Effects of Electron Beam Irradiation on Adhesive Force of Laminated Sheet of High Strength Polytetrafluoroethylene (PTFE) and Bio-Adaptable Polydimethylsiloxane (PDMS)

Abstract

o E p , electron spin resonance (ESR) signals related to dangling bonds were observed. When HLEBI cut the chemical bonds and generated dangling bonds with nonbonding electrons in PTFE and PDMS, the electrons induced the chemical bonding and intermolecular attractive force. HLEBI induced strong adhesive force of laminated sheets was explained by the discussion. Therefore, it was concluded that HLEBI was a useful tool for quick lamination of bio-adaptable PDMS and high strength PTFE.

Creation of Adhesive Force between Laminated Sheets of Polyurethane (PU) and Polytetrafluoruethylene (PTFE) by Homogeneous Low Energy Electron Beam Irradiation Prior to Hot-Press for Bio-Adaptable Application

“…13,18) When HLEBI cuts the chemical bonds and generates dangling bonds with nonbonding electrons in PU and PTFE polymers, the electrons probably induce the chemical bonding and intermolecular coulomb attractive forces. The mean adhesive force of peeling resistance ( o F p ) created between the PU/PTFE sheets by the double-step treatment applying HLEBI prior to hot-press lamination can therefore be explained.…”

Adhesion of Polyethylene/Polyethylene Terephthalate (PE/PET) Laminated Sheets by Homogeneous Low Potential Electron Beam Irradiation (HLEBI) Prior to Assembly and Hot-Press above Melting Point

“…Peeling adhesive force (F p ) vs. peeling distance (d p ) curves were obtained by using a micro-load tensile tester (F-S Master-1K-2N, IMADA Co. Ltd., Japan) with a strain rate of 10 mm/min. 6) Since the unit of the F p was N·m −1 , the o F p was used instead of the adhesive strength, whose units should be N·m . The sample condition of tensile test was as follows:…”

“…ments Surface analysis by X-ray photoelectron spectrometer (XPS: Quantum 2000, ULVAC Co., JAPAN) 6) has been performed for peeled PE and PET lms with and without 1.08 MGy HLEBI. PE lms contain the element of carbon (C), whereas PET lms contain elements of C and oxygen (O).…”

“…HLEBI has been found to increase adhesive mechanical properties of polymer-polymer laminations for biomedical applications of PDMS (polydimethylsilozane)/PTFE (polytetra uoroethylene) 6) , PDMS/PP (polypropylene) 7) , and then create strong adhesion of PTFE/PE. 8) Improvements are mainly caused by the irradiation with the formation of dangling bonds at terminated atoms in polymers.…”

Effects of Homogeneous Low Energy Electron Beam Irradiation (HLEBI) on Adhesive Energy of Peeling Resistance of Laminated Sheet with Polyurethane (PU) and Polyethylene Terephthalate (PET)

“…Polyimide/polytetra uoroethylene (PI/PTFE) layered lms have been successfully fabricated by Homogeneous low energy electron beam irradiation (HLEBI); 4) while applying 0.50 MGy HLEBI dose increased adhesive bond strength between PET lms and acrylic adhesive. 5) HLEBI has been found to increase adhesive mechanical properties of polymer-polymer joints for biomedical applications of PDMS (polydimethylsilozane)/PTFE, 6) PDMS/ PP (polypropylene), 7) and create strong adhesion in the difcult to bond PTFE/PE (polyethylene). 8) Improvements are mainly caused by the irradiation with the formation of dangling bonds at terminated atoms in polymers.…”