Friction and Wear Analysis of PTFE Composite Materials

Salunkhe, Sachin; Chandankar, Pavan

doi:10.1007/978-981-13-2718-6_40

Cited by 4 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…windows into the walls for visual inspection, and issues related to glass design may arise, making the exploration of a metal design worthwhile. Components may be manufactured using a blend of metal and other materials, and the application of low surface energy materials to walls can reduce the adhesion of products, minimizing sticking [9]. Researchers are in the process of developing novel maltodextrins with modified structures, such as cyclic dextrins, which feature distinct branching patterns.…”

Section: Fundingmentioning

confidence: 99%

Enhancing polytetrafluoroethylene (PTFE) coated film for food processing: Unveiling surface transformations through oxygenated plasma treatment and parameter optimization using response surface methodology

Abidin,

Hashim,

Zubairi

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

Spray drying fruit juice powders poses challenges because sugars and organic acids with low molecular weight and a low glass transition temperature inherently cause stickiness. This study employed a hydrophobic polytetrafluoroethylene (PTFE) film to mimic the surface of the drying chamber wall. The Central Composite Design (CCD) using response surface methodology investigated the impact of power (X1, Watt) and the duration of oxygenated plasma treatment (X2, minutes) on substrate contact angle (°), reflecting surface hydrophobicity. To validate the approach, Morinda citrofolia (MC) juice, augmented with maltodextrins as drying agents, underwent spray drying on the improved PTFE-coated surface. The spray drying process for MC juice was performed at inlet air temperatures of 120, 140, and 160°C, along with Noni juice-to-maltodextrin solids ratios of 4.00, 1.00, and 0.25. The PTFE-coated borosilicate substrate, prepared at a radio frequency (RF) power of 90W for 15 minutes of treatment time, exhibited a porous and spongy microstructure, correlating with superior contact angle performance (171°) compared to untreated borosilicate glass. Optimization data indicated that the PTFE film attained an optimum contact angle of 146.0° with a specific combination of plasma RF operating power (X1 = 74 W) and treatment duration (X2 = 10.0 minutes). RAMAN spectroscopy indicated a structural analysis with an ID/IG ratio of 0.2, while Brunauer-Emmett-Teller (BET) surface area analysis suggested an average particle size of less than 100 nm for all coated films. The process significantly improved the powder’s hygroscopicity, resistance to caking, and moisture content of maltodextrin-MC juice. Therefore, the discovery of this modification, which applies oxygen plasma treatment to PTFE-coated substrates, effectively enhances surface hydrophobicity, contact angle, porosity, roughness, and ultimately improves the efficacy and recovery of the spray drying process.

show abstract

Section: Fundingmentioning

confidence: 99%

Enhancing polytetrafluoroethylene (PTFE) coated film for food processing: Unveiling surface transformations through oxygenated plasma treatment and parameter optimization using response surface methodology

Abidin,

Hashim,

Zubairi

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…Design with glass components may be problematic and a metal design can be considered, but dryer may have windows built into its walls to allow visual inspection. Components may be made of metal and other materials and the walls may have a coating using low surface energy materials to minimize product sticking [8]. The highly useful plastic materials PTFE (polytetrafluoroethylene) were identified by name as Teflon is one of plastics group, called fluoropolymers [9].…”

Section: Introductionmentioning

confidence: 99%

Surface Characterization of Polytetrafluoroethylene (PTFE) Substrate after Oxygenated Plasma Treatment towards Potential Food Processing Application

Abidin¹,

Hashim²,

Zubairi³

2022

Preprint

View full text Add to dashboard Cite

The spray drying process causes the buildup of an unspecified and unique pattern of wall deposits on the wall. The powder recovery of fruit juice by spray dryer is associated with stickiness problems because of the nature of food which contains low molecular weight sugars and organic acids, which have a low glass transition temperature (Tg). The surface properties of oxygen plasma treated-PTFE substrate were evaluated by using the different parameters of Plasma Enhanced Chemical Vapour Deposition (PECVD) prior to spray drying analysis. In this study, the fabrication method of nearly perfect superhydrophobic surfaces through plasma treatment with oxygen gas was generated and utilized. The plasma-treated PTFE were deposited from a fixed flow rate of oxygen gas with 30 cm3/min by varying the deposition time from 1 to 15 minutes to induce the hydrophobic surface of the PTFE substrate. The characterization techniques used to determine the morphology and chemical bonding of the substrate are field emission scanning electron microscopy (FESEM) and Fourier transform infrared spectroscopy (FTIR), respectively. The hydrophobicity of the glass samples was determined by the water droplet contact angle. Sample prepared at radio frequency (RF) power of 90W for 15 minutes duration of treatment time showed porous and spongy like microstructure which correlates with the best performance of a good contact angle which creates the superhydrophobicity regime (171o). Surface morphology analysis using scanning electron microscopy (SEM) showed changes in its roughness in the surface-treated glass substrate. The success of this method produced a huge potential for solving most of the food processing issues which relate to biofouling (e.g., powder stickiness) that would otherwise struggle to improve high productivity and recovery.

show abstract

Investigation of Dry Sliding Friction Wear Behavior of CuSn11 Bronze Plain Bearing Applying Impregnated Graphite-Filled PTFE

Güngör

Demirer

2022

Tribology Transactions

View full text Add to dashboard Cite

Friction and Wear Analysis of PTFE Composite Materials

Cited by 4 publications

References 9 publications

Enhancing polytetrafluoroethylene (PTFE) coated film for food processing: Unveiling surface transformations through oxygenated plasma treatment and parameter optimization using response surface methodology

Enhancing polytetrafluoroethylene (PTFE) coated film for food processing: Unveiling surface transformations through oxygenated plasma treatment and parameter optimization using response surface methodology

Surface Characterization of Polytetrafluoroethylene (PTFE) Substrate after Oxygenated Plasma Treatment towards Potential Food Processing Application

Investigation of Dry Sliding Friction Wear Behavior of CuSn11 Bronze Plain Bearing Applying Impregnated Graphite-Filled PTFE

Contact Info

Product

Resources

About