1
|
Horathal Pedige M, Sugawara A, Uyama H. Multifunctional Chitosan Nanofiber-Based Sponge Materials Using Freeze-Thaw and Post-Cross-Linking Method. ACS OMEGA 2024; 9:36464-36474. [PMID: 39220476 PMCID: PMC11359632 DOI: 10.1021/acsomega.4c04317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/04/2024] [Accepted: 07/22/2024] [Indexed: 09/04/2024]
Abstract
The fabrication of porous sponge materials with stable structures via cross-linking diverse polymers presents significant challenges due to the simultaneous requirements for phase separation as a pore-forming step and cross-linking reactions during the fabrication process. To address these challenges, we developed a sponge material solely from natural-based polymers, specifically chitosan nanofibers (CSNFs) and dialdehyde carboxymethyl cellulose (DACMC), employing a straightforward, eco-friendly technique. This technique integrates a facile freeze-thaw method with subsequent cross-linking between CSNFs and DACMC. This method effectively addresses the difficulties associated with pore formation in materials, which typically arise from the rapid formation and precipitation of polyionic complexes during the mixing of anionic and cationic polymers, using ice crystals as a rigid template. The resultant sponge materials exhibit remarkable shape recoverability in their wet state and maintain light, stable porosity in the dry state. Furthermore, in comparison to commonly used commercial foams, this composite porous material demonstrates superior fire retardancy and thermal insulation properties in its dry state. Additionally, it shows effective adsorption capacities for both cationic and anionic dyes and metal ions. This method of using biobased polymers to produce porous composites offers a promising avenue for creating multifunctional materials, with potential applications across various industries.
Collapse
Affiliation(s)
| | - Akihide Sugawara
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Uyama
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
2
|
Mousavi S, Filipová L, Ebert J, Heiligtag F, Daumke R, Loser W, Ledergerber B, Frank B, Adlhart C. Clarification of yeast cell suspensions by a highly porous polyamide nanofiber sponge. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
3
|
Yang Y, Luo H, Yang H, Shi H, Hou J. Polyacrylonitrile/natural loofah sponge with spider web structure as a novel platform for enhanced oil adsorption. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yuhang Yang
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering Jilin University Changchun China
| | - Hao Luo
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering Jilin University Changchun China
| | - Huimin Yang
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering Jilin University Changchun China
| | - Huiyan Shi
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering Jilin University Changchun China
| | - Jiazi Hou
- Key laboratory of Automobile Materials of Ministry of Education, College of Materials Science and Engineering Jilin University Changchun China
| |
Collapse
|
4
|
Shen Y, Wang L, Liu F, Liu H, Li D, Liu Q, Deng B. Solvent Vapor Strengthened Polyimide Nanofiber-Based Aerogels with High Resilience and Controllable Porous Structure. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53104-53114. [PMID: 33176100 DOI: 10.1021/acsami.0c15751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Owing to the hierarchically three-dimensional (3D) network, ultralow density, and high porosity, nanofiber-based aerogels (NFAs) have drawn great attention recently. However, precise control of the porous structure and mechanical properties of NFAs, which have been proved to be extremely essential to the applications, still remains a major challenge. Herein, electrospun polyimide (PI) nanofibers were utilized as building blocks to construct NFAs through the solid-templating technique. The porous structure of PI nanofiber-based aerogels (PI-NFAs) could be adjusted by changing the processing parameters. By further welding the adjacent nanofibers at the contact sites with solvent vapor, high-resilience PI-NFAs were successfully prepared with comparable or higher recoverable, under compression, folding and torsion relative to other NFAs. The welded PI-NFAs showed ultralow density (minimum of 0.96 mg/cm3), high porosity (maximum of 99.93%), and tunable hierarchical structure. Therefore, this study brought a new perspective on the simple preparation of high-resilience nanofiber-based aerogels with tunable porous structures.
