.75 mM and 83.33 μmol/mL/Min, respectively. A rise in temperature reduced the Gibbs free energy, whereas the enthalpy of thermal unfolding (∆H*) remains the same up to 54 °C following a modest decline at 61 °C. The entropy (∆S*) of the enzyme demonstrated an increasing trend up to 54 °C and dropped at 61 °C. Lipase retained stability by incubation with various industrially relevant organic solvents (benzene, hexanol, ether, and acetone). However, exposure to urea and guanidine hydrochloride influenced its catalytic activity to different extents. Under optimal operating conditions, lipase catalyzed the excellent degradation of PCL film degradation leading to 66% weight loss, increased surface erosion, and crystallinity. Fourier-transform infrared spectrometry, differential scanning calorimetry, and scanning electron microscopy studies monitored the weight loss after enzymatic hydrolysis. The findings indicate that P. fellutanum lipase would be a prospective biocatalytic system for polyesters depolymerization and environmental remediation.
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Affiliation(s)
- Misbah Amin
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Haq Nawaz Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Sadia Nawaz
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an, People's Republic of China
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10
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Barral V, Dropsit S, Cayla A, Campagne C, Devaux É. Study of the Influence of PCL on the In Vitro Degradation of Extruded PLA Monofilaments and Melt-Spun Filaments. Polymers (Basel) 2021; 13:polym13020171. [PMID: 33418932 PMCID: PMC7825054 DOI: 10.3390/polym13020171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/17/2020] [Accepted: 12/30/2020] [Indexed: 11/16/2022] Open
Abstract
This work presents the effect of a melt-spinning process on the degradation behavior of bioresorbable and immiscible poly(d,l-lactide) (PLA) and polycaprolactone (PCL) polymer blends. A large range of these blends, from PLA90PCL10 (90 wt% PLA and 10 wt% PCL) to PLA60PCL40 in increments of 10%, was processed via extrusion (diameter monofilament: ∅ ≈ 1 mm) and melt spinning (80 filaments: 50 to 70 µm each) to evaluate the impact of the PCL ratio and then melt spinning on the hydrolytic degradation of PLA, which allowed for highlighting the potential of a textile-based scaffold in bioresorbable implants. The morphologies of the structures were investigated via extracting PCL with acetic acid and scanning electron microscopy observations. Then, they were immersed in a Dulbecco's Modified Eagle Medium (DMEM) media at 50 °C for 35 days and their properties were tested in order to evaluate the relation between the morphology and the evolution of the crystallinity degree and the mechanical and physical properties. As expected, the incorporation of PCL into the PLA matrix slowed down the hydrolytic degradation. It was shown that the degradation became heterogeneous with a small ratio of PCL. Finally, melt spinning had an impact on the morphology, and consequently, on the other properties over time.
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Affiliation(s)
- Vivien Barral
- ENSAIT, GEMTEX—Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France, 2 Allée Louise et Victor Champier, 59056 Roubaix CEDEX 1, France; (A.C.); (C.C.); (É.D.)
- Correspondence:
| | - Sophie Dropsit
- MATERIA NOVA—R&D CENTER, Avenue Nicolas Copernic 3, 7000 Mons, Belgique;
| | - Aurélie Cayla
- ENSAIT, GEMTEX—Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France, 2 Allée Louise et Victor Champier, 59056 Roubaix CEDEX 1, France; (A.C.); (C.C.); (É.D.)
| | - Christine Campagne
- ENSAIT, GEMTEX—Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France, 2 Allée Louise et Victor Champier, 59056 Roubaix CEDEX 1, France; (A.C.); (C.C.); (É.D.)
| | - Éric Devaux
- ENSAIT, GEMTEX—Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France, 2 Allée Louise et Victor Champier, 59056 Roubaix CEDEX 1, France; (A.C.); (C.C.); (É.D.)
