101
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Amarasekara AS, Garcia‐Obergon R, Thompson AK. Vanillin‐based polymers: IV. Hydrovanilloin epoxy resins. J Appl Polym Sci 2018. [DOI: 10.1002/app.47000] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Rocio Garcia‐Obergon
- Department of Chemistry Prairie View A&M University Prairie View Texas 77446 USA
| | - Audie K. Thompson
- Department of Chemical Engineering Prairie View A&M University Prairie View Texas 77446 USA
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102
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Zavrazhnov SA, Esipovich AL, Danov SM, Zlobin SY, Belousov AS. Catalytic Conversion of Glycerol to Lactic Acid: State of the Art and Prospects. KINETICS AND CATALYSIS 2018. [DOI: 10.1134/s0023158418040171] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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103
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Hu C, Duan R, Yang S, Pang X, Chen X. CO2 Controlled Catalysis: Switchable Homopolymerization and Copolymerization. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00696] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chenyang Hu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ranlong Duan
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Shengcai Yang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Xuan Pang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
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104
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Rokaya D, Srimaneepong V, Sapkota J, Qin J, Siraleartmukul K, Siriwongrungson V. Polymeric materials and films in dentistry: An overview. J Adv Res 2018; 14:25-34. [PMID: 30364755 PMCID: PMC6198729 DOI: 10.1016/j.jare.2018.05.001] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 05/01/2018] [Accepted: 05/01/2018] [Indexed: 11/13/2022] Open
Abstract
The use of polymeric materials (PMs) and polymeric films (PMFs) has increased in medicine and dentistry. This increasing interest is attributed to not only the excellent surfaces of PMs and PMFs but also their desired mechanical and biological properties, low production cost, and ease in processing, allowing them to be tailored for a wide range of applications. Specifically, PMs and PMFs are used in dentistry for their antimicrobial, drug delivery properties; in preventive, restorative and regenerative therapies; and for corrosion and friction reduction. PMFs such as acrylic acid copolymers are used as a dental adhesive; polylactic acids are used for dental pulp and dentin regeneration, and bioactive polymers are used as advanced drug delivery systems. The objective of this article was to review the literatures on the latest advancements in the use of PMs and PMFs in medicine and dentistry. Published literature (1990–2017) on PMs and PMFs for use in medicine and dentistry was reviewed using MEDLINE/PubMed and ScienceDirect resources. Furthermore, this review also explores the diversity of latest PMs and PMFs that have been utilized in dental applications, and analyzes the benefits and limitations of PMs and PMFs. Most of the PMs and PMFs have shown to improve the biomechanical properties of dental materials, but in future, more clinical studies are needed to create better treatment guidelines for patients.
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Affiliation(s)
- Dinesh Rokaya
- Biomaterial and Material for Dental Treatment, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Viritpon Srimaneepong
- Biomaterial and Material for Dental Treatment, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Janak Sapkota
- Institute of Polymer Processing, Department of Polymer Engineering and Science, Montanuniversitaet Leoben, Otto-Glockel Strasse 2, 800 Leoben, Austria
| | - Jiaqian Qin
- Metallurgy and Materials Science Research Institute (MMRI), Chulalongkorn University, Bangkok, Thailand
| | - Krisana Siraleartmukul
- Metallurgy and Materials Science Research Institute (MMRI), Chulalongkorn University, Bangkok, Thailand
| | - Vilailuck Siriwongrungson
- College of Advanced Manufacturing Innovations, King Mongkut's Institute of Technology, Ladkrabang, Thailand
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105
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Morales-Huerta JC, Martínez de Ilarduya A, León S, Muñoz-Guerra S. Isomannide-Containing Poly(butylene 2,5-furandicarboxylate) Copolyesters via Ring Opening Polymerization. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00487] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Juan Carlos Morales-Huerta
- Department d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647,8028 Barcelona, Spain
