Rhinorrhea due to chromic acid etching in a chromium sensitive person

Polyethylene is one of the most important plastics produced today because of its good physical properties, ease of fabrication and low cost. Studies to improve the properties of polyethylene are leading to an understanding of its crystalline morphology. Polyethylene crystallized by evaporation from dilute solutions consists of thin crystals called lamellae. The polyethylene molecules are parallel to the thickness of the lamellae and are folded since the thickness of the lamellae is much less than the molecular length. This lamellar texture persists in less perfect form in polyethylene crystallized from the melt.Morphological studies of melt crystallized polyethylene have been limited due to the difficulty of isolating the microstructure from the bulk specimen without destroying or deforming it.

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Electroless copper plating on acrylonitrile butadiene styrene material surfaces without chromic acid etching and a palladium catalyst

Journal of Applied Polymer Science ◽

10.1002/app.29144 ◽

2008 ◽

pp. NA-NA ◽

Cited By ~ 1

Author(s):

Norihiro Inagaki ◽

Hajime Kimura

Keyword(s):

Palladium Catalyst ◽

Chromic Acid ◽

Acrylonitrile Butadiene Styrene ◽

Acid Etching ◽

Copper Plating ◽

Electroless Copper Plating ◽

Material Surfaces ◽

Electroless Copper ◽

Butadiene Styrene

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X-ray photoelectron spectroscopy studies of polymer surfaces, 4?further studies of the chromic acid etching of low density polyethylene

Surface and Interface Analysis ◽

10.1002/sia.740020306 ◽

1980 ◽

Vol 2 (3) ◽

pp. 107-114 ◽

Cited By ~ 48

Author(s):

D. Briggs ◽

V. J. I. Zichy ◽

D. M. Brewis ◽

J. Comyn ◽

R. H. Dahm ◽

...

Keyword(s):

Photoelectron Spectroscopy ◽

Chromic Acid ◽

Polymer Surfaces ◽

Low Density Polyethylene ◽

Acid Etching ◽

Low Density ◽

X Ray ◽

Spectroscopy Studies

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A New Palladium-Free Surface Activation Process for Cu Electroless Plating on ABS Plastic

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.548.54 ◽

2012 ◽

Vol 548 ◽

pp. 54-57 ◽

Cited By ~ 1

Author(s):

Xu Wang

Keyword(s):

Chromic Acid ◽

Copper Film ◽

Acid Etching ◽

Hydroxyl Groups ◽

Activation Process ◽

Surface Activation ◽

Reduction Temperature ◽

Environment Friendly ◽

Nickel Particles ◽

Electroless Copper

An environment-friendly surface etching and activation technics for ABS surface metallization were investigated as a replacement for conventional chromic acid etching bath and palladium catalyst. After etching by H2SO4-MnO2 colloid, the ABS surfaces became roughness; meanwhile the carboxyl and hydroxyl groups were formed on the surface. With absorption and a reduction by a dimethylamineborane solution, nickel particles were deposited on the ABS surface, which serves as a catalyst replacement for SnCl2/PdCl2 colloid. The effects of NiSO4 concentration, (CH3) 2NHBH3 concentration, reduction temperature and reduction time on the adhesion strength between the ABS surface and the electroless copper film were investigated.

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