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Sakhavi M, Sofla RLM, Rezaei M, Miralvar MR. Synthesis of chemically-crosslinked multi-arm star-shaped polyurethane with triple-shape memory effect. J Mech Behav Biomed Mater 2023; 141:105793. [PMID: 36989870 DOI: 10.1016/j.jmbbm.2023.105793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/29/2023]
Abstract
In this study, chemically-crosslinked multi-arm star-shaped polyurethanes (SPUs) were prepared using three, four, and six-arm polycaprolactone, hexamethylene diisocyanate, and 1, 4-butanediol. The hydrogen bonding indices of soft and hard segments were calculated using Fourier transform infrared spectra. The results indicated that the phase separation among hard and soft segments increased with the increment of PCL arm numbers. Moreover, the results of X-ray diffraction and differential scanning calorimetry showed that the crystallization ability of the three and four-arm SPUs were lower than that for six-arm SPU (6SPU), which is due to their higher crosslinking densities. In addition, the results of the mechanical studies showed that the crosslinking density and degree of crystallinity are the main effective parameters controlling the mechanical properties, by which 6SPU showed higher Young's modulus and lower elongation at break compared to other SPUs. Cyclic shape memory studies showed that 6SPU could fix approximately all the temporary shapes during three cycles and recover 100% of its original shape. Moreover, 6SPU could show triple-shape memory effect (TSME) by which it could fix two different temporary shapes. These results show that 6SPU has a high potential for practical applications due to its good mechanical properties, shape memory fatigue resistance, and TSME.
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Affiliation(s)
- Mahdi Sakhavi
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - Reza Lotfi Mayan Sofla
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran.
| | - Mostafa Rezaei
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - Mohammad Reza Miralvar
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran; Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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2
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Mehrbakhsh E, Rezaei M, Lotfi Mayan Sofla R, Babaie A. Physical and thermo-mechanical properties of PCL/PEG based shape memory polyurethane for orthodontic ligature application. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2155157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Elaheh Mehrbakhsh
- Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Tabriz, Iran
| | - Mostafa Rezaei
- Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Tabriz, Iran
| | - Reza Lotfi Mayan Sofla
- Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Tabriz, Iran
| | - Amin Babaie
- Institute of Polymeric Materials, Polymer Engineering Department, Sahand University of Technology, Tabriz, Iran
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3
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Du J, Zhang Y, Wang J, Xu M, Qin M, Zhang X, Huang D. Highly resilient porous polyurethane composite scaffolds filled with whitlockite for bone tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE, POLYMER EDITION 2022; 34:845-859. [PMID: 36346014 DOI: 10.1080/09205063.2022.2145871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The present work is intended to provide a base for further investigation of the composite scaffolds for bone tissue engineering, and whitlockite/polyurethane (WH/PU) scaffolds, in particular. WH Ca18Mg2(HPO4)2(PO4)12 was successfully prepared by means of a chemical reaction between Ca(OH)2, Mg(OH)2 and H3PO4. WH/PU scaffolds were synthesized via in situ polymerization. Synthesized WH particles and WH/PU composite scaffolds were characterized using FTIR, XRD, SEM and EDS. The porosity of scaffolds was calculated by the liquid displacement method. The water contact angle of scaffolds was tested. Mechanical characterization of WH/PU composite scaffolds was evaluated according to monotonic and cyclic compression examination. MC3T3-E1 cells were employed to evaluate the cytocompatibility of scaffolds. The results showed that WH and PU were completely integrated into composite biomaterials. The maximum compressive strength and elastic modulus of WH/PU composite scaffold reached up to 5.2 and 14.1 MPa, respectively. WH/PU composite scaffold had maximum 73% porosity. The minimum contact angle of WH/PU composite scaffold was 89.16°. WH/PU composite scaffolds have a good elasticity. Cyclic compression tests showed that scaffold could recover 90% of its original shape 1 h after removing the load. WH/PU composite scaffolds exhibited a high affinity to MC3T3-E1 cells. WH/PU composite scaffolds significantly promoted proliferation and alkaline phosphatase activity of MC3T3-E1 cells when compared to those grown on tissue culture well plates. It is suggested that the WH/PU scaffolds might be suitable for the application of bone tissue engineering.
