1
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Urea-assisted ion-transport behavior in magnesium ion conducting solid polymer electrolyte membranes intended for magnesium batteries. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01910-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Oguz O, Candau N, Stoclet G, Simsek E, Kosak Soz C, Yilgor E, Yilgor I, Menceloglu YZ. Geometric Confinement Controls Stiffness, Strength, Extensibility, and Toughness in Poly(urethane–urea) Copolymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oguzhan Oguz
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956 Orhanli, Tuzla, Istanbul, Turkey
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
| | - Nicolas Candau
- Centre Català del Plàstic (CCP), Universitat Politècnica de Catalunya Barcelona Tech (EEBE-UPC), Av. D’Eduard Maristany, 16, Barcelona 08019, Spain
| | - Gregory Stoclet
- CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Univ. Lille, F-59000 Lille, France
| | - Eren Simsek
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956 Orhanli, Tuzla, Istanbul, Turkey
| | - Cagla Kosak Soz
- KUYTAM Surface Science and Technology Center, Chemistry Department, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Emel Yilgor
- KUYTAM Surface Science and Technology Center, Chemistry Department, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Iskender Yilgor
- KUYTAM Surface Science and Technology Center, Chemistry Department, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Yusuf Z. Menceloglu
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956 Orhanli, Tuzla, Istanbul, Turkey
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
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Cho M, Ko FK, Renneckar S. Molecular Orientation and Organization of Technical Lignin-Based Composite Nanofibers and Films. Biomacromolecules 2019; 20:4485-4493. [PMID: 31647629 DOI: 10.1021/acs.biomac.9b01242] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Natural materials are highly anisotropic, maximizing performance of the polymeric structures while conserving mass and enhancing function. In synthetic materials, nanoscale fibers produced by electrospinning often contain molecular alignment of polymers along the fiber axis achieving some similarity to natural fibers. In this study, isolated softwood kraft lignin (SKL) was electrospun into aligned fibers utilizing a special collector. The molecular organization of lignin within the aligned nanofibers was investigated by polarized light optical microscopy. Furthermore, the functional groups that had preferred alignment along the fiber axis were identified with polarized Fourier transform infrared (FTIR) spectroscopy based on dichroism measurements. In addition, nanocrystalline cellulose (NCC) was added to the lignin solutions in order to create composite nanofibers. Both the orientation of NCC within the nanoscale fibers and the impact this component had on the degree of orientation of SKL within the aligned nanofibers were revealed by utilizing polarized FTIR. Finally, solvent cast lignin films were analyzed for their anisotropic polarizability, demonstrating birefringence with and without nanocrystalline cellulose. The work provided unique insight into both preferred orientation (fibers) and assembly (films) for technical lignin due to processing.
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Gao Y, Guo B, Xu J. Critical Size of Secondary Nuclei Determined via Nucleation Theorem Reveals Selective Nucleation in Three-Component Co-Crystals. ENTROPY 2019. [PMCID: PMC7514336 DOI: 10.3390/e21111032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The critical size of the secondary nuclei plays an important role in determining the crystal growth rate. In the past, the Nucleation Theorem has been applied to determine the number of molecules in the critical nuclei of a single-component crystal via variation of the crystal growth rate with dilution by the non-crystallizable component. In this work, we extend the method to the three-component co-crystal poly (ethylene oxide)/urea/thiourea inclusion compound. The theoretical crystal growth kinetics were deduced and the dependence of the radial growth rate of the inclusion compound spherulites on the mass fraction of urea in urea/thiourea was measured. The results reveal that the secondary nuclei of the poly (ethylene oxide)/urea/thiourea inclusion compound consist mainly of ethylene oxide repeating units and urea molecules. We propose that only urea molecules and ethylene oxide repeating units are selected to form the secondary nuclei while co-crystallization of the three components happens at the lateral spreading stage. As a result, the composition of the critical secondary nuclei is different from that of the bulk inclusion compound crystals. The work is expected to deepen our understanding of the nucleation of multi-component co-crystals.
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Affiliation(s)
| | | | - Jun Xu
- Correspondence: ; Tel.: +86-10-6278-4740
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5
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Review of Recent Nuclear Magnetic Resonance Studies of Ion Transport in Polymer Electrolytes. MEMBRANES 2018; 8:membranes8040120. [PMID: 30513636 PMCID: PMC6316001 DOI: 10.3390/membranes8040120] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/16/2018] [Accepted: 11/20/2018] [Indexed: 11/16/2022]
Abstract
Current and future demands for increasing the energy density of batteries without sacrificing safety has led to intensive worldwide research on all solid state Li-based batteries. Given the physical limitations on inorganic ceramic or glassy solid electrolytes, development of polymer electrolytes continues to be a high priority. This brief review covers several recent alternative approaches to polymer electrolytes based solely on poly(ethylene oxide) (PEO) and the use of nuclear magnetic resonance (NMR) to elucidate structure and ion transport properties in these materials.
