Variable morphology of PTFE-like polymer nanocrystals fabricated by oriented plasma polymerization at atmospheric pressure

In Situ Nanocalorimetric Investigations of Plasma Assisted Deposited Poly(ethylene oxide)-like Films by Specific Heat Spectroscopy

“…The idea of the fragmentation of the monomers by impacts with nonequilibrium electrons in plasma suggests that polyrecombination of radicals should lead to the formation of highly disordered and random networks. Only a limited number of works dealt with the fabrication of plasma polymers with a certain degree of structural order (semicrystalline plasma polymers) under special, “gentle” conditions of both low pressure plasmas − and atmospheric pressure plasmas either with volatile precursors − or with liquid aerosols. , Here PEO oligomers with M n = 1050 g/mol were used as precursors, which counts to approximately 25 CH 2 –CH 2 –O units on average. For such large precursors, the energy delivered per molecule is low, especially under low discharge power conditions and the probability that intact sequences of the PEO units will survive the influence of the plasma.…”

Nanoscience with non-equilibrium plasmas at atmospheric pressure

“…These glow discharges, as such, have been used to grow carbon nanotubes [57] and silicon nanoparticles [58]. Associated with cyclone system, they can be run to coat particles [59,60]. They are certainly used by default in DBD microplasma jets where gaps are extremely small (down to 100 µm).…”

“…xyz-stage, it is possible to control the location of the deposition area on the substrate accurately and to build with these elemental units larger architectures [109]. Semiconductor with a large band-gap that could be deposited locally would present a great potential as a gassensing device [59]. The next step is to be able to grow coatings from a direct assembly of nanoparticles.…”

“…Particles of noble metals (Au [144] and Pt [145]) were produced using a rf plasma [144] and an AC plasma with a liquid electrode used to easily collect the particles [145]. Polymeric nanoparticles have been produced from PTFE precursor [59], siloxane [146] and furan [147]. Finally, about carbon nanoparticles, the synthesis of spheres of graphite [148], DLC [149] fullerenes [150], sheets of graphene [151], nanodisks [91], rods [152] or crumpled paper sheets [153] is also possible.…”

A comparative study on the flexural performance of plasma treated polypropylene fiber reinforced cementitious composites

“…These reactive species may change the surface structure of a material depending on the materials composition and plasma conditions (Yamamoto and Okubo, 1980). Cold or non-thermal plasma is a partially ionized gas where electron temperatures (Te) are much higher than ion (Ti) temperatures (Yamamoto and Okubo, 1980;Guo et al, 2008;Morent et al, 2008). The high-energy electrons and low-energy molecular species can initiate reactions in the plasma volume without causing excessive heat on substrate (Morent et al, 2008).…”