| | - Antxon Martínez de Ilarduya
- Department d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647,8028 Barcelona, Spain
| | - Salvador León
- Departamento de Ingeniería Química, Universidad Politécnica de Madrid, ETSIIM, Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Sebastián Muñoz-Guerra
- Department d’Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647,8028 Barcelona, Spain
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106
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Hu CY, Duan RL, Yang JW, Dong SJ, Sun ZQ, Pang X, Wang XH, Chen XS. Enolic Schiff Base Zinc Amide Complexes: Highly Active Catalysts for Ring-Opening Polymerization of Lactide and ε-Caprolactone. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2129-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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107
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Novy V, Brunner B, Nidetzky B. L-Lactic acid production from glucose and xylose with engineered strains of Saccharomyces cerevisiae: aeration and carbon source influence yields and productivities. Microb Cell Fact 2018; 17:59. [PMID: 29642896 PMCID: PMC5894196 DOI: 10.1186/s12934-018-0905-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/31/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Saccharomyces cerevisiae, engineered for L-lactic acid production from glucose and xylose, is a promising production host for lignocellulose-to-lactic acid processes. However, the two principal engineering strategies-pyruvate-to-lactic acid conversion with and without disruption of the competing pyruvate-to-ethanol pathway-have not yet resulted in strains that combine high lactic acid yields (YLA) and productivities (QLA) on both sugar substrates. Limitations seemingly arise from a dependency on the carbon source and the aeration conditions, but the underlying effects are poorly understood. We have recently presented two xylose-to-lactic acid converting strains, IBB14LA1 and IBB14LA1_5, which have the L-lactic acid dehydrogenase from Plasmodium falciparum (pfLDH) integrated at the pdc1 (pyruvate decarboxylase) locus. IBB14LA1_5 additionally has its pdc5 gene knocked out. In this study, the influence of carbon source and oxygen on YLA and QLA in IBB14LA1 and IBB14LA1_5 was investigated. RESULTS In anaerobic fermentation IBB14LA1 showed a higher YLA on xylose (0.27 g g Xyl-1 ) than on glucose (0.18 g g Glc-1 ). The ethanol yields (YEtOH, 0.15 g g Xyl-1 and 0.32 g g Glc-1 ) followed an opposite trend. In IBB14LA1_5, the effect of the carbon source on YLA was less pronounced (~ 0.80 g g Xyl-1 , and 0.67 g g Glc-1 ). Supply of oxygen accelerated glucose conversions significantly in IBB14LA1 (QLA from 0.38 to 0.81 g L-1 h-1) and IBB14LA1_5 (QLA from 0.05 to 1.77 g L-1 h-1) at constant YLA (IBB14LA1 ~ 0.18 g g Glc-1 ; IBB14LA1_5 ~ 0.68 g g Glc-1 ). In aerobic xylose conversions, however, lactic acid production ceased completely in IBB14LA1 and decreased drastically in IBB14LA1_5 (YLA aerobic ≤ 0.25 g g Xyl-1 and anaerobic ~ 0.80 g g Xyl-1 ) at similar QLA (~ 0.04 g L-1 h-1). Switching from aerobic to microaerophilic conditions (pO2 ~ 2%) prevented lactic acid metabolization, observed for fully aerobic conditions, and increased QLA and YLA up to 0.11 g L-1 h-1 and 0.38 g g Xyl-1 , respectively. The pfLDH and PDC activities in IBB14LA1 were measured and shown to change drastically dependent on carbon source and oxygen. CONCLUSION Evidence from conversion time courses together with results of activity measurements for pfLDH and PDC show that in IBB14LA1 the distribution of fluxes at the pyruvate branching point is carbon source and oxygen dependent. Comparison of the performance of strain IBB14LA1 and IBB14LA1_5 in conversions under different aeration conditions (aerobic, anaerobic, and microaerophilic) further suggest that xylose, unlike glucose, does not repress the respiratory response in both strains. This study proposes new genetic engineering targets for rendering genetically engineering S. cerevisiae better suited for lactic acid biorefineries.
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Affiliation(s)
- Vera Novy
- Institute of Biotechnology and Biochemical Engineering, NAWI Graz, Graz University of Technology, Petersgasse 12/I, 8010, Graz, Austria
| | - Bernd Brunner
- Institute of Biotechnology and Biochemical Engineering, NAWI Graz, Graz University of Technology, Petersgasse 12/I, 8010, Graz, Austria
| | - Bernd Nidetzky
- Institute of Biotechnology and Biochemical Engineering, NAWI Graz, Graz University of Technology, Petersgasse 12/I, 8010, Graz, Austria. .,Austrian Centre of Industrial Biotechnology, Graz, Austria.