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Li S, Shen J, Tonelli AE. Self-assembled complexation of urea with poly (methyl methacrylate): A potential method for small molecule encapsulation in PMMA. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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7
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Yang H, Jiang S, Fang H, Hu X, Duan G, Hou H. Molecular orientation in aligned electrospun polyimide nanofibers by polarized FT-IR spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 200:339-344. [PMID: 29709793 DOI: 10.1016/j.saa.2018.04.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 04/19/2018] [Accepted: 04/22/2018] [Indexed: 06/08/2023]
Abstract
Quantitative explanation on the improved mechanical properties of aligned electrospun polyimide (PI) nanofibers as the increased imidization temperatures is highly required. In this work, polarized FT-IR spectroscopy is applied to solve this problem. Based on the polarized FT-IR spectroscopy and the molecular model in the fibers, the length of the repeat unit of PI molecule, the angle between the fiber axis and the symmetric stretching direction of carbonyl group on the imide ring, and the angle between the PI molecular axis and fiber axis are all investigated. The Mark-Howink equation is used to calculate the number-average molar mass of PI molecules. The orientation states of PI molecules in the electrospun nanofibers are studied from the number-average molar mass of PI molecules and the average fiber diameter. Quantitative analysis of the orientation factor of PI molecules in the electrospun nanofibers is performed by polarized FT-IR spectroscopy.
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Affiliation(s)
- Haoqi Yang
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Shaohua Jiang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Hong Fang
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Xiaowu Hu
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Gaigai Duan
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Haoqing Hou
- Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
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8
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Electric field distribution and initial jet motion induced by spinneret configuration for molecular orientation in electrospun fibers. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.11.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Gao Y, Yao SF, Ye HM, Guo BH, Xu J. Orientation of polymer chains in spherulites of poly(ethylene oxide)-urea inclusion compounds. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.10.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Xia H, Wang R, Liu Y, Cheng J, Zou G, Zhang Q, Zhang D, Wang P, Ming H, Badugu R, Lakowicz JR. Active Polymer Microfiber with Controlled Polarization Sensitivity. ADVANCED OPTICAL MATERIALS 2016; 4:371-377. [PMID: 27099828 PMCID: PMC4835039 DOI: 10.1002/adom.201500552] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Controlled Polarization Sensitivity of an active polymer microfiber has been proposed and realized with the electrospun method. The fluorescence intensity guiding through this active polymer microfiber shows high sensitivity to the polarization state of the excitation light. What is more, the fluorescence out-coupled from tip of the microfiber can be of designed polarization state. Principle of these phenomena lies on the ordered and controlled orientation of the polydiacetylene (PDA) main chains inside polymer microfiber.
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Affiliation(s)
- Hongyan Xia
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ruxue Wang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yingying Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Junjie Cheng
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Gang Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Qijin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Douguo Zhang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Pei Wang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Hai Ming
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Ramachandram Badugu
- Center for Fluorescence Spectroscopy, Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, United States
| | - Joseph R. Lakowicz
- Center for Fluorescence Spectroscopy, Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, United States
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12
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Ye HM, Liu KS, Zhou Q. Inclusion complex formed between poly(ethylene oxide) and thiourea. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.11.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Effect of small molecule hydrogen-bond crosslinker and solvent power on the electrospinnability of poly(4-vinyl pyridine). POLYMER 2015. [DOI: 10.1016/j.polymer.2014.12.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Jin G, Li Y, Prabhakaran MP, Tian W, Ramakrishna S. In vitro and in vivo evaluation of the wound healing capability of electrospun gelatin/PLLCL nanofibers. J BIOACT COMPAT POL 2014. [DOI: 10.1177/0883911514553525] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent progress in tissue-engineered skin grafts has alleviated the demand for autologous split thickness skin grafts for treatment of large skin wounds. In this study, a series of cost-effective nanofibrous scaffolds aimed at full-thickness wound healing are fabricated by blending gelatin (Gel) with poly(l-lactic acid)-b-poly( ε-caprolactone) (PLLCL) and electrospun to obtain composite Gel/PLLCL nanofibers in four different weight ratios (w/w) of 80:20 [Gel/PLLCL(20)], 70:30 [Gel/PLLCL(30)], 60:40 [Gel/PLLCL(40)], and 50:50 [Gel/PLLCL(50)]. The mechanical properties of these nanofibrous scaffolds were evaluated in both dry and wet conditions, and the Gel/PLLCL(40) retained suitable tensile stress (1.16 ± 0.03 MPa) to be handled even in wet conditions. Moreover, the proliferations of fibroblast cells on Gel/PLLCL(40) were 15%, 7% and 10% higher compared to cell proliferations on Gel/PLLCL(20), Gel/PLLCL(30), and Gel/PLLCL(50), respectively. In vitro results confirmed Gel/PLLCL(40) as the optimized scaffold composition suitable for skin tissue engineering. The healing ability of this scaffold was studied in vivo using mouse models. The Gel/PLLCL(40) greatly accelerated wound closure and regeneration occurring in the first 10 days of implantation compared to the control group. In addition, newly regenerated epidermis was only found in the nanofibrous scaffolds–treated group, and it was comparable to the epidermis of normal skin.