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Affiliation(s)
- Jingjing Du
- Analytical & Testing Center, Hainan University, Haikou 570228, P. R. China
| | - Yang Zhang
- Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Jiaqi Wang
- Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Mengjie Xu
- Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Miao Qin
- Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Xiumei Zhang
- Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Di Huang
- Department of Biomedical Engineering, College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
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He S, Hu S, Wu Y, Jin R, Niu Z, Wang R, Xue J, Wu S, Zhao X, Zhang L. Polyurethanes Based on Polylactic Acid for 3D Printing and Shape-Memory Applications. Biomacromolecules 2022; 23:4192-4202. [PMID: 36073828 DOI: 10.1021/acs.biomac.2c00662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polylactic acid (PLA) has received increased attention in the development of shape-memory polymers and biomedical materials owing to its excellent physical properties and good biocompatibility and biodegradability. However, the inherent brittleness and high shape-recovery temperature of this material limit its application in the human body. Herein, we fabricated a PLA-based thermoplastic polyurethane (PLA-TPU) prepared from modified PLA-diol, dicyclohexylmethane-4,4'-diisocyanate, and 1,4-butanediol to solve the limitations of pure PLA. The glass transition temperature (Tg) of the designed TPU can be tailored from 6 to 40.5 °C by adjusting the content of hard segments or molecular weight of soft segments. The shape of the designed TPU can be fixed at room temperature and recovered at temperatures above 37 °C. Moreover, the prepared PLA-TPUs exhibited recyclability, three-dimensional printing capability, non-cytotoxicity, blood compatibility, and biodegradability. The shape of PLA-TPU/nano-Fe3O4 composites can be recovered by exposure to near-infrared light. These results collectively indicate that PLA-TPUs and their composites may have potential applications as intelligent flexible medical scaffolds for surgical and medical implantation equipment.
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Affiliation(s)
- Shaoyun He
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shikai Hu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China.,Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China.,Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Ministry of Education, Beijing 100029, China
| | - Yaowen Wu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ruiheng Jin
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhihao Niu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Runguo Wang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China.,Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China.,Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Ministry of Education, Beijing 100029, China
| | - Jiajia Xue
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China.,Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China.,Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Ministry of Education, Beijing 100029, China
| | - Sizhu Wu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China.,Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China.,Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Ministry of Education, Beijing 100029, China
| | - Xiuying Zhao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China.,Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China.,Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Ministry of Education, Beijing 100029, China
| | - Liqun Zhang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China.,Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing 100029, China.,Engineering Research Center of Elastomer Materials on Energy Conservation and Resources, Ministry of Education, Beijing 100029, China
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5
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Babaie A, Rezaei M, Razzaghi D, Roghani‐Mamaqani H. Synthesis of
dual‐stimuli‐responsive
polyurethane shape memory nanocomposites incorporating
isocyanate‐functionalized Fe
3
O
4
nanoparticles. J Appl Polym Sci 2022. [DOI: 10.1002/app.52790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Amin Babaie
- Institute of Polymeric Materials Sahand University of Technology Tabriz Iran
- Faculty of Polymer Engineering Sahand University of Technology Tabriz Iran
| | - Mostafa Rezaei
- Institute of Polymeric Materials Sahand University of Technology Tabriz Iran
- Faculty of Polymer Engineering Sahand University of Technology Tabriz Iran
| | - Donya Razzaghi
- Institute of Polymeric Materials Sahand University of Technology Tabriz Iran
- Faculty of Polymer Engineering Sahand University of Technology Tabriz Iran
| | - Hossein Roghani‐Mamaqani
- Institute of Polymeric Materials Sahand University of Technology Tabriz Iran
- Faculty of Polymer Engineering Sahand University of Technology Tabriz Iran
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González-Jiménez A, Bernal-Ortega P, Salamanca FM, Valentin JL. Shape-Memory Composites Based on Ionic Elastomers. Polymers (Basel) 2022; 14:polym14061230. [PMID: 35335560 PMCID: PMC8953204 DOI: 10.3390/polym14061230] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 01/27/2023] Open
Abstract
Shape-memory polymers tend to present rigid behavior at ambient temperature, being unable to deform in this state. To obtain soft shape-memory elastomers, composites based on a commercial rubber crosslinked by both ionic and covalent bonds were developed, as these materials do not lose their elastomeric behavior below their transition (or activation) temperature (using ionic transition for such a purpose). The introduction of fillers, such as carbon black and multiwalled carbon nanotubes (MWCNTs), was studied and compared with the unfilled matrix. By adding contents above 10 phr of MWCNT, shape-memory properties were enhanced by 10%, achieving fixing and recovery ratios above 90% and a faster response. Moreover, by adding these fillers, the conductivity of the materials increased from ~10−11 to ~10−4 S·cm−1, allowing the possibility to activate the shape-memory effect with an electric current, based on the heating of the material by the Joule effect, achieving a fast and clean stimulus requiring only a current source of 50 V.