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11
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Zhang Y, He J, Chen H, Xiong C. A new hydrophilic biodegradable ureteral stent restrain encrustation both in vitro and in vivo. J Biomater Appl 2021; 35:720-731. [PMID: 32799701 DOI: 10.1177/0885328220949376] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Ureteral stents have been widely used as biomedical devices to treat some urological diseases for several decades. However, the encrustation complications hamper the long-time clinical use of the ureteral stents. In this work, a new type of biodegradable material for the ureteral stents, methoxypoly(ethylene glycol)-block-poly(L-lactide-ran-Ɛ-caprolactone) (mPEG-PLACL), is evaluated to overcome this problem. The results show that the hydrophilicity and degradation rate in artificial urine of mPEG-PLACL are both significantly increased. It is worth noting that the mPEG-PLACL shows a lower amount of encrustation after immersing the stents in the dynamic urinary extracorporeal circulation (DUEC) model for 7 days. In addition, 71% Ca and 92% Mg are inhibited in vivo by quantitative analysis. Pathological analysis exhibit that the mPEG-PLACL cause less diffuse mucosal hyperplasia after 7 weeks of implantation. All the results indicate that this new type of biodegradable material had an excellent potential for the ureteral stents in the future.
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Affiliation(s)
- Yu Zhang
- 26444Chengdu Institute of Organic Chemistry CAS, Chengdu, China
| | - Jian He
- 26444Chengdu Institute of Organic Chemistry CAS, Chengdu, China
| | - Hechun Chen
- 26444Chengdu Institute of Organic Chemistry CAS, Chengdu, China
| | - Chengdong Xiong
- 26444Chengdu Institute of Organic Chemistry CAS, Chengdu, China
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12
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Composition-property relationship of polyurethane networks based on polycaprolactone diol. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03473-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Ponjavic M, Nikolic MS, Stevanovic S, Nikodinovic-Runic J, Jeremic S, Pavic A, Djonlagic J. Hydrolytic degradation of star-shaped poly(ε-caprolactone)s with different number of arms and their cytotoxic effects. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520951826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Star-shaped polymers of biodegradable aliphatic polyester, poly( ε-caprolactone), PCL, with different number of arms (three, four, and six) were synthesized by ring-opening polymerization initiated by multifunctional alcohols used as cores. As potential biomaterials, synthesized star-shaped poly( ε-caprolactone)s, sPCL, were thoroughly characterized in terms of their degradation under different pH conditions and in respect to their cytotoxicity. The in vitro degradation was performed in phosphate buffer (pH 7.4) and hydrochloric acid solution (pH 1.0) over 5 weeks. Degradation of sPCL films was followed by the weight loss measurements, GPC, FTIR, and AFM analysis. While the most of the samples were stable against the abiotic hydrolysis at pH 7.4 after 5 weeks of degradation, degradation was significantly accelerated in the acidic medium. Degradation rate of polymer films was affected by the polymer architecture and molecular weight. The molecular weight profiles during the degradation revealed random chain scission of the ester bonds indicating bulk degradation mechanism of hydrolysis at pH 7.4, while acidic hydrolysis proceeded through the bulk degradation associated with surface erosion, confirmed by AFM. The in vitro toxicity tests, cytotoxicity applying normal human fibroblasts (MRC5) and embryotoxicity assessment (using zebra fish model, Danio rerio), suggested those polymeric materials as suitable for biomedical application.
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Affiliation(s)
- Marijana Ponjavic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Marija S Nikolic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Sanja Stevanovic
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | | | - Sanja Jeremic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Aleksandar Pavic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Jasna Djonlagic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
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14
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Li Q, Li L, Yu M, Zheng M, Li Y, Yang J, Dai M, Zhong L, Sun L, Lu D. Elastomeric polyurethane porous film functionalized with gastrodin for peripheral nerve regeneration. J Biomed Mater Res A 2020; 108:1713-1725. [PMID: 32196902 DOI: 10.1002/jbm.a.36937] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Qing Li
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Limei Li
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Mali Yu
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Meng Zheng
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Yao Li
- Department of StomatologyThe First People's Hospital of Yunnan Provience Kunming China
| | - Jian Yang
- Department of Biomedical EngineeringMaterials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University University Park Pennsylvania USA
| | - Min Dai
- Department of Second CardiologyThe Third People's Hospital of Kunming Kunming China
| | - Lianmei Zhong
- Department of NeurologyThe First Affiliated Hospital, Kunming Medical University Kunming China
| | - Lin Sun
- Department of CardiologyThe Second Affiliated Hospital, Kunming Medical University Kunming China
| | - Di Lu
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
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15