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108
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Pang X, Duan R, Li X, Hu C, Wang X, Chen X. Breaking the Paradox between Catalytic Activity and Stereoselectivity: rac-Lactide Polymerization by Trinuclear Salen–Al Complexes. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02662] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Xuan Pang
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Ranlong Duan
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Xiang Li
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Chenyang Hu
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
- University of
Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xianhong Wang
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
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109
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Malafeev KV, Moskalyuk OA, Yudin VE, Elokhovskii VY, Popova EN, Litvinova LS, Suslov DN, Ivan’kova EM. Synthesis and properties of fibers based on polylactide stereocomplexes. RUSS J APPL CHEM+ 2017. [DOI: 10.1134/s1070427217070011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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110
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Therias S, Murariu M, Dubois P. Bionanocomposites based on PLA and halloysite nanotubes: From key properties to photooxidative degradation. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.06.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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111
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Tsuji H, Ozawa R, Arakawa Y. Stereocomplex Crystallization of Star-Shaped Four-Armed Stereo Diblock Poly(lactide) from the Melt: Effects of Incorporated Linear One-Armed Poly(l-lactide) or Poly(d-lactide). J Phys Chem B 2017; 121:9936-9946. [DOI: 10.1021/acs.jpcb.7b07420] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hideto Tsuji
- Department of Environmental
and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology,
Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Ryota Ozawa
- Department of Environmental
and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology,
Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Yuki Arakawa
- Department of Environmental
and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology,
Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
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112
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Cheng B, Qian L, Qian HJ, Lu ZY, Cui S. Effects of stereo-regularity on the single-chain mechanics of polylactic acid and its implications on the physical properties of bulk materials. NANOSCALE 2017; 9:14312-14316. [PMID: 28936502 DOI: 10.1039/c7nr06483g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The material properties of polylactic acid (PLA) are largely determined by its stereo-regularity (tacticity). To find out the origin at the molecular level, the single-chain mechanics of poly-l-lactic acid (PLLA) and poly-d,l-lactide (PDLLA) were comparatively investigated by single-molecule atomic force microscopy (AFM). At a low concentration, PLLA adopted a random-coil conformation in a good solvent. At a high concentration, however, the PLLA chain can be induced into a helix, which consumed additional energy during unfolding by further stretching. Due to the random arrangement of l- and d-repeating units in the PDLLA chain, PDLLA adopts a random-coil conformation at all concentrations. The difference in single-chain mechanics of PLLA and PDLLA at high concentrations may be the cause of their different macroscopic properties. This is the first report to reveal the stereo-regularity-dependent mechanics of a polymer at the single-molecule level, which may help to bridge the gap between understanding single-molecule and materials properties.
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Affiliation(s)
- Bo Cheng
- Key Lab of Advanced Technologies of Materials, Ministry of Education of China, Southwest Jiaotong University, Chengdu 610031, P. R. China.
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113
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Trongsatitkul T, Chaiwong S. In situ
fibre-reinforced composite films of poly(lactic acid)/low-density polyethylene blends: effects of composition on morphology, transport and mechanical properties. POLYM INT 2017. [DOI: 10.1002/pi.5449] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Tatiya Trongsatitkul
- School of Polymer Engineering; Suranaree University of Technology; Nakhon Ratchasima Thailand
| | - Saowapa Chaiwong
- School of Agro-industry; Mae Fah Luang University; Chiang Rai Thailand
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114
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Effect of the different architectures and molecular weights on stereocomplex in enantiomeric polylactides-b-MPEG block copolymers. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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115
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Synthesis of poly(l-lactide) by static mixing reaction technique via ring-opening polymerization of l-lactide. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.04.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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116
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Gonçalves C, Gonçalves IC, Magalhães FD, Pinto AM. Poly(lactic acid) Composites Containing Carbon-Based Nanomaterials: A Review. Polymers (Basel) 2017; 9:E269. [PMID: 30970948 PMCID: PMC6431974 DOI: 10.3390/polym9070269] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 06/30/2017] [Accepted: 07/04/2017] [Indexed: 11/27/2022] Open
Abstract
Poly(lactic acid) (PLA) is a green alternative to petrochemical commodity plastics, used in packaging, agricultural products, disposable materials, textiles, and automotive composites. It is also approved by regulatory authorities for several biomedical applications. However, for some uses it is required that some of its properties be improved, namely in terms of thermo-mechanical and electrical performance. The incorporation of nanofillers is a common approach to attain this goal. The outstanding properties of carbon-based nanomaterials (CBN) have caused a surge in research works dealing with PLA/CBN composites. The available information is compiled and reviewed, focusing on PLA/CNT (carbon nanotubes) and PLA/GBM (graphene-based materials) composites. The production methods, and the effects of CBN loading on PLA properties, namely mechanical, thermal, electrical, and biological, are discussed.
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Affiliation(s)
- Carolina Gonçalves
- LEPABE-Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, Porto 4200-465, Portugal.
| | - Inês C Gonçalves
- INEB-National Institute of Biomedical Engineering, University of Porto, Rua do Campo Alegre, 823, Porto 4150-180, Portugal.
- i3S-Institute for Innovation and Health Research, University of Porto, Rua Alfredo Allen, 208, Porto 4200-135, Portugal.
| | - Fernão D Magalhães
- LEPABE-Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, Porto 4200-465, Portugal.
| | - Artur M Pinto
- LEPABE-Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, Porto 4200-465, Portugal.
- INEB-National Institute of Biomedical Engineering, University of Porto, Rua do Campo Alegre, 823, Porto 4150-180, Portugal.
- i3S-Institute for Innovation and Health Research, University of Porto, Rua Alfredo Allen, 208, Porto 4200-135, Portugal.
