1
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The effect of chemical composition on the degradation kinetics of high molecular weight poly(trimethylene carbonate-co-L-lactide). Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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2
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Contreras-Ramírez JM, Monsalve M. Synthesis and characterization of poly(trimetylene carbonate-co-ε-caprolactone) prepared by ring-opening polymerization using samarium(III) acetate as initiator. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2021. [DOI: 10.1080/1023666x.2021.1992580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Meribary Monsalve
- Facultad de Ciencias Químicas, Universidad de Guayaquil, Guayaquil, Ecuador
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3
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Adolfsson KH, Sjöberg I, Höglund OV, Wattle O, Hakkarainen M. In Vivo Versus In Vitro Degradation of a 3D Printed Resorbable Device for Ligation of Vascular Tissue in Horses. Macromol Biosci 2021; 21:e2100164. [PMID: 34339098 DOI: 10.1002/mabi.202100164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/14/2021] [Indexed: 11/09/2022]
Abstract
A resorbable 3D printed polydioxanone (PDO) device is manufactured to facilitate ligation of vascular tissue during surgery. The device must provide sufficient mechanical performance throughout the healing period. Therefore, degradation and mechanical performance of the device are investigated as a function of in vivo and in vitro aging. During aging the PDO device released cyclic and linear water-soluble products. In vivo aging resulted in higher relative number of linear oligomers in comparison to in vitro aging. A major loss of mechanical performance is observed after only 10 days in vivo and the Young's modulus (E) and tensile strength at break (σb ) decreased by 28% and 54%, respectively. This is in contrast to in vitro aging, where no loss of mechanical properties is observed during the same period. The in vivo aged devices exhibit clear holes in the matrices after 28 days, while apparent cracks are observed first after 140 days in vitro. These results highlight the sensitivity of the degradation process of resorbable devices with regards to the interactions of the device with the surrounding environment (tissues) and demonstrate the importance of in vivo testing as compliment to in vitro testing before clinical use of devices.
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Affiliation(s)
- Karin H Adolfsson
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden
| | - Ida Sjöberg
- Department of Clinical Sciences, SLU Swedish University of Agricultural Sciences, Uppsala, Box 7054, 750 07, Sweden
| | - Odd V Höglund
- Department of Clinical Sciences, SLU Swedish University of Agricultural Sciences, Uppsala, Box 7054, 750 07, Sweden
| | - Ove Wattle
- Department of Clinical Sciences, SLU Swedish University of Agricultural Sciences, Uppsala, Box 7054, 750 07, Sweden
| | - Minna Hakkarainen
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Stockholm, 100 44, Sweden
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4
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Yu W, Maynard E, Chiaradia V, Arno MC, Dove AP. Aliphatic Polycarbonates from Cyclic Carbonate Monomers and Their Application as Biomaterials. Chem Rev 2021; 121:10865-10907. [DOI: 10.1021/acs.chemrev.0c00883] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Yu
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Edward Maynard
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Viviane Chiaradia
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Maria C. Arno
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Andrew P. Dove
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
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5
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Chen X, Wu X, Fan Z, Zhao Q, Liu Q. Biodegradable poly(trimethylene carbonate-b
-(L
-lactide-ran
-glycolide)) terpolymers with tailored molecular structure and advanced performance. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4272] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xiaoyu Chen
- Department of Materials Science; Fudan University; Shanghai 200433 China
| | - Xiaomeng Wu