Collapse
Affiliation(s)
- Ying Shen
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Lanlan Wang
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Feng Liu
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Huizhong Liu
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Dawei Li
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Qingsheng Liu
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| | - Bingyao Deng
- Key Laboratory of Eco-Textiles (Ministry of Education), Nonwoven Technology Laboratory, Jiangnan University, Wuxi 214122, China
| |
Collapse
|
5
|
Zech J, Mader M, Gündel D, Metz H, Odparlik A, Agarwal S, Mäder K, Greiner A. Noninvasive characterization (EPR, μCT, NMR) of 3D PLA electrospun fiber sponges for controlled drug delivery. Int J Pharm X 2020; 2:100055. [PMID: 32984812 PMCID: PMC7492987 DOI: 10.1016/j.ijpx.2020.100055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/17/2020] [Accepted: 08/20/2020] [Indexed: 11/23/2022] Open
Abstract
Highly porous 3D-scaffolds, made from cut, electrospun PLA fibers, are relatively new and promising systems for controlled drug-delivery applications. Because knowledge concerning fundamental processes of drug delivery from those scaffolds is limited, we noninvasively characterized drug-loading and drug-release mechanisms of these polymer-fiber sponges (PFS). We screened simplified PFS-implantation scenarios with EPR and μCT to quantify and 3D-visualize the absorption of model-biofluids and an oil, a possible drug-loading liquid. Saturation of PFS (6 × 8 mm, h x d) is governed by the high hydrophobicity of the material and air-entrapment. It required up to 45 weeks for phosphate-buffered saline and 11 weeks for a more physiological, surface-active protein-solution, indicating the slow fluid-uptake of PFS as an effective mechanism to substantially prolong the release of a drug incorporated within the scaffold. Medium-chain triglycerides, as a good wetting liquid, saturated PFS within seconds, suggesting PFS potential to serve as carrier-vessels for immobilizing hydrophobic drug-solutions to define a liquid's 3D-interface. Oil-retention under mechanical stress was therefore investigated. 1H NMR permitted insights into PFS-oil interaction, confirming surface-relaxation and restricted diffusion; both did not influence drug release from oil-loaded PFS. Results facilitate better understanding of PFS and their potential use in drug delivery.
Collapse
Key Words
- 15N-PCM, Carbamoyl-proxyl 15N-nitroxide 3-Carbamoyl-2,2,5,5-tetramethyl-3-pyrrolidin-1-oxyl
- 3D imaging
- BSA, Bovine serum albumin
- CVD, Chemical vapor deposition
- Coating
- Drug delivery system
- EPR, Electron paramagnetic resonance
- Electrospinning
- MCT, Medium-chained triglycerides
- NMR
- NMR, Nuclear magnetic resonance
- PFS, Polymer-fiber sponges
- PLA, Polylactide
- PPX, [2.2]Paracyclophane
- Sponge
- dTempol, 4-Hydroxy-Tempo-d17
- μCT, Micro-computed tomography
Collapse
Affiliation(s)
- Johanna Zech
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Wolfgang-Langenbeck-Straße 4, Halle (Saale) 06120, Germany
| | - Michael Mader
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, Bayreuth 95440, Germany
| | - Daniel Gündel
- Department of Nuclear Medicine, Martin Luther University Halle-Wittenberg, Ernst-Grube-Straße 40, Halle (Saale) 06120, Germany
| | - Hendrik Metz
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Wolfgang-Langenbeck-Straße 4, Halle (Saale) 06120, Germany
| | - Andreas Odparlik
- Department of Nuclear Medicine, Martin Luther University Halle-Wittenberg, Ernst-Grube-Straße 40, Halle (Saale) 06120, Germany
| | - Seema Agarwal
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, Bayreuth 95440, Germany
| | - Karsten Mäder
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Wolfgang-Langenbeck-Straße 4, Halle (Saale) 06120, Germany
| | - Andreas Greiner
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, Bayreuth 95440, Germany
| |
Collapse
|
6
|
A Green Approach to Modify Surface Properties of Polyurethane Foam for Enhanced Oil Absorption. Polymers (Basel) 2020; 12:polym12091883. [PMID: 32825561 PMCID: PMC7565495 DOI: 10.3390/polym12091883] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/12/2020] [Accepted: 08/12/2020] [Indexed: 02/06/2023] Open
Abstract
The non-selective property of conventional polyurethane (PU) foam tends to lower its oil absorption efficiency. To address this issue, we modified the surface properties of PU foam using a rapid solvent-free surface functionalization approach based on the chemical vapor deposition (CVD) method to establish an extremely thin yet uniform coating layer to improve foam performance. The PU foam was respectively functionalized using different monomers, i.e., perfluorodecyl acrylate (PFDA), 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA), and hexamethyldisiloxane (HMDSO), and the effect of deposition times (1, 5 and 10 min) on the properties of foam was investigated. The results showed that all the modified foams demonstrated a much higher water contact angle (i.e., greater hydrophobicity) and greater absorption capacities compared to the control PU foam. This is due to the presence of specific functional groups, e.g., fluorine (F) and silane (Si) in the modified PU foams. Of all, the PU/PHFBAi foam exhibited the highest absorption capacities, recording 66.68, 58.15, 53.70, and 58.38 g/g for chloroform, acetone, cyclohexane, and edible oil, respectively. These values were 39.19–119.31% higher than that of control foam. The promising performance of the PU/PHFBAi foam is due to the improved surface hydrophobicity attributed to the original perfluoroalkyl moieties of the HFBA monomer. The PU/PHFBAi foam also demonstrated a much more stable absorption performance compared to the control foam when both samples were reused for up to 10 cycles. This clearly indicates the positive impact of the proposed functionalization method in improving PU properties for oil absorption processes.