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117
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Jiang Z, Chang Y, Chen Z. Catalyst free synthesis of poly(l
-lactic acid)-poly(propylene glycol) multiblock copolymers and their properties. J Appl Polym Sci 2017. [DOI: 10.1002/app.45299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ziyan Jiang
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 China
| | - Yue Chang
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 China
| | - Zhize Chen
- College of Chemistry, Chemical Engineering and Biotechnology; Donghua University; Shanghai 201620 China
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118
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Microstructure and melting behavior of a solution-cast polylactide stereocomplex: Effect of annealing. J Appl Polym Sci 2017. [DOI: 10.1002/app.44626] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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119
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Zhang B, Bian X, Xiang S, Li G, Chen X. Synthesis of PLLA-based block copolymers for improving melt strength and toughness of PLLA by in situ reactive blending. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2016.11.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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120
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Guo Y, Shao J, Hou H. The toughening behavior of PLLA and its asymmetric PLLA/PDLA blends with lower optical purity. J Appl Polym Sci 2017. [DOI: 10.1002/app.44730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yanmei Guo
- College of Chemistry and Chemical Engineering; JiangXi Normal University; Nanchang 330022 China
| | - Jun Shao
- College of Chemistry and Chemical Engineering; JiangXi Normal University; Nanchang 330022 China
| | - Haoqing Hou
- College of Chemistry and Chemical Engineering; JiangXi Normal University; Nanchang 330022 China
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121
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122
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Li J, Ding J, Liu T, Liu JF, Yan L, Chen X. Poly(lactic acid) Controlled Drug Delivery. INDUSTRIAL APPLICATIONS OF POLY(LACTIC ACID) 2017. [DOI: 10.1007/12_2017_11] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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123
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Shao J, Guo Y, Ye S, Xie B, Xu Y, Hou H. The morphology and growth of PLA stereocomplex in PLLA/PDLA blends with low molecular weights. POLYMER SCIENCE SERIES A 2017. [DOI: 10.1134/s0965545x1701014x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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124
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Zhang B, Sun B, Bian X, Li G, Chen X. High Melt Strength and High Toughness PLLA/PBS Blends by Copolymerization and in Situ Reactive Compatibilization. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03151] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bao Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Bin Sun
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xinchao Bian
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Gao Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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125
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Murariu M, Dubois P. PLA composites: From production to properties. Adv Drug Deliv Rev 2016; 107:17-46. [PMID: 27085468 DOI: 10.1016/j.addr.2016.04.003] [Citation(s) in RCA: 349] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 03/22/2016] [Accepted: 04/04/2016] [Indexed: 01/15/2023]
Abstract
Poly(lactic acid) or polylactide (PLA), a biodegradable polyester produced from renewable resources, is used for various applications (biomedical, packaging, textile fibers and technical items). Due to its inherent properties, PLA has a key-position in the market of biopolymers, being one of the most promising candidates for further developments. Unfortunately, PLA suffers from some shortcomings, whereas for the different applications specific end-use properties are required. Therefore, the addition of reinforcing fibers, micro- and/or nanofillers, and selected additives within PLA matrix is considered as a powerful method for obtaining specific end-use characteristics and major improvements of properties. This review highlights recent developments, current results and trends in the field of composites based on PLA. It presents the main advances in PLA properties and reports selected results in relation to the preparation and characterization of the most representative PLA composites. To illustrate the possibility to design the properties of composites, a section is devoted to the production and characterization of innovative PLA-based products filled with thermally-treated calcium sulfate, a by-product from the lactic acid production process. Moreover, are emphasized the last tendencies strongly evidenced in the case of PLA, i.e., the high interest to diversify its uses by moving from biomedical and packaging (biodegradation properties, "disposables") to technical applications ("durables").
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Affiliation(s)
- Marius Murariu
- Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons & Materia Nova Research Centre, Place du Parc 20, 7000 Mons, Belgium.
| | - Philippe Dubois
- Center of Innovation and Research in Materials and Polymers (CIRMAP), Laboratory of Polymeric and Composite Materials (LPCM), University of Mons & Materia Nova Research Centre, Place du Parc 20, 7000 Mons, Belgium.
