๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

171. The determination of molecular distributions of graphite binder materials by gel permeation chromatography

โœ Scribed by E.M Wewerka

Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
118 KB
Volume
6
Category
Article
ISSN
0008-6223

No coin nor oath required. For personal study only.

โœฆ Synopsis

Certain petroleum cokes produce "doublet" (001) X-ray diffraction peaks after they have been heattreated in the 1300" to 1900ยฐC temperature range. These cokes undergo an irreversible volume expansion in this same range. If an additive such as Fe,O, which suppresses the volume expansion is added, the "doublet" (001) reflections do not appear. X-ray and helium density measurements performed on cokes with and without Fe,O, present, indicate that a significant increase in closed pore volume has resultedduring the volume expansion. This work describes the relationship between the volume expansion, increase in closed pore volume and doublet (001) reflections.

  1. The nucleation and growth of some electrodeposited materials on graphite.

๐Ÿ“œ SIMILAR VOLUMES

The determination of the molecular distr
The determination of the molecular distributions of graphite binder materials by gel permeation chromatography
โœ E.M. Wewerka ๐Ÿ“‚ Article ๐Ÿ“… 1968 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 705 KB

The molecular distributions of a number of furfuryl alcohol resins, coal tar pitches, coumarone-indene resins and gilsonite resins were characterised by the new technique of gel permeation chromatography (GPC). The components of the furfuryl alcohol resins ranged in mol. wt. from about 5000 down to

Determination of molecular weight distri
Determination of molecular weight distributions of novolac resins by gel permeation chromatography
โœ Timothy R. Dargaville; Felix N. Guerzoni; Mark G. Looney; Devon A. Shipp; David ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 214 KB ๐Ÿ‘ 2 views

The number-and weight-average molecular weights of several statistical and high ortho novolac resins were determined using gel permeation chromatography (GPC). The standards used were pure compounds having between 2 and 12 phenol units bridged via methylene linkages. Three series of compounds were s

Molecular weight distributions of block
Molecular weight distributions of block copolymers of poly(isoprene:styrene) by gel permeation chromatography
โœ D.N. Cramond; J.M. Hammond; J.R. Urwin ๐Ÿ“‚ Article ๐Ÿ“… 1968 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 392 KB

Gel permeation chromatograms of block copolymers of cis 1:4 polyisoprene and polystyrene with narrow molecular weight and composition distributions have been examined by the normal -probability plot method. The parameters l~lw, 1~I, and standard deviation ~ have been evaluated and the results compar