Collapse
|
7
|
Jiang S, Cheong JY, Nam JS, Kim ID, Agarwal S, Greiner A. High-density Fibrous Polyimide Sponges with Superior Mechanical and Thermal Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:19006-19014. [PMID: 32216283 DOI: 10.1021/acsami.0c02004] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A relatively low compressive strength significantly limits the practical application of sponges made from electrospun fibers because of an ultralow density <10 mg/cm3. To solve this problem, fibrous polyimide sponges with high density (HDPISG) were prepared using a "self-gluing" concept. The HDPISG have a density of up to 280 mg/cm3 and porosity >80%, and showed good breathability. The compressive strength increased significantly as the sponge densities increased. The HDPISG with a density of 280 mg/cm3 has the highest compressive strength of 5190 and 35,900 kPa under 50 and 80% compression, respectively. The small HDPISG can even hold weights more than ten thousand times of the weight of the sponge. The HDPISG also possess excellent mechanical properties after thermal treatments and no loss of compressive strength can be seen after heating at 300 °C for 30 h. Further study indicates that the HDPISG can maintain their main shape after carbonization.
Collapse
Affiliation(s)
- Shaohua Jiang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jun Young Cheong
- Department of Materials Science & Engineering, Korea Advanced Institute of Science & Technology, 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Jong Seok Nam
- Department of Materials Science & Engineering, Korea Advanced Institute of Science & Technology, 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science & Engineering, Korea Advanced Institute of Science & Technology, 335 Science Road, Daejeon 305-701, Republic of Korea
| | - Seema Agarwal
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Andreas Greiner
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| |
Collapse
|
8
|
Shami Z, Holakooei P. Durable Light-Driven Three-Dimensional Smart Switchable Superwetting Nanotextile as a Green Scaled-Up Oil-Water Separation Technology. ACS OMEGA 2020; 5:4962-4972. [PMID: 32201782 PMCID: PMC7081416 DOI: 10.1021/acsomega.9b03861] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/26/2020] [Indexed: 05/31/2023]
Abstract
Stimuli-responsive polymer architectures are attracting a lot of interest, but it still remains a great challenge to develop effective industrial-scale strategies. A single-stage and cost-effective approach was applied to fabricate a three-dimensional (3D) smart responsive surface with fast and reversibly switchable wetting between superhydrophobicity and superhydrophilicity/underwater superoleophobicity properties induced by photo and heat stimuli. Commercially available PVDF and P25TiO2 as starting materials fabricated with a scaled-up electrospinning approach were applied to prepare 3D smart switchable PVDF-P25TiO2 nanotextile superwetted by both UV and solar light that is simply recovered by heat at a reasonable time. The superhydrophilic/underwater superoleophobic photo-induced nanotextile will act in "water-removing" mode in which water quickly passes through and the oil is blocked on the surface. An acceptable recycling, reusing, and superior antifouling and self-cleaning performance arising from a TiO2 photocatalytic effect makes it highly desired in a green scaled-up industry oily wastewater treatment technology. With these advantages, a large-scale industrial production process can be simply simulated by applying a conducting mesh-like collector substrate.
Collapse
|
9
|
Wang F, Dou L, Dai J, Li Y, Huang L, Si Y, Yu J, Ding B. In situ Synthesis of Biomimetic Silica Nanofibrous Aerogels with Temperature‐Invariant Superelasticity over One Million Compressions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001679] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fei Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Lvye Dou
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Jianwu Dai
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Yuyao Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Liqian Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Yang Si
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
- Innovation Center for Textile Science and TechnologyDonghua University Shanghai 200051 China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
- Innovation Center for Textile Science and TechnologyDonghua University Shanghai 200051 China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
- Innovation Center for Textile Science and TechnologyDonghua University Shanghai 200051 China
| |
Collapse
|
10
|
Wang F, Dou L, Dai J, Li Y, Huang L, Si Y, Yu J, Ding B. In situ Synthesis of Biomimetic Silica Nanofibrous Aerogels with Temperature‐Invariant Superelasticity over One Million Compressions. Angew Chem Int Ed Engl 2020; 59:8285-8292. [DOI: 10.1002/anie.202001679] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Indexed: 01/25/2023]
Affiliation(s)
- Fei Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Lvye Dou
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Jianwu Dai
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Yuyao Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Liqian Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
| | - Yang Si
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
- Innovation Center for Textile Science and TechnologyDonghua University Shanghai 200051 China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
- Innovation Center for Textile Science and TechnologyDonghua University Shanghai 200051 China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua University Shanghai 201620 China
- Innovation Center for Textile Science and TechnologyDonghua University Shanghai 200051 China
| |
Collapse
|
11
|
Bacterial cellulose sponges obtained with green cross-linkers for tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110740. [PMID: 32204048 DOI: 10.1016/j.msec.2020.110740] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 12/20/2019] [Accepted: 02/09/2020] [Indexed: 01/31/2023]
Abstract
Three-dimensional (3D) porous structures with controlled pore size and interconnected pores, good mechanical properties and biocompatibility are of great interest for tissue engineering. In this work we propose a new strategy to obtain highly porous 3D structures with improved properties using bacterial cellulose (BC) and eco-friendly additives and processes. Glucose, vanillin and citric acid were used as non-toxic and cheap cross-linkers and γ-aminopropyltriethoxysilane was used to partially replace the surface OH groups of cellulose with amino groups. The efficiency of grafting and cross-linking reactions was confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The morphological investigation of BC sponges revealed a multi-hierarchical organization after functionalization and cross-linking. Micro-computed tomography analysis showed 80-90% open porosity in modified BC sponges. The thermal and mechanical properties of the sponges were influenced by the cross-linker type and concentration. The strength-to-weight ratio of BC sponges cross-linked with glucose and citric acid was 150% and 120% higher compared to that of unmodified BC sponge. In vitro assays revealed that the modified BC sponges are non-cytotoxic and do not trigger an inflammatory response in macrophages. This study provides a simple and green method to obtain highly porous cellulose sponges with hierarchical design, biocompatibility and good mechanical properties.