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Synthesis Strategies for Biomedical Grade Polymers. MATERIALS HORIZONS: FROM NATURE TO NANOMATERIALS 2020. [DOI: 10.1007/978-981-15-1251-3_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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16
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Xu Y, Chen C, Hellwarth PB, Bao X. Biomaterials for stem cell engineering and biomanufacturing. Bioact Mater 2019; 4:366-379. [PMID: 31872161 PMCID: PMC6909203 DOI: 10.1016/j.bioactmat.2019.11.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/09/2019] [Accepted: 11/20/2019] [Indexed: 12/15/2022] Open
Abstract
Recent years have witnessed the expansion of tissue failures and diseases. The uprising of regenerative medicine converges the sight onto stem cell-biomaterial based therapy. Tissue engineering and regenerative medicine proposes the strategy of constructing spatially, mechanically, chemically and biologically designed biomaterials for stem cells to grow and differentiate. Therefore, this paper summarized the basic properties of embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs) and adult stem cells. The properties of frequently used biomaterials were also described in terms of natural and synthetic origins. Particularly, the combination of stem cells and biomaterials for tissue repair applications was reviewed in terms of nervous, cardiovascular, pancreatic, hematopoietic and musculoskeletal system. Finally, stem-cell-related biomanufacturing was envisioned and the novel biofabrication technologies were discussed, enlightening a promising route for the future advancement of large-scale stem cell-biomaterial based therapeutic manufacturing.
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Affiliation(s)
| | | | | | - Xiaoping Bao
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, West Lafayette, IN, 47907, USA
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17
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Scaffaro R, Maio A, Sutera F, Gulino EF, Morreale M. Degradation and Recycling of Films Based on Biodegradable Polymers: A Short Review. Polymers (Basel) 2019; 11:E651. [PMID: 30970659 PMCID: PMC6523205 DOI: 10.3390/polym11040651] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/05/2019] [Accepted: 04/08/2019] [Indexed: 11/16/2022] Open
Abstract
The environmental performance of biodegradable materials has attracted attention from the academic and the industrial research over the recent years. Currently, degradation behavior and possible recyclability features, as well as actual recycling paths of such systems, are crucial to give them both durability and eco-sustainability. This paper presents a review of the degradation behaviour of biodegradable polymers and related composites, with particular concern for multi-layer films. The processing of biodegradable polymeric films and the manufacturing and properties of multilayer films based on biodegradable polymers will be discussed. The results and data collected show that: poly-lactic acid (PLA), poly-butylene adipate-co-terephthalate (PBAT) and poly-caprolactone (PCL) are the most used biodegradable polymers, but are prone to hydrolytic degradation during processing; environmental degradation is favored by enzymes, and can take place within weeks, while in water it can take from months to years; thermal degradation during recycling basically follows a hydrolytic path, due to moisture and high temperatures (β-scissions and transesterification) which may compromise processing and recycling; ultraviolet (UV) and thermal stabilization can be adequately performed using suitable stabilizers.
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Affiliation(s)
- Roberto Scaffaro
- University of Palermo, Department of Engineering, Viale delle Scienze, 90128 Palermo, Italy.
| | - Andrea Maio
- University of Palermo, Department of Engineering, Viale delle Scienze, 90128 Palermo, Italy.
| | - Fiorenza Sutera
- University of Palermo, Department of Engineering, Viale delle Scienze, 90128 Palermo, Italy.
| | | | - Marco Morreale
- Kore University of Enna, Faculty of Engineering and Architecture, Cittadella Universitaria, 94100 Enna, Italy.
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18
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De Paula MMM, Bassous NJ, Afewerki S, Harb SV, Ghannadian P, Marciano FR, Viana BC, Tim CR, Webster TJ, Lobo AO. Understanding the impact of crosslinked PCL/PEG/GelMA electrospun nanofibers on bactericidal activity. PLoS One 2018; 13:e0209386. [PMID: 30571704 PMCID: PMC6301679 DOI: 10.1371/journal.pone.0209386] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/28/2018] [Indexed: 12/14/2022] Open
Abstract
Herein, we report the design of electrospun ultrathin fibers based on the combination of three different polymers polycaprolactone (PCL), polyethylene glycol (PEG), and gelatin methacryloyl (GelMA), and their potential bactericidal activity against three different bacteria Staphylococcus aureus (S. aureus), Pseudomonas aeruginosa (P. aeruginosa), and Methicillin-resistant Staphylococcus aureus (MRSA). We evaluated the morphology, chemical structure and wettability before and after UV photocrosslinking of the produced scaffolds. Results showed that the developed scaffolds presented hydrophilic properties after PEG and GelMA incorporation. Moreover, they were able to significantly reduce gram-positive, negative, and MRSA bacteria mainly after UV photocrosslinking (PCL:PEG:GelMa-UV). Furthermore, we performed a series of study for gaining a better mechanistic understanding of the scaffolds bactericidal activity through protein adsorption study and analysis of the reactive oxygen species (ROS) levels. Furthermore, the in vivo subcutaneous implantation performed in rats confirmed the biocompatibility of our designed scaffolds.
