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Ren W, Pan J, Gai W, Pan X, Chen H, Li J, Huang L. Fabrication and characterization of PVDF-CTFE/SiO2 electrospun nanofibrous membranes with micro and nano-rough structures for efficient oil-water separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Ma W, Pan J, Ren W, Chen L, Huang L, Xu S, Jiang Z. Fabrication of antibacterial and self-cleaning CuxP@g-C3N4/PVDF-CTFE mixed matrix membranes with enhanced properties for efficient ultrafiltration. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120792] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Li Z, Liao J, Xi Z, Zhu W, Zhang Z. Influence of Steric Hindrance on Ferro‐ and Piezoelectric Performance of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900273] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhong Li
- Department of Applied ChemistryXi'an Key Laboratory of Sustainable Energy Materials ChemistryMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterSchool of ScienceXi'an Jiaotong University Xi'an 710049 China
| | - Jiani Liao
- Department of Applied ChemistryXi'an Key Laboratory of Sustainable Energy Materials ChemistryMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterSchool of ScienceXi'an Jiaotong University Xi'an 710049 China
| | - Ziting Xi
- Department of Applied ChemistryXi'an Key Laboratory of Sustainable Energy Materials ChemistryMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterSchool of ScienceXi'an Jiaotong University Xi'an 710049 China
| | - Weiwei Zhu
- Zhejiang Research Institute of Chemical Industry No. 387 Tianmushan Road Hangzhou 310000 China
| | - Zhicheng Zhang
- Department of Applied ChemistryXi'an Key Laboratory of Sustainable Energy Materials ChemistryMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterSchool of ScienceXi'an Jiaotong University Xi'an 710049 China
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Jordan AM, Lee P, Thurber C, Macosko CW. Adapting a Capillary Rheometer for Research on Polymer Melt Interfaces. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03674] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alex M. Jordan
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55454, United States
- Plastics Engineering, University of Wisconsin − Stout, Menomonie, Wisconsin 54751, United States
| | - Patrick Lee
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Christopher Thurber
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55454, United States
- The Dow Chemical
Co., Midland, Michigan 48674, United States
| | - Christopher W. Macosko
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55454, United States
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Samanta P, Srivastava R, Nandan B. Confinement‐driven cocrystallization of binary polymer mixtures of different chain length in electrospun nanofibers. POLYMER CRYSTALLIZATION 2018. [DOI: 10.1002/pcr2.10017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Pratick Samanta
- Department of Textile TechnologyIndian Institute of Technology Delhi New Delhi Delhi India
| | - Rajiv Srivastava
- Department of Textile TechnologyIndian Institute of Technology Delhi New Delhi Delhi India
| | - Bhanu Nandan
- Department of Textile TechnologyIndian Institute of Technology Delhi New Delhi Delhi India
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Samanta P, Srivastava R, Nandan B. Block copolymer compatibilization driven frustrated crystallization in electrospun nanofibers of polystyrene/poly(ethylene oxide) blends. RSC Adv 2018; 8:17989-18007. [PMID: 35542103 PMCID: PMC9080552 DOI: 10.1039/c8ra02391c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 05/08/2018] [Indexed: 11/21/2022] Open
Abstract
The confined crystallization behaviour of poly(ethylene oxide) (PEO) has been studied in electrospun nanofibers of the phase-separated blends of polystyrene (PS) and PEO compatibilized with polystyrene-block-poly(ethylene oxide) (PS-b-PEO) block copolymer. The PS was present as the majority component such that the electrospun nanofibers consisted of PEO domains dispersed in the PS matrix. The phase separation in the blend occurred under the radial constraint of the nanofibers which led to the formation of small-sized fibrillar PEO domains. The use of block copolymer compatibilizer resulted in a noticeable decrease in the PEO domain size in the as-spun nanofibers. Moreover, the decrease in the domain size and domain connectivity was more substantial in the thermally annealed blend nanofibers due to the suppression of the domain coalescence mechanism resulting