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Preparation, Properties and Water Dissolution Behavior of Polyethylene Oxide Mats Prepared by Solution Blow Spinning. Polymers (Basel) 2022; 14:polym14071299. [PMID: 35406174 PMCID: PMC9003185 DOI: 10.3390/polym14071299] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 02/04/2023] Open
Abstract
The relationship between processing conditions, structure and morphology are key issues to understanding the final properties of materials. For instance, in the case of polymers to be used as scaffolds in tissue engineering, wound dressings and membranes, morphology tuning is essential to control mechanical and wettability behaviors. In this work, the relationship between the processing conditions of the solution blow spinning process (SBS) used to prepare nonwoven mats of polyethylene oxide (PEO), and the structure and morphology of the resulting materials are studied systematically, to account for the thermal and mechanical behaviors and dissolution in water. After finding the optimal SBS processing conditions (air pressure, feed rate, working distance and polymer concentration), the effect of the solvent composition has been considered. The structure and morphology of the blow spun fibers are studied as well as their thermal, mechanical behaviors and dissolution in water. We demonstrate that the morphology of the fibers (size and porosity) changes with the solvent composition, which is reflected in different thermal and mechanical responses and in the dissolution rates of the materials in water.
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Oshiro-Junior JA, Barros RM, da Silva CG, de Souza CC, Scardueli CR, Marcantonio CC, da Silva Saches PR, Mendes L, Cilli EM, Marcantonio RAC, Chiavacci LA. In vivo effectiveness of hybrid membranes with osteogenic growth peptide for bone regeneration. J Tissue Eng Regen Med 2021; 15:722-731. [PMID: 34038031 DOI: 10.1002/term.3226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/09/2021] [Accepted: 05/12/2021] [Indexed: 12/20/2022]
Abstract
Guided bone regeneration (GBR) technique helps to restore bone tissue through cellular selectivity principle. Currently no osteoinductive membrane exists on the market. Osteogenic growth peptide (OGP) acts as a hematopoietic stimulator. This association could improve the quality of bone formation, benefiting more than 2.2 million patients annually. The objective of this work was to develop membranes from ureasil-polyether materials containing OGP. The membranes were characterized by differential scanning calorimetry (DSC) and small angle X-ray scattering (SAXS). OGP was synthesized by the solid phase method. Sterilization results using gamma radiation at 24 kGy did not change the structure of the material, as confirmed by DSC. The SAXS technique revealed the structural homogeneity of the matrix. OGP was incorporated in 66.25 × 10-10 mol and release results showed that the ureasil-PPO400/PEO500 and ureasil-PPO400/PEO1900 membranes released 7% and 21%, respectively, after 48 h. In vivo results demonstrated that the amount and quality of bone tissue formed in the bone defects in the presence of ureasil-polyether membranes with OGP were similar to commercial collagen material with BMP. The results allow us to conclude that membranes with OGP have characteristics that make them potential candidates for the GBR.
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Affiliation(s)
- João Augusto Oshiro-Junior
- Graduation Program in Pharmaceutical Sciences, State University of Paraíba, Bairro Universitário, Campina Grande, Paraíba, Brazil.,Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Rafaela Moreno Barros
- Graduation Program in Pharmaceutical Sciences, State University of Paraíba, Bairro Universitário, Campina Grande, Paraíba, Brazil
| | - Camila Garcia da Silva
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | - Cássio Rocha Scardueli
- Graduation Program in Pharmaceutical Sciences, State University of Paraíba, Bairro Universitário, Campina Grande, Paraíba, Brazil.,Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | - Paulo Ricardo da Silva Saches
- Department of Biochemistry and Chemical Technology, Chemistry Institute, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Larissa Mendes
- Department of Biochemistry and Chemical Technology, Chemistry Institute, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Eduardo Maffud Cilli
- Department of Biochemistry and Chemical Technology, Chemistry Institute, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | - Leila Aparecida Chiavacci
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
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Effect of the CO2-philic ionic liquid [BMIM][Tf2N] on the single and mixed gas transport in PolyActive™ membranes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117813] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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de Jesus NAM, de Oliveira R, Amela-Cortes M, Dumait N, Cordier S, Molard Y, Molina EF. Facile and scalable design of light-emitting and ROS-generating hybrid materials made of polyurea gels embedding a molybdenum cluster-based salt. Dalton Trans 2021; 50:8907-8916. [PMID: 34105549 DOI: 10.1039/d1dt00962a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here, we demonstrate a facile and scalable preparation via sol-gel chemistry of hybrid polyurea gels containing various amounts of a phosphorescent inorganic octahedral molybdenum cluster-based ternary salt, namely Cs2Mo6Br14. The influence of the Cs2Mo6Br14 content (1-10 wt%) on the polyurea matrix and its physical properties are studied in depth by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and X-ray fluorescence microanalysis (μ-XRF). Regardless of the amount of cluster loaded into the polyurea, the integrity of these species was preserved and their dispersion is homogeneous as shown by μ-XRF mapping. Spectroscopic-structural analyses reveal a significant increase of the chain mobility (glass transition temperature Tg) from -65 °C to -55 °C after the incorporation of Cs2Mo6Br14 (DSC analyses). The FTIR studies show that the homogeneity of the dispersion is ensured by supramolecular interactions between the ether-type oxygen atoms of the PEO chains and the cluster compound. Photoluminescence studies show that the metal cluster emission properties are well retained within the host matrix whatever the loaded content. Such a combination of materials demonstrates the feasibility to fabricate a rubber NIR-emitting device. Moreover, the loaded polyurea is also able to produce reactive oxygen species (ROS) upon irradiation in the UV-A region, opening new perspectives as versatile membranes in the field of photodynamic therapy.