Collapse
|
12
|
Jiang S, Gruen V, Rosenfeldt S, Schenk AS, Agarwal S, Xu ZK, Greiner A. Virtually Wall-Less Tubular Sponges as Compartmentalized Reaction Containers. RESEARCH 2019; 2019:4152536. [PMID: 31549062 PMCID: PMC6750054 DOI: 10.34133/2019/4152536] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 03/10/2019] [Indexed: 12/23/2022]
Abstract
Sponges are open cellular materials with numerous interesting features. However, the potential of compartmentalized sponges has not been explored although many new properties and applications could be envisioned. We found that compartmentalized fibrous ultraporous polymer sponges with superhydrophobic surfaces could be designed as virtually wall-less reaction containers. With this, for example, the efficient removal of CO2 from water and the controlled mineralization of calcium carbonate are possible. The high porosity (>99%) and superhydrophobicity make these sponges ideal candidates to hold alkanolamine solution for absorbing CO2 and exchange gas through the walls of the sponges. The tubular sponge exhibits a much higher evaporation rate than a glass tube with the same diameter due to the much larger contact area between water and air. Therefore, the spongy reaction container also possesses a much faster adsorption rate, smaller equilibration time and higher efficiency for CO2 adsorption than the glass tube container. In addition, these tubular sponges are also utilized to precipitate calcium carbonate by ammonium carbonate decomposition, which can control the deposition rates and products by tailoring the porosity and surface chemistry in the future. These new sponges provide an ideal basis for numerous new applications, for example, as breathable pipe lines for gas-liquid exchange, slag slurry carbonization, humidifier, and blood enricher.
Collapse
Affiliation(s)
- Shaohua Jiang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Viktoria Gruen
- Universität Bayreuth, Physical Chemistry, Universitätsstrasse 30, 95447 Bayreuth, Germany
| | - Sabine Rosenfeldt
- Universität Bayreuth, Physical Chemistry, Universitätsstrasse 30, 95447 Bayreuth, Germany
| | - Anna S Schenk
- Universität Bayreuth, Physical Chemistry, Universitätsstrasse 30, 95447 Bayreuth, Germany
| | - Seema Agarwal
- Universität Bayreuth, Macromolecular Chemistry, Bavarian Polymer Institute, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Zhi-Kang Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, 310027 Hangzhou, China
| | - Andreas Greiner
- Universität Bayreuth, Macromolecular Chemistry, Bavarian Polymer Institute, Universitätsstrasse 30, 95440 Bayreuth, Germany
| |
Collapse
|
13
|
Cao L, Si Y, Wu Y, Wang X, Yu J, Ding B. Ultralight, superelastic and bendable lashing-structured nanofibrous aerogels for effective sound absorption. NANOSCALE 2019; 11:2289-2298. [PMID: 30657513 DOI: 10.1039/c8nr09288e] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Low-density nanofibrous aerogels enable various applications but are often hindered by their fragile bendability and poor tensile strength. Herein, we report a strategy to design nanofibrous aerogels with robust bendability and superelastic property, which has been achieved by fabricating bamboo lashing-like structures through a freeze-drying method. The obtained reinforced nanofibrous aerogels (RNFAs) can maintain their structural integrity after 100 bending-recovery cycles at a bending angle of about 100°. Particularly, the RNFAs can completely revive from large deformation with a fast recovery speed (∼834 mm s-1). Significantly, the internal hierarchical porous structures and hydrophobicity of the materials provide them with ultralight properties (density <11 mg cm-3), efficient sound absorption capability (noise reduction coefficient of 0.41) and good moisture resistance; thus, they are promising options in cabins, vehicles, and the regulation of indoor reverberation.
