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Waheed H, Mehmood CT, Yang Y, Tan W, Fu S, Xiao Y. Dynamics of biofilms on different polymeric membranes – A comparative study using five physiologically and genetically distinct bacteria. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120000] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Effects of Room Temperature Stretching and Annealing on the Crystallization Behavior and Performance of Polyvinylidene Fluoride Hollow Fiber Membranes. MEMBRANES 2020; 10:membranes10030038. [PMID: 32121401 PMCID: PMC7142550 DOI: 10.3390/membranes10030038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 02/28/2020] [Accepted: 02/28/2020] [Indexed: 12/30/2022]
Abstract
A treatment consisting of room temperature stretching and subsequent annealing was utilized to regulate the morphology and performance of polyvinylidene fluoride (PVDF) hollow fiber membranes. The effects of stretching ratios and stretching rates on the crystallization behavior, morphology, and performance of the PVDF membranes were investigated. The results showed that the treatment resulted in generation of the β crystalline phase PVDF and increased the crystallinity of the membrane materials. The treatment also brought about the orientation of the membrane pores along the stretching direction and led to an increase in the mean pore size of the membranes. In addition, as the stretching ratio increased, the tensile strength and permeation flux were improved while the elongation at break was depressed. However, compared to the stretching ratio, the stretching rate had less influence on the membrane structure and performance. In general, as the stretching ratio was 50% and the stretching rate was 20 mm/min, the tensile strength was increased by 36% to 7.47 MPa, and the pure water flux was as high as 776.28 L/(m2·h·0.1bar), while the mean pore size was not changed significantly. This research proved that the room temperature stretching and subsequent annealing was a simple but effective method for regulating the structure and the performance of the PVDF porous membranes.
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Elele E, Shen Y, Tang J, Lei Q, Khusid B, Tkacik G, Carbrello C. Mechanical properties of polymeric microfiltration membranes. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117351] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Medina-Gonzalez Y, Lasseuguette E, Rouch JC, Remigy JC. Improving PVDF Hollow Fiber Membranes for CO2Gas Capture. SEP SCI TECHNOL 2012. [DOI: 10.1080/01496395.2012.658942] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ahmad A, Low S, Shukor SA, Ismail A. Optimization of membrane performance by thermal-mechanical stretching process using responses surface methodology (RSM). Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2008.11.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ahmad AL, Low SC, Shukor SRA, Ismail A. Morphological and Thermal-Mechanical Stretching Properties on Polymeric Lateral Flow Nitrocellulose Membrane. Ind Eng Chem Res 2009. [DOI: 10.1021/ie801282t] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. L. Ahmad
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Penang, Malaysia, and Institute for Research in Molecular Medicine, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - S. C. Low
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Penang, Malaysia, and Institute for Research in Molecular Medicine, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - S. R. Abd. Shukor
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Penang, Malaysia, and Institute for Research in Molecular Medicine, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - A. Ismail
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Penang, Malaysia, and Institute for Research in Molecular Medicine, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
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Chang WY, Fang TH, Lin YC. Thermomechanical and optical characteristics of stretched polyvinylidene fluoride. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/polb.21429] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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