1
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Ma F, Gao Y, Xie W, Wu D. Effect of hydrophobic modification of chitin nanocrystals on role as anti-nucleator in the crystallization of poly(ε-caprolactone)/polylactide blend. Int J Biol Macromol 2024; 269:132097. [PMID: 38710249 DOI: 10.1016/j.ijbiomac.2024.132097] [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: 01/14/2024] [Revised: 04/09/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
Biodegradable polymer blends filled with rod-like polysaccharide nanocrystals have attracted much attention because each component in this type of ternary composites is biodegradable, and the final properties are more easily tailored comparing to those of binary composites. In this work, chitin nanocrystals (ChNCs) were used as nanofiller for the biodegradable poly(ε-caprolactone) (PCL)/polylactide (PLA) immiscible blend to prepare ternary composites for a crystallization study. The results revealed that the crystallization behavior of PCL/PLA blend matrices strongly depended on the surface properties of ChNCs. Non-modified ChNCs and modified ChNCs played completely different roles during crystallization of the ternary systems: the former was inert filler, while the latter acted as anti-nucleator to the PCL phase. This alteration was resulted from the improved ChNC-PCL affinity after modification of ChNCs, which was due to the 'interfacial dilution effect' and the preferential dispersion of ChNCs. This work presents a unique perspective on the nucleation role of ChNCs in the crystallization of immiscible PCL/PLA blends, and opens up a new application scenario for ChNCs as anti-nucleator.
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Affiliation(s)
- Fen Ma
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Yuxin Gao
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Wenyuan Xie
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China; Institute for Innovative Materials & Energy, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China.
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2
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Han Y, Wang H, Guan Y, Li S, Yuan Z, Lu L, Zheng X. High-precision 3D printing of multi-branch vascular scaffold with plasticized PLCL thermoplastic elastomer. Biomed Mater 2024; 19:035042. [PMID: 38636492 DOI: 10.1088/1748-605x/ad407c] [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: 01/10/2024] [Accepted: 04/18/2024] [Indexed: 04/20/2024]
Abstract
Three-dimensional (3D) printing has emerged as a transformative technology for tissue engineering, enabling the production of structures that closely emulate the intricate architecture and mechanical properties of native biological tissues. However, the fabrication of complex microstructures with high accuracy using biocompatible, degradable thermoplastic elastomers poses significant technical obstacles. This is primarily due to the inherent soft-matter nature of such materials, which complicates real-time control of micro-squeezing, resulting in low fidelity or even failure. In this study, we employ Poly (L-lactide-co-ϵ-caprolactone) (PLCL) as a model material and introduce a novel framework for high-precision 3D printing based on the material plasticization process. This approach significantly enhances the dynamic responsiveness of the start-stop transition during printing, thereby reducing harmful errors by up to 93%. Leveraging this enhanced material, we have efficiently fabricated arrays of multi-branched vascular scaffolds that exhibit exceptional morphological fidelity and possess elastic moduli that faithfully approximate the physiological modulus spectrum of native blood vessels, ranging from 2.5 to 45 MPa. The methodology we propose for the compatibilization and modification of elastomeric materials addresses the challenge of real-time precision control, representing a significant advancement in the domain of melt polymer 3D printing. This innovation holds considerable promise for the creation of detailed multi-branch vascular scaffolds and other sophisticated organotypic structures critical to advancing tissue engineering and regenerative medicine.
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Affiliation(s)
- Yunda Han
- School of Mechanical Engineering, Shenyang University of Technology, Shenyang, 110870, People's Republic of China
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, People's Republic of China
| | - Heran Wang
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, People's Republic of China
| | - Yuheng Guan
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
| | - Song Li
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, People's Republic of China
| | - Zewei Yuan
- School of Mechanical Engineering, Shenyang University of Technology, Shenyang, 110870, People's Republic of China
| | - Lihua Lu
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
| | - Xiongfei Zheng
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China
- Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, People's Republic of China
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3
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Yu W, Hu Z, Zhang Y, Zhang Y, Dong W, Li X, Wang S. Compatibilizing Biodegradable Poly(lactic acid)/polybutylene adipate-co-terephthalate Blends via Reactive Graphene Oxide for Screw-Based 3D Printing. Polymers (Basel) 2023; 15:3992. [PMID: 37836041 PMCID: PMC10575447 DOI: 10.3390/polym15193992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/01/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Vinyl-functionalized graphene oxide (VGO) was used as a reactive compatibilizer to prepare poly(lactic acid)/polybutylene adipate-co-terephthalate (PLA/PBAT) blends. The linear rheological and scanning electron microscopy results confirmed that the VGO nanosheets were quite efficient in compatibilizing PLA/PBAT blends. The size of the PBAT dispersed phase was remarkably decreased in the presence of VGO nanosheets. Moreover, the VGO nanosheets exhibited strong nucleating effects on the crystallization process of PLA. The crystallinity of PLA component in the compatibilized blend with various VGO nanosheets was higher than 40%, upon the cooling rate of 20 °C/min. The prepared PLA/PBAT pellets were applied to 3D printing, using a self-developed screw-based 3D printer. The results showed that all the prepared PLA/PBAT blend pellets can be 3D printed successfully. The notched Izod impact test results showed that, in the presence of VGO, an increase of at least 142% in impact strength was achieved for PLA/PBAT blend. This could be attributed to the compatibilizing effect of the VGO nanosheets. Thus, this work provides a novel way to prepare tough PLA-based materials for 3D printing.
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Affiliation(s)
- Wei Yu
- College of Physics and Electronic Information Engineering, Zhejiang Normal University, Jinhua 321004, China;
| | - Zhonglue Hu
- Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (W.D.); (X.L.)
| | - Ye Zhang
- Beijing Aeronautical Science & Technology Research Institute (BASTRI), Commercial Aircraft Corporation of China, Shanghai 200126, China;
| | - Yakuang Zhang
- Aerospace and Astronautics Propulsion Research Institute, 20 Shidai Road, Haining 314400, China;
| | - Weiping Dong
- Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (W.D.); (X.L.)
| | - Xiping Li
- Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (W.D.); (X.L.)
| | - Sisi Wang
- Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China; (Z.H.); (W.D.); (X.L.)
