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The expansion of PTFE, a linear polymer made of fluorine and carbon molecules, results in the formation of an ePTFE membrane.
This microporous membrane has many very desirable properties, such as a high strength-to-weight ratio, biocompatibility, and excellent thermal resistance.
To smooth out any lumps and ridges in the pipes and produce a truer seal, this porous fluoroplastic is usefully applied to chemical pipe flanges in the oil and gas industry.
Along with being soft, robust, and flexible, ePTFE is also used to create an extremely porous mesh-like structure for implants.
The Global ePTFE membrane market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
TTG Introduces New CELLATE ePTFE Products for the Market of Medical Devices. To produce the CELLATEX series of microporous expanded PTFE (ePTFE) membranes, tapes, and laminated textiles, Trinity Technologies Group (TTG, Inc.) used its extensive knowledge in polymer engineering and patented production technology.
Engineers of medical devices now have a new choice for high-performance ePTFE materials created exclusively for medical purposes.
Finely tuned membranes, tapes, and laminated textiles with homogeneous microporosity are produced using a highly regulated manufacturing process to meet the demanding quality and performance standards of the medical device industry.
The material is exceptionally well suited for implantable and other medical and dental applications since it is biocompatible, has a very low surface energy, and is chemically resistant.
TTG’s patented technique enables them to create ePTFE products with precise, homogeneous microporosity and other required qualities, such as high dielectric strength, flexibility, tenacity, hydrophobicity, and tunable permeability.
In many demanding fields, such as industrial filtration, medical implants, bio-/nano-sensors/actuators, and microanalysis, expanded polytetrafluoroethylene (ePTFE) nanofibrous membranes are an excellent choice due to their high porosity (80%–90%), high gas permeability, chemical inertness, and superhydrophobicity (i.e., lab-on-a-chip).
However, one of the main obstacles preventing the use of such membranes is their inherent low surface energy and chemical inertness, which prevent them from bonding to other materials.
Prior attempts to increase the adhesion of ePTFE membranes to other surfaces entailed surface chemical treatments, but these efforts failed because the mechanical integrity and breakthrough pressure of the membrane were degraded.
Here, they present a quick and adaptable technique for attaching ePTFE membranes to various surfaces by adding an additional adhesive layer in the middle.
Despite the fact that a wide range of adhesives can be employed with this technique, the best bonding performance is obtained with adhesives that have low contact angles with the membrane and moderate contact angles with the substrate.
A roll-coating procedure can be used to uniformly apply a thin layer of an adhesive onto micro-patterned substrates with feature sizes as small as 5 m.
Membrane-based microchannel and micropillar devices have been successfully created and put through testing with burst pressures of up to 200 kPa.
After debonding, a small portion of the membrane still clings to the substrate, indicating that mechanical interlocking via nanofiber interaction is the primary mechanism of adhesion.
In order to recommend the ideal shape design, they first developed a paediatric pulmonary mechanical circulatory system that quantitatively measured the hemodynamic properties of expanded polytetrafluoroethylene (ePTFE) pulmonary valved conduits.
A pulmonary valve chamber, an elastic pulmonary compliance model with peripheral vascular resistance units, a venous reservoir, and a pneumatically powered right atrium and ventricle model made up the system.
They used two distinct kinds of ePTFE valves and used a high-speed video camera to assess how the mobility of the leaflets and hemodynamic properties related to one another.
They were able to accurately replicate hemodynamic simulations in the paediatric pulmonary mock system as a result.