- Department of Materials Science; Fudan University; Shanghai 200433 China
| | - Zhongyong Fan
- Department of Materials Science; Fudan University; Shanghai 200433 China
| | - Qinghua Zhao
- Beijing Advanced Medical Technologies, Ltd. Inc.; Beijing 100085 China
| | - Qing Liu
- The Institute for Biomedical Engineering & Nano Science; School of Medicine Tongji University; Shanghai 200092 China
- The Institute for Translational Nanomedicine, Shanghai East Hospital; Shanghai 200092 China
- Beijing Advanced Medical Technologies, Ltd. Inc.; Beijing 100085 China
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6
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Effect of the Configuration of a Bulky Aluminum Initiator on the Structure of Copolymers of l,l-Lactide with Symmetric Comonomer Trimethylene Carbonate. Polymers (Basel) 2018; 10:polym10010070. [PMID: 30966105 PMCID: PMC6414924 DOI: 10.3390/polym10010070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/09/2018] [Accepted: 01/10/2018] [Indexed: 11/25/2022] Open
Abstract
The effect of configuration of an asymmetric bulky initiator 2,2′-[1,1′-binaphtyl-2,2′-diyl- bis-(nitrylomethilidyne)]diphenoxy aluminum isopropoxide (Ini) on structure of copolymer of asymmetric monomer l,l-lactide (Lac) with symmetric comonomer trimethylene carbonate (Tmc) was studied using polarimetry, dilatometry, Size Exclusion Chromatography (SEC), and Carbon Nuclear Magnetic Resonance (13C NMR). When the S-enantiomer of Ini was used the distribution in copolymer chains at the beginning of polymerization is statistical, with alternacy tendency, changing next through a gradient region to homoblocks of Tmc. However, when R-Ini was used, the product formed was a gradient oligoblock one, with Tmc blocks prevailing at the beginning, changing to Lac blocks dominating at the end part of chains. Initiation of copolymerization with the mixture of both initiator enantiomers (S:R = 6:94) gave a multiblock copolymer of similar features but shorter blocks. Analysis of copolymerization progress required complex analysis of dilatometric data, assuming different molar volume contraction coefficients for units located in different triads. Comonomer reactivity ratios of studied copolymerizations were determined.
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7
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Márquez Y, Cabral T, Lorenzetti A, Franco L, Turon P, Del Valle LJ, Puiggalí J. Incorporation of biguanide compounds into poly(GL)-b-poly(GL-co-TMC-co-CL)-b-poly(GL) monofilament surgical sutures. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:629-640. [PMID: 27987754 DOI: 10.1016/j.msec.2016.10.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/13/2016] [Accepted: 10/23/2016] [Indexed: 10/20/2022]
Abstract
A new biodegradable coating was developed for bioabsorbable monofilament sutures. Specifically, a random copolymer having 35wt-% and 65wt-% of lactide and trimethylene carbonate units showed appropriate flexibility, stickiness and degradation rate, as well as capability to produce a complete and uniform coating. Monofilament sutures of polyglycolide-b-poly(glycolide-co-trimethylene carbonate-co-ε-caprolactone)-b-polyglycolide were loaded with chlorhexidine (CHX) and poly(hexamethylene biguanide) (PHMB) to explore the possibility to achieve antimicrobial activity without adverse cytotoxic effects. To this end, two processes based on single drug adsorption onto the suture surface and incorporation into the coating copolymer were used and subsequently evaluated. Although the second process could be considered more complex, clear benefits were observed in terms of drug loading efficiency, antimicrobial effect and even lack of cytotoxicity. In general, drugs could be loaded in an amount leading to a clear bacteriostatic effect for both Gram-negative and Gram-positive bacteria without causing significant cytotoxicity. Release profiles of PHMB and CHX were clearly different. Specifically, adsorption of the drug onto the fiber surface which prevented complete release was detected for PHMB. This polymer had advantages derived from its high molecular size, which hindered penetration into cells, thus resulting in lower cytotoxicity. Furthermore, bacterial growth kinetics measurements and bacterial adhesion assays showed greater effectiveness of this polymer.