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Affiliation(s)
- Mirian Michelle Machado De Paula
- Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, United States of America
| | - Nicole Joy Bassous
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, United States of America
| | - Samson Afewerki
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Division of Gastroenterology, Brigham and Women´s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Samarah Vargas Harb
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, United States of America
- Institute of Chemistry, UNESP-São Paulo State University, Araraquara, São Paulo, Brazil
| | - Paria Ghannadian
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, United States of America
| | - Fernanda Roberta Marciano
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, United States of America
- Institute of Science and Technology, Brasil University, São Paulo, SP, Brazil
| | - Bartolomeu Cruz Viana
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, PPGCM-Materials Science and Engineering graduate program, UFPI-Federal University of Piauí, Teresina, PI, Brazil
- Department of Physics, UFPI-Federal University of Piauí, Teresina, PI, Brazil
| | - Carla Roberta Tim
- Institute of Science and Technology, Brasil University, São Paulo, SP, Brazil
| | - Thomas Jay Webster
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, United States of America
| | - Anderson Oliveira Lobo
- Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil
- Institute of Science and Technology, Brasil University, São Paulo, SP, Brazil
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, PPGCM-Materials Science and Engineering graduate program, UFPI-Federal University of Piauí, Teresina, PI, Brazil
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- * E-mail: ,
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19
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Poly (lactic acid) blends: Processing, properties and applications. Int J Biol Macromol 2018; 125:307-360. [PMID: 30528997 DOI: 10.1016/j.ijbiomac.2018.12.002] [Citation(s) in RCA: 285] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/29/2018] [Accepted: 12/01/2018] [Indexed: 11/21/2022]
Abstract
Poly (lactic acid) or polylactide (PLA) is a commercial biobased, biodegradable, biocompatible, compostable and non-toxic polymer that has competitive material and processing costs and desirable mechanical properties. Thereby, it can be considered favorably for biomedical applications and as the most promising substitute for petroleum-based polymers in a wide range of commodity and engineering applications. However, PLA has some significant shortcomings such as low melt strength, slow crystallization rate, poor processability, high brittleness, low toughness, and low service temperature, which limit its applications. To overcome these limitations, blending PLA with other polymers is an inexpensive approach that could also tailor the final properties of PLA-based products. During the last two decades, researchers investigated the synthesis, processing, properties, and development of various PLA-based blend systems including miscible blends of poly l-lactide (PLLA) and poly d-lactide (PDLA), which generate stereocomplex crystals, binary immiscible/miscible blends of PLA with other thermoplastics, multifunctional ternary blends using a third polymer or fillers such as nanoparticles, as well as PLA-based blend foam systems. This article reviews all these investigations and compares the syntheses/processing-morphology-properties interrelationships in PLA-based blends developed so far for various applications.
