Mechanism of corona treatment on polyolefin films

Zhang, Dong; Sun, Qinwei; Wadsworth, Larry C.

doi:10.1002/pen.10264

Cited by 85 publications

(79 citation statements)

References 34 publications

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“…This technique uses corona discharge which forms a highly reactive gas that reacts with polymer surfaces primarily by breakage of H-C bonds [140,141]. Consequently, polar groups, such as carbonyl and carboxyl groups are produced [141][142][143][144][145][146][147][148][149][150][151].…”

Section: Graftingmentioning

confidence: 99%

Factors affecting the hygroexpansion of paper

Lindner

2017

J Mater Sci

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Paper is a widely used packaging material and is nowadays regaining importance, e.g., as bio-based and biodegradable material. Moreover, new technologies such as polymer-fiber composites, printed electronics and the deep drawing of paper are developing. The process stability and also the resulting quality of paper converting processes such as coating, metallization, printing, and the printing of electronics are highly affected by the hygroexpansion of paper. In order to reduce production instability and to choose and develop paper substrates with ideal characteristics, critical parameters need to be known. This paper offers an extensive overview of those parameters, starting at a molecular and microscopic level with the effect of the constituents and morphology of single fibers, before moving on to paper contents, chemical modifications and additives and finally concluding with paper production and fiber network modification. It was found that the major influences are single fiber sorption, inter-fiber contacts, microfibril angle, fiber morphology (length, width, curliness) and fiber orientation. This review gives new ideas and insights for technologists working in research, development and production optimization of paper-based products.

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Section: Graftingmentioning

confidence: 99%

Factors affecting the hygroexpansion of paper

Lindner

2017

J Mater Sci

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“…Corona treatment had allowed an activation of the surface with pine air electric discharges at atmospheric pressure. This treatment increased the surface energy and also favored adhesion between the treated area and another surface [26]. Silica capillaries were connected to reservoirs and glued to avoid leaks of liquids.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Effect of Plasma Polymerized Siloxane Coating for Enzyme Immobilization and Microfluidic Device Conception

et al. 2016

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This paper describes the impact of a physical immobilization methodology, using plasma polymerized 1,1,3,3, tetramethyldisiloxane, on the catalytic performance of β-galactosidase from Aspergillus oryzae in a microfluidic device. The β-galactosidase was immobilized by a polymer coating grown by Plasma Enhanced Chemical Vapor Deposition (PEVCD). Combined with a microchannel patterned in the silicone, a microreactor was obtained with which the diffusion through the plasma polymerized layer and the hydrolysis of a synthetic substrate, the resorufin-β-D-galactopyranoside, were studied. A study of the efficiency of the immobilization procedure was investigated after several uses and kinetic parameters of immobilized β-galactosidase were calculated and compared with those of soluble enzyme. Simulation and a modelling approach were also initiated to understand phenomena that influenced enzyme behavior in the physical immobilization method. Thus, the catalytic performances of immobilized enzymes were directly influenced by immobilization conditions and particularly by the diffusion behavior and availability of substrate molecules in the enzyme microenvironment.

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“…Beside the widespread use of corona discharges in air to impart hydrophilic, polar character to polymers [12,13], whether and when AP cold plasmas will become competitive with respect to LP systems for material processing, and reach their same versatility and variety of deposition, grafting and etching processes on different materials, is still an open questions. In AP Dielectric Barrier Discharges (DBD), for example, the strong influence of the substrate on the processes and the narrow interelectrode gap are significant drawbacks [14].…”

Section: Atmospheric Pressure Cold Plasmas For Materials Processingmentioning

confidence: 99%