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Affiliation(s)
- Yolanda Márquez
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Av. Diagonal 647, Barcelona E-08028, Spain; B. Braun Surgical S.A., Carretera de Terrasa 121, Rubí, Barcelona, 08191, Spain
| | - Tània Cabral
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Av. Diagonal 647, Barcelona E-08028, Spain
| | - Alice Lorenzetti
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Av. Diagonal 647, Barcelona E-08028, Spain
| | - Lourdes Franco
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Av. Diagonal 647, Barcelona E-08028, Spain
| | - Pau Turon
- B. Braun Surgical S.A., Carretera de Terrasa 121, Rubí, Barcelona, 08191, Spain
| | - Luís J Del Valle
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Av. Diagonal 647, Barcelona E-08028, Spain
| | - Jordi Puiggalí
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, Av. Diagonal 647, Barcelona E-08028, Spain.
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8
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Katharina Reitz A, Sun Q, Wilhelm R, Kuckling D. The use of stable carbene-CO2adducts for the polymerization of trimethylene carbonate. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28432] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Annika Katharina Reitz
- Department of Chemistry; University of Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Qian Sun
- Department of Chemistry; University of Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - René Wilhelm
- Department of Chemistry; University of Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Dirk Kuckling
- Department of Chemistry; University of Paderborn; Warburger Str. 100 33098 Paderborn Germany
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9
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Haramiishi Y, Chanthaset N, Kan K, Akashi M, Ajiro H. Contrast effect on hydrolysis of poly(trimethylene carbonate) depending on accelerated species due to the hydrophilic oligo(ethylene glycol) units at side groups. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.05.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Nitta K, Kimoto A, Watanabe J. Surface properties of amphiphilic graft copolymer containing different oligo segments. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.04.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Surface control of hydrophilicity and degradability with block copolymers composed of lactide and cyclic carbonate bearing methoxyethoxyl groups. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.06.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Reitz A, Wilhelm R, Kuckling D. Ring Opening Polymerization of Organic Carbonates Using CO2
- Carbene Adducts as Effective Organo Catalyst. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/masy.201300109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- A. Reitz
- Department Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - R. Wilhelm
- Department Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - D. Kuckling
- Department Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
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13
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Dong J, Liao L, Shi L, Tan Z, Fan Z, Li S, Lu Z. A bioresorbable cardiovascular stent prepared from L
-lactide, trimethylene carbonate and glycolide terpolymers. POLYM ENG SCI 2013. [DOI: 10.1002/pen.23662] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jianting Dong
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
| | - Lan Liao
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
| | - Li Shi
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
| | - Zaishang Tan
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
| | - Zhongyong Fan
- Department of Materials Science; Fudan University; Shanghai 200433 People's Republic of China
| | - Suming Li
- Department of Interface; Physicochemistry and Polymers; Institut Europeen des Membranes; UMR ENSCM-UM2-CNRS 5635; Universite Montpellier 2; Place Eugene Bataillon 34095 Montpellier cedex 5 France
| | - Zhiqian Lu
- Sixth People's Hospital; Shanghai Jiaotong University; Shanghai 200233 People's Republic of China
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14
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Tempelaar S, Mespouille L, Coulembier O, Dubois P, Dove AP. Synthesis and post-polymerisation modifications of aliphatic poly(carbonate)s prepared by ring-opening polymerisation. Chem Soc Rev 2013; 42:1312-36. [DOI: 10.1039/c2cs35268k] [Citation(s) in RCA: 265] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Polylactide Block Copolymers using Trimethylene Carbonate with Methoxyethoxy Side Groups for Dual Modification of Hydrophilicity and Biodegradability. Macromol Biosci 2012; 12:1315-20. [DOI: 10.1002/mabi.201200143] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 06/07/2012] [Indexed: 11/07/2022]
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16
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Sheng H, Shi J, Feng Y, Wang H, Jiao Y, Sheng H, Zhang Y, Shen Q. Remarkable effect of alkali metal on polymerization of cyclic esters catalyzed by samarium–alkali metal multinuclear alkoxide clusters. Dalton Trans 2012; 41:9232-40. [DOI: 10.1039/c2dt30677h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Amsden BG. Delivery approaches for angiogenic growth factors in the treatment of ischemic conditions. Expert Opin Drug Deliv 2011; 8:873-90. [DOI: 10.1517/17425247.2011.577412] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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18