Collapse
Affiliation(s)
- Leitao Cao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai 201620, China.
| | | | | | | | | | | |
Collapse
|
14
|
Pawłowska S, Kowalewski TA, Pierini F. Fibrous polymer nanomaterials for biomedical applications and their transport by fluids: an overview. SOFT MATTER 2018; 14:8421-8444. [PMID: 30339174 DOI: 10.1039/c8sm01269e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Over the past few decades, there has been strong interest in the development of new micro- and nanomaterials for biomedical applications. Their use in the form of capsules, particles or filaments suspended in body fluids is associated with conformational changes and hydrodynamic interactions responsible for their transport. The dynamics of fibres or other long objects in Poiseuille flow is one of the fundamental problems in a variety of biomedical contexts, such as mobility of proteins, dynamics of DNA or other biological polymers, cell movement, tissue engineering, and drug delivery. In this review, we discuss several important applications of micro and nanoobjects in this field and try to understand the problems of their transport in flow resulting from material-environment interactions in typical, crowded, and complex biological fluids. Our aim is to elucidate the relationship between the nano- and microscopic structures of elongated polymer particles and their flow properties, thus opening the possibility to design nanoobjects that can be efficiently transported by body fluids for targeted drug release or local tissue regeneration.
Collapse
Affiliation(s)
- S Pawłowska
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5B, 02-106 Warsaw, Poland.
| | | | | |
Collapse
|
15
|
Mader M, Jérôme V, Freitag R, Agarwal S, Greiner A. Ultraporous, Compressible, Wettable Polylactide/Polycaprolactone Sponges for Tissue Engineering. Biomacromolecules 2018; 19:1663-1673. [PMID: 29558804 DOI: 10.1021/acs.biomac.8b00434] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ultraporous, degradable sponges made of either polylactide or of blends of polylactide/poly(ε-caprolactone) are prepared by freeze-drying of dispersions of short electrospun fibers and subsequent thermal annealing. The sponges feature ultrahigh porosity (99.6%), a hierarchical cellular structure, and high reversible compressibility with fast recovery from deformation in the dry as well as in the wet state. The sponge properties depend on the fiber dispersion concentration and the annealing temperature. Sponge characteristics like fiber density (2.5-20 mg/cm3), size, shape, crystallinity, mechanical strength, wetability, and structural integrity are user adjustable. Cell culture experiments were successfully performed with Jurkat cells with Confocal Laser Scanning Microscopy and MTT staining showing rapid cell proliferation. Live/Dead staining demonstrated high viability of the seeded cells. The sponge characteristics and modifications investigated and presented here reveal that these sponges are highly promising for tissue engineering applications.
Collapse
Affiliation(s)
- Michael Mader
- Macromolecular Chemistry and Bavarian Polymer Institute , University of Bayreuth , Universitätsstrasse 30 , 95440 Bayreuth , Germany
| | - Valérie Jérôme
- Process Biotechnology , University of Bayreuth , 95440 , Bayreuth , Germany
| | - Ruth Freitag
- Process Biotechnology , University of Bayreuth , 95440 , Bayreuth , Germany
| | - Seema Agarwal
- Macromolecular Chemistry and Bavarian Polymer Institute , University of Bayreuth , Universitätsstrasse 30 , 95440 Bayreuth , Germany
| | - Andreas Greiner
- Macromolecular Chemistry and Bavarian Polymer Institute , University of Bayreuth , Universitätsstrasse 30 , 95440 Bayreuth , Germany
| |
Collapse
|
16
|
Deuber F, Mousavi S, Federer L, Hofer M, Adlhart C. Exploration of Ultralight Nanofiber Aerogels as Particle Filters: Capacity and Efficiency. ACS APPLIED MATERIALS & INTERFACES 2018; 10:9069-9076. [PMID: 29481046 DOI: 10.1021/acsami.8b00455] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ultralight nanofiber aerogels (NFAs) or nanofiber sponges are a truly three-dimensional derivative of the intrinsically flat electrospun nanofiber mats or membranes (NFMs). Here we investigated the potential of such materials for particle or aerosol filtration because particle filtration is a major application of NFMs. Ultralight NFAs were synthesized from electrospun nanofibers using a solid-templating technique. These materials had a tunable hierarchical cellular open-pore structure. We observed high filtration efficiencies of up to 99.999% at the most penetrating particle size. By tailoring the porosity of the NFAs through the processing parameters, we were able to adjust the number of permeated particles by a factor of 1000 and the pressure drop by a factor of 9. These NFAs acted as a deep-bed filter, and they were capable of handling high dust loadings without any indication of performance loss or an increase in the pressure drop. When the face velocity was increased from 0.75 to 6 cm s-1, the filtration efficiency remained high within a factor of 1.1-10. Both characteristics were in contrast to the behavior of two commercial NFM particle filters, which showed significant increases in the pressure drop with the filtration time as well as a susceptibility against high face velocities by a factor of 105.