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126
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Lakkireddy HR, Bazile D. Building the design, translation and development principles of polymeric nanomedicines using the case of clinically advanced poly(lactide(glycolide))-poly(ethylene glycol) nanotechnology as a model: An industrial viewpoint. Adv Drug Deliv Rev 2016; 107:289-332. [PMID: 27593265 DOI: 10.1016/j.addr.2016.08.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 08/19/2016] [Accepted: 08/27/2016] [Indexed: 12/16/2022]
Abstract
The design of the first polymeric nanoparticles could be traced back to the 1970s, and has thereafter received considerable attention, as evidenced by the significant increase of the number of articles and patents in this area. This review article is an attempt to take advantage of the existing literature on the clinically tested and commercialized biodegradable PLA(G)A-PEG nanotechnology as a model to propose quality building and outline translation and development principles for polymeric nano-medicines. We built such an approach from various building blocks including material design, nano-assembly - i.e. physicochemistry of drug/nano-object association in the pharmaceutical process, and release in relevant biological environment - characterization and identification of the quality attributes related to the biopharmaceutical properties. More specifically, as envisaged in a translational approach, the reported data on PLA(G)A-PEG nanotechnology have been structured into packages to evidence the links between the structure, physicochemical properties, and the in vitro and in vivo performances of the nanoparticles. The integration of these bodies of knowledge to build the CMC (Chemistry Manufacturing and Controls) quality management strategy and finally support the translation to proof of concept in human, and anticipation of the industrialization takes into account the specific requirements and biopharmaceutical features attached to the administration route. From this approach, some gaps are identified for the industrial development of such nanotechnology-based products, and the expected improvements are discussed. The viewpoint provided in this article is expected to shed light on design, translation and pharmaceutical development to realize their full potential for future clinical applications.
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127
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Amarasekara AS, Hasan MA. Vanillin based polymers: III. Electrochemical dimerization of vanillin revisited and synthesis of hydrovanilloin–formaldehyde polymer. POLYMER SCIENCE SERIES B 2016. [DOI: 10.1134/s1560090416030015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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128
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Shashkova VT, Matveeva IA, Glagolev NN, Zarkhina TS, Timashev PS, Bagratashvili VN, Solov’eva AB. Selective modification of polylactide by introducing acrylate groups: IR spectroscopy, gel permeation chromatography, and differential thermal analysis. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s0036024416100241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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129
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dos Santos FA, Valle Iulianelli GC, Bruno Tavares MI. Development and properties evaluation of bio-based PLA/PLGA blend films reinforced with microcrystalline cellulose and organophilic silica. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24447] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fernanda Abbate dos Santos
- Instituto de Macromoléculas Professora Eloisa Mano-Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
- Centro de Tecnologia Bloco J-Cidade Universitária Ilha do Fundão; Rio de Janeiro RJ CEP 21945-970, CP 68525 Brazil
| | - Gisele Cristina Valle Iulianelli
- Instituto de Macromoléculas Professora Eloisa Mano-Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
- Centro de Tecnologia Bloco J-Cidade Universitária Ilha do Fundão; Rio de Janeiro RJ CEP 21945-970, CP 68525 Brazil
| | - Maria Inês Bruno Tavares
- Instituto de Macromoléculas Professora Eloisa Mano-Universidade Federal do Rio de Janeiro; Rio de Janeiro RJ Brazil
- Centro de Tecnologia Bloco J-Cidade Universitária Ilha do Fundão; Rio de Janeiro RJ CEP 21945-970, CP 68525 Brazil
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130
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Fully bio-renewable multiblocks copolymers of poly(lactide) and commercial fatty acid-based polyesters polyols: Synthesis and characterization. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.06.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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131
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Tajima K, Han X, Hashimoto Y, Satoh Y, Satoh T, Taguchi S. In vitro synthesis of polyhydroxyalkanoates using thermostable acetyl-CoA synthetase, CoA transferase, and PHA synthase from thermotorelant bacteria. J Biosci Bioeng 2016; 122:660-665. [PMID: 27342638 DOI: 10.1016/j.jbiosc.2016.06.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 05/23/2016] [Accepted: 06/02/2016] [Indexed: 10/21/2022]
Abstract
Thermostable enzymes are required for the rapid and sustainable production of polyhydroxyalkanoate (PHA) in vitro. The in vitro synthesis of PHA using the engineered thermostable synthase PhaC1SG(STQK) has been reported; however, the non-thermostable enzymes acetyl-CoA synthetase (ACS) and CoA transferase (CT) from mesophilic strains were used as monomer-supplying enzymes in this system. In the present study, acs and ct were cloned from the thermophilic bacteria Pelotomaculum thermopropionicum JCM10971 and Thermus thermophilus JCM10941 to construct an in vitro PHA synthesis system using only thermostable enzymes. ACS from P. thermopropionicum (ACSPt) and CT from T. thermophilus (CTTt) were confirmed to have high thermostability, and their optimal temperatures were around 60°C and 75°C, respectively. The in vitro PHA synthesis was successfully performed by ACSPt, CTTt, PhaC1SG(STQK), and poly(3-hydroxybutyrate) [P(3HB)] was synthesized at 45°C. Furthermore, the yields of P(3HB) and P(lactate-co-3HB) at 37°C were 1.4-fold higher than those of the in vitro synthesis system with non-thermostable ACS and CT from mesophilic strains. Overall, the thermostable ACS and CT were demonstrated to be useful for the efficient in vitro PHA synthesis at relatively high temperatures.