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Ling J, Dai Y, Zhu Y, Sun W, Shen Z. Ring-opening polymerization of 1-methyltrimethylene carbonate by rare earth initiators. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24166] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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19
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Zhu KJ, Zhang JX, Wang C, Yasuda H, Ichimaru A, Yamamoto K. Preparation andin vitrorelease behaviour of 5-fluorouracil-loaded microspheres based on poly (L-lactide) and its carbonate copolymers. J Microencapsul 2010. [DOI: 10.3109/02652040309178084] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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20
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Zhang L, Wang Y, Shen L, Zhang T. Ring-Opening Copolymerization of 2,2-Dimethyltrimethylene Carbonate and ε-Caprolactone Using Rare Earth Aryloxides Substituted by Various Alkyl Groups. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Amsden BG, Timbart L, Marecak D, Chapanian R, Tse MY, Pang SC. VEGF-induced angiogenesis following localized delivery via injectable, low viscosity poly(trimethylene carbonate). J Control Release 2010; 145:109-15. [DOI: 10.1016/j.jconrel.2010.03.029] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2010] [Revised: 03/09/2010] [Accepted: 03/30/2010] [Indexed: 10/19/2022]
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22
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Amsden BG. Liquid, Injectable, Hydrophobic and Biodegradable Polymers as Drug Delivery Vehicles. Macromol Biosci 2010; 10:825-35. [DOI: 10.1002/mabi.200900465] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Peng H, Ling J, Liu J, Zhu N, Ni X, Shen Z. Controlled enzymatic degradation of poly(ɛ-caprolactone)-based copolymers in the presence of porcine pancreatic lipase. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2009.12.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Ring-opening polymerization of 2,2-dimethyltrimethylene carbonate using rare earth aryl oxides substituted by alkyl groups. Sci China Chem 2010. [DOI: 10.1007/s11426-010-0077-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Xu N, Liu X, Liu Y, Zhu W, Chen F, Shen Z. Synthesis and properties of random copolymers of 2,2-dimethyltrimethylene carbonate and ethylene carbonate catalyzed by lanthanide tris(2,6-di-tert-butyl-4-methylphenolate). J Appl Polym Sci 2010. [DOI: 10.1002/app.30514] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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26
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Timbart L, Tse MY, Pang SC, Babasola O, Amsden BG. Low Viscosity Poly(trimethylene carbonate) for Localized Drug Delivery: Rheological Properties andin vivoDegradation. Macromol Biosci 2009; 9:786-94. [DOI: 10.1002/mabi.200800318] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Kim BS, Oh JM, Cho JS, Lee SH, Lee B, Khang G, Lee HB, Kim MS. Comparison of micelles formed by amphiphilic poly(ethylene glycol)-b-poly(trimethylene carbonate) star block copolymers. J Appl Polym Sci 2009. [DOI: 10.1002/app.29179] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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28
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Zhang JX, Chen D, Wang SJ, Zhu KJ. Optimizing double emulsion process to decrease the burst release of protein from biodegradable polymer microspheres. J Microencapsul 2008; 22:413-22. [PMID: 16214788 DOI: 10.1080/02652040500098994] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The process parameters such as the compositions of inner and outer aqueous phase and emulsification technique of the primary emulsion were optimized to decrease the burst release of BSA from biodegradable polymer microspheres in double emulsion method. It was found that diminished burst release of -14% was achieved for the microspheres produced by formulations, where no phosphate was present in the inner water phase (non-buffered system). Primary emulsion made by probe sonication rather than homogenization or mechanical stirring led to microspheres with insignificant burst effect. Microspheres obtained using 0.1% aqueous Tween 80 solution as the outer aqueous phase, frequently exhibit reduced burst effect of 2.7%. Low microsphere yield (52.1%), however, was observed. Microsphere yield was, therefore, enhanced by addition of additive such as sodium chloride, glucose or mannitol into the outer aqueous phase. Decrease in BSA entrapment was observed in the presence of sodium chloride, but reduction in entrapment efficiency was observed in the case of glucose. Burst release increased from 2.7% to 9.5% or 3.4% as 2.5% sodium chloride or 7.5% glucose was added into the outer aqueous phase respectively. Marked burst release (>20%) was observed in the presence of additive of higher concentration independent of sodium chloride or glucose. As far as surfactant type was concerned, diminished burst was found when PVP or Tween 80 rather than PVA was utilized as the surfactant during microsphere preparation. In addition to PLGA, the copolymers of L-lactide (LLA) and dimethyl trimethylene carbonate (DTC) or trimethylene carbonate (TMC) were also evaluated. Insignificant burst effect was found for the microspheres composed of DTC or TMC copolymers.
