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Xu Q, Qiu R, Bai Z, Ma J, Fan Q, Li Y, Taha S, Ramzan Z, Li J. Zein‐based microcapsule for vanillin sustained release. J Appl Polym Sci 2021. [DOI: 10.1002/app.51217] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qunna Xu
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Ruijie Qiu
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Zhongxue Bai
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Jianzhong Ma
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Qianqian Fan
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
| | - Yun Li
- College of Chemistry and Chemical Engineering Yantai University Yantai China
| | - Siddiqui Taha
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
| | - Zaki Ramzan
- College of Electronic Information and Artificial Intelligence Shaanxi University of Science & Technology Xi'an China
| | - Jiaojiao Li
- College of Bioresources Chemical and Materials Engineering Shaanxi University of Science & Technology Xi'an China
- Key Laboratory of Leather Cleaner Production China National Light Industry Xi'an China
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Hou D, Zhang S, Chen X, Song R, Zhang D, Yao A, Sun J, Wang W, Sun L, Chen B, Liu Z, Wang L. Decimeter-Scale Atomically Thin Graphene Membranes for Gas-Liquid Separation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:10328-10335. [PMID: 33599473 DOI: 10.1021/acsami.0c23013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Graphene holds great potential for fabricating ultrathin selective membranes possessing high permeability without compromising selectivity and has attracted intensive interest in developing high-performance separation membranes for desalination, natural gas purification, hemodialysis, distillation, and other gas-liquid separation. However, the scalable and cost-effective synthesis of nanoporous graphene membranes, especially designing a method to produce an appropriate porous polymer substrate, remains very challenging. Here, we report a facile route to fabricate decimeter-scale (∼15 × 10 cm2) nanoporous atomically thin membranes (NATMs) via the direct casting of the porous polymer substrate onto graphene, which was produced by chemical vapor deposition (CVD). After the vapor-induced phase-inversion process under proper experimental conditions (60 °C and 60% humidity), the flexible nanoporous polymer substrate was formed. The resultant skin-free polymer substrate, which had the proper pore size and a uniform spongelike structure, provided enough mechanical support without reducing the permeance of the NATMs. It was demonstrated that after creating nanopores by the O2 plasma treatment, the NATMs were salt-resistant and simultaneously showed 3-5 times higher gas (CO2) permeance than the state-of-the-art commercial polymeric membranes. Therefore, our work provides guidance for the technological developments of graphene-based membranes and bridges the gap between the laboratory-scale "proof-of-concept" and the practical applications of NATMs in the industry.
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Affiliation(s)
- Dandan Hou
- Institute of microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
- Beijing Graphene Institute, Beijing 100095, China
| | - Shengping Zhang
- Institute of microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Peking University, Beijing 100871, China
- Beijing Graphene Institute, Beijing 100095, China
| | - Xiaobo Chen
- Institute of microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
| | - Ruiyang Song
- Institute of microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
| | - Dongxu Zhang
- Beijing Graphene Institute, Beijing 100095, China
| | - Ayan Yao
- Beijing Graphene Institute, Beijing 100095, China
| | - Jiayue Sun
- Beijing Graphene Institute, Beijing 100095, China
| | - Wenxuan Wang
- Beijing Graphene Institute, Beijing 100095, China
| | - Luzhao Sun
- Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Peking University, Beijing 100871, China
- Beijing Graphene Institute, Beijing 100095, China
| | - Buhang Chen
- Beijing Graphene Institute, Beijing 100095, China
| | - Zhongfan Liu
- Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Peking University, Beijing 100871, China
- Beijing Graphene Institute, Beijing 100095, China
| | - Luda Wang
- Institute of microelectronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Peking University, Beijing 100871, China
- Beijing Graphene Institute, Beijing 100095, China
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Abstract
In this study we explored the implementation of the vapor induced phase separation (VIPS) to produce cellulose acetate microcapsules for the encapsulation of a complex mix of fragrances. VIPS is a technique used for membrane preparation, but barely mentioned for microencapsulation. We compared the products from VIPS and a more common microencapsulation process, the immersion precipitation technique (IPS). The capsules prepared via VIPS show a core-shell structure with a thin polymeric shell surrounding the internally empty space, conversely to those produced via IPS, showing an incomplete spherical morphology. This can be attributed to a better control of the precipitation rate of the encapsulation material in the non-solvent thanks to the longer exposition time to the vapor. The activity and encapsulation efficiency of the capsules, obtained through TGA analysis, reached a maximum of ≈75% and ≈90%, respectively. Moreover, a growing trend between the initial active concentration and the encapsulation efficiency is noticed.