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Sharma D, Banerjee A, Bhattacharyya J, Satapathy BK. Structurally stable and surface-textured polylactic acid/copolymer/poly (ε-caprolactone) blend-based electrospun constructs with tunable hydroxyapatite responsiveness. Colloids Surf B Biointerfaces 2023; 221:112969. [DOI: 10.1016/j.colsurfb.2022.112969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 10/19/2022] [Accepted: 10/22/2022] [Indexed: 11/06/2022]
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5
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Bonardd S, Ramirez O, Abarca G, Leiva Á, Saldías C, Díaz DD. Porous chitosan-based nanocomposites containing gold nanoparticles. Increasing the catalytic performance through film porosity. Int J Biol Macromol 2022; 217:864-877. [PMID: 35907452 DOI: 10.1016/j.ijbiomac.2022.07.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/13/2022] [Accepted: 07/24/2022] [Indexed: 11/05/2022]
Abstract
The preparation of porous and non-porous chitosan thin-films containing gold nanoparticles was carried out, aiming to evaluate the effect of porosity on their catalytic response using the p-nitrophenol reduction as model reaction. To achieve this, both types of samples were decorated with gold nanoparticles having similar characteristics in terms of amount, size and shape, which were synthesized following a two-step adsorption-reduction process. The results demonstrated that the presence of porosity generates a considerable enhancement of the catalytic property. This behavior is reflected in higher kinetic constant and conversion values, along with a better recyclability after consecutive cycles. The inclusion of porosity in nanocomposites afforded kobs values 7.5 times higher than the non-porous material, as well as conversion values as high as 80 % in <20 min. On the other hand, as an additional experiment, a porous sample prepared with half the amount of gold also exhibited a better performance than the non-porous catalyst, revealing that the porosity allowed to decrease the amount of catalytic metal used and still exhibiting kobs values 5.9 times higher than the non-porous specimen. These studies demonstrate that there is an important synergistic support-nanostructure relationship, which strongly influences the performance of the nanomaterial.
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Affiliation(s)
- Sebastian Bonardd
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, La Laguna 38206, Tenerife, Spain; Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, La Laguna 38206, Tenerife, Spain.
| | - Oscar Ramirez
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, La Laguna 38206, Tenerife, Spain; Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, La Laguna 38206, Tenerife, Spain; Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 302, Correo 22, Santiago, Chile
| | - Gabriel Abarca
- Universidad Bernardo O'Higgins, Centro Integrativo de Biología y Química Aplicada (CIBQA), General Gana 1702, Santiago, Chile
| | - Ángel Leiva
- Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 302, Correo 22, Santiago, Chile
| | - César Saldías
- Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 302, Correo 22, Santiago, Chile
| | - David Díaz Díaz
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, La Laguna 38206, Tenerife, Spain; Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, La Laguna 38206, Tenerife, Spain; Institute of Organic Chemistry, University of Regensburg, Universitätstr. 31, Regensburg 93053, Germany
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6
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Structure and Morphology of Poly(ε-caprolactone) Heterogeneous Shish-Kebab Structure Induced by Poly(lactic acid) Nanofibers. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2747-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Guo J, Liu X, Liu M, Han M, Liu Y, Ji S. Effect of molecular weight of Poly(ethylene glycol) on plasticization of Poly(ʟ-lactic acid). POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Casamento F, D'Anna A, Arrigo R, Frache A. Rheological behavior and morphology of poly(lactic acid)/low‐density polyethylene blends based on virgin and recycled polymers: Compatibilization with natural surfactants. J Appl Polym Sci 2021. [DOI: 10.1002/app.50590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Francesco Casamento
- Department of Applied Science and Technology Polytechnic of Turin, INSTM Local Unit Alessandria Italy
| | - Alessandra D'Anna
- Department of Applied Science and Technology Polytechnic of Turin, INSTM Local Unit Alessandria Italy
| | - Rossella Arrigo
- Department of Applied Science and Technology Polytechnic of Turin, INSTM Local Unit Alessandria Italy
| | - Alberto Frache
- Department of Applied Science and Technology Polytechnic of Turin, INSTM Local Unit Alessandria Italy
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9
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Zhang Y, Qi J, Chen H, Xiong C. Amphiphilic diblock copolymers inhibit the formation of encrustation on the surface of biodegradable ureteral stents in vitro and in vivo. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Mulchandani N, Masutani K, Kumar S, Yamane H, Sakurai S, Kimura Y, Katiyar V. Toughened PLA-b-PCL-b-PLA triblock copolymer based biomaterials: effect of self-assembled nanostructure and stereocomplexation on the mechanical properties. Polym Chem 2021. [DOI: 10.1039/d1py00429h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The current research unfolds the effect of block lengths, microdomain morphology and stereocomplexation on the mechanical properties of PLA-b-PCL-b-PLA triblock copolymers where PCL is involved to improve the poor extensibility of PLA.