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Affiliation(s)
- Guorui Jin
- Department of Mechanical Engineering, National University of Singapore, Singapore
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
| | - Yong Li
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin, P.R. China
| | - Molamma P Prabhakaran
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
| | - Weiming Tian
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin, P.R. China
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, Singapore
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
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15
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Morphology and crystalline structure of inclusion compounds formed between poly(ethylene glycol) and urea. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1496-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Jin G, Prabhakaran MP, Ramakrishna S. Photosensitive and biomimetic core-shell nanofibrous scaffolds as wound dressing. Photochem Photobiol 2014; 90:673-81. [PMID: 24417712 DOI: 10.1111/php.12238] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 01/06/2014] [Indexed: 12/19/2022]
Abstract
Tissue engineered skin grafts that mimic the native extracellular matrix of skin has gained huge popularity among clinicians since they increase the survival rate of the patients. Phototherapy shows promising results with respect to acute and chronic pain relief, treatment of inflammatory conditions and promotion of wound healing. Here, we encapsulated a photosensitive polymer poly (3-hexylthiophene) (P3HT) and epidermal growth factor in the core-shell-structured Gelatin/poly(L-lactic acid)-co-poly-(ε-caprolactone) nanofibers [Gel/PLLCL/P3GF(cs)] by coaxial spinning and studied the potential application of the Gel/PLLCL/P3GF(cs) nanofibrous scaffold as a novel skin graft. The proliferation of fibroblasts was significantly improved on Gel/PLLCL/P3GF(cs) under light stimulation compared to fibroblasts on the same scaffold under dark condition. Studies on the in vitro wound healing ability of Gel/PLLCL/P3GF(cs) showed complete closure of wound after 9 days under "light stimulation" too. Furthermore, the potential of adipose-derived stem cells (ASCs) to differentiate to epidermal cells on Gel/PLLCL/P3GF(cs) was evaluated. The differentiated ASCs with keratinocytes morphology were only found on the light stimulated Gel/PLLCL/P3GF(cs). Our results suggest that the photosensitive core-shell Gel/PLLCL/P3GF(cs) nanofibers could be a novel substrate to aid in the reestablishment of skin architecture.
