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Kim K, Lee H, Park HS, Song H, Kim S. Surface modification of polypropylene hollow fiber membranes using fluorosilane for CO 2 absorption in a gas-liquid membrane contactor. Heliyon 2023; 9:e19829. [PMID: 37809965 PMCID: PMC10559216 DOI: 10.1016/j.heliyon.2023.e19829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/15/2023] [Accepted: 09/03/2023] [Indexed: 10/10/2023] Open
Abstract
Conventional methods for improving the hydrophobicity of polypropylene (PP) membranes to prevent wetting phenomena require complex pretreatment procedures in order to activate the surface for enabling the reaction with fluorosilane (FS)-based materials. This study successfully prepared PP membrane contactors with enhanced hydrophobicity through a simple single-step dip-coating method using perfluoroether-grafted silanes for CO2 capture. The FS coating layer on the PP membrane surface was confirmed through ATR-FTIR spectroscopy, XPS, FE-SEM, and EDS. Furthermore, the evaluation of the CO2 absorption performance and long-term stability of the FS-coated PP membrane according to the variation of the gas flow rate (50, 100, 200, 400, and 800 mL/min) confirmed the superior chemical stability and durability of our membranes to those of previously reported hydrophobic membranes. The as-prepared FS-coated PP membrane expands the application scope of gas-liquid membrane contactors for CO2 capture from the flue gas of coal-fired power plants.
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Affiliation(s)
- Kwanghwi Kim
- Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan, 44413, South Korea
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Heejun Lee
- Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan, 44413, South Korea
| | - Hyun Sic Park
- Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan, 44413, South Korea
| | - Hojun Song
- Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan, 44413, South Korea
| | - Suhan Kim
- Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan, 44413, South Korea
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Long H, Xu H, Shaoyu J, Jiang T, Zhuang W, Li M, Jin J, Ji L, Ying H, Zhu C. High-Strength Bio-Degradable Polymer Foams with Stable High Volume-Expansion Ratio Using Chain Extension and Green Supercritical Mixed-Gas Foaming. Polymers (Basel) 2023; 15:polym15040895. [PMID: 36850179 PMCID: PMC9963428 DOI: 10.3390/polym15040895] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/29/2023] [Accepted: 02/02/2023] [Indexed: 02/15/2023] Open
Abstract
The preparation of biodegradable polymer foams with a stable high volume-expansion ratio (VER) is challenging. For example, poly (butylene adipate-co-terephthalate) (PBAT) foams have a low melt strength and high shrinkage. In this study, polylactic acid (PLA), which has a high VER and crystallinity, was added to PBAT to reduce shrinkage during the supercritical molded-bead foaming process. The epoxy chain extender ADR4368 was used both as a chain extender and a compatibilizer to mitigate the linear chain structure and incompatibility and improve the foamability of PBAT. The branched-chain structure increased the energy-storage modulus (G') and complex viscosity (η*), which are the key factors for the growth of cells, by 1-2 orders of magnitude. Subsequently, we innovatively used the CO2 and N2 composite gas method. The foam-shrinkage performance was further inhibited; the final foam had a VER of 23.39 and a stable cell was obtained. Finally, after steam forming, the results showed that the mechanical strength of the PBAT/PLA blended composite foam was considerably improved by the addition of PLA. The compressive strength (50%), bending strength, and fracture load by bending reached 270.23 kPa, 0.36 MPa, and 23.32 N, respectively. This study provides a potential strategy for the development of PBAT-based foam packaging materials with stable cell structure, high VER, and excellent mechanical strength.
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Affiliation(s)
- Haoyu Long
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Hongsen Xu
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Jingwen Shaoyu
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Tianchen Jiang
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Wei Zhuang
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- National Engineering Technique Research Center for Biotechnique, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing 210009, China
- Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- Correspondence: (W.Z.); (C.Z.)
| | - Ming Li
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- National Engineering Technique Research Center for Biotechnique, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing 210009, China
| | - Junyang Jin
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Lei Ji
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- National Engineering Technique Research Center for Biotechnique, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing 210009, China
- Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Hanjie Ying
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- National Engineering Technique Research Center for Biotechnique, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing 210009, China
- Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
| | - Chenjie Zhu
- College of Biotechnique and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- National Engineering Technique Research Center for Biotechnique, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing 210009, China
- Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing 211816, China
- Correspondence: (W.Z.); (C.Z.)
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Tammaro D, Ballesteros A, Walker C, Reichelt N, Trommsdorff U. Expanded Beads of High Melt Strength Polypropylene Moldable at Low Steam Pressure by Foam Extrusion. Polymers (Basel) 2022; 14:polym14010205. [PMID: 35012225 PMCID: PMC8747224 DOI: 10.3390/polym14010205] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 02/01/2023] Open
Abstract
We explore the foam extrusion of expanded polypropylene with a long chain branched random co-polypropylene to make its production process simpler and cheaper. The results show that the presence of long chain branches infer high melt strength and, hence, a wide foamability window. We explored the entire window of foaming conditions (namely, temperature and pressure) by means of an ad-hoc extrusion pilot line design. It is shown that the density of the beads can be varied from 20 to 100 kg/m3 using CO2 and isobutane as a blowing agent. The foamed beads were molded by steam-chest molding using moderate steam pressures of 0.3 to 0.35 MPa independently of the closed cell content. A characterization of the mechanical properties was performed on the molded parts. The steam molding pressure for sintering expanded polypropylene beads with a long chain branched random co-polypropylene is lower than the one usually needed for standard polypropylene beads by extrusion. The energy saving for the sintering makes the entire manufacturing processes cost efficient and can trigger new applications.
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Affiliation(s)
- Daniele Tammaro
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le Tecchio 80, 8008 Napoli, Italy
- Correspondence:
| | - Alberto Ballesteros
- Sulzer Chemtech, Else-Züblinstrasse 11, 8404 Winterthur, Switzerland; (A.B.); (C.W.); (U.T.)
| | - Claudio Walker
- Sulzer Chemtech, Else-Züblinstrasse 11, 8404 Winterthur, Switzerland; (A.B.); (C.W.); (U.T.)
| | - Norbert Reichelt
- Borealis Polyolefine GmbH, St.-Peter-Strasse 25, 4021 Linz, Austria;
| | - Ulla Trommsdorff
- Sulzer Chemtech, Else-Züblinstrasse 11, 8404 Winterthur, Switzerland; (A.B.); (C.W.); (U.T.)
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Zhang R, Hu H, Chen H, Li S, Ying C, Huang S, Liu Q, Fu X, Hu S, Wong C. Simultaneous improvement of thermal conductivity and mechanical properties for mechanically mixed ABS/h‐BN composites by using small amounts of hyperbranched polymer additives. J Appl Polym Sci 2020. [DOI: 10.1002/app.49186] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Rong Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Hailong Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Hai Chen
- Anhui Jihong Polymer Technology Co., Ltd Hefei China
| | - Siqi Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Cheng Ying
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Shuai Huang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Qingting Liu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Xudong Fu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Shengfei Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light‐weight Materials and ProcessingHubei University of Technology Wuhan China
| | - Ching‐Ping Wong
- School of Materials Science and EngineeringGeorgia Institute of Technology Atlanta Georgia USA
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