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Affiliation(s)
- Neha Mulchandani
- Department of Chemical Engineering
- Indian Institute of Technology Guwahati
- North Guwahati 781-039
- India
| | - Kazunari Masutani
- Department of Biobased Materials Science
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Sachin Kumar
- Department of Bioscience and Bioengineering
- Indian Institute of Technology Guwahati
- North Guwahati 781-039
- India
| | - Hideki Yamane
- Department of Biobased Materials Science
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Shinichi Sakurai
- Department of Chemical Engineering
- Indian Institute of Technology Guwahati
- North Guwahati 781-039
- India
- Department of Biobased Materials Science
| | - Yoshiharu Kimura
- Department of Biobased Materials Science
- Kyoto Institute of Technology
- Kyoto 606-8585
- Japan
| | - Vimal Katiyar
- Department of Chemical Engineering
- Indian Institute of Technology Guwahati
- North Guwahati 781-039
- India
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11
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Nucleation modalities in poly(lactide), poly(butylene succinate), and poly(ε‐caprolactone) ternary blends with partial wetting morphology. POLYMER CRYSTALLIZATION 2020. [DOI: 10.1002/pcr2.10145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Xiangbin Liu, Qu G, Yu Q, Zhang N, Wang L, Wang J. Synthesis of Poly(ethylene glycol) Grafted Polyamidoamine Dendrimer Hydrogels and Their Temperature and pH Sensitive Properties. POLYMER SCIENCE SERIES B 2020. [DOI: 10.1134/s1560090420040089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Vannozzi L, Gouveia P, Pingue P, Canale C, Ricotti L. Novel Ultrathin Films Based on a Blend of PEG- b-PCL and PLLA and Doped with ZnO Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21398-21410. [PMID: 32302103 DOI: 10.1021/acsami.0c00154] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In this paper, a novel nanofilm type is proposed based on a blend of poly(ethylene glycol)-block-poly(ε-caprolactone) methyl ether (PEG-b-PCL) and poly(l-lactic acid), doped with zinc oxide nanoparticles (ZnO NPs) at different concentrations (0.1, 1, and 10 mg/mL). All nanofilm types were featured by a thickness value of ∼500 nm. Increasing ZnO NP concentrations implied larger roughness values (∼22 nm for the bare nanofilm and ∼67 nm for the films with 10 mg/mL of NPs), larger piezoelectricity (average d33 coefficient for the film up to ∼1.98 pm/V), and elastic modulus: the nanofilms doped with 1 and 10 mg/mL of NPs were much stiffer than the nondoped controls and nanofilms doped with 0.1 mg/mL of NPs. The ZnO NP content was also directly proportional to the material melting point and crystallinity and inversely proportional to the material degradation rate, thus highlighting the stabilization role of ZnO particles. In vitro tests were carried out with cells of the musculoskeletal apparatus (fibroblasts, osteoblasts, chondrocytes, and myoblasts). All cell types showed good adhesion and viability on all substrate formulations. Interestingly, a higher content of ZnO NPs in the matrix demonstrated higher bioactivity, boosting the metabolic activity of fibroblasts, myoblasts, and chondrocytes and enhancing the osteogenic and myogenic differentiation. These findings demonstrated the potential of these nanocomposite matrices for regenerative medicine applications, such as tissue engineering.
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Affiliation(s)
- Lorenzo Vannozzi
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertá 33, 56127 Pisa, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Liberta 33, 56127 Pisa, Italy
| | - Pedro Gouveia
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertá 33, 56127 Pisa, Italy
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin D02 YN77, Ireland
| | - Pasqualantonio Pingue
- NEST, Scuola Normale Superiore and CNR Istituto Nanoscienze, Piazza San Silvestro 12, 56127 Pisa (PI), Italy
| | - Claudio Canale
- Department of Physics, University of Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertá 33, 56127 Pisa, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Liberta 33, 56127 Pisa, Italy
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14
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Investigations on the compatibilization between poly(lactic-co-glycolic acid)/poly(trimethylene carbonate) blends and poly(lactide-co-trimethylene carbonate). Colloid Polym Sci 2020. [DOI: 10.1007/s00396-019-04595-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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15
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Study on miscibility, thermal properties, degradation behaviors, and toughening mechanism of poly(lactic acid)/poly (ethylene-butylacrylate-glycidyl methacrylate) blends. Int J Biol Macromol 2020; 143:443-452. [DOI: 10.1016/j.ijbiomac.2019.11.226] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 11/08/2019] [Accepted: 11/28/2019] [Indexed: 11/19/2022]
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16
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Fibrous Materials Made of Poly( ε-caprolactone)/Poly(ethylene oxide) -b-Poly( ε-caprolactone) Blends Support Neural Stem Cells Differentiation. Polymers (Basel) 2019; 11:polym11101621. [PMID: 31597231 PMCID: PMC6835932 DOI: 10.3390/polym11101621] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 09/22/2019] [Accepted: 09/27/2019] [Indexed: 02/07/2023] Open
Abstract
In this work, we design and produce micron-sized fiber mats by blending poly(ε-caprolactone) (PCL) with small amounts of block copolymers poly(ethylene oxide)m-block-poly(ε-caprolactone)n (PEOm-b-PCLn) using electrospinning. Three different PEOm-b-PCLn block copolymers, with different molecular weights of PEO and PCL, were synthesized by ring opening polymerization of ε-caprolactone using PEO as initiator and stannous octoate as catalyst. The polymer blends were prepared by homogenous solvent mixing using dichloromethane for further electrospinning procedures. After electrospinning, it was found that the addition to PCL of the different block copolymers produced micron-fibers with smaller width, equal or higher hydrophilicity, lower Young modulus, and rougher surfaces, as compared with micron-fibers obtained only with PCL. Neural stem progenitor cells (NSPC), isolated from rat brains and grown as neurospheres, were cultured on the fibrous materials. Immunofluorescence assays showed that the NSPC are able to survive and even differentiate into astrocytes and neurons on the synthetic fibrous materials without any growth factor and using the fibers as guidance. Disassembling of the cells from the NSPC and acquisition of cell specific molecular markers and morphology progressed faster in the presence of the block copolymers, which suggests the role of the hydrophilic character and porous topology of the fiber mats.
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18
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Ai X, Wang D, Li X, Pan H, Kong J, Yang H, Zhang H, Dong L. The properties of chemical cross-linked poly(lactic acid) by bis(tert-butyl dioxy isopropyl) benzene. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-018-2351-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Injectable thermosensitive hydrogel systems based on functional PEG/PCL block polymer for local drug delivery. J Control Release 2019; 297:60-70. [PMID: 30684513 DOI: 10.1016/j.jconrel.2019.01.026] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/03/2019] [Accepted: 01/18/2019] [Indexed: 12/26/2022]
Abstract
Injectable in situ thermosensitive hydrogels have potential applications in tissue engineering and drug delivery. The hydrogel formulations exist as aqueous solutions at room temperature but rapidly solidify into gels at 37 °C in situ, making them highly suitable for administering drugs in a minimally invasive manner to the target organ(s). The hydrogel formed with nanoparticles assembled with amphiphilic polymer blocks of polyethyleneglycol (PEG) and biodegradable polycaprolactone (PCL) have been tested as platforms for targeted and sustained drug delivery, and have shown encouraging results. In this review, we summarize the influence of the molecular weight, PEG/PCL ratio and functional structure of hydrophobic PCL blocks on the critical gelation temperature, gelling behavior and drug release kinetics of the hydrogels. The current studies on the biomedical applications of thermosensitive PEG/PCL hydrogels have also been discussed.
