Overview of Polyethylene Terephthalate Foils Patterned Using 10 MeV Carbon Ions for Realization of Micromembranes

Abstract

Polymer membranes are conventionally prepared using high-energy particles from radioactive decay or by the bombardment of hundreds of MeVs energy ions. In both circumstances, tracks of damage are produced by particles/ions passing through the polymer, and successively, the damaged material is removed by chemical etching to create narrow pores. This process ensures nanosized pore diameter but with random placement, leading to non-uniform local pore density and low membrane porosity, which is necessary to reduce the risk of their overlapping. The present study is focused on the use of polyethylene terephthalate (PET) foils irradiated by 10.0 MeV carbon ions, easily achievable with ordinary ion accelerators. The ion irradiation conditions and the chemical etching conditions were monitored to obtain customized pore locations without pore overlapping in PET. The quality, shape, and size of the pores generated in the micromembranes can have a large impact on their applicability. In this view, the Scanning Transmission Ion Microscopy coupled with a computer code created in our laboratory was implemented to acquire new visual and quantitative insights on fabricated membranes.

Recent Progress in the Application of Ion Beam Technology in the Modification and Fabrication of Nanostructured Energy Materials

“…Mariapompea et al irradiated polyethylene terephthalate (PET) foils with 10 MeV C 4+ ions. 149 By Scanning Transmission ion Microscopy combined with the TrackHH code created in their laboratory to monitor ion irradiation conditions and the chemical etching conditions, the complex damage structure in the ion tracks can be determined, allowing insight into hole size, shape, and connectivity to obtain customized pore locations without pore overlapping in PET. The Scanning Transmission Ion Microscopy coupled with a computer code created in their laboratory was implemented to acquire visual and quantitative insights on fabricated membranes.…”

“…This process ensures nanosized pore diameter but with random placement, leading to nonuniform local pore density and low membrane porosity. Mariapompea et al irradiated polyethylene terephthalate (PET) foils with 10 MeV C 4+ ions . By Scanning Transmission ion Microscopy combined with the TrackHH code created in their laboratory to monitor ion irradiation conditions and the chemical etching conditions, the complex damage structure in the ion tracks can be determined, allowing insight into hole size, shape, and connectivity to obtain customized pore locations without pore overlapping in PET.…”

A Clinical Study of 50 Partially Edentulous Patients with Fixed Partial Denture Restorations to Compare Clinical Parameters and Changes in Gingival Sulcus Width After Displacement with 2 Different Gingival Retraction Cord Materials (Cotton and Polymer)

“…Compared to cotton, which is a natural fiber, the polymer-based retraction cord consists of PTE, which is a polyamide-conjugated yarn [31]. Its use in medical science has recently generated interest and has already found applications in the making of sutures, vascular grafts, tendon graft, heart valves, surgical meshes, scaffolds, and urinary and bloodstream catheters [32][33][34]. PTE is essentially a polyester product between ethylene glycol and dimethyl terephthalate transesterification [35].…”

Mask-Assisted Deposition of Ti on Cyclic Olefin Copolymer Foil by Pulsed Laser Deposition

“…The uncommon properties exhibited by polymers such as their flexible, lightweight, low-cost and optical properties make them a valuable part of our life not only as consumer products but also in innovative technology [ 2 ], fundamental and [ 3 ] material sciences [ 4 ].…”