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Xu Z, Wang G, Zhao J, Zhang A, Zhao G. Super-elastic and structure-tunable poly(ether-block-amide) foams achieved by microcellular foaming. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2021.101807] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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2
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Yang R, Liu W, Wang A, Deng X, Feng Y, Zhang Q, Li Z, Luo F, Li J, Tan H. Shape memory polyurethane potentially used for vascular stents with water-induced stiffening and improved hemocompatibility. J Mater Chem B 2022; 10:8918-8930. [DOI: 10.1039/d2tb01681h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We designed a shape memory polyurethane potentially used for vascular stents with water-induced stiffening in vivo and improved hemocompatibility.
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Affiliation(s)
- Ruibo Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Wenkai Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Ao Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Xiaobo Deng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Yuan Feng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Qiao Zhang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu 610065, China
| | - Zhen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Feng Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Med-X Center for Materials, Sichuan University, Chengdu 610065, China
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Segmented-Block Poly(ether amide)s Containing Flexible Polydisperse Polyethyleneoxide Sequences and Rigid Aromatic Amide Moieties. MATERIALS 2021; 14:ma14112804. [PMID: 34070343 PMCID: PMC8197558 DOI: 10.3390/ma14112804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 11/17/2022]
Abstract
We describe the synthesis and characterization of three novel aromatic diamines containing oxyethylene sequences of different lengths. These diamines were polymerized using the low-temperature solution polycondensation method with isophthaloyl chloride (IPC), terepthaloyl chloride (TPC), [1,1'-biphenyl]-4,4'-dicarbonyl dichloride (BDC), and 4,4'-oxybis(benzoyl chloride) (OBE), obtaining twelve poly(ether amide)s with short segments of polydisperse polyethyleneoxide (PEO) sequences in the polymer backbone. These polymers show reasonably high molecular mass materials (Mw > 12,000), and the relationship between their structure and properties has been carefully studied. Compared with conventional polyamides containing monodisperse PEO sequences, the polydispersity of the PEO segments within the structural units exerts a significant influence on the crystallinity, flexibility, solubility, and the thermal properties of the polymers. For instance, the all-para oriented polyamides (TPCP-A), with an average number of 8.2 ethylenoxide units per structural unit can be transformed conventionally (Tm = 259 °C) in comparison with thermally untransformable polymer with 2 ethylenoxide units (Tm = 425 °C).
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Basak S. Thermoplastic elastomers in biomedical industry – evolution and current trends. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1922086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sayan Basak
- Department of Polymer Science and Technology, University of Calcutta, Kolkata, West Bengal, India
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Liu J, Min B, Wang Z, Teng J, Sun X, Li S, Li S. Influence of functionalized core-shell structure on the thermodynamic and shape memory properties of nanocomposites. NANOSCALE 2020; 12:3205-3219. [PMID: 31967167 DOI: 10.1039/c9nr09029k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Filler/matrix interfacial cohesion exerts a straightforward effect on stress transfer at the interface in composite structures, thereby significantly affecting their integrated mechanical properties. Thus, controlling the interface interaction of polymers/fillers is essential for the fabrication of high-performance polymer composites. In this work, a functionalized core-shell structured hybrid was prepared via charge attraction and applied as a novel filler in the trans-1,4-polyisoprene matrix to improve the interfacial interaction of the filler/matrix. A series of tests on the micro- and macroscale was performed to investigate its thermal, mechanical and shape memory performances. The obtained results show that while guaranteeing the shape memory properties of the composites, the utilization of the core-shell structured hybrid not only improved the heat resistant performance, but also contributed to better mechanical properties. This provides solid evidence for the potential of the innovative method presented herein, which may shed some light on the improvement of the interface design strategy and the development of composites with high performances.
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Affiliation(s)
- Jingbiao Liu
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, P. R. China. and School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
| | - Benzhi Min
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, P. R. China.
| | - Zhenqing Wang
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, P. R. China.
| | - Jianxin Teng
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, P. R. China.
| | - Xiaoyu Sun
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, P. R. China.
| | - Shaofan Li
- Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA.
| | - Shuzhou Li
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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Jiao C, Li M, Chen X, Li S. Flame retardancy and thermal decomposition behavior of TPU/chitosan composites. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chuanmei Jiao
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
| | - Mingxin Li
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
| | - Xilei Chen
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
| | - Shaoxiang Li
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
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