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20
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Imre B, García L, Puglia D, Vilaplana F. Reactive compatibilization of plant polysaccharides and biobased polymers: Review on current strategies, expectations and reality. Carbohydr Polym 2018; 209:20-37. [PMID: 30732800 DOI: 10.1016/j.carbpol.2018.12.082] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/27/2018] [Accepted: 12/24/2018] [Indexed: 10/27/2022]
Abstract
Our society is amidst a technological revolution towards a sustainable economy, focused on the development of biobased products in virtually all sectors. In this context, plant polysaccharides, as the most abundant macromolecules present in biomass represent a fundamental renewable resource for the replacement of fossil-based polymeric materials in commodity and engineering applications. However, native polysaccharides have several disadvantages compared to their synthetic counterparts, including reduced thermal stability, moisture absorption and limited mechanical performance, which hinder their direct application in native form in advanced material systems. Thus, polysaccharides are generally used in a derivatized form and/or in combination with other biobased polymers, requiring the compatibilization of such blends and composites. In this review we critically explore the current status and the future outlook of reactive compatibilization strategies of the most common plant polysaccharides in blends with biobased polymers. The chemical processes for the modification and compatibilization of starch and lignocellulosic based materials are discussed, together with the practical implementation of these reactive compatibilization strategies with special emphasis on reactive extrusion. The efficiency of these strategies is critically discussed in the context on the definition of blending and compatibilization from a polymer physics standpoint; this relies on the detailed evaluation of the chemical structure of the constituent plant polysaccharides and biobased polymers, the morphology of the heterogeneous polymeric blends, and their macroscopic behavior, in terms of rheological and mechanical properties.
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Affiliation(s)
- Balázs Imre
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Lidia García
- Fundación Aitiip, Polígono Industrial Empresarium, C/Romero Nº 12, Zaragoza 50720, Spain; Tecnopackaging S.L., Polígono Industrial Empresarium, C/Romero Nº 12, Zaragoza 50720, Spain
| | - Debora Puglia
- Department of Civil and Environmental Engineering, University of Perugia, Terni, Italy
| | - Francisco Vilaplana
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden.
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21
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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: 269] [Impact Index Per Article: 44.8] [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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Quercetin-loaded and unloaded electrospun membranes: Synthesis, characterization and in vitro release study. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.06.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ding Y, Feng W, Lu B, Wang P, Wang G, Ji J. PLA-PEG-PLA tri-block copolymers: Effective compatibilizers for promotion of the interfacial structure and mechanical properties of PLA/PBAT blends. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.05.037] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Han W, Liao X, He B, Yang Q, Li G. Disclosing the crystallization behavior and morphology of poly(ϵ-caprolactone) within poly(ϵ-caprolactone)/poly( l-lactide) blends. POLYM INT 2018. [DOI: 10.1002/pi.5548] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Weiqiang Han
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Sichuan China
| | - Xia Liao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Sichuan China
| | - Bin He
- National Engineering Research Center for Biomaterials; Sichuan University; Sichuan China
| | - Qi Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Sichuan China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Sichuan China
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25
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Improvement of microstructures and properties of poly(lactic acid)/poly(ε-caprolactone) blends compatibilized with polyoxymethylene. J Appl Polym Sci 2018. [DOI: 10.1002/app.46536] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Chen Y, Han L, Ju D, Liu T, Dong L. Disentanglement induced by uniaxial pre-stretching as a key factor for toughening poly( -lactic acid) sheets. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ang HY, Chan J, Toong D, Venkatraman SS, Chia SJ, Huang YY. Tailoring the mechanical and biodegradable properties of binary blends of biomedical thermoplastic elastomer. J Mech Behav Biomed Mater 2018; 79:64-72. [DOI: 10.1016/j.jmbbm.2017.12.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/11/2017] [Accepted: 12/14/2017] [Indexed: 11/16/2022]
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Wang P, Xu P, Wei H, Fang H, Ding Y. Effect of block copolymer containing ionic liquid moiety on interfacial polarization in PLA/PCL blends. J Appl Polym Sci 2018. [DOI: 10.1002/app.46161] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ping Wang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Pei Xu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Haibing Wei
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Huagao Fang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
| | - Yunsheng Ding
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices; Hefei University of Technology; Hefei 230009 China
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Zhao H. Enzymatic Ring-Opening Polymerization (ROP) of Polylactones: Roles of Non-Aqueous Solvents. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY (OXFORD, OXFORDSHIRE : 1986) 2018; 93:9-19. [PMID: 31929672 PMCID: PMC6953973 DOI: 10.1002/jctb.5444] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/17/2017] [Indexed: 06/10/2023]
Abstract
Aliphatic polyesters such as polylactides (PLAs) and other polylactones are thermoplastic, renewable and biocompatible polymers with high potentials to replace petro-chemical-based synthetic polymers. A benign route for synthesizing these polyesters is through the enzyme-catalyzed ring-opening polymerization (ROP) reaction; this type of enzymatic process is very sensitive to reaction conditions such as solvents, water content and temperature. This review systematically discusses the crucial roles of different solvents (such as solvent-free or in bulk, organic solvents, supercritical fluids, ionic liquids, and aqueous biphasic systems) on the degree of polymerization and polydispersity. In general, many studies suggest that hydrophobic organic solvents with minimum water contents lead to efficient enzymatic polymerization and subsequently high molecular weights of polyesters; the selection of solvents is also limited by the reaction temperature, e.g. the ROP of lactide is often conducted at above 100 °C, therefore, the solvent typically needs to have its boiling point above this temperature. The use of supercritical fluids could be limited by its scaling-up potential, while ionic liquids have exhibited many advantages include their low-volatility, high thermal stability, controllable enzyme-compatibility, and a wide range of choices. However, the fundamental and mechanistic understanding of the specific roles of ionic liquids in enzymatic ROP reactions is still lacking. Furthermore, the lipase specificity towards l- and d-lactide is also surveyed, followed by the discussion of engineered lipases with improved enantioselectivity and thermal stability. In addition, the preparation of polyester-derived materials such as polyester-grafted cellulose by the enzymatic ROP method is briefly reviewed.