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Affiliation(s)
- J X Zhang
- Institute of Polymer Science, Zhejiang University, Hangzhou, P.R. China
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29
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Darensbourg DJ, Choi W, Karroonnirun O, Bhuvanesh N. Ring-Opening Polymerization of Cyclic Monomers by Complexes Derived from Biocompatible Metals. Production of Poly(lactide), Poly(trimethylene carbonate), and Their Copolymers. Macromolecules 2008. [DOI: 10.1021/ma800078t] [Citation(s) in RCA: 221] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Wonsook Choi
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
| | - Osit Karroonnirun
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
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30
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Huhtala A, Pohjonen T, Salminen L, Salminen A, Kaarniranta K, Uusitalo H. In vitro biocompatibility of degradable biopolymers in cell line cultures from various ocular tissues: extraction studies. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:645-9. [PMID: 17619963 DOI: 10.1007/s10856-007-3192-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2006] [Accepted: 05/22/2007] [Indexed: 05/16/2023]
Abstract
In vitro biocompatibility of 50:50 PDLGA, 85:15 PDLGA, and Inion GTR(TM) membrane was evaluated in cell line cultures from various ocular tissues, in human corneal epithelial cells (HCE), rabbit stromal fibroblasts (SIRC), bovine corneal endothelial cells (BCE), human conjunctival epithelial cells (IOBA-NHC), and human retinal pigment epithelial cells (ARPE-19). To study the toxicity of degradation products, the biomaterials were extracted in phosphate buffered saline at 70 degrees C for 24 h. The cell cultures were exposed to biomaterial extract diluted in medium (1:1-1:8) and the biocompatibility was evaluated by the WST-1 cytotoxicity/cell proliferation test. In all experiments without pH neutralization, cell viability increased with decreasing biomaterial extract volume. The highest extraction ratio 1:1 of PDLGA 50:50 decreased viability from 5-20%, from the control level, depending on the cell type. The corresponding cell viability values for PDLGA 85:15 and Inion GTR membrane ranged from 47-87% and 66-92%, respectively. When the pH of biomaterial extract was neutralized, Inion GTR membrane and PDLGA 85:15 had no effect on viability. BCE, HCE, and IOBA-NHC appeared to the most sensitive cell types, while SIRC and ARPE-19 were more resistant. The results of our in vitro studies suggest that the polymers tested are satisfactorily biocompatible.
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Affiliation(s)
- Anne Huhtala
- Medical School, University of Tampere, Tampere, Finland.