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20
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Chemical stability, mass loss and hydrolysis mechanism of sterile and non-sterile lipid-core nanocapsules: The influence of the molar mass of the polymer wall. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.09.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Poly-ε-caprolactone/polysulfhydrylated polyester blend: A platform for topical and degradable nitric oxide-releasing materials. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.09.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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22
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Wang W, Wei Z, Sang L, Wang Y, Zhang J, Bian Y, Li Y. Development of X-ray opaque poly(lactic acid) end-capped by triiodobenzoic acid towards non-invasive micro-CT imaging biodegradable embolic microspheres. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.09.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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23
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Bedair TM, Min IJ, Park W, Joung YK, Han DK. Sustained drug release using cobalt oxide nanowires for the preparation of polymer-free drug-eluting stents. J Biomater Appl 2018; 33:352-362. [PMID: 30223735 DOI: 10.1177/0885328218792141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polymer-based drug-eluting stents (DESs) represented attractive application for the treatment of cardiovascular diseases; however, polymer coating has caused serious adverse responses to tissues such as chronic inflammation due to acidic by-products. Therefore, polymer-free DESs have recently emerged as promising candidates for the treatment; however, burst release of drug(s) from the surface limited its applications. In this study, we focused on delivery of therapeutic drug from polymer-free (or -less) DESs through surface modification using cobalt oxide nanowires (Co3O4 NWs) to improve and control the drug release. The results demonstrated that Co3O4 NWs could be simply fabricated on cobalt-chromium substrate by ammonia-evaporation-induced method. The Co3O4 NWs were uniformly arrayed with diameters of 50-100 nm and lengths of 10 µm. It was found that Co3O4 NWs were comparatively stable without any delamination or change of the morphology under in vitro long-term stability using circulating system. Sirolimus was used as a model drug for studying in vitro release behavior under physiological conditions. The sirolimus release behavior from flat cobalt-chromium showed an initial burst (over 90%) after one day. On the other hand, Co3O4 NWs presented a sustained sirolimus release rate for up to seven days. Similarly, the polymer-less specimens on Co3O4 NWs substrates sustained sirolimus release for a longer-period of time when compared to flat Co-Cr substrates. In summary, the current approach of using Co3O4 NWs-based substrates might have a great potential to sustain drug release for drug-eluting implants and medical devices including stents.
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Affiliation(s)
- Tarek M Bedair
- 1 Department of Biomedical Science, CHA University, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi, Republic of Korea.,2 Chemistry Department, Faculty of Science, Minia University, El-Minia, Egypt.,3 Center for Biomaterials, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Il Jae Min
- 3 Center for Biomaterials, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Wooram Park
- 1 Department of Biomedical Science, CHA University, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi, Republic of Korea
| | - Yoon Ki Joung
- 3 Center for Biomaterials, Korea Institute of Science and Technology, Seoul, Republic of Korea.,4 Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Dong Keun Han
- 1 Department of Biomedical Science, CHA University, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi, Republic of Korea
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24
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Dual-Layer Coated Drug-Eluting Stents with Improved Degradation Morphology and Controlled Drug Release. Macromol Res 2018. [DOI: 10.1007/s13233-018-6110-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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25
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Zhang H, Wang C, Xu Y, Huang X, He X, Zhang C, Lu J. Pressure-controlled crystallization of stereocomplex crystals in enantiomeric polylactides with remarkably enhanced hydrolytic degradation. CrystEngComm 2018. [DOI: 10.1039/c8ce01199k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Enantiomeric biopolymers, with improved combinatorial heat resistance, hydrolytic degradation and hydrophilicity, were fabricated by pressure-controlled crystallization of stereocomplex crystals.
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Affiliation(s)
- Huanhuan Zhang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Chuanfeng Wang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Yali Xu
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Xi Huang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Xuebing He
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
| | - Chaoliang Zhang
- State Key Laboratory of Oral Diseases
- West China Hospital of Stomatology
- Sichuan University
- Chengdu 610041
- China
| | - Jun Lu
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
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26
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Pijpers IAB, Abdelmohsen LKEA, Williams DS, van Hest JCM. Morphology Under Control: Engineering Biodegradable Stomatocytes. ACS Macro Lett 2017; 6:1217-1222. [PMID: 29214115 PMCID: PMC5708263 DOI: 10.1021/acsmacrolett.7b00723] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 10/17/2017] [Indexed: 12/27/2022]
Abstract
Biodegradable nanoarchitectures, with well-defined morphological features, are of great importance for nanomedical research; however, understanding (and thereby engineering) their formation is a substantial challenge. Herein, we uncover the supramolecular potential of PEG-PDLLA copolymers by exploring the physicochemical determinants that result in the transformation of spherical polymersomes into stomatocytes. To this end, we have engineered blended polymersomes (comprising copolymers with varying lengths of PEG), which undergo solvent-dependent reorganization inducing negative spontaneous membrane curvature. Under conditions of anisotropic solvent composition across the PDLLA membrane, facilitated by the dialysis methodology, we demonstrate osmotically induced stomatocyte formation as a consequence of changes in PEG solvation, inducing negative spontaneous membrane curvature. Controlled formation of unprecedented, biodegradable stomatocytes represents the unification of supramolecular engineering with the theoretical understanding of shape transformation phenomena.