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Affiliation(s)
- Hua Zhao
- Department of Chemistry and Biochemistry, University of Northern Colorado, Greeley, CO 80639, USA
- Department of Chemistry and Forensic Science, Savannah State University, Savannah, GA 31404, USA
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Muthuraj R, Misra M, Mohanty AK. Biodegradable compatibilized polymer blends for packaging applications: A literature review. J Appl Polym Sci 2017. [DOI: 10.1002/app.45726] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Rajendran Muthuraj
- Institut de Recherche Dupuy de Lome (IRDL)‐CNRS FRE 3744University of South BrittanyLorient56100 France
| | - Manjusri Misra
- School of EngineeringUniversity of GuelphGuelph Ontario Canada
- Bioproducts Discovery and Development Centre (BDDC), Crop Science Building, Department of Plant AgricultureUniversity of GuelphGuelph Ontario Canada
| | - Amar Kumar Mohanty
- School of EngineeringUniversity of GuelphGuelph Ontario Canada
- Bioproducts Discovery and Development Centre (BDDC), Crop Science Building, Department of Plant AgricultureUniversity of GuelphGuelph Ontario Canada
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Auriemma F, De Rosa C, Malafronte A, Di Girolamo R, Santillo C, Gerelli Y, Fragneto G, Barker R, Pavone V, Maglio O, Lombardi A. Nano-in-Nano Approach for Enzyme Immobilization Based on Block Copolymers. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29318-29327. [PMID: 28809474 DOI: 10.1021/acsami.7b08959] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We set up a facile approach for fabrication of supports with tailored nanoporosity for immobilization of enzymes. To this aim block copolymers (BCPs) self-assembly has been used to prepare nanostructured thin films with well-defined architecture containing pores of tailorable size delimited by walls with tailorable degree of hydrophilicity. In particular, we employed a mixture of polystyrene-block-poly(l-lactide) (PS-PLLA) and polystyrene-block-poly(ethylene oxide) (PS-PEO) diblock copolymers to generate thin films with a lamellar morphology consisting of PS lamellar domains alternating with mixed PEO/PLLA blocks lamellar domains. Selective basic hydrolysis of the PLLA blocks generates thin films, patterned with nanometric channels containing hydrophilic PEO chains pending from PS walls. The shape and size of the channels and the degree of hydrophilicity of the pores depend on the relative length of the blocks, the molecular mass of the BCPs, and the composition of the mixture. The strength of our approach is demonstrated in the case of physical adsorption of the hemoprotein peroxidase from horseradish (HRP) using 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) with H2O2 as substrate. The large surface area, the tailored pore sizes, and the functionalization with hydrophilic PEO blocks make the designed nanostructured materials suitable supports for the nanoconfinement of HRP biomolecules endowed with high catalytic performance, no mass-transfer limitations, and long-term stability.
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Affiliation(s)
- Finizia Auriemma
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Claudio De Rosa
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Anna Malafronte
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Rocco Di Girolamo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Chiara Santillo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Yuri Gerelli
- Partnership for Soft Condensed Matter, Institut Laue-Langevin , 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Giovanna Fragneto
- Partnership for Soft Condensed Matter, Institut Laue-Langevin , 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Robert Barker
- Partnership for Soft Condensed Matter, Institut Laue-Langevin , 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Vincenzo Pavone
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
| | - Ornella Maglio
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
- Dipartimento di Biologia, IBB-CNR , via Mezzocannone, 16, 80134 Napoli, Italy
| | - Angela Lombardi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II , Complesso Monte S. Angelo, Via Cintia, 80126 Napoli, Italy
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Nehra R, Maiti SN, Jacob J. Analytical interpretations of static and dynamic mechanical properties of thermoplastic elastomer toughened PLA blends. J Appl Polym Sci 2017. [DOI: 10.1002/app.45644] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ranjana Nehra
- Centre for Polymer Science and Engineering; Indian Institute of Technology Delhi; New Delhi 110016 India
| | - Saurindra Nath Maiti
- Centre for Polymer Science and Engineering; Indian Institute of Technology Delhi; New Delhi 110016 India
| | - Josemon Jacob
- Centre for Polymer Science and Engineering; Indian Institute of Technology Delhi; New Delhi 110016 India
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Kelnar I, Kratochvíl J, Kaprálková L, Zhigunov A, Nevoralová M. Graphite nanoplatelets-modified PLA/PCL: Effect of blend ratio and nanofiller localization on structure and properties. J Mech Behav Biomed Mater 2017; 71:271-278. [PMID: 28371700 DOI: 10.1016/j.jmbbm.2017.03.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 03/23/2017] [Accepted: 03/26/2017] [Indexed: 11/18/2022]
Abstract
Structure and properties of poly(lactic acid) (PLA)/poly (ɛ-caprolactone) (PCL) influenced by graphite nanoplatelets (GNP) were studied in dependence on blend composition. Electron microscopy indicates predominant localization of GNP in PCL. GNP-induced changes in viscosity hinder refinement of PCL inclusions, support PCL continuity in the co-continuous system, and lead to reduction of PLA inclusions size without GNP being present at the interface in the PCL-matrix blend. Negligible differences in crystallinity of both phases indicate that mechanical behaviour is mainly influenced by reinforcement and GNP-induced changes in morphology. Addition of 5 parts of GNP leads to ~40% and ~25% increase of stiffness in the PCL- and PLA-matrix systems, respectively, whereas the reinforcing effect is practically eliminated in the co-continuous systems due to GNP-induced lower continuity of PLA which enhances toughness. Impact resistance of the 80/20 blend shows increase with 5 parts content due to synergistic effect of PCL/GNP stacks, whereas minor increase in the blend of the ductile PCL matrix with brittle PLA inclusions is caused by GNP-modification of the component parameters. Results indicate high potential of GNP in preparing biocompatible systems with wide range of structure and properties.