Collapse
Affiliation(s)
- Fabian Deuber
- Institute of Chemistry and Biotechnology , Zurich University of Applied Sciences ZHAW , Einsiedlerstrasse 31 , 8820 Wädenswil , Switzerland
| | - Sara Mousavi
- Institute of Chemistry and Biotechnology , Zurich University of Applied Sciences ZHAW , Einsiedlerstrasse 31 , 8820 Wädenswil , Switzerland
- Department of Chemical Engineering , University of Sistan and Baluchestan , University Boulevard , P.O. Box 98155-987, Zahedan , Iran
| | - Lukas Federer
- Institute of Chemistry and Biotechnology , Zurich University of Applied Sciences ZHAW , Einsiedlerstrasse 31 , 8820 Wädenswil , Switzerland
| | - Marco Hofer
- Incident Response and Individual Protection Branch , Federal Office for Civil Protection , Labor Spiez, Austrasse , 3700 Spiez , Switzerland
| | - Christian Adlhart
- Institute of Chemistry and Biotechnology , Zurich University of Applied Sciences ZHAW , Einsiedlerstrasse 31 , 8820 Wädenswil , Switzerland
| |
Collapse
|
17
|
|
18
|
Jiang S, Helfricht N, Papastavrou G, Greiner A, Agarwal S. Low-Density Self-Assembled Poly(N-Isopropyl Acrylamide) Sponges with Ultrahigh and Extremely Fast Water Uptake and Release. Macromol Rapid Commun 2018; 39:e1700838. [DOI: 10.1002/marc.201700838] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/20/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Shaohua Jiang
- Macromolecular Chemistry; Bavarian Polymer Institute; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
- College of Materials Science and Engineering; Nanjing Forestry University; Nanjing 210037 China
| | - Nicolas Helfricht
- Physical Chemistry II and Bavarian Polymer Institute; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| | - Georg Papastavrou
- Physical Chemistry II and Bavarian Polymer Institute; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| | - Andreas Greiner
- Macromolecular Chemistry; Bavarian Polymer Institute; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| | - Seema Agarwal
- Macromolecular Chemistry; Bavarian Polymer Institute; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| |
Collapse
|
19
|
Jiang S, Chen Y, Duan G, Mei C, Greiner A, Agarwal S. Electrospun nanofiber reinforced composites: a review. Polym Chem 2018. [DOI: 10.1039/c8py00378e] [Citation(s) in RCA: 357] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
High performance electrospun nanofibers could be used to fabricate nanofiber reinforced composites.
Collapse
Affiliation(s)
- Shaohua Jiang
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Yiming Chen
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Gaigai Duan
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Changtong Mei
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Andreas Greiner
- University of Bayreuth
- Faculty of Biology
- Chemistry and Earth Sciences
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces
- Germany
| | - Seema Agarwal
- University of Bayreuth
- Faculty of Biology
- Chemistry and Earth Sciences
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces
- Germany
| |
Collapse
|
20
|
Xu T, Wang Z, Ding Y, Xu W, Wu W, Zhu Z, Fong H. Ultralight electrospun cellulose sponge with super-high capacity on absorption of organic compounds. Carbohydr Polym 2018; 179:164-172. [DOI: 10.1016/j.carbpol.2017.09.086] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/13/2017] [Accepted: 09/25/2017] [Indexed: 12/16/2022]
|
21
|
Jiang S, Agarwal S, Greiner A. Offenzellige Schwämme mit niedrigen Dichten als Funktionsmaterialien. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700684] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shaohua Jiang
- Makromolekulare Chemie II, Bayerisches Polymerinstitut; Universität Bayreuth; Universitätsstraße 30 95440 Bayreuth Deutschland
- College of Materials Science and Engineering; Nanjing Forestry University; Nanjing 210037 China
| | - Seema Agarwal
- Makromolekulare Chemie II, Bayerisches Polymerinstitut; Universität Bayreuth; Universitätsstraße 30 95440 Bayreuth Deutschland
| | - Andreas Greiner
- Makromolekulare Chemie II, Bayerisches Polymerinstitut; Universität Bayreuth; Universitätsstraße 30 95440 Bayreuth Deutschland
| |
Collapse
|
22
|
Abstract
Low-density macroporous sponges with densities less than 100 mg cm-3 are both a challenge and an opportunity for advanced chemistry and material science. The challenge lies in the precise preparation of the sponges with property combinations that lead to novel applications. Bottom-up and top-down chemical and engineering methods for the preparation of sponges are a major focus of this Review, with an emphasis on carbon and polymer materials. The light weight, sustainability, breathability, special wetting characteristics, large mass transfer, mechanical stability, and large pore volume are typical characteristics of sponges made of advanced materials and could lead to novel applications. Some selected sponge properties and potential applications are discussed.
