Evaluation of polyphenylene sulfide by surface thermodynamics approaches: Comparison with common polymers

Özbay, Salih

doi:10.1002/app.52082

Cited by 7 publications

(3 citation statements)

References 57 publications

(112 reference statements)

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“…Moreover, as the PDMS concentration increased in the PDMS@ZIF‐8/PVDF HFCMs, the ethanol contact angles also increased, mainly due to the decreased surface roughness of the membrane (Figure 4). 47 The surface free energy of the PDMS@ZIF‐8/PVDF HFCMs and PDMS/PVDF membrane was calculated using the Owens‐Wendt geometric mean equation 48 . The surface free energy of PDMS‐1@ZIF‐8/PVDF (12.7 mN m −1 ) was lower than that of the PDMS/PVDF membrane (15.3 mN m −1 ; Figure S3).…”

Section: Resultsmentioning

confidence: 99%

“…47 The surface free energy of the PDMS@ZIF-8/ PVDF HFCMs and PDMS/PVDF membrane was calculated using the Owens-Wendt geometric mean equation. 48 The surface free energy of PDMS-1@ZIF-8/PVDF (12.7 mN m À1 ) was lower than that of the PDMS/PVDF membrane (15.3 mN m À1 ; Figure S3). The lower surface free energy enhanced membrane hydrophobicity, thus improving membrane selectivity.…”

Section: Contact Angles and Solvent Uptake Of The Membranesmentioning

confidence: 95%

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Fabrication of highly permeable PDMS@ZIF‐8/PVDF hollow fiber composite membrane in module for ethanol‐water separation

et al. 2023

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The construction of high‐performance MOF‐based hollow fiber composite membrane (HFCM) modules is a significant, yet challenging task for the biofuel production industry. In this study, a novel approach was taken to fabricate PDMS@ZIF‐8/PVDF HFCMs in modules through a facile ZIF‐8 self‐crystallization synthesis followed by pressure‐assisted PDMS infusion for pervaporation ethanol‐water separation. The as‐prepared HFCMs exhibited an ultrathin separation layer (thickness, 370 ± 35 nm), which was achieved through precise regulation of the ZIF‐8 membrane and defect repair by PDMS infusion. Moreover, the strategy utilized in this study resolved the defect issues arising from MOF agglomeration in conventional composite membranes. Impressively, at the optimal packing density, the prepared membrane demonstrated a remarkable ethanol flux (1.11 kg m−2 h−1) with an PSI value (26.59 kg m−2 h−1) and showed promising long‐term stability for the pervaporation of 5 wt% ethanol aqueous solution at 40°C.

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Section: Resultsmentioning

confidence: 99%

Section: Contact Angles and Solvent Uptake Of The Membranesmentioning

confidence: 95%

Fabrication of highly permeable PDMS@ZIF‐8/PVDF hollow fiber composite membrane in module for ethanol‐water separation

et al. 2023

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“…In addition, additives such as CaCO3 filling reduce the product cost, increase the mechanical strength, and decrease the thermal conductivity unless used excessively [17,18]. The wettability behavior of materials is one of the most critical factors in determining their usage areas [19,20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Wettability Behavior and Surface Topology of PVC Materials Used in Outdoor Applications

Çakır,

Karhan,

Issı

2024

Politeknik Dergisi

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The wettability behavior is crucial in determining the materials' applications and durability. To assess the wettability behavior, the measurement of contact angle is utilized. In this study, commercially produced PVC profiles were sampled, and a contact angle measurement system, consisting of both software and hardware, was developed to measure the contact angle of the samples. The contact angle measurements were conducted by placing approximately 20 µl of distilled water on the samples, and each sample was measured six times, with the average being taken. A device for measuring roughness was used to determine the surface roughness of the samples, and the average roughness value was obtained from four different parts of each sample. Additionally, SEM images of each sample were taken to conduct surface and structural analyses. The correlation between roughness, SEM image analysis results, and contact angle was examined in the research study. Moreover, the wettability behavior of PVC materials was analyzed by evaluating the impact of the elements in their structure and their homogeneity on the contact angle values.

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Enhancement of the hydrophobicity and oleophobicity of a polyurethane coating using a fluorine‐free polyfarnesene‐based polyol

Shiraki

2023

J of Applied Polymer Sci

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The development of hydrophobic and oleophobic surfaces on materials has attracted significant attention in various research fields. Fluoropolymers, which possess low surface energy and are both highly hydrophobic and oleophobic in nature, are widely used to enhance the liquid repellency of materials. However, during fluoropolymer manufacture, fluorine‐containing compounds are released into the environment; thus, alternatives to fluoropolymers are required for maintaining environmental safety and realizing a sustainable society. Notably, the development of such alternative materials has been limited. Thus, we herein report the application of a novel polyurethane (PU) coating synthesized from bio‐based raw materials. The prepared hydrogenated polyfarnesene PU (HHPF PU), which possesses an amorphous bottlebrush‐like polyalkyl structure, was found to exhibit higher hydrophobicity and oleophobicity than polytetrafluoroethylene (PTFE), which is a typical low‐surface‐energy material. The water and n‐hexadecane contact angles of the HHPF PU were determined to be 119° and 68°, respectively, whereas those of PTFE were 108° and 46°, respectively. In addition, the density depth profile of the PU thin film was confirmed through x‐ray reflectometry. This study provides a novel approach for enhancing the hydrophobicity and oleophobicity of materials using bottlebrush‐like polyalkyl structure instead of fluorine.

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Evaluation of polyphenylene sulfide by surface thermodynamics approaches: Comparison with common polymers

Cited by 7 publications

References 57 publications

Fabrication of highly permeable PDMS@ZIF‐8/PVDF hollow fiber composite membrane in module for ethanol‐water separation

Fabrication of highly permeable PDMS@ZIF‐8/PVDF hollow fiber composite membrane in module for ethanol‐water separation

Investigation of Wettability Behavior and Surface Topology of PVC Materials Used in Outdoor Applications

Enhancement of the hydrophobicity and oleophobicity of a polyurethane coating using a fluorine‐free polyfarnesene‐based polyol

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