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Affiliation(s)
- Ivan Kelnar
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskeho nam. 2, 162 06 Praha, Czechia.
| | - Jaroslav Kratochvíl
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskeho nam. 2, 162 06 Praha, Czechia
| | - Ludmila Kaprálková
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskeho nam. 2, 162 06 Praha, Czechia
| | - Alexander Zhigunov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskeho nam. 2, 162 06 Praha, Czechia
| | - Martina Nevoralová
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovskeho nam. 2, 162 06 Praha, Czechia
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Huang Z, Wang S, Wang N, Ma X, Karki J, Han Z, Lang M, Zhu B, Zhang X. Preparation and evaluation of PCLA2575 membranes loaded ornidazole in vitro. J BIOACT COMPAT POL 2017. [DOI: 10.1177/0883911517693636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The aim of this study was to evaluate the properties of the sustained release and antibacterial activity of the ornidazole-drug-loaded membranes using poly[(ethylene glycol)-caprolactone-lactide] (PCLA2575) as membrane material. Ornidazole-loaded membranes were prepared by solvent casting method with the proportion of 5 wt%, 8 wt%, and 10 wt%, respectively. In vitro drug release properties were determined by ultraviolet spectrophotometric method. The antibacterial activities against Streptococcus mutans and Fusobacterium nucleatum in vitro were observed on solid culture medium. The membrane had the high drug loadings and slow-release performance. Drug release time was shortened with the increase in the content of ornidazole, but all of them can achieve more than 7 days. The membrane had strong inhibitory effect on both S. mutans and F. nucleatum. As drug content increased, the antibacterial activities also increased. The membrane had better inhibitory effect on F. nucleatum than S. mutans. Therefore, the ornidazole drug-loaded membrane is expected to be used for the treatment of periodontal disease because of the obvious effect of periodontal pathogens inhibition and good sustained-release performance.
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Affiliation(s)
- Zhengmei Huang
- Department of Prosthodontics, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Shenchun Wang
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Ningtao Wang
- Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaofei Ma
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Junu Karki
- Department of Prosthodontics, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhihui Han
- Department of Prosthodontics, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University, Shanghai, China
| | - Meidong Lang
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Bangshang Zhu
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai, China
| | - Xiuyin Zhang
- Department of Prosthodontics, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University, Shanghai, China
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Finotti PFM, Costa LC, Capote TSO, Scarel-Caminaga RM, Chinelatto MA. Immiscible poly(lactic acid)/poly(ε-caprolactone) for temporary implants: Compatibility and cytotoxicity. J Mech Behav Biomed Mater 2017; 68:155-162. [PMID: 28171812 DOI: 10.1016/j.jmbbm.2017.01.050] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/27/2017] [Accepted: 01/29/2017] [Indexed: 11/28/2022]
Abstract
This manuscript focuses on the effect of the addition of a low molecular weight triblock copolymer derived from ε-caprolactone and tetrahydrofuran (CT) on the compatibility and cytotoxicity of immiscible poly(lactic acid) (PLA) and poly(ε-caprolactone) (PCL) blends. Binary and tertiary PLA/PCL blends were prepared by melt mixing in a twin-screw extruder and their morphological, mechanical and thermal behaviors were investigated by scanning electron microscopy (SEM), tensile and Izod impact test, dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). SEM micrographs showed the CT copolymer suppressed the coalescence phenomena and maintained the size of dispersed PCL domains at approximately 0.35µm. Bioresorbable PLA/PCL blends containing 5wt% of CT copolymer exhibited a remarkable increase in ductility and improved toughness at room temperature. Although the CT copolymer increased the interfacial adhesion, the DMA results suggest it also acts as a plasticizer exclusively for the PCL phase. The cell viability evaluated by the XTT assay confirmed PLA/PCL blends compatibilized by CT copolymer exerted no cytotoxic effect.
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Affiliation(s)
- Pablo F M Finotti
- Department of Materials Engineering, Engineering School of São Carlos, University of São Paulo - USP, São Carlos, São Paulo 13563-120, Brazil
| | - Lidiane C Costa
- Department of Materials Engineering, Federal University of São Carlos - UFSCar, São Carlos, São Paulo 13565-905, Brazil
| | - Ticiana S O Capote
- Department of Morphology, School of Dentistry at Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo 14801-603, Brazil
| | - Raquel M Scarel-Caminaga
- Department of Morphology, School of Dentistry at Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo 14801-603, Brazil
| | - Marcelo A Chinelatto
- Department of Materials Engineering, Engineering School of São Carlos, University of São Paulo - USP, São Carlos, São Paulo 13563-120, Brazil.
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Rizzuto M, Marinetti L, Caretti D, Mugica A, Zubitur M, Müller AJ. Can poly(ε-caprolactone) crystals nucleate glassy polylactide? CrystEngComm 2017. [DOI: 10.1039/c7ce00578d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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37
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Han W, Liao X, Yang Q, Li G, He B, Zhu W, Hao Z. Crystallization and morphological transition of poly(l-lactide)–poly(ε-caprolactone) diblock copolymers with different block length ratios. RSC Adv 2017. [DOI: 10.1039/c7ra03496b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The crystallization temperature has an effect on the relationship between the lamellar twisting and the morphological transition of PLLA.