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Affiliation(s)
- Natana A M de Jesus
- Universidade de Franca, Av. Dr Armando Salles Oliveira 201, 14404-600 Franca, SP, Brazil.
| | - Ricardo de Oliveira
- Universidade de Franca, Av. Dr Armando Salles Oliveira 201, 14404-600 Franca, SP, Brazil.
| | - Maria Amela-Cortes
- Univ Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes, France.
| | - Noée Dumait
- Univ Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes, France.
| | - Stéphane Cordier
- Univ Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes, France.
| | - Yann Molard
- Univ Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes, France.
| | - Eduardo F Molina
- Universidade de Franca, Av. Dr Armando Salles Oliveira 201, 14404-600 Franca, SP, Brazil.
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Tailoring the Thermal and Mechanical Properties of PolyActive TM Poly(Ether-Ester) Multiblock Copolymers Via Blending with CO 2-Phylic Ionic Liquid. Polymers (Basel) 2020; 12:polym12040890. [PMID: 32290575 PMCID: PMC7240668 DOI: 10.3390/polym12040890] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 04/01/2020] [Accepted: 04/08/2020] [Indexed: 11/21/2022] Open
Abstract
The last decade has seen an exponential increase in the number of studies focused on novel applications for ionic liquids (ILs). Blends of polymers with ILs have been proposed for use in fuel cells, batteries, gas separation membranes, packaging, etc., each requiring a set of specific physico-chemical properties. In this work, blends of four grades of the poly(ether-ester) multiblock copolymer PolyActive™ with different concentrations of the CO2-philic 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [BMIM][Tf2N] were prepared in the form of dense films by a solution casting and solvent evaporation method, in view of their potential use as gas separation membranes for CO2 capture. Depending on the polymer structure, the material properties could be tailored over a wide range by means of the IL content. All samples were dry-feeling, highly elastic self-standing dense films. The microstructure of the blends was studied by scanning electron microscopy with a backscattering detector, able to observe anisotropy in the sample, while a special topographic analysis mode allowed the visualization of surface roughness. Samples with the longest poly(ethylene oxide terephthalate) (PEOT) blocks were significantly more anisotropic than those with shorter blocks, and this heterogeneity increased with increasing IL content. DSC analysis revealed a significant decrease in the melting enthalpy and melting temperature of the crystalline PEOT domains with increasing IL content, forming an amorphous phase with Tg ≈ −50 °C, whereas the polybutylene terephthalate (PBT) phase was hardly affected. This indicates better compatibility of the IL with the polyether phase than the polyester phase. Young’s modulus was highest and most IL-dependent for the sample with the highest PEOT content and PEOT block length, due to its high crystallinity. Similarly, the sample with short PEOT blocks and high PBT content also showed a high modulus and tensile strength, but much lower maximum elongation. This study provides a detailed discussion on the correlation between the morphological, thermal, and mechanical properties of these PolyActive™/[BMIM][Tf2N] blends.