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Affiliation(s)
- Imke A. B. Pijpers
- Eindhoven University of Technology, P.O. Box 513
(STO 3.31), 5600MB Eindhoven, The Netherlands
| | | | - David S. Williams
- Eindhoven University of Technology, P.O. Box 513
(STO 3.31), 5600MB Eindhoven, The Netherlands
- Department
of Chemistry, Swansea University, Swansea SA2 8PP, United Kingdom
| | - Jan C. M. van Hest
- Eindhoven University of Technology, P.O. Box 513
(STO 3.31), 5600MB Eindhoven, The Netherlands
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27
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Nakayama Y, Aihara K, Cai Z, Shiono T, Tsutsumi C. Synthesis and Biodegradation of Poly(l-lactide-co-β-propiolactone). Int J Mol Sci 2017; 18:E1312. [PMID: 28632154 PMCID: PMC5486133 DOI: 10.3390/ijms18061312] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 05/26/2017] [Accepted: 06/13/2017] [Indexed: 11/24/2022] Open
Abstract
Although the copolymerizations of l-lactide (LA) with seven- or six-membered ring lactones have been extensively studied, the copolymerizations of LA with four-membered ring lactones have scarcely been reported. In this work, we studied the copolymerization of LA with β-propiolactone (PL) and the properties of the obtained copolymers. The copolymerization of LA with PL was carried out using trifluoromethanesulfonic acid as a catalyst and methanol as an initiator to produce poly(LA-co-PL) with Mn of ~50,000 and PL-content of 6-67 mol %. The Tg values of the copolymers were rapidly lowered with increasing PL-contents. The Tm and ΔHm of the copolymers gradually decreased with increasing PL-contents, indicating their decreased crystallinity. Biodegradation test of the copolymers in compost demonstrated their improved biodegradability in comparison with the homopolymer of LA.
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Affiliation(s)
- Yuushou Nakayama
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
| | - Kazuki Aihara
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Takeshi Shiono
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
| | - Chikara Tsutsumi
- Department of Applied Chemistry and Biotechnology, Niihama National College of Technology, Niihama 792-8580, Japan.
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28
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Ilsouk M, Raihane M, Lahcini M, Meri RM, Zicāns J, Cimdina LB, Kharas GB. Bionanocomposites poly(ϵ-caprolactone)/organomodified Moroccan beidellite clay prepared byin situring opening polymerization: Characterizations and properties. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1282229] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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29
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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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30
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Abdelmohsen LKA, Williams DS, Pille J, Ozel SG, Rikken RSM, Wilson DA, van Hest JCM. Formation of Well-Defined, Functional Nanotubes via Osmotically Induced Shape Transformation of Biodegradable Polymersomes. J Am Chem Soc 2016; 138:9353-6. [PMID: 27374777 PMCID: PMC4974604 DOI: 10.1021/jacs.6b03984] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Indexed: 01/29/2023]
Abstract
Polymersomes are robust, versatile nanostructures that can be tailored by varying the chemical structure of copolymeric building blocks, giving control over their size, shape, surface chemistry, and membrane permeability. In particular, the generation of nonspherical nanostructures has attracted much attention recently, as it has been demonstrated that shape affects function in a biomedical context. Until now, nonspherical polymersomes have only been constructed from nondegradable building blocks, hampering a detailed investigation of shape effects in nanomedicine for this category of nanostructures. Herein, we demonstrate the spontaneous elongation of spherical polymersomes comprising the biodegradable copolymer poly(ethylene glycol)-b-poly(d,l-lactide) into well-defined nanotubes. The size of these tubes is osmotically controlled using dialysis, which makes them very easy to prepare. To confirm their utility for biomedical applications, we have demonstrated that, alongside drug loading, functional proteins can be tethered to the surface utilizing bio-orthogonal "click" chemistry. In this way the present findings establish a novel platform for the creation of biocompatible, high-aspect ratio nanoparticles for biomedical research.