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Affiliation(s)
- Weiqiang Han
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Xia Liao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Qi Yang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Guangxian Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Bin He
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610065
| | - Wenli Zhu
- School of Mechanical and Automobile Engineering
- Hubei University of Arts and Science
- Xiangyang
- China
| | - Zengheng Hao
- Chongqing Zhixiang Paving Technology Engineering Co., Ltd
- Chongqing 400060
- China
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Castro-Aguirre E, Iñiguez-Franco F, Samsudin H, Fang X, Auras R. Poly(lactic acid)-Mass production, processing, industrial applications, and end of life. Adv Drug Deliv Rev 2016; 107:333-366. [PMID: 27046295 DOI: 10.1016/j.addr.2016.03.010] [Citation(s) in RCA: 461] [Impact Index Per Article: 57.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/01/2016] [Accepted: 03/22/2016] [Indexed: 11/25/2022]
Abstract
Global awareness of material sustainability has increased the demand for bio-based polymers like poly(lactic acid) (PLA), which are seen as a desirable alternative to fossil-based polymers because they have less environmental impact. PLA is an aliphatic polyester, primarily produced by industrial polycondensation of lactic acid and/or ring-opening polymerization of lactide. Melt processing is the main technique used for mass production of PLA products for the medical, textile, plasticulture, and packaging industries. To fulfill additional desirable product properties and extend product use, PLA has been blended with other resins or compounded with different fillers such as fibers, and micro- and nanoparticles. This paper presents a review of the current status of PLA mass production, processing techniques and current applications, and also covers the methods to tailor PLA properties, the main PLA degradation reactions, PLA products' end-of-life scenarios and the environmental footprint of this unique polymer.
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Kim TH, Kim H, Choi KI, Yoo J, Seo YS, Lee JS, Koo J. Graphene Oxide Monolayer as a Compatibilizer at the Polymer-Polymer Interface for Stabilizing Polymer Bilayer Films against Dewetting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12741-12748. [PMID: 27934522 DOI: 10.1021/acs.langmuir.6b03095] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigate the effect of adding graphene oxide (GO) sheets at the polymer-polymer interface on the dewetting dynamics and compatibility of immiscible polymer bilayer films. GO monolayers are deposited at the poly(methyl methacrylate) (PMMA)-polystyrene (PS) interface by the Langmuir-Schaefer technique. GO monolayers are found to significantly inhibit the dewetting behavior of both PMMA films (on PS substrates) and PS films (on PMMA substrates). This can be interpreted in terms of an interfacial interaction between the GO sheets and these polymers, which is evidenced by the reduced contact angle of the dewet droplets. The favorable interaction of GO with both PS and PMMA facilitates compatibilization of the immiscible polymer bilayer films, thereby stabilizing their bilayer films against dewetting. This compatibilization effect is verified by neutron reflectivity measurements, which reveal that the addition of GO monolayers broadens the interface between PS and the deuterated PMMA films by 2.2 times over that of the bilayer in the absence of GO.
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Affiliation(s)
- Tae-Ho Kim
- Neutron Science Division, Korea Atomic Energy Research Institute (KAERI) , Daejeon 34057, South Korea
| | - Hyeri Kim
- Neutron Science Division, Korea Atomic Energy Research Institute (KAERI) , Daejeon 34057, South Korea
| | - Ki-In Choi
- Neutron Science Division, Korea Atomic Energy Research Institute (KAERI) , Daejeon 34057, South Korea
| | - Jeseung Yoo
- Department of Nano Science and Technology, Sejong University , Seoul 05006, South Korea
| | - Young-Soo Seo
- Department of Nano Science and Technology, Sejong University , Seoul 05006, South Korea
| | - Jeong-Soo Lee
- Neutron Science Division, Korea Atomic Energy Research Institute (KAERI) , Daejeon 34057, South Korea
| | - Jaseung Koo
- Neutron Science Division, Korea Atomic Energy Research Institute (KAERI) , Daejeon 34057, South Korea
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40
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Ge F, Wang X, Ran X. Effect of annealing on the properties of polylactide/poly(butylene carbonate) blend. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Feng Ge
- Polymer Composites Engineering Laboratory; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun China
- University of Chinese Academy of Sciences; Beijing China
| | - Xuemei Wang
- Polymer Composites Engineering Laboratory; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun China
| | - Xianghai Ran
- Polymer Composites Engineering Laboratory; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun China
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41
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Finotti PFM, Costa LC, Chinelatto MA. Effect of the Chemical Structure of Compatibilizers on the Thermal, Mechanical and Morphological Properties of Immiscible PLA/PCL Blends. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/masy.201600056] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Pablo F. M. Finotti
- Programa de Pós-Graduação em Ciência e Engenharia de Materiais; Universidade de São Paulo − USP; São Carlos-SP Brasil
| | - Lidiane C. Costa
- Departamento de Engenharia de Materiais; Universidade Federal de São Carlos − UFSCar; São Carlos-SP Brasil
| | - Marcelo A. Chinelatto
- Departamento de Engenharia de Materiais; Universidade de São Paulo − USP; São Carlos-SP Brasil
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42
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Navarro-Baena I, Sessini V, Dominici F, Torre L, Kenny JM, Peponi L. Design of biodegradable blends based on PLA and PCL: From morphological, thermal and mechanical studies to shape memory behavior. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.03.037] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Compatibility, mechanical properties and stability of blends of polylactide and polyurethane based on poly(ethylene glycol)-b-polylactide copolymers by chain extension with diisocyanate. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2015.12.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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44
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Improvement in impact resistance of polylactic acid by masticated and compatibilized natural rubber. IRANIAN POLYMER JOURNAL 2016. [DOI: 10.1007/s13726-015-0411-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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45
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Lv Q, Wu D, Xie H, Peng S, Chen Y, Xu C. Crystallization of poly(ε-caprolactone) in its immiscible blend with polylactide: insight into the role of annealing histories. RSC Adv 2016. [DOI: 10.1039/c6ra07752h] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cold crystallization of PLA can improve its affinity to PCL in their blends, and crystallized PLA domains have better nucleation effect to PCL crystallization relative to amorphous PLA ones.