Collapse
Affiliation(s)
- Shaohua Jiang
- Macromolecular Chemistry II, Department of Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.,College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Seema Agarwal
- Macromolecular Chemistry II, Department of Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| | - Andreas Greiner
- Macromolecular Chemistry II, Department of Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| |
Collapse
|
23
|
Jiang S, Uch B, Agarwal S, Greiner A. Ultralight, Thermally Insulating, Compressible Polyimide Fiber Assembled Sponges. ACS APPLIED MATERIALS & INTERFACES 2017; 9:32308-32315. [PMID: 28840720 DOI: 10.1021/acsami.7b11045] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tunable density, thermally and mechanically stable, elastic, and thermally insulating sponges are required for demanding applications. Hierarchically structured sponges with bimodal interconnected pores, porosity more than 99%, and tunable densities (between 7.6 and 10.1 mg/cm3) are reported using polyimide (PI) as high temperature stable polymer. The sponges are made by freeze-drying a dispersion of short PI fibers and precursor polymer, poly(amic acid) (PAA). The concept of "self-gluing" the fibrous network skeleton of PI during sponge formation was applied to achieve mechanical stability without sacrificing the thermal properties. The sponges showed initial degradation above 400 and 500 °C in air and nitrogen, respectively. They have low thermal conductivity of 0.026 W/mK and thermal diffusivity of 1.009 mm2/s for a density of 10.1 mg/cm3. The sponges are compressible for at least 10 000 cycles and good thermal insulators even at high compressions. These fibrous PI sponges are promising candidates for potential applications in thermal insulation, lightweight construction, high-temperature filtration, sensors, and catalyst carrier for high-temperature reactions.
Collapse
Affiliation(s)
- Shaohua Jiang
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Bianca Uch
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Seema Agarwal
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Andreas Greiner
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstraße 30, 95440 Bayreuth, Germany
| |
Collapse
|
24
|
Duan G, Bagheri AR, Jiang S, Golenser J, Agarwal S, Greiner A. Exploration of Macroporous Polymeric Sponges As Drug Carriers. Biomacromolecules 2017; 18:3215-3221. [PMID: 28820944 DOI: 10.1021/acs.biomac.7b00852] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Achieving high drug loading capacity and controlling drug delivery are two main challenges related to drug carriers. In this study, polymeric macroporous sponges with very high pore volume and large porosity are introduced as a new-type of drug carrier. Due to the high pore volume (285 and 166 cm3/g for the sponges with densities of 3.5 and 6.0 mg/cm3, respectively), the sponges exhibit very high drug loading capacities with average values of 1870 ± 114 and 2697 ± 73 mg/g in the present study, which is much higher than the meso and microporous drug carriers (<1500 mg/g). In order to control the release profiles, an additional poly(p-xylylene) (PPX) coating was deposited by chemical vapor deposition on the drug loaded sponge. Consequently, Artemisone (ART) release in the aqueous medium could be retarded, depending on the density of the sponge and the thickness of the coating. In future, the new 3D polymeric sponges would be highly beneficial as drug carriers for the programmed release of drugs for treatment of chronic diseases.
Collapse
Affiliation(s)
- Gaigai Duan
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Amir Reza Bagheri
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Shaohua Jiang
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Jacob Golenser
- Department of Microbiology and Molecular Genetics, The Kuvin Centre for the Study of Infectious and Tropical Diseases, The Hebrew University of Jerusalem , Jerusalem, Israel
| | - Seema Agarwal
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Andreas Greiner
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth , Universitätsstrasse 30, 95440 Bayreuth, Germany
| |
Collapse
|
25
|
Moss T, Paulus IE, Raps D, Altstädt V, Greiner A. Ultralight sponges of poly(para-xylylene) by template-assisted chemical vapour deposition. E-POLYMERS 2017. [DOI: 10.1515/epoly-2016-0329] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract:Particle foams and open cell sponges play nowadays an important role in academia and industrial research. The fabrication of new high-performance foams is one of the challenges. Until now, it is impossible to visualise the quality of particle foams, and the quantification is only possible with expensive analytical methods like scanning electron microscopy. In this work, we demonstrate a simple method for the visualisation of void sizes and defects inside particle foams on the basis of expanded polystyrene. The concept was transferred to porous materials, which work as templates for the formation of ultralight poly(para-xylylene) foams with stunning properties.