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Affiliation(s)
| | | | - Jan Pille
- Institute for Molecules and
Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Sema G. Ozel
- Institute for Molecules and
Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Roger S. M. Rikken
- Institute for Molecules and
Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Daniela A. Wilson
- Institute for Molecules and
Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Jan C. M. van Hest
- Institute for Molecules and
Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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31
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Garcia-Garcia D, Ferri JM, Boronat T, Lopez-Martinez J, Balart R. Processing and characterization of binary poly(hydroxybutyrate) (PHB) and poly(caprolactone) (PCL) blends with improved impact properties. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1659-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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32
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Steffens D, Mathor MB, Santi BTS, Luco DP, Pranke P. Development of a biomaterial associated with mesenchymal stem cells and keratinocytes for use as a skin substitute. Regen Med 2015; 10:975-87. [PMID: 26542841 DOI: 10.2217/rme.15.58] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIM The present study has aimed to produce a cutaneous substitute, bringing together stem cells (mesenchymal stem cells) and keratinocytes, and an electrospun biomaterial. MATERIALS & METHODS Three groups of scaffolds were studied: group 1, poly-dl-lactic acid (PDLLA); group 2, hydrolyzed PDLLA (PDLLA/NaOH) and group 3, PDLLA/Lam - a PDLLA/NaOH scaffold linked to laminin protein. They were characterized by physicochemical and biological parameters. RESULTS As a result, the scaffolds presented well-formed and randomly distributed fibers. Group 3 showed the greatest hydrophilic characteristics. Group 1 showed a greater degradation rate after 14 days. Groups 2 and 3 presented molecular weight of about 40-50 Da. In general, group 3 showed the best results concerning cell adhesion and viability. CONCLUSION This study associated two revolutionary fields, stem cells and nanotechnology, for use in regenerative medicine.
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Affiliation(s)
- Daniela Steffens
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil.,Post-graduate Program in Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90050-170, Brazil
| | - Monica B Mathor
- Instituto de Pesquisas Energéticas e Nucleares, São Paulo, 05508-000, Brazil
| | - Bruna T S Santi
- Post-graduate Program in Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90050-170, Brazil
| | - Dayane P Luco
- Stem Cell Research Institute (Instituto de Pesquisa com Células-tronco), Porto Alegre, Rio Grande do Sul 90020-010, Brazil
| | - Patricia Pranke
- Hematology & Stem Cell Laboratory, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil.,Post-graduate Program in Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90050-170, Brazil.,Stem Cell Research Institute (Instituto de Pesquisa com Células-tronco), Porto Alegre, Rio Grande do Sul 90020-010, Brazil
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33
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Effects of interfacial layer wettability and thickness on the coating morphology and sirolimus release for drug-eluting stent. J Colloid Interface Sci 2015; 460:189-99. [PMID: 26319336 DOI: 10.1016/j.jcis.2015.08.051] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 08/13/2015] [Accepted: 08/22/2015] [Indexed: 01/19/2023]
Abstract
Drug-eluting stents (DESs) have been used to treat coronary artery diseases by placing in the arteries. However, current DESs still suffer from polymer coating defects such as delamination and peeling-off that follows stent deployment. Such coating defects could increase the roughness of DES and might act as a source of late or very late thrombosis and might increase the incident of restenosis. In this regard, we modified the cobalt-chromium (Co-Cr) alloy surface with hydrophilic poly(2-hydroxyethyl methacrylate) (PHEMA) or hydrophobic poly(2-hydroxyethyl methacrylate)-grafted-poly(caprolactone) (PHEMA-g-PCL) brushes. The resulting surfaces were biocompatible and biodegradable, which could act as anchoring layer for the drug-in-polymer matrix coating. The two modifications were characterized by ATR-FTIR, XPS, water contact angle measurements, SEM and AFM. On the control and modified Co-Cr samples, a sirolimus (SRL)-containing poly(D,L-lactide) (PDLLA) were ultrasonically spray-coated, and the drug release was examined for 8weeks under physiological conditions. The results demonstrated that PHEMA as a primer coating improved the coating stability and degradation morphology, and drug release profile for short-term as compared to control Co-Cr, but fails after 7weeks in physiological buffer. On the other hand, the hydrophobic PHEMA-g-PCL brushes not only enhanced the stability and degradation morphology of the PDLLA coating layer, but also sustained SRL release for long-term. At 8-week of release test, the surface morphologies and release profiles of coated PDLLA layers verified the beneficial effect of hydrophobic PCL brushes as well as their thickness on coating stability. Our study concludes that 200nm thickness of PHEMA-g-PCL as interfacial layer affects the stability and degradation morphology of the biodegradable coating intensively to be applied for various biodegradable-based DESs.