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Affiliation(s)
- Qiaolian Lv
- School of Chemistry & Chemical Engineering
- Yangzhou University
- China
- Provincial Key Laboratory of Environmental Engineering & Materials
- China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering
- Yangzhou University
- China
- Provincial Key Laboratory of Environmental Engineering & Materials
- China
| | - Hui Xie
- School of Chemistry & Chemical Engineering
- Yangzhou University
- China
| | - Sheng Peng
- School of Chemistry & Chemical Engineering
- Yangzhou University
- China
| | - Yang Chen
- School of Chemistry & Chemical Engineering
- Yangzhou University
- China
- Provincial Key Laboratory of Environmental Engineering & Materials
- China
| | - Chunjiang Xu
- School of Chemistry & Chemical Engineering
- Yangzhou University
- China
- Provincial Key Laboratory of Environmental Engineering & Materials
- China
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46
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Rizzuto M, Mugica A, Zubitur M, Caretti D, Müller AJ. Plasticization and anti-plasticization effects caused by poly(lactide-ran-caprolactone) addition to double crystalline poly(l-lactide)/poly(ε-caprolactone) blends. CrystEngComm 2016. [DOI: 10.1039/c5ce02559a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Cao Y, Li Y, Wu Y, Li W, Yu C, Huang Y, Sun L, Bao Y, Li Y. Co-Delivery of angiostatin and curcumin by a biodegradable polymersome for antiangiogenic therapy. RSC Adv 2016. [DOI: 10.1039/c6ra24426b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Illustration of the AS–Cur-loaded polymersomes formed by block polymers for antiangiogenic therapy.
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Affiliation(s)
- Yue Cao
- National Engineering Laboratory for Druggable Gene and Protein Screening
- Northeast Normal University
- Changchun 130117
- P. R. China
| | - Yan Li
- School of Life Sciences
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Yin Wu
- School of Life Sciences
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Wenliang Li
- School of Life Sciences
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Chunlei Yu
- School of Life Sciences
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Yanxin Huang
- Institute of Genetics and Cytology
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Luguo Sun
- Institute of Genetics and Cytology
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Yongli Bao
- School of Life Sciences
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Yuxin Li
- National Engineering Laboratory for Druggable Gene and Protein Screening
- Northeast Normal University
- Changchun 130117
- P. R. China
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48
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Zhou NF, Huang YF, Wang JW. Effect of a bioabsorbable, super-high molecular weight poly-D,L-lactic acid plate containing recombinant human bone morphogenetic protein-2 for fracture healing. Exp Ther Med 2015; 10:1840-1844. [PMID: 26640559 DOI: 10.3892/etm.2015.2750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 07/02/2015] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to investigate the effect of a bioabsorbable, super-high molecular weight poly-D,L-lactic acid (PDLLA) plate exhibiting the sustained release of recombinant human bone morphogenetic protein-2 (rhBMP-2) (PDLLA-rhBMP-2) on the treatment of fracture with internal fixation. A total of 32 New Zealand rabbits were randomly allocated to one of four groups (2, 4, 8 and 12 weeks), and a 2.5-mm middle ulnar osteotomy was performed bilaterally. The right side (experimental side) was fixed internally with PDLLA-rhBMP-2, and the left side (control side) was fixed with a normal PDLLA plate. At 2, 4, 8 and 12 weeks after surgery, the gross pathology of the ulnas was examined and radiographic, histological and computer image analyses were performed. The results demonstrated that the ulna fractures were fixed stably with the two bioactive plates at 2, 4, 8 and 12 weeks after surgery. At the 8-week time-point, 7 rabbits exhibited good healing at the osteotomy site on the experimental side. At 12 weeks after surgery, 8 rabbits exhibited good healing at the osteotomy site on both sides, but the experimental side showed enhanced compatibility between the plates and surrounding tissue, faster bone formation, a greater bone regeneration mass and better medullary canal structure compared with the control side. In conclusion, PPLLA-rhBMP-2 may be effectively used to treat fracture or nonunion at a non-weight-bearing site.
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Affiliation(s)
- Ning-Feng Zhou
- Department of Spinal Surgery, Shanghai East Hospital Affiliated to Shanghai Tongji University, Shanghai 200120, P.R. China
| | - Yu-Feng Huang
- Department of Spinal Surgery, Shanghai East Hospital Affiliated to Shanghai Tongji University, Shanghai 200120, P.R. China
| | - Jin-Wu Wang
- Department of Orthopedics, Shanghai Ninth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200011, P.R. China
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49
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Morel F, Espuche E, Bounor-Legaré V, Persynn O, Lacroix M. Impact of coated calcium carbonate nanofillers and annealing treatments on the microstructure and gas barrier properties of poly(lactide) based nanocomposite films. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23957] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Floriane Morel
- CNRS, UMR5223, Ingénierie des Matériaux Polymères, 15 Bd. A. Latarjet, Université de Lyon; Université Lyon 1 69622 Villeurbanne France
- SOLVAY spécialités France; Route d'Arles 13129 Salin-de-Giraud France
| | - Eliane Espuche
- CNRS, UMR5223, Ingénierie des Matériaux Polymères, 15 Bd. A. Latarjet, Université de Lyon; Université Lyon 1 69622 Villeurbanne France
| | - Véronique Bounor-Legaré
- CNRS, UMR5223, Ingénierie des Matériaux Polymères, 15 Bd. A. Latarjet, Université de Lyon; Université Lyon 1 69622 Villeurbanne France
| | - Olivia Persynn
- SOLVAY spécialités France; Route d'Arles 13129 Salin-de-Giraud France
| | - Marc Lacroix
- SOLVAY S.A., SBU Advanced Functional Minerals; 310 rue de Ransbeek 1120 Bruxelles Belgium
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50
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Kelnar I, Fortelný I, Kaprálková L, Kratochvíl J, Angelov B, Nevoralová M. Effect of layered silicates on fibril formation and properties of PCL/PLA microfibrillar composites. J Appl Polym Sci 2015. [DOI: 10.1002/app.43061] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Ivan Kelnar
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic; Praha 162 06 Czech Republic
| | - Ivan Fortelný
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic; Praha 162 06 Czech Republic
| | - Ludmila Kaprálková
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic; Praha 162 06 Czech Republic
| | - Jaroslav Kratochvíl
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic; Praha 162 06 Czech Republic
| | - Borislav Angelov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic; Praha 162 06 Czech Republic
| | - Martina Nevoralová
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic; Praha 162 06 Czech Republic
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