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Gradinaru LM, Barbalata-Mandru M, Drobota M, Aflori M, Spiridon M, Gradisteanu Pircalabioru G, Bleotu C, Butnaru M, Vlad S. Preparation and Evaluation of Nanofibrous Hydroxypropyl Cellulose and β-Cyclodextrin Polyurethane Composite Mats. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E754. [PMID: 32326486 PMCID: PMC7221721 DOI: 10.3390/nano10040754] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/04/2020] [Accepted: 04/13/2020] [Indexed: 02/02/2023]
Abstract
A series of nanofibrous composite mats based on polyurethane urea siloxane (PUUS), hydroxypropyl cellulose (HPC) and β-cyclodextrin (β-CD) was prepared using electrospinning technique. PUUS was synthesized by two steps solution polymerization procedure from polytetramethylene ether glycol (PTMEG), dimethylol propionic acid (DMPA), 4,4'-diphenylmethane diisocyanate (MDI) and 1,3-bis-(3-aminopropyl) tetramethyldisiloxane (BATD) as chain extender. Then, the composites were prepared by blending PUUS with HPC or βCD in a ratio of 9:1 (w/w), in 15% dimethylformamide (DMF). The PUUS and PUUS based composite solutions were used for preparation of nanofibrous mats. In order to identify the potential applications, different techniques were used to evaluate the chemical structure (Fourier transform infrared-attenuated total reflectance spectroscopy-FTIR-ATR), morphological structure (Scanning electron microscopy-SEM and Atomic force microscopy-AFM), surface properties (contact angle, dynamic vapors sorption-DVS), mechanical characteristics (tensile tests), thermal (differential scanning calorimetry-DSC) and some preliminary tests for biocompatibility and microbial adhesion.
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Affiliation(s)
- Luiza Madalina Gradinaru
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Mihaela Barbalata-Mandru
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Mioara Drobota
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Magdalena Aflori
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Maria Spiridon
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | | | - Coralia Bleotu
- Sanimed International Impex S.R.L, 70F Bucuresti—Măgurele, 051434 Bucuresti, Romania; (G.G.P.); (C.B.)
- “Stefan S Nicolau” Institute of Virology, 285 Mihai Bravu, 030304 Bucuresti, Romania
| | - Maria Butnaru
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
- Faculty of Medical Bioengineering, “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Stelian Vlad
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
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Li Q, Li L, Yu M, Zheng M, Li Y, Yang J, Dai M, Zhong L, Sun L, Lu D. Elastomeric polyurethane porous film functionalized with gastrodin for peripheral nerve regeneration. J Biomed Mater Res A 2020; 108:1713-1725. [PMID: 32196902 DOI: 10.1002/jbm.a.36937] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Qing Li
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Limei Li
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Mali Yu
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Meng Zheng
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
| | - Yao Li
- Department of StomatologyThe First People's Hospital of Yunnan Provience Kunming China
| | - Jian Yang
- Department of Biomedical EngineeringMaterials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University University Park Pennsylvania USA
| | - Min Dai
- Department of Second CardiologyThe Third People's Hospital of Kunming Kunming China
| | - Lianmei Zhong
- Department of NeurologyThe First Affiliated Hospital, Kunming Medical University Kunming China
| | - Lin Sun
- Department of CardiologyThe Second Affiliated Hospital, Kunming Medical University Kunming China
| | - Di Lu
- Science and Technology Achievement Incubation CenterKunming Medical University Kunming China
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Zhang Y, Li Y, Wang H, Zhang Z, Feng Y, Tian Q, Li N, Mei J, Su J, Tian H. Measuring the Microphase Separation Scale of Polyurethanes with a Vibration-Induced Emission-Based Ratiometric "Fluorescent Ruler". ACS APPLIED MATERIALS & INTERFACES 2019; 11:39351-39358. [PMID: 31602978 DOI: 10.1021/acsami.9b13193] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polyurethanes (PUs) are a very attractive type of segmented polymer with unique mechanical properties derived from thermodynamic incompatibility between flexible soft segments and hard segments. The performance of PUs is closely related to their microphase separation structures, in which the hard domains serve as physical cross-linking points in the soft matrix. Studying the microphase separation of PUs in a facile manner is thus of great significance but challenging due to the complexity of the internal structures of PUs. N,N'-disubstituted-dihydrophenazine (DPAC) derivatives, the typical molecules featured with vibration-induced emission (VIE) attribute, can emit fluorescence varying with surrounding environment. In this proof-of-concept work, a series of DPAC derivatives were employed as built-in ratiometric "fluorescent rulers" to measure the degree of microphase separation in PUs modulated by temperature variation. The fluorescence of selected DPAC-doped PU films is dependent on the temperature, providing a theoretical basis for this concept. The feasibility of these fluorescent rulers was further validated by the small-angle X-ray scattering (SAXS) analysis. The SAXS curves show significant change in q range of 0.02 to 0.15 Å-1 with the variation in temperature, showing the changes in the internal microstructure. The polydisperse hard sphere model analysis of the scattering data revealed that the volume fraction of hard spheres has a defined relationship with the fluorescence intensity ratio of orange-red light and blue light, thereby demonstrating a novel fluorimetry method for measuring and monitoring the microphase separation of polyurethanes.
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Affiliation(s)
- Yiyao Zhang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China
| | - Yiru Li
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China
| | - Huan Wang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China
| | - Zhiyun Zhang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China
| | - Yanli Feng
- Polyurethane Lab, Dow Chemical , 936 Zhangheng Road , Shanghai 201203 , P. R. China
| | - Qiang Tian
- State Key Laboratory of Environmentally Friendly Energy Materials , Southwest University of Science and Technology , Mianyang 621010 , P. R. China
| | - Na Li
- National Facility for Protein Science in Shanghai, Zhangjiang Laboratory , No. 333, Haike Road , Shanghai 201204 , P. R. China
| | - Ju Mei
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China
| | - Jianhua Su
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China
| | - He Tian
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering , East China University of Science & Technology , 130 Meilong Road , Shanghai 200237 , P. R. China
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Studying a Flexible Polyurethane Elastomer with Improved Impact-Resistant Performance. Polymers (Basel) 2019; 11:polym11030467. [PMID: 30960451 PMCID: PMC6473829 DOI: 10.3390/polym11030467] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 02/25/2019] [Accepted: 02/28/2019] [Indexed: 01/21/2023] Open
Abstract
A flexible polyurethane elastomer (PUE) is studied, and the improved impact-resistant performance is revealed. Compressive stress–strain curves over a wide loading rate range were derived. Under static loading, the rubbery-like characteristics are demonstrated, which are flexible and hyperelastic, to process a large strain of about 60% followed by full recovery upon unloading. Under high-rate loadingcompared with the mechanical data of polyurethane elastomer (PUE) and polyurea (PUA) materials in the literature. Orderly parallel deformation bands were formed from carrying a large strain. The fibrils were found between deformation bands for enhancing the yield/plateau stress. A considerable plastic zone ahead of propagating crack with numerous crazes and microcracks was produced for realizing the dynamic strain energy absorption. This work presents a scientific innovation for developing outstanding impact-resistant polyurethane elastomers for transparent protection engineering.
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