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Wang W, Wang B, Tercjak A, Müller AJ, Ma Z, Cavallo D. Origin of Transcrystallinity and Nucleation Kinetics in Polybutene-1/Fiber Composites. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c02038] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Wang
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
| | - Bao Wang
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
| | - Agnieszka Tercjak
- Group ‘Materials + Technologies’ (GMT), Department of Chemical and Environmental Engineering, Faculty of Engineering Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia—San Sebastian, Spain
| | - Alejandro J. Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal, 3, 20018 Donostia—San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Zhe Ma
- Tianjin Key Laboratory of Composite and Functional Materials and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Dario Cavallo
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
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2
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Wang S, Wu R, Zhang J, Leng Y, Li Q. PLA/PEG/MWCNT composites with improved processability and mechanical properties. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1811324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Shiwei Wang
- National Center for International Joint Research of Micro-Nano Molding Technology, School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China
| | - Ruguang Wu
- National Center for International Joint Research of Micro-Nano Molding Technology, School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China
| | - Jianming Zhang
- National Center for International Joint Research of Micro-Nano Molding Technology, School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China
| | - Yuting Leng
- College of Chemistry, Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province, Green Catalysis Center, Zhengzhou University, Zhengzhou, China
| | - Qian Li
- National Center for International Joint Research of Micro-Nano Molding Technology, School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China
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3
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Jiang R, Liu T, Xu Z, Park CB, Zhao L. Improving the Continuous Microcellular Extrusion Foaming Ability with Supercritical CO 2 of Thermoplastic Polyether Ester Elastomer through In-Situ Fibrillation of Polytetrafluoroethylene. Polymers (Basel) 2019; 11:E1983. [PMID: 31810168 PMCID: PMC6960977 DOI: 10.3390/polym11121983] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 11/16/2022] Open
Abstract
In-situ fibrillated polytetrafluoroethylene (PTFE) enhanced nanocomposites were successfully prepared by mixing thermoplastic polyether ester elastomer (TPEE) and PTFE using a twin-screw extruder. Well-dispersed, long aspect ratio PTFE nanofibrils with a diameter of less than 200 nm were generated and interwoven into networks. Differential scanning calorimetry and in-situ polarized optical microscopy showed that the PTFE nanofibrils can greatly accelerate and promote crystallization of the TPEE matrix and the crystallization temperature can be increased by 6 °C. Both shearing and elongational rheometry results confirmed that the introduction of PTFE nanofibrils can significantly improve the rheological properties. The remarkable changes in the strain-hardening effect and the melt viscoelastic response, as well as the promoted crystallization, led to substantially improved foaming behavior in the continuous extrusion process using supercritical CO2 as the blowing agent. The existing PTFE nanofibrils dramatically decreased the cell diameter and increased cell density, together with a higher expansion ratio and more uniform cell structure. The sample with 5% PTFE fibrils showed the best foaming ability, with an average diameter of 10.4-14.7 μm, an expansion ratio of 9.5-12.3 and a cell density of 6.6 × 107-8.6 × 107 cells/cm3.
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Affiliation(s)
- Rui Jiang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (R.J.); (T.L.); (Z.X.)
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada;
| | - Tao Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (R.J.); (T.L.); (Z.X.)
| | - Zhimei Xu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (R.J.); (T.L.); (Z.X.)
| | - Chul B. Park
- Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada;
| | - Ling Zhao
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; (R.J.); (T.L.); (Z.X.)
- College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
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4
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Wang B, Wen T, Zhang X, Tercjak A, Dong X, Müller AJ, Wang D, Cavallo D. Nucleation of Poly(lactide) on the Surface of Different Fibers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01078] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Bao Wang
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
| | - Tao Wen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, China
| | - Xiuqin Zhang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, School of Materials Science & Engineering, Beijing Institute of Fashion Technology, 100029 Beijing, China
| | - Agnieszka Tercjak
- Group ‘Materials + Technologies’ (GMT), Department of Chemical and Environmental Engineering, Faculty of Engineering Gipuzkoa, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia—San Sebastian, Spain
| | - Xia Dong
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, China
| | - Alejandro J. Müller
- POLYMAT and Polymer Science and Technology Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia—San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, China
| | - Dario Cavallo
- Department of Chemistry and Industrial Chemistry, University of Genoa, Via Dodecaneso 31, 16146 Genova, Italy
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5
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Zhang J, He L, Wei G, Jiang X, Fu L, Zhao Y, Zhang L, Yang L, Li Y, Wang Y, Mo H, Shen J. Zwitterionic Polymer-Grafted Polylactic Acid Vascular Patches Based on a Decellularized Scaffold for Tissue Engineering. ACS Biomater Sci Eng 2019; 5:4366-4375. [PMID: 33438402 DOI: 10.1021/acsbiomaterials.9b00684] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
More than 10 million people suffer from cardiovascular diseases, and diseased blood vessels need to be treated with vascular patches. For a vascular patch, good affinity for endothelial progenitor cells is a key factor in promoting the formation of endothelial tissue-endothelialization. To construct such a vascular patch with good cell affnity, in this work, we first synthesized a reactive zwitterionic organophosphate containing a phosphorylcholine headgroup: 6-(acryloyloxy)hexyl-2-(N-isopropyl-N,N-dimethylammonio)ethyl phosphate (AHEP). We then grafted AHEP onto a polylactic acid (PLA)-coated decellularized scaffold to obtain a vascular patch. Its hydrophilicity and biocompatibility were investigated. Its in vivo performance was also examined in a pig model with B-ultrasonography, Doppler spectra, and computed tomography angiography. The vascular patch demonstrated a nonhemolytic property, noncytotoxicity, long in vitro coagulation times, the strong ability to resist platelet adhesion, and a good affinity for endothelial progenitor cells. The vascular patch was able to maintain the long-term patency (5 months) of surgical arteries. Hence, the zwitterionic polymer-grafted PLA vascular patch may be a promising candidate for vascular tissue engineering.
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Affiliation(s)
- Jun Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Lei He
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Guo Wei
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Xuefeng Jiang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Lei Fu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Yue Zhao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Luxia Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Lutao Yang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Yajuan Li
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Yutong Wang
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road #159, Xuanwu District, Nanjing 210037, Jiangsu Province, China
| | - Hong Mo
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Wenyuan Road #1, Xianlin University Town, Qixia District, Nanjing 210023, Jiangsu Province, China
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