from the localization of the PS-b-PEO block copolymer at the interface. Consequently, the fraction of PEO domains crystallizing via homogeneous nucleation increased in the compatibilized blend nanofibers due to the presence of higher number of heterogeneity free PEO domains and disruption in their spatial connectivity. Interestingly, in the compatibilized blend nanofibers consisting of low molecular weight PEO, additional crystallization event attributed to surface nucleation was observed. The surface nucleation, plausibly, resulted from the formation of wet-brush structures where the PEO homopolymers homogeneously wet the PEO blocks present at the interface. In such a scenario, the PEO crystallization occurred via surface nucleation at the domain interface. The surface nucleated crystallization was absent in the compatibilized blend nanofibers composed of high molecular weight PEO presumably due to the formation of morphology with dry-brush structures. Confined crystallization behaviour of poly(ethylene oxide) (PEO) was studied in electrospun nanofibers of the phase-separated blends of polystyrene (PS) and PEO compatibilized with polystyrene-block-poly(ethylene oxide) (PS-b-PEO) block copolymer.![]()
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Affiliation(s)
- Pratick Samanta
- Department of Textile Technology, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Rajiv Srivastava
- Department of Textile Technology, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Bhanu Nandan
- Department of Textile Technology, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
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Messin T, Follain N, Guinault A, Sollogoub C, Gaucher V, Delpouve N, Marais S. Structure and Barrier Properties of Multinanolayered Biodegradable PLA/PBSA Films: Confinement Effect via Forced Assembly Coextrusion. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29101-29112. [PMID: 28758727 DOI: 10.1021/acsami.7b08404] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multilayer coextrusion processing was applied to produce 2049-layer film of poly(butylene succinate-co-butylene adipate) (PBSA) confined against poly(lactic acid) (PLA) using forced assembly, where the PBSA layer thickness was about 60 nm. This unique technology allowed to process semicrystalline PBSA as confined polymer and amorphous PLA as confining polymer in a continuous manner. The continuity of PBSA layers within the 80/20 wt % PLA/PBSA layered films was clearly evidenced by atomic force microscopy (AFM). Similar thermal events to the reference films were revealed by thermal studies; indicating no diffusion of polymers during the melt-processing. Mechanical properties were measured for the multilayer film and the obtained results were those expected considering the fraction of each polymer, revealing the absence of delamination in the PLA/PBSA multinanolayer film. The confinement effect induced by PLA led to a slight orientation of the crystals, an increase of the rigid amorphous fraction (RAF) in PBSA with a densification of this fraction without changing film crystallinity. These structural changes allowed to strongly improve the water vapor and gas barrier properties of the PBSA layer into the multilayer film up to two decades in the case of CO2 gas. By confining the PBSA structure in very thin and continuous layers, it was then possible to improve the barrier performances of a biodegradable system and the resulting barrier properties were successfully correlated to the effect of confinement on the microstructure and the chain segment mobility of the amorphous phase. Such investigation on these multinanolayers of PLA/PBSA with the aim of evidencing relationships between microstructure implying RAF and barrier performances has never been performed yet. Besides, gas and water permeation results have shown that the barrier improvement obtained from the multilayer was mainly due to the reduction of solubility linked to the reduction of the free volume while the tortuosity effect, as usually expected, was not really observed. This work brings new insights in the field of physicochemical behaviors of new multilayer films made of biodegradable polyesters but also in interfacial processes due to the confinement effect induced in these multinanolayer structures obtained by the forced assembly coextrusion. This original coextrusion process was a very advantageous technique to produce eco-friendly materials with functional properties without the help of tie layer, additives, solvents, surface treatments, or inorganic fillers.