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Affiliation(s)
- Kenji Tajima
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan.
| | - Xuerong Han
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan
| | - Yoshiki Hashimoto
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan
| | - Yasuharu Satoh
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan
| | - Toshifumi Satoh
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan
| | - Seiichi Taguchi
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo 060-8628, Japan; CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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132
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Bian X, Zhang B, Sun B, Sun Z, Xiang S, Li G, Chen X. Preparation of high toughness and high transparency polylactide blends resin based on multiarmed polycaprolactone-block-poly(l-lactide). POLYM ENG SCI 2016. [DOI: 10.1002/pen.24345] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xinchao Bian
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Bao Zhang
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Bin Sun
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Zhiqiang Sun
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Sheng Xiang
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Gao Li
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
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133
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Synthesis, characterization and l -lactide polymerization behavior of rare-earth metal bis(silylamide) complexes supported by arylamido ligand. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.02.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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134
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Hu X, Shen X, Huang M, Liu C, Geng Y, Wang R, Xu R, Qiao H, Zhang L. Biodegradable unsaturated polyesters containing2,3-butanediol for engineering applications: Synthesis, characterization and performances. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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135
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Tsuge Y, Kawaguchi H, Sasaki K, Kondo A. Engineering cell factories for producing building block chemicals for bio-polymer synthesis. Microb Cell Fact 2016; 15:19. [PMID: 26794242 PMCID: PMC4722748 DOI: 10.1186/s12934-016-0411-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Accepted: 01/05/2016] [Indexed: 02/03/2023] Open
Abstract
Synthetic polymers are widely used in daily life. Due to increasing environmental concerns related to global warming and the depletion of oil reserves, the development of microbial-based fermentation processes for the production of polymer building block chemicals from renewable resources is desirable to replace current petroleum-based methods. To this end, strains that efficiently produce the target chemicals at high yields and productivity are needed. Recent advances in metabolic engineering have enabled the biosynthesis of polymer compounds at high yield and productivities by governing the carbon flux towards the target chemicals. Using these methods, microbial strains have been engineered to produce monomer chemicals for replacing traditional petroleum-derived aliphatic polymers. These developments also raise the possibility of microbial production of aromatic chemicals for synthesizing high-performance polymers with desirable properties, such as ultraviolet absorbance, high thermal resistance, and mechanical strength. In the present review, we summarize recent progress in metabolic engineering approaches to optimize microbial strains for producing building blocks to synthesize aliphatic and high-performance aromatic polymers.
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Affiliation(s)
- Yota Tsuge
- Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.
| | - Hideo Kawaguchi
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.
| | - Kengo Sasaki
- Organization of Advanced Science and Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.
| | - Akihiko Kondo
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan. .,Biomass Engineering Program, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan.
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136
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Chen H, Yang X, Chen L, Wang Y, Sun Y. Application of FDM three-dimensional printing technology in the digital manufacture of custom edentulous mandible trays. Sci Rep 2016; 6:19207. [PMID: 26763620 PMCID: PMC4725876 DOI: 10.1038/srep19207] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 12/08/2015] [Indexed: 11/24/2022] Open
Abstract
The objective was to establish and evaluate a method for manufacture of custom trays for edentulous jaws using computer aided design and fused deposition modeling (FDM) technologies. A digital method for design the custom trays for edentulous jaws was established. The tissue surface data of ten standard mandibular edentulous plaster models, which was used to design the digital custom tray in a reverse engineering software, were obtained using a 3D scanner. The designed tray was printed by a 3D FDM printing device. Another ten hand-made custom trays were produced as control. The 3-dimentional surface data of models and custom trays was scanned to evaluate the accuracy of reserved impression space, while the difference between digitally made trays and hand-made trays were analyzed. The digitally made custom trays achieved a good matching with the mandibular model, showing higher accuracy than the hand-made ones. There was no significant difference of the reserved space between different models and its matched digitally made trays. With 3D scanning, CAD and FDM technology, an efficient method of custom tray production was established, which achieved a high reproducibility and accuracy.
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Affiliation(s)
- Hu Chen
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health
| | - Xu Yang
- Teaching and Research department of Prosthodontics, Peking University School and Hospital of Stomatology
| | - Litong Chen
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health
| | - Yong Wang
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health
| | - Yuchun Sun
- Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology &National Engineering Laboratory for Digital and Material Technology of Stomatology &Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health
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137
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Cheng CC, Liao HW, Chen JK, Lee DJ, Xin Z. New transparent poly(l-lactide acid) films as high-performance bio-based nanocomposites. RSC Adv 2016. [DOI: 10.1039/c6ra03937e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new tri-POSS-end-capped poly(lactic acid) bio-nanocomposite forms transparent films with significantly enhanced gas barrier properties and improved mechanical performance.