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Trojanowska A, Pazos-Perez N, Panisello C, Gumi T, Guerrini L, Alvarez-Puebla RA. Plasmonic-polymer hybrid hollow microbeads for surface-enhanced Raman scattering (SERS) ultradetection. J Colloid Interface Sci 2015; 460:128-34. [PMID: 26319329 DOI: 10.1016/j.jcis.2015.08.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 08/20/2015] [Accepted: 08/22/2015] [Indexed: 11/20/2022]
Abstract
Hybrid composites are known to add functionality to plasmonic nanomaterials. Although these substrates can be produced by common synthetic methods, the percentage of metal loaded into the functional material is usually small. Herein, we exploit a phase inversion precipitation method to incorporate large amounts of silver nanoparticles inside the polymeric matrix of polysulfone microbeads. The composite material combines the high SERS activity resulting from the plasmonic coupling of highly interacting nanoparticles and the ability to accumulate analytes of the polysulfone porous support. This allows for the quantitative SERS detection down to the nanomolar level, with a liner response that extends over an impressive concentration range of five orders of magnitude.
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Affiliation(s)
- Anna Trojanowska
- Departament d'Enginyeria Química, Escola Tècnica Superior d'Enginyeria Química, Universitat Rovira i Virgili, Av. Països Catalans, 26, 43007 Tarragona, Spain; Centro de Tecnologia Quimica de Cataluña and Universitat Rovira i Virgili, Carrer de Marcel•lí Domingo s/n, 43007 Tarragona, Spain
| | - Nicolas Pazos-Perez
- Centro de Tecnologia Quimica de Cataluña and Universitat Rovira i Virgili, Carrer de Marcel•lí Domingo s/n, 43007 Tarragona, Spain; Medcom Advance SA, Viladecans Business Park - Edificio Brasil, Bertran i Musitu 83-85, 08840 Viladecans - Barcelona, Spain
| | - Cinta Panisello
- Centro de Tecnologia Quimica de Cataluña and Universitat Rovira i Virgili, Carrer de Marcel•lí Domingo s/n, 43007 Tarragona, Spain
| | - Tania Gumi
- Departament d'Enginyeria Química, Escola Tècnica Superior d'Enginyeria Química, Universitat Rovira i Virgili, Av. Països Catalans, 26, 43007 Tarragona, Spain
| | - Luca Guerrini
- Centro de Tecnologia Quimica de Cataluña and Universitat Rovira i Virgili, Carrer de Marcel•lí Domingo s/n, 43007 Tarragona, Spain; Medcom Advance SA, Viladecans Business Park - Edificio Brasil, Bertran i Musitu 83-85, 08840 Viladecans - Barcelona, Spain.
| | - Ramon A Alvarez-Puebla
- Centro de Tecnologia Quimica de Cataluña and Universitat Rovira i Virgili, Carrer de Marcel•lí Domingo s/n, 43007 Tarragona, Spain; Medcom Advance SA, Viladecans Business Park - Edificio Brasil, Bertran i Musitu 83-85, 08840 Viladecans - Barcelona, Spain; ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain.
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6
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Ma B, Hansen JH, Hvilsted S, Skov AL. Control of PDMS crosslinking by encapsulating a hydride crosslinker in a PMMA microcapsule. RSC Adv 2014. [DOI: 10.1039/c4ra07513g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic diagram of the PDMS network around the microcapsule that leads to the trapping of HMS-301 in the range 0.8 < r < 1.4.
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Affiliation(s)
- Baoguang Ma
- Danish Polymer Centre
- Department of Chemical and Biochemical Engineering
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | | | - Søren Hvilsted
- Danish Polymer Centre
- Department of Chemical and Biochemical Engineering
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
| | - Anne Ladegaard Skov
- Danish Polymer Centre
- Department of Chemical and Biochemical Engineering
- Technical University of Denmark
- DK-2800 Kgs. Lyngby, Denmark
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Panisello C, Peña B, Gilabert Oriol G, Constantí M, Gumí T, Garcia-Valls R. Polysulfone/Vanillin Microcapsules for Antibacterial and Aromatic Finishing of Fabrics. Ind Eng Chem Res 2013. [DOI: 10.1021/ie3036096] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cinta Panisello
- Departament d’Enginyeria
Química, Universitat Rovira i Virgili, Av. Països Catalans,
26, 43007 Tarragona, Spain
| | - Brisa Peña
- Departament d’Enginyeria
Química, Universitat Rovira i Virgili, Av. Països Catalans,
26, 43007 Tarragona, Spain
| | - Guillem Gilabert Oriol
- Departament d’Enginyeria
Química, Universitat Rovira i Virgili, Av. Països Catalans,
26, 43007 Tarragona, Spain
| | - Magda Constantí
- Departament d’Enginyeria
Química, Universitat Rovira i Virgili, Av. Països Catalans,
26, 43007 Tarragona, Spain
| | - Tània Gumí
- Departament d’Enginyeria
Química, Universitat Rovira i Virgili, Av. Països Catalans,
26, 43007 Tarragona, Spain
| | - Ricard Garcia-Valls
- Departament d’Enginyeria
Química, Universitat Rovira i Virgili, Av. Països Catalans,
26, 43007 Tarragona, Spain
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