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31
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Huhtala A, Pohjonen T, Salminen L, Salminen A, Kaarniranta K, Uusitalo H. In vitro biocompatibility of degradable biopolymers in cell line cultures from various ocular tissues: direct contact studies. J Biomed Mater Res A 2007; 83:407-13. [PMID: 17450585 DOI: 10.1002/jbm.a.31319] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Synthetic biodegradable polymers have many potential therapeutic applications. In ophthalmology, biodegradable polymers have been used as viscoelastic agents and surgical implants. Other potential applications include controlled release of drugs and growth factors, gene therapy, and tissue engineering. In the present study, in vitro biocompatibility of three biodegradable polymers, 50:50 PDLGA, 85:15 PDLGA, and Inion GTR membrane was evaluated in comparison to tissue culture polystyrene by investigating cell proliferation and potential acute toxicity by the WST-1 cytotoxicity/cell proliferation test, the ATP test, and the lactate dehydrogenase (LDH) test. Evaluations were conducted with cell line cultures from various ocular tissues, human corneal epithelial cells (HCE), rabbit stromal fibroblasts (SIRC), bovine corneal endothelial cells (BCE), human conjunctival epithelial cells (IOBA-NHC), and human retinal pigment epithelial cells (ARPE-19) by direct contact studies by plating the cells on the polymer film specimens in 96-wells. The proliferation results show that cell lines from various ocular tissues attached and grew on PDLGA 50:50, PDLGA 85:15, and Inion GTR membrane. Cytotoxicity experiments with the LDH and ATP tests showed no or extremely slight toxic adverse effects. These polymers have potential to be used as scaffolds in cell transplantation devices or as surgical implants.
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Affiliation(s)
- A Huhtala
- University of Tampere Medical School, and Department of Ophthalmology, Tampere University Hospital, Tampere, Finland.
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Amsden B. Curable, biodegradable elastomers: emerging biomaterials for drug delivery and tissue engineering. SOFT MATTER 2007; 3:1335-1348. [PMID: 32900112 DOI: 10.1039/b707472g] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Biodegradable elastomers have a number of potential applications in the biomedical area, especially in the emerging field of soft-tissue engineering where the mechanical properties of the polymer scaffold should match those of the tissue to be grown. An increasing number of synthesis strategies have been employed in order to prepare such elastomers. In this review, these synthesis strategies and the properties of these elastomers are outlined. The factors that influence the characteristics of these elastomers including mechanical properties, degradation rate, and mechanical property change during degradation, are discussed in terms of the design of the elastomer and their advantages and disadvantages for the biomedical applications considered.
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Affiliation(s)
- Brian Amsden
- Department of Chemical Engineering, Queen's University, Kingston, ON, Canada.
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Sharifpoor S, Amsden B. In vitro release of a water-soluble agent from low viscosity biodegradable, injectable oligomers. Eur J Pharm Biopharm 2007; 65:336-45. [PMID: 17084069 DOI: 10.1016/j.ejpb.2006.09.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Revised: 09/14/2006] [Accepted: 09/20/2006] [Indexed: 11/24/2022]
Abstract
Low-molecular-weight poly(epsilon-caprolactone-co-1,3-trimethylene carbonate) and poly(1,3-trimethylene carbonate) are potential vehicles for the regio-specific delivery of water-soluble agents. In this paper, the characteristics and the mechanism governing the in vitro release of a model water-soluble drug, vitamin B12, from these polymer vehicles were determined. The loading of vitamin B12 was kept to 1 w/w%. The oligomers examined ranged from amorphous, high viscosity to crystalline but low viscosity. The oligomers did not degrade appreciably in vitro. The total fraction of vitamin B12 released increased as the crystallinity of the oligomers decreased, reaching nearly total release only for the completely amorphous oligomers. The rate of release was fastest for the amorphous oligomers and dependent on their viscosity. Inclusion of a more osmotically active agent, trehalose, into the vitamin B12 particles through co-lyophilization resulted in enhanced total fraction released and a faster release rate. The results are consistent with an osmotically driven release mechanism.