Collapse
Affiliation(s)
- Tobias Moss
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Bayreuth, Germany
| | - Ilka E. Paulus
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Bayreuth, Germany
| | - Daniel Raps
- Polymer Engineering University of Bayreuth, Bayreuth, Germany
| | - Volker Altstädt
- Polymer Engineering University of Bayreuth, Bayreuth, Germany
| | - Andreas Greiner
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| |
Collapse
|
26
|
Jiang S, Duan G, Kuhn U, Mörl M, Altstädt V, Yarin AL, Greiner A. Spongy Gels by a Top-Down Approach from Polymer Fibrous Sponges. Angew Chem Int Ed Engl 2017; 56:3285-3288. [PMID: 28194915 PMCID: PMC5363351 DOI: 10.1002/anie.201611787] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 01/18/2017] [Indexed: 01/22/2023]
Abstract
Ultralight cellular sponges offer a unique set of properties. We show here that solvent uptake by these sponges results in new gel-like materials, which we term spongy gels. The appearance of the spongy gels is very similar to classic organogels. Usually, organogels are formed by a bottom-up process. In contrast, the spongy gels are formed by a top-down approach that offers numerous advantages for the design of their properties, reproducibility, and stability. The sponges themselves represent the scaffold of a gel that could be filled with a solvent, and thereby form a mechanically stable gel-like material. The spongy gels are independent of a time-consuming or otherwise demanding in situ scaffold formation. As solvent evaporation from gels is a concern for various applications, we also studied solvent evaporation of wetting and non-wetting liquids dispersed in the sponge.
Collapse
Affiliation(s)
- Shaohua Jiang
- Macromolecular ChemistryBavarian Polymer InstituteUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
- College of Materials Science and EngineeringNanjing Forest UniversityNanjing210037China
| | - Gaigai Duan
- Macromolecular ChemistryBavarian Polymer InstituteUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Ute Kuhn
- Polymer EngineeringUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Michaela Mörl
- Polymer EngineeringUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Volker Altstädt
- Polymer EngineeringUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Alexander L. Yarin
- Department of Mechanical and Industrial EngineeringUniversity of Illinois at Chicago842 W. Taylor StreetChicagoIL60607USA
| | - Andreas Greiner
- Macromolecular ChemistryBavarian Polymer InstituteUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| |
Collapse
|
27
|
Jiang S, Duan G, Kuhn U, Mörl M, Altstädt V, Yarin AL, Greiner A. Spongy Gels by a Top-Down Approach from Polymer Fibrous Sponges. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611787] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shaohua Jiang
- Macromolecular Chemistry; Bavarian Polymer Institute; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
- College of Materials Science and Engineering; Nanjing Forest University; Nanjing 210037 China
| | - Gaigai Duan
- Macromolecular Chemistry; Bavarian Polymer Institute; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Ute Kuhn
- Polymer Engineering; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Michaela Mörl
- Polymer Engineering; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Volker Altstädt
- Polymer Engineering; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Alexander L. Yarin
- Department of Mechanical and Industrial Engineering; University of Illinois at Chicago; 842 W. Taylor Street Chicago IL 60607 USA
| | - Andreas Greiner
- Macromolecular Chemistry; Bavarian Polymer Institute; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| |
Collapse
|
28
|
Duan G, Koehn-Serrano M, Greiner A. Highly Efficient Reusable Sponge-Type Catalyst Carriers Based on Short Electrospun Fibers. Macromol Rapid Commun 2016; 38. [DOI: 10.1002/marc.201600511] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 09/11/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Gaigai Duan
- Macromolecular Chemistry; Bavarian Polymer Institute; University of Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Melissa Koehn-Serrano
- Macromolecular Chemistry; Bavarian Polymer Institute; University of Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Andreas Greiner
- Macromolecular Chemistry; Bavarian Polymer Institute; University of Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| |
Collapse
|
29
|
Deuber F, Mousavi S, Hofer M, Adlhart C. Tailoring Pore Structure of Ultralight Electrospun Sponges by Solid Templating. ChemistrySelect 2016. [DOI: 10.1002/slct.201601084] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Fabian Deuber
- Institute of Chemistry and Biotechnology; Zurich University of Applied Sciences ZHAW; 8820 Wädenswil Switzerland
| | - Sara Mousavi
- Institute of Chemistry and Biotechnology; Zurich University of Applied Sciences ZHAW; 8820 Wädenswil Switzerland
- Department of Chemical Engineering; University of Sistan and Baluchestan; Blvd. Daneshgah Zahedan Iran
| | - Marco Hofer
- Incident Response and Individual Protection Branch; Federal Office for Civil Protection, Labor Spiez; Austrasse 3700 Spiez Switzerland
| | - Christian Adlhart
- Institute of Chemistry and Biotechnology; Zurich University of Applied Sciences ZHAW; 8820 Wädenswil Switzerland
| |
Collapse
|