Coating of carbon fibers with adhesion-promoting thin polymer layers using plasma polymerization or electrospray ionization technique-A comparison

Abstract

Front Cover: Two diff erent atmospheric pressure non-thermal plasmas have been used to clean the surface of a corroded 19 th century daguerreotype. The fi gures on top show the fi gure visage untreated; after 2 nd plasma-jet treatment on the left half-side only; and after DBD-plasma treatment of the right half-side too. The fi gures at the bottom show optical micrographies in white light of the woman's eye on the left daguerreotype portion in (a) untreated conditions and (b) after plasma-jet treatment. Further details can be found in the article by M. Boselli et al. on 1600027. Feature Article In this work, the eff ect of T substrate on the plasma deposition kinetics and thermal properties of pdMMA fi lms is assessed. A plasma deposition mechanism is proposed, based on the adsorption/desorption equilibrium of activated species, followed by a surface plasma polymerization. A decreased volatile fraction and enhanced cross-link density with increasing T substrate is shown by TG analysis. In accordance , DSC analysis confi rms an increasing glass transition. Plasma polymers and electrospray-ionization (ESI) polymer layers are compared for most ef-fi cient adhesion promotion in carbon fi ber-epoxy resin composites. Diff erences in chemical structure and composition of polymer layers are discussed as well as the surface topography of these nanometer thick fi lms.

Facile preparation of polymer coating on reduced graphene oxide sheets by plasma polymerization

“…They also demonstrated strong adhesion between the plasma polymer and the CF [34]. Similar work was also conducted by Friedrich's group [35]. He et al prepared ultrathin polystyrene film on the surface of carbon nanotubes, and the dispersion of multi-wall carbon nanotubes in polystyrene composites was significantly improved [36].…”

Enhancing the Understanding of Soil Nitrogen Fate Using a 3D-Electrospray Sensor Roll Casted with a Thin-Layer Hydrogel

“…Furthermore, the potential variation (Δ E ) of these HS-ISM nitrogen sensors during a 20 h period was fairly slight with 0.3 mV/h for NH 4 + sensors and 0.1 mV/h for NO 3 – sensors (Figure f), which was amazingly lower than other water sensors, such as PTFE-load nitrate S-ISM sensors (0.9 mV/h), inkjet-printed nitrate S-ISM sensors (0.9 mV/h), and ruthenium dioxide-based pH sensors (0.38 mV/h) . This superb stability resulted from a tiny amount of the S-ISM polymer solute coated onto the electrode substrate using the 3D-electrospray printing technology (Figure ) and the deposition of the next layer carrying some excessive solvent (e.g., tetrahydrofuran) that could redissolve the previously printed layers and strengthen the affinity of S-ISM with the carbon electrode …”

“…57 This superb stability resulted from a tiny amount of the S-ISM polymer solute coated onto the electrode substrate using the 3D-electrospray printing technology (Figure 1) and the deposition of the next layer carrying some excessive solvent (e.g., tetrahydrofuran) that could redissolve the previously printed layers and strengthen the affinity of S-ISM with the carbon electrode. 58 3.3. Long-Term Continuous Real-Time Monitoring of Soil Nitrogen and Developing the Nonequilibrium Model to Compensate NH 4 + Adsorption Impact.…”