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Affiliation(s)
- Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Hao-Wen Liao
- R&D Center
- Far Eastern New Century Corporation
- Chungli
- Taiwan
| | - Jem-Kun Chen
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei 10607
- Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
- Department of Chemical Engineering
| | - Zhong Xin
- State Key Laboratory of Chemical Engineering
- School of Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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138
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Zhang B, Bian X, Zhou D, Feng L, Li G, Chen X. Toughening modification of PLLA by combination of copolymerization and in situ reactive blending. RSC Adv 2016. [DOI: 10.1039/c6ra23267a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PLLA/PLLA-b-PBAT-b-PLLA/(PLLA-b-PGMA)3 blends with different ratio.
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Affiliation(s)
- Bao Zhang
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Xinchao Bian
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Dongdong Zhou
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Lidong Feng
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Gao Li
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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139
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Shao J, Guo Y, Xiang S, Zhou D, Bian X, Sun J, Li G, Hou H. The morphology and spherulite growth of PLA stereocomplex in linear and branched PLLA/PDLA blends: effects of molecular weight and structure. CrystEngComm 2016. [DOI: 10.1039/c5ce02017d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the linear and three armed PLLA/PDLA blends, the G value increased firstly, then decreased as Mn,PLA increased, and G reduced as three armed PLAs added.
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Affiliation(s)
- Jun Shao
- College of Chemistry and Chemical Engineering
- JiangXi Normal University
- Nanchang 330022, China
| | - Yanmei Guo
- College of Chemistry and Chemical Engineering
- JiangXi Normal University
- Nanchang 330022, China
| | - Sheng Xiang
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Dongdong Zhou
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Xinchao Bian
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Jingru Sun
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Gao Li
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Haoqing Hou
- College of Chemistry and Chemical Engineering
- JiangXi Normal University
- Nanchang 330022, China
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140
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Wang WW, Jiang L, Ren WY, Zhang CM, Man CZ, Nguyen TP, Dan Y. The crystallinity, thermal properties and microscopic morphology of di-block copolymers of l-lactide and several acrylates. RSC Adv 2016. [DOI: 10.1039/c5ra24327k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Di-block copolymers of l-lactide and (meth)acrylate were synthesized from PLLA macroinitiators, and the microphase separation of copolymers was observed.
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Affiliation(s)
- Wei-Wei Wang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- P. R. China
- Institut des Matériaux Jean Rouxel
| | - Long Jiang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- P. R. China
| | - Wu-Yang Ren
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- P. R. China
| | - Chun-Mei Zhang
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- P. R. China
| | - Chang-Zhen Man
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- P. R. China
| | | | - Yi Dan
- State Key Laboratory of Polymer Materials Engineering of China
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- P. R. China
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141
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Chiu FC, Hsieh YC, Sung YC, Liang NY. Poly(butylene succinate-co-adipate) Green Composites with Enhanced Rigidity: Influences of Dimension and Surface Modification of Kenaf Fiber Reinforcement. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b03384] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fang-Chyou Chiu
- Department
of Chemical and Materials Engineering, Chang Gung University, Tao-Yuan 333, Taiwan, ROC
| | - Yu-Chi Hsieh
- Department
of Chemical and Materials Engineering, Chang Gung University, Tao-Yuan 333, Taiwan, ROC
| | - Yi-Ching Sung
- Polymer
Materials Section, Taiwan Textile Research Institute, New Taipei City 236, Taiwan, ROC
| | - Nai-Yun Liang
- Polymer
Materials Section, Taiwan Textile Research Institute, New Taipei City 236, Taiwan, ROC
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142
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Fabrication of Poly-l-lactic Acid/Dicalcium Phosphate Dihydrate Composite Scaffolds with High Mechanical Strength-Implications for Bone Tissue Engineering. J Funct Biomater 2015; 6:1036-53. [PMID: 26556380 PMCID: PMC4695909 DOI: 10.3390/jfb6041036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 10/28/2015] [Accepted: 11/02/2015] [Indexed: 11/17/2022] Open
Abstract
Scaffolds were fabricated from poly-l-lactic acid (PLLA)/dicalcium phosphate dihydrate (DCPD) composite by indirect casting. Sodium citrate and PLLA were used to improve the mechanical properties of the DCPD scaffolds. The resulting PLLA/DCPD composite scaffold had increased diametral tensile strength and fracture energy when compared to DCPD only scaffolds (1.05 vs. 2.70 MPa and 2.53 vs. 12.67 N-mm, respectively). Sodium citrate alone accelerated the degradation rate by 1.5 times independent of PLLA. Cytocompatibility of all samples were evaluated using proliferation and differentiation parameters of dog-bone marrow stromal cells (dog-BMSCs). The results showed that viable dog-BMSCs attached well on both DCPD and PLLA/DCPD composite surfaces. In both DCPD and PLLA/DCPD conditioned medium, dog-BMSCs proliferated well and expressed alkaline phosphatase (ALP) activity indicating cell differentiation. These findings indicate that incorporating both sodium citrate and PLLA could effectively improve mechanical strength and biocompatibility without increasing the degradation time of calcium phosphate cement scaffolds for bone tissue engineering purposes.