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Affiliation(s)
- Antonio González-Jiménez
- Materials Science and Engineering Area, Rey Juan Carlos University, C/Tulipán s/n, Móstoles, 28933 Madrid, Spain
- Correspondence: (A.G.-J.); (J.L.V.); Tel.: +34-912587539 (J.L.V.)
| | - Pilar Bernal-Ortega
- Department of Elastomer Technology and Engineering, University of Twente, Driener-Iolaan 5, 7522 NB Enschede, The Netherlands;
| | - Fernando M. Salamanca
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
| | - Juan L. Valentin
- Instituto de Ciencia y Tecnología de Polímeros (CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain;
- Correspondence: (A.G.-J.); (J.L.V.); Tel.: +34-912587539 (J.L.V.)
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7
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Shape memory elastomers: A review of synthesis, design, advanced manufacturing, and emerging applications. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5652] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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8
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Lashkari R, Tabatabaei-Nezhad SA, Husein MM. Shape memory polyurethane as a wellbore strengthening material. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2021.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Brzeska J, Tercjak A, Sikorska W, Mendrek B, Kowalczuk M, Rutkowska M. Degradability of Polyurethanes and Their Blends with Polylactide, Chitosan and Starch. Polymers (Basel) 2021; 13:polym13081202. [PMID: 33917712 PMCID: PMC8068122 DOI: 10.3390/polym13081202] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 01/12/2023] Open
Abstract
One of the methods of making traditional polymers more environmentally friendly is to modify them with natural materials or their biodegradable, synthetic equivalents. It was assumed that blends with polylactide (PLA), polysaccharides: chitosan (Ch) and starch (St) of branched polyurethane (PUR) based on synthetic poly([R,S]-3-hydroxybutyrate) (R,S-PHB) would degrade faster in the processes of hydrolysis and oxidation than pure PUR. For the sake of simplicity in the publication, all three modifiers: commercial PLA, Ch created by chemical modification of chitin and St are called bioadditives. The samples were incubated in a hydrolytic and oxidizing environment for 36 weeks and 11 weeks, respectively. The degradation process was assessed by observation of the chemical structure as well as the change in the mass of the samples, their molecular weight, surface morphology and thermal properties. It was found that the PUR samples with the highest amount of R,S-PHB and the lowest amount of polycaprolactone triol (PCLtriol) were degraded the most. Moreover, blending with St had the greatest impact on the susceptibility to degradation of PUR. However, the rate of weight loss of the samples was low, and after 36 weeks of incubation in the hydrolytic solution, it did not exceed 7% by weight. The weight loss of Ch and PLA blends was even smaller. However, a significant reduction in molecular weight, changes in morphology and changes in thermal properties indicated that the degradation of the samples should occur quickly after this time. Therefore, when using these polyurethanes and their blends, it should be taken into account that they should decompose slowly in their initial life. In summary, this process can be modified by changing the amount of R,S-PHB, the degree of cross-linking, and the type and amount of second blend component added (bioadditives).
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Affiliation(s)
- Joanna Brzeska
- Department of Industrial Product Quality and Chemistry, Gdynia Maritime University, 83 Morska Street, 81-225 Gdynia, Poland;
- Correspondence:
| | - Agnieszka Tercjak
- Group ‘Materials+Technologies’ (GMT), Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia-San Sebastián, Spain;
| | - Wanda Sikorska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41-819 Zabrze, Poland; (W.S.); (B.M.); (M.K.)
| | - Barbara Mendrek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41-819 Zabrze, Poland; (W.S.); (B.M.); (M.K.)
| | - Marek Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Sklodowska Street, 41-819 Zabrze, Poland; (W.S.); (B.M.); (M.K.)
| | - Maria Rutkowska
- Department of Industrial Product Quality and Chemistry, Gdynia Maritime University, 83 Morska Street, 81-225 Gdynia, Poland;
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