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Affiliation(s)
- Soroor Sharifpoor
- Department of Chemical Engineering, Queen's University, Kingston, Canada
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Zhao B, Lu CR, Shen Q. Ring-opening polymerization of trimethylenecarbonate and its copolymerization with ε-caprolactone by lanthanide (II) aryloxide complexes. J Appl Polym Sci 2007. [DOI: 10.1002/app.26761] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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35
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Mei H, Zhong Z, Long F, Zhuo R. Synthesis and Characterization of Novel Glycerol-Derived Polycarbonates with Pendant Hydroxyl Groups. Macromol Rapid Commun 2006. [DOI: 10.1002/marc.200600484] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Contreras J, Dávila D. Ring-opening copolymerization of L
-lactide with ε-caprolactone initiated by diphenylzinc. POLYM INT 2006. [DOI: 10.1002/pi.2050] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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37
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Abstract
Copolymerization of lactide, epsilon-caprolactone, and trimethylene carbonate is performed. The synthesis is focused on obtaining materials with adequate properties for application as a suture coating that could contain an antimicrobial agent like triclosan. An amorphous character, a low glass transition temperature, a moderate susceptibility to degradation, and a hydrophobic nature are the conditions required for the optimal behavior of this coating. These properties can be attained with a copolymer of composition 10:60:30. Triclosan is added to the surface of polyglycolide threads and its release is studied in different media with high-performance liquid chromatography. The influence of the temperature, the diameter of the thread, the initial concentration of the antibacterial agent, and the applied procedure on the incorporation of triclosan is also evaluated. A total release of triclosan is attained after a few days of exposure to a Dulbecco's based medium, whereas equilibrium concentrations are reached when a Sörensen hydrophilic medium is used. Partition and diffusion coefficients are also estimated.
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Affiliation(s)
- Raül Zurita
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, 08028 Barcelona, Spain
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Copolymerization of trimethylene carbonate and 2,2-dimethyltrimethylene carbonate by rare earth calixarene complexes. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.07.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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39
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Hu Y, Zhu K. Synthesis, characterization and degradation of poly(2,2-dimethyl trimethylene carbonate-co-ϵ-caprolactone-co-glycolide). Polym Degrad Stab 2004. [DOI: 10.1016/j.polymdegradstab.2003.12.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yang J, Hao Q, Liu X, Ba C, Cao A. Novel Biodegradable Aliphatic Poly(butylene succinate-co-cyclic carbonate)s with Functionalizable Carbonate Building Blocks. 1. Chemical Synthesis and Their Structural and Physical Characterization. Biomacromolecules 2003; 5:209-18. [PMID: 14715028 DOI: 10.1021/bm0343242] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study presents chemical synthesis, structural, and physical characterization of novel biodegradable aliphatic poly(butylene succinate-co-cyclic carbonate)s P(BS-co-CC) bearing functional carbonate building blocks. First, five kinds of six-membered cyclic carbonate monomers, namely, trimethylene carbonate (TMC), 1-methyl-1,3-trimethylene carbonate (MTMC), 2,2-dimethyl-1,3-trimethylene carbonate (DMTMC), 5-benzyloxytrimethylene carbonate (BTMC), and 5-ethyl-5-benzyloxymethyl trimethylene carbonate (EBTMC), were well prepared from ethyl chloroformate and corresponding diols at 0 degrees C in THF solution with our modified synthetic strategies. Then, a series of new P(BS-co-CC)s were synthesized at 210 degrees C through a simple combination of poly-condensation and ring-opening-polymerization (ROP) of hydroxyl capped PBS macromers and the prepared carbonate monomers, and titanium tetra-isopropoxide Ti(i-OPr)4 was used as a more suitable catalyst of 5 candidate catalysts which could concurrently catalyze poly-condensation and ROP. By means of NMR, GPC, FTIR, and thermal analytical instruments, macromolecular structures and physical properties have been characterized for these aliphatic poly(ester carbonate)s. The experimental results indicated that novel biodegradable P(BS-co-CC)s were successfully synthesized with number average molecular weight Mn ranging from 24.3 to 99.6 KDa and various CC molar contents without any detectable decarboxylation and that the more bulky side group was attached to a cyclic carbonate monomer, the lower reactivity for its copolymerization would be observed. The occurrences of 13C NMR signal splitting of succinyl carbonyl attributed to the BS building blocks could be proposed due to the randomized sequences of BS and CC building blocks. FTIR characterization indicated two distinct absorption bands at 1716 and 1733 approximately 1735 cm(-1), respectively, stemming from carbonyl stretching modes for corresponding BS and CC units. With regard to their thermal properties, it is seen that the synthesized P(BS-co-CC)s exhibited thermal degradation temperatures 10 approximately 20 degrees C higher than that of PBS. On the basis of the synthesized P(BS-co-BTMC)s, new aliphatic poly(butylene succinate-co-5-hydroxy trimethylene carbonate)s were further synthesized, bearing hydrophilic hydroxyl pendant functional groups through an optimized Pd/C catalyzed hydrogenation. These semi-crystalline new biodegradable aliphatic copolymers with tunable physical properties and functional carbonate building blocks might be expected as potential new biomaterials.