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Affiliation(s)
- Guorui Jin
- Department of Mechanical Engineering, National University of Singapore, Singapore; Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
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17
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Richard-Lacroix M, Pellerin C. Molecular Orientation in Electrospun Fibers: From Mats to Single Fibers. Macromolecules 2013. [DOI: 10.1021/ma401681m] [Citation(s) in RCA: 206] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Marie Richard-Lacroix
- Département de chimie
and Centre for Self-Assembled Chemical Structures, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Christian Pellerin
- Département de chimie
and Centre for Self-Assembled Chemical Structures, Université de Montréal, Montréal, QC H3C 3J7, Canada
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18
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Jin G, Prabhakaran MP, Kai D, Ramakrishna S. Controlled release of multiple epidermal induction factors through core–shell nanofibers for skin regeneration. Eur J Pharm Biopharm 2013; 85:689-98. [DOI: 10.1016/j.ejpb.2013.06.002] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 05/27/2013] [Accepted: 06/03/2013] [Indexed: 12/16/2022]
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19
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Ye HM, Song YY, Xu J, Guo BH, Zhou Q. Melting behavior of inclusion complex formed between polyethylene glycol oligomer and urea. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.04.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Maiz J, Martin J, Mijangos C. Confinement effects on the crystallization of poly(ethylene oxide) nanotubes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:12296-12303. [PMID: 22834683 DOI: 10.1021/la302675k] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this work, we show the effects of nanoconfinement on the crystallization of poly(ethylene oxide) (PEO) nanotubes embedded in anodized aluminum oxide (AAO) templates. The morphological characteristics of the hollow 1D PEO nanostructures were evaluated by scanning electron microscopy (SEM). The crystallization of the PEO nanostructures and bulk was studied with differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). The crystallization of PEO nanotubes studied by DSC is strongly influenced by the confinement showing a strong reduction in the crystallization temperature of the polymer. X-ray diffraction (XRD) experiments confirmed the isothermal crystallization results obtained by DSC, and studies carried out at low temperatures showed the absence of crystallites oriented with the extended chains perpendicular to the pore wall within the PEO nanotubes, which has been shown to be the typical crystal orientation for one-dimensional polymer nanostructures. In contrast, only planes oriented 33, 45, and 90° with respect to the plane (120) are arranged parallel to the pore's main axis, indicating preferential crystal growth in the direction of the radial component. Calculations based on classical nucleation theory suggest that heterogeneous nucleation prevails in the bulk PEO whereas for the PEO nanotubes a surface nucleation mechanism is more consistent with the obtained results.
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Affiliation(s)
- Jon Maiz
- Instituto de Ciencia y Tecnología de Polímeros (ICTP), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
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22
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Omer M, Kamal T, Cho HH, Kim DK, Park SY. Preparation and structure of nylon 4/6 random-copolymer nanofibers. Macromol Res 2012. [DOI: 10.1007/s13233-012-0121-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Changsarn S, Mendez JD, Shanmuganathan K, Foster EJ, Weder C, Supaphol P. Biologically inspired hierarchical design of nanocomposites based on poly(ethylene oxide) and cellulose nanofibers. Macromol Rapid Commun 2011; 32:1367-72. [PMID: 21681994 DOI: 10.1002/marc.201100183] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 05/10/2011] [Indexed: 11/06/2022]
Abstract
Attempts to create hierarchically structured, uniaxially oriented nanocomposites comprising cellulose nanowhiskers (CNWs), which promise anisotropic mechanical properties, are exceedingly rare. We report here the fabrication of uniaxially-oriented arrays of microfibers based on poly(ethylene oxide) (PEO) and CNWs by electrospinning. Compared with the neat PEO fibers, the incorporation of CNWs within the fibers increased the storage modulus (E') of arrays along the fiber axis of the PEO/CNW nanocomposite fibers. Successful incorporation of the CNWs within each of the as-spun PEO/CNW nanocomposite fibers in the direction parallel to the fiber axis was verified by both scanning and transmission electron microscopy.
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Affiliation(s)
- Sutheerat Changsarn
- The Petroleum and Petrochemical College and The Center for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Soi Chula 12, Phyathai Rd., Pathumwan, Bangkok 10330, Thailand
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24
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Wu S, Li F, Wang H, Fu L, Zhang B, Li G. Effects of poly (vinyl alcohol) (PVA) content on preparation of novel thiol-functionalized mesoporous PVA/SiO2 composite nanofiber membranes and their application for adsorption of heavy metal ions from aqueous solution. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.10.015] [Citation(s) in RCA: 143] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Liu Y, Antaya H, Pellerin C. Structure and Phase Behavior of the Poly(ethylene oxide)−Thiourea Complex Prepared by Electrospinning. J Phys Chem B 2010; 114:2373-8. [DOI: 10.1021/jp9103867] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yang Liu
- Département de chimie, Centre for Self-Assembled Chemical Structures, Université de Montréal, Montréal, QC, H3C 3J7, Canada
| | - Hélène Antaya
- Département de chimie, Centre for Self-Assembled Chemical Structures, Université de Montréal, Montréal, QC, H3C 3J7, Canada
| | - Christian Pellerin
- Département de chimie, Centre for Self-Assembled Chemical Structures, Université de Montréal, Montréal, QC, H3C 3J7, Canada
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26
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Bracco S, Comotti A, Valsesia P, Beretta M, Sozzani P. Self-assembly of 1,4-cis-polybutadiene and an aromatic host to fabricate nanostructured crystals by CH⋯π interactions. CrystEngComm 2010. [DOI: 10.1039/c002931a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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28
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Liu Y, Antaya H, Pellerin C. Characterization of the stable and metastable poly(ethylene oxide)-urea complexes in electrospun fibers. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/polb.21523] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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