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Affiliation(s)
- Tiphaine Messin
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, PBS, 76000 Rouen, France
| | - Nadège Follain
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, PBS, 76000 Rouen, France
| | - Alain Guinault
- PIMM, Arts et Métiers ParisTech/CNRS/CNAM, 75013 Paris, France
| | | | - Valérie Gaucher
- Unité Matériaux et Transformations, UMR 8207 CNRS/Université Lille 1, 59655 Villeneuve d'Ascq, France
| | - Nicolas Delpouve
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, GPM, 76000 Rouen, France
| | - Stéphane Marais
- Normandie Univ, UNIROUEN Normandie, INSA Rouen, CNRS, PBS, 76000 Rouen, France
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Jordan AM, Kim SE, Van de Voorde K, Pokorski JK, Korley LTJ. In Situ Fabrication of Fiber Reinforced Three-Dimensional Hydrogel Tissue Engineering Scaffolds. ACS Biomater Sci Eng 2017; 3:1869-1879. [DOI: 10.1021/acsbiomaterials.7b00229] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Alex M. Jordan
- Center for Layered Polymeric
Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
| | - Si-Eun Kim
- Center for Layered Polymeric
Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
| | - Kristen Van de Voorde
- Center for Layered Polymeric
Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
| | - Jonathan K. Pokorski
- Center for Layered Polymeric
Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
| | - LaShanda T. J. Korley
- Center for Layered Polymeric
Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
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Lenart WR, Jang KS, Jordan AM, Baer E, Korley LT. Mechanically tunable dual-component polyolefin fiber mats via two-dimensional multilayer coextrusion. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Jordan AM, Viswanath V, Kim SE, Pokorski JK, Korley LTJ. Processing and surface modification of polymer nanofibers for biological scaffolds: a review. J Mater Chem B 2016; 4:5958-5974. [PMID: 32263485 DOI: 10.1039/c6tb01303a] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polymeric fibrous constructs possess high surface area-to-volume ratios when compared with solid substrates and are quite commonly used as tissue engineering and cell growth scaffolds. An overview of important design and material considerations for fibrous scaffolds as well as an outline of both established and emerging solution- and melt-based fabrication techniques is provided. Innovative post-process surface modification avenues using "click" chemistry with both single and dual active cues as well as gradient cues, which maintain the fibrous structure are described. By combining process parameters with post-process surface modification, researchers have been able to selectively tune cellular response after seeding and culturing on fibrous constructs.
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Affiliation(s)
- Alex M Jordan
- Center for Layered Polymeric Systems, Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, USA.
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Yu F, Deng H, Bai H, Zhang Q, Wang K, Chen F, Fu Q. Confine Clay in an Alternating Multilayered Structure through Injection Molding: A Simple and Efficient Route to Improve Barrier Performance of Polymeric Materials. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10178-10189. [PMID: 25915444 DOI: 10.1021/acsami.5b00347] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Various methods have been devoted to trigger the formation of multilayered structure for wide range of applications. These methods are often complicated with low production efficiency or require complex equipment. Herein, we demonstrate a simple and efficient method for the fabrication of polymeric sheets containing multilayered structure with enhanced barrier property through high speed thin-wall injection molding (HSIM). To achieve this, montmorillonite (MMT) is added into PE first, then blended with PP to fabricate PE-MMT/PP ternary composites. It is demonstrated that alternating multilayer structure could be obtained in the ternary composites because of low interfacial tension and good viscosity match between different polymer components. MMT is selectively dispersed in PE phase with partial exfoliated/partial intercalated microstructure. 2D-WAXD analysis indicates that the clay tactoids in PE-MMT/PP exhibits an uniplanar-axial orientation with their surface parallel to the molded part surface, while the tactoids in binary PE-MMT composites with the same overall MMT contents illustrate less orientation. The enhanced orientation of nanoclay in PE-MMT/PP could be attributed to the confinement of alternating multilayer structure, which prohibits the tumbling and rotation of nanoplatelets. Therefore, the oxygen barrier property of PE-MMT/PP is superior to that of PE-MMT because of increased gas permeation pathway. Comparing with the results obtained for PE based composites in literature, outstanding barrier property performance (45.7% and 58.2% improvement with 1.5 and 2.5 wt % MMT content, respectively) is achieved in current study. Two issues are considered responsible for such improvement: enhanced MMT orientation caused by the confinement in layered structure, and higher local density of MMT in layered structure induced denser assembly. Finally, enhancement in barrier property by confining impermeable filler into alternating multilayer structure through such simple and efficient method could provide a novel route toward high-performance packaging materials and other functional materials require layered structure.
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Affiliation(s)
- Feilong Yu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Hua Deng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Hongwei Bai
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Qin Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ke Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Feng Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Qiang Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Jordan AM, Korley LTJ. Toward a Tunable Fibrous Scaffold: Structural Development during Uniaxial Drawing of Coextruded Poly(ε-caprolactone) Fibers. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00370] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Alex M. Jordan
- Center for Layered Polymeric Systems, Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
| | - LaShanda T. J. Korley
- Center for Layered Polymeric Systems, Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
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