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Affiliation(s)
- Jing Yang
- Polymer Materials Laboratory, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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41
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Yu F, Zhuo R. Synthesis, Characterization, and Degradation Behaviors of End-Group-Functionalized Poly(trimethylene carbonate)s. Polym J 2003. [DOI: 10.1295/polymj.35.671] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Yokoe M, Aoi K, Okada M. Biodegradable polymers based on renewable resources. VII. Novel random and alternating copolycarbonates from 1,4:3,6-dianhydrohexitols and aliphatic diols. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pola.10772] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hu Y, Zhu KJ. Preparation, characterization and properties of poly(2,2-dimethyl trimethylene carbonate-co-ε-caprolactone)-block-poly(ethylene glycol). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2003; 14:1363-76. [PMID: 14870940 DOI: 10.1163/156856203322599707] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Degradable terpolymers were synthesized by bulk copolymerization of 2,2-dimethyl trimethyle necarbonate (DTC), epsilon-caprolactone (CL) and poly(ethylene glycol) (PEG) using stannous octoate as catalyst at 140 degrees C for 36 h. The molar ratio in feed of DTC to CL was fixed at 20:80. The molecular weight and the mol% of PEG were varied in order to obtain copolymers with different properties. The copolymers were characterized by 1H-NMR, 13C-NMR, FT-IR, GPC and DSC. It was found that the hydrophilicity of these materials increased with increasing PEG content in the copolymers, according to the measurements of static contact angles of distilled water on the surface of polymer films. Mechanical tests and hydrolytic degradation assays showed that copolymers of different degradability and mechanical properties could be tailored by adjusting the compositions. For the copolymer T-4 (11.9 mol% of PEG with Mn 2000), the tensile strength and the elastic modulus could reach 6.2 MPa and 25 MPa, respectively. It took only 4 weeks for the copolymer T-4 to degrade to 83% (M(n,t)/M(n,0)) and 10 weeks to 63% in 0.1 M PBS at pH 7.4 and 37 degrees C. There was no obvious acceleration of degradation rate in vivo in comparison with that in vitro. These materials might be useful for nerve regeneration guides and other biomedical applications.
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Affiliation(s)
- Yingqian Hu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
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Okada M, Yokoe M, Aoi K. Biodegradable polymers based on renewable resources. VI. Synthesis and biodegradability of poly(ester carbonate)s containing 1,4:3,6-dianhydro-D-glucitol and sebacic acid units. J Appl Polym Sci 2002. [DOI: 10.1002/app.10995] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Ling J, Shen Z, Huang Q. Novel Single Rare Earth Aryloxide Initiators for Ring-Opening Polymerization of 2,2-Dimethyltrimethylene Carbonate. Macromolecules 2001. [DOI: 10.1021/ma0107657] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Ling
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhiquan Shen
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiaohong Huang
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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46
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Breitenbach A, Pistel K, Kissel T. Biodegradable comb polyesters. Part II. Erosion and release properties of poly(vinyl alcohol)- g -poly(lactic- co -glycolic acid). POLYMER 2000. [DOI: 10.1016/s0032-3861(99)00710-7] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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47
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