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35
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Improvement of cytocompatibility of polylactide by filling with marine algae powder. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 50:309-16. [PMID: 25746275 DOI: 10.1016/j.msec.2015.02.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 01/11/2015] [Accepted: 02/09/2015] [Indexed: 11/21/2022]
Abstract
This work evaluated the cytocompatibility, thermal and mechanical properties of composites of polylactide (PLA) and marine algae powder (MAP). To improve the thermal and mechanical properties of PLA-MAP composites, glycidyl methacrylate (GMA) was used as the compatibilizer for the blending of PLA and MAP. The PLA-g-GMA/MAP composites exhibited superior mechanical properties, attributing to higher compatibility between the polymer and MAP, comparing to PLA/MAP composites. The dispersion of MAP in the PLA-g-GMA matrix was highly homogeneous as a result of etherification. The lower melt torque of the PLA-g-GMA/MAP composites also made them more processable than PLA/MAP. To assess the cytocompatibility, normal human foreskin fibroblasts (FBs) were seeded onto each type of the composites. Results of FB proliferation, collagen production, and cytotoxicity assays indicated greater cytocompatibility for the PLA/MAP composites than for the PLA-g-GMA/MAP composites. Furthermore, both PLA/MAP and PLA-g-GMA/MAP composites were more cytocompatible than pure PLA.
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Gratia A, Merlet D, Ducruet V, Lyathaud C. A comprehensive NMR methodology to assess the composition of biobased and biodegradable polymers in contact with food. Anal Chim Acta 2015; 853:477-485. [DOI: 10.1016/j.aca.2014.09.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 09/18/2014] [Accepted: 09/25/2014] [Indexed: 01/26/2023]
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Ross S, Mahasaranon S, Ross GM. Ternary polymer blends based on poly(lactic acid): Effect of stereo-regularity and molecular weight. J Appl Polym Sci 2014. [DOI: 10.1002/app.41780] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Sukunya Ross
- Department of Chemistry; Faculty of Science; Naresuan University; Phitsanulok 65000 Thailand
- Biomaterials Center of Excellence; Faculty of Science; Naresuan University; Phitsanulok 65000 Thailand
| | - Sararat Mahasaranon
- Department of Chemistry; Faculty of Science; Naresuan University; Phitsanulok 65000 Thailand
| | - Gareth M. Ross
- Biomaterials Center of Excellence; Faculty of Science; Naresuan University; Phitsanulok 65000 Thailand
- Lower Northern Science Park; Naresuan University; Phitsanulok 65000 Thailand
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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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Shibata M, Teramoto N, Hoshino K, Takase H, Shibita A. Thermal and mechanical properties of semi-interpenetrating polymer networks composed of diisocyanate-bridged, four-armed, star-shaped ε-caprolactone oligomers and poly(ε-caprolactone). J Appl Polym Sci 2013. [DOI: 10.1002/app.39551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mitsuhiro Shibata
- Department of Life and Environmental Sciences; Faculty of Engineering; Chiba Institute of Technology; 2-17-1, Tsudanuma, Narashino, Chiba 275-0016; Japan
| | - Naozumi Teramoto
- Department of Life and Environmental Sciences; Faculty of Engineering; Chiba Institute of Technology; 2-17-1, Tsudanuma, Narashino, Chiba 275-0016; Japan
| | - Kyohei Hoshino
- Department of Life and Environmental Sciences; Faculty of Engineering; Chiba Institute of Technology; 2-17-1, Tsudanuma, Narashino, Chiba 275-0016; Japan
| | - Hayato Takase
- Department of Life and Environmental Sciences; Faculty of Engineering; Chiba Institute of Technology; 2-17-1, Tsudanuma, Narashino, Chiba 275-0016; Japan
| | - Ayaka Shibita
- Department of Life and Environmental Sciences; Faculty of Engineering; Chiba Institute of Technology; 2-17-1, Tsudanuma, Narashino, Chiba 275-0016; Japan
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