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Wright T, Petel Y, Zellman CO, Sauvé ER, Hudson ZM, Michal CA, Wolf MO. Room temperature crystallization of amorphous polysiloxane using photodimerization. Chem Sci 2020; 11:3081-3088. [PMID: 34122813 PMCID: PMC8157530 DOI: 10.1039/c9sc06235a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/13/2020] [Indexed: 11/21/2022] Open
Abstract
Bulk crystallization in flexible polymeric systems is difficult to control due to the random orientation of the chains. Here we report a photo cross-linking strategy that results in simultaneous cross-linking and crystallization of polysiloxane chains into millimeter sized leaf-like polycrystalline structures. Polymers containing pendant anthracene groups are prepared and undergo [4+4] photocycloaddition under 365 nm irradiation at room temperature. The growth and morphology of the crystalline structures is studied using polarized optical microscopy (POM) and atomic force microscopy and is found to progress through three unique stages of nucleation, growth, and constriction. The mobility of the individual chains is probed using pulsed-field gradient (PFG) NMR to provide insights into the diffusion processes that may govern chain transport to the growing crystal fronts. The room temperature crystallization of this conventionally amorphous polymer system may allow for a new level of morphological control for silicone materials.
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Affiliation(s)
- Taylor Wright
- Department of Chemistry, University of British Columbia Vancouver BC Canada V6T 1Z1
| | - Yael Petel
- Department of Chemistry, University of British Columbia Vancouver BC Canada V6T 1Z1
| | - Carson O Zellman
- Department of Chemistry, Simon Fraser University 8888 University Drive Burnaby BC Canada V5A 1S6
| | - Ethan R Sauvé
- Department of Chemistry, University of British Columbia Vancouver BC Canada V6T 1Z1
| | - Zachary M Hudson
- Department of Chemistry, University of British Columbia Vancouver BC Canada V6T 1Z1
| | - Carl A Michal
- Department of Chemistry, University of British Columbia Vancouver BC Canada V6T 1Z1
- Department of Physics and Astronomy, University of British Columbia Vancouver BC Canada V6T 1Z1
| | - Michael O Wolf
- Department of Chemistry, University of British Columbia Vancouver BC Canada V6T 1Z1
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Singh VK, Shalu S, Chaurasia SK, Singh RK. Development of ionic liquid mediated novel polymer electrolyte membranes for application in Na-ion batteries. RSC Adv 2016. [DOI: 10.1039/c6ra06047a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polymer electrolyte membranes based on polymer PEO, ionic liquid, 1-butyl-3-methylimidazolium methylsulfate (BMIM-MS), and salt, sodium methylsulfate (NaMS), were prepared and characterized by SEM, XRD, TGA/DTGA, DSC, ac impedance spectroscopy and cyclic voltammetry.
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Affiliation(s)
- Varun Kumar Singh
- Ionic Liquid & Solid State Ionics Laboratory
- Department of Physics
- Banaras Hindu University
- Varanasi-221005
- India
| | - Shalu Shalu
- Ionic Liquid & Solid State Ionics Laboratory
- Department of Physics
- Banaras Hindu University
- Varanasi-221005
- India
| | - Sujeet Kumar Chaurasia
- Ionic Liquid & Solid State Ionics Laboratory
- Department of Physics
- Banaras Hindu University
- Varanasi-221005
- India
| | - Rajendra Kumar Singh
- Ionic Liquid & Solid State Ionics Laboratory
- Department of Physics
- Banaras Hindu University
- Varanasi-221005
- India
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Structural and optical features of ureasiloxane–polyethylene oxide hybrids containing CeO2 nanoparticles. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Molina EF, Pulcinelli SH, Briois V, Santilli CV. Fine-tuning of a nanostructure, swelling, and drug delivery profile by blending ureasil–PEO and ureasil–PPO hybrids. Polym Chem 2014. [DOI: 10.1039/c3py01126g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Rajput DS, Yamada K, Sekhon SS. Study of Ion Diffusional Motion in Ionic Liquid-Based Polymer Electrolytes by Simultaneous Solid State NMR and DTA. J Phys Chem B 2013; 117:2475-81. [DOI: 10.1021/jp3116512] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Koji Yamada
- Department of Applied Molecular
Chemistry, College of Industrial Technology, Nihon University, Narashino, Chiba, 275-8575, Japan
| | - S. S. Sekhon
- Department of Physics, Guru Nanak Dev University, Amritsar, 143005, India
- Department of Physics, The University of the West Indies, St. Augustine, Trinidad
and Tobago, West Indies
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11
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Lopes L, Molina EF, Chiavacci LA, Santilli CV, Briois V, Pulcinelli SH. Drug–matrix interaction of sodium diclofenac incorporated into ureasil–poly(ethylene oxide) hybrid materials. RSC Adv 2012. [DOI: 10.1039/c2ra01216b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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12
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Chaurasia SK, Singh RK, Chandra S. Dielectric relaxation and conductivity studies on (PEO:LiClO4
) polymer electrolyte with added ionic liquid [BMIM][PF6
]: Evidence of ion-ion interaction. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22182] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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