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143
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The stereocomplex formation and phase separation of PLLA/PDLA blends with different optical purities and molecular weights. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1715-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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144
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Effect of incorporated star-shaped four-armed stereo diblock poly(lactide) on the crystallization behavior of linear one-armed poly(l-lactide) or poly(d-lactide). Polym J 2015. [DOI: 10.1038/pj.2015.92] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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145
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Tolpygin AO, Cherkasov AV, Fukin GK, Trifonov AA. Yttrium and ytterbium(III) complexes with ansa-linked bis(amidinate) ligand containing conformationally rigid o-phenylene bridge. Russ Chem Bull 2015. [DOI: 10.1007/s11172-014-0738-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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146
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Takemura K, Ajiro H, Fujiwara T, Akashi M. A novel substrate for testosterone: biodegradable and biocompatible oil gel. Polym J 2015. [DOI: 10.1038/pj.2015.17] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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147
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Zhou D, Shao J, Li G, Sun J, Bian X, Chen X. Crystallization behavior of PEG/PLLA block copolymers: Effect of the different architectures and molecular weights. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.02.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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148
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Shao J, Xiang S, Bian X, Sun J, Li G, Chen X. Remarkable Melting Behavior of PLA Stereocomplex in Linear PLLA/PDLA Blends. Ind Eng Chem Res 2015. [DOI: 10.1021/ie504484b] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jun Shao
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- College
of Chemistry and Chemical Engineering, JiangXi Normal University, Nanchang 330022, China
| | - Sheng Xiang
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xinchao Bian
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jingru Sun
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Gao Li
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuesi Chen
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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149
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Ding P, Kang B, Zhang J, Yang J, Song N, Tang S, Shi L. Phosphorus-containing flame retardant modified layered double hydroxides and their applications on polylactide film with good transparency. J Colloid Interface Sci 2015; 440:46-52. [DOI: 10.1016/j.jcis.2014.10.048] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/13/2014] [Accepted: 10/17/2014] [Indexed: 11/30/2022]
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Anzai R, Murakami Y. Poly(ɛ-caprolactone) (PCL)-polymeric micelle hybrid sheets for the incorporation and release of hydrophilic proteins. Colloids Surf B Biointerfaces 2015; 127:292-9. [PMID: 25723105 DOI: 10.1016/j.colsurfb.2015.01.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/15/2015] [Accepted: 01/19/2015] [Indexed: 01/11/2023]
Abstract
Sheets have several advantages over conventional gel- or particle-type drug carriers. Sheets have several notable attributes: sheets' size and shape are easily adjustable, sheets are highly accessible in surgery, and sheets have a large contact area relative to drug-targeting sites. However, it is difficult to incorporate hydrophilic proteins into hydrophobic sheets and to release the proteins over the long term in a sustained manner. In the present study, we show that "poly(ɛ-caprolactone) (PCL)-polymeric micelle hybrid sheets" can be used for the incorporation and release of hydrophilic proteins. Polymeric micelles (i.e., spaces that can incorporate hydrophilic compounds) are, in this study, uniformly dispersed in hydrophobic and biocompatible biomaterial sheet. We have clarified that the composition of block copolymer, methoxy-terminated poly(ethylene glycol)-block-poly(ɛ-caprolactone) (CH3O-PEG-b-PCL), can affect two variables: the stability of w/o emulsion and the release properties of the resulting sheets, by means of visual qualitative observations, newly developed quantitative analyses (advanced fractal analysis, advanced FD) based on deviation of the fractal dimension (FD), and release experiments. We clarified that the release behavior of BSA was affected by the composition of the block copolymers and the resulting emulsion. The results obtained in this paper show that the hydrophobic sheets in which polymeric micelles providing hydrophilic spaces were dispersed could be an effective platform for incorporating and releasing hydrophilic proteins.
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Affiliation(s)
- Ryosuke Anzai
- Department of Organic and Polymer Materials Chemistry, Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Yoshihiko Murakami
- Department of Organic and Polymer Materials Chemistry, Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan.
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