Methoden zur spezifischen Bestimmung von Monostyrol und niedrigen Alkylbenzolen in Polystyrolmarken

Pfab, W.; Noffz, D.

doi:10.1007/bf00483616

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…The luminol reaction has found recent application to the analytical determination of trace amounts of metals (1-3), and use of this reaction to monitor aqueous ion exchange eluents has been demonstrated (4)(5)(6). One of the potential difficulties in using this detector for ion exchange is that such separations are usually performed in acid media (7,8) whereas the luminol reaction being monitored in the detecting coil must be at a pH above 10.0.…”

Section: Literature Citedmentioning

confidence: 99%

Modified solution approach for the gas chromatographic determination of residual monomers by head-space analysis

Steichen¹

1976

Anal. Chem.

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Section: Literature Citedmentioning

confidence: 99%

Modified solution approach for the gas chromatographic determination of residual monomers by head-space analysis

Steichen¹

1976

Anal. Chem.

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“…Two methods specific for styrene monomer and ethyl benzene in polystyrene were described (109). In one method the polystyrene is precipitated with methanol from odichlorobenzene and in the other the monomer and solvents are removed by distillation; both methods are concluded with gas chromatography.…”

Section: Specific Constituentsmentioning

confidence: 99%

“…Procedures for both the polarographic and gas chromatographic determination of styrene monomer in polystyrene resins have been outlined (118) and results tabulated for samples containing up to 0.5% styrene. Two methods specific for styrene monomer and ethyl benzene in polystyrene were described (109). In one method the polystyrene is precipitated with methanol from odichlorobenzene and in the other the monomer and solvents are removed by distillation; both methods are concluded with gas chromatography.…”

Section: Specific Constituentsmentioning

confidence: 99%

Coatings

Swann¹,

Adams²,

Esposito³

1965

Anal. Chem.

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Coating and Chemical laboratory, Aberdeen Proving Ground, Md.H E IMPORTANT CONTRIBUTIONS to T the analysis of coating materials as selected by the reviewers since the previous summary (137) are contained in this biennial review. The period covered extends from November 1962 through December 1964, although a few significant foreign publications, located by abstracts, may predate this ccverage. In this attempt to be selective, it is hoped that valuable publicat i m s have not been omitted. Other similar reviews were made within this pericd (102)(103)(104) 106) in addition to home studies of special subjects. The annual revieus of analytical methods for the examination of oils and fatty acids (81, 82) are very comprehensive.Firestone (56) reviewed available methods for analyzing polymerized fats and oils and James (51) prepared a comprehensive revieh of analytical procedures for separating naturally occurring fatty acids including cisand trans-isomers.The fifth edition of "Standard Methods for the Analysis of Oils, Fats and Soaps" (153) has been published and includes a number of physical and chemical test methods not found in the 10-year old fourth edition. Over one-half of the 122 pages of "Prog~ess in the Chemistry of Fats and Other Lipids" (52) are devoted to the applications of gas chromatography in this field.Boekenoogen (15) has edited the first volume of a work surveying the entire field of analysis of oils and fats.h review of the uses of gas liquid chromatography in the field of drying oils was prepared (40) while several reviews (53, 105,118) are concerned with application of gas chromatography to analysis and research in the field of coatings in general. Two new books on the subject of thin layer chromatography (14,113) include methods for separations of such coating materials as oils, fatty acids, plasticizers, and carboxylic acids. Rybicka (119) prepared a survey of thin layer chromatography with special reference to the problems of the paint analyst. A review t,hat also includes some original methods for the analysis of alkyd resins (115) was prepared in which the analyt,ical scheme was divided into physical tests and chemical tests.Two reviews (72, 127) of the analysis of synthetic resins in general were published; the one by Kupfer contains 227 references. Lucchesi (78) prepared a paper on the role of analytical tools in coating research, commenting mostly on the applications of nuclear magnetic resonance, gel permeation c hromatogral ihy , and attenuated total reflectance for surface analysis. Valentine (146) discussed the use of the electron microsope and the Coulter counter, as well as reflectance spectrophotometry for the study of paint films.The Office of Technical Services of the U. S. Department of Commerce prepared a selective bibliography (145) of its available reports on paints and varnishes, collected from 1945 through 1963; unfortunately, however, many available reports on the subject were omitted from the listing. GENERAL ANALYTICAL SCHEMES13y far the greatest nuinber of contributions...

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Gaschromatographische trennung und bestimmung von oligostyrolen

Braun

Meier

1967

Angew. Makromol. Chem.

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ZUSAMMENFASSUNG :Kationisch erhaltene Gemische aus Styrol und Oligostyrolen mit Polymerisationsgraden von 2 bis 5 lassen sich durch temperaturprogrammierte Gaschromatographie trennen. Mit dem gleichen Verfahren kann auch der Gehalt an Styrol und Oligostyrolen in radikalisch hergestellten technischen Polystyrolen ermittelt werden. Hierbei ergibt sich, da13 bei der Bestimmung von Styrol in Polystyrol nach DIN 53 719 auch ungesiittigte Oligomere erfaBt werden. Die Summe des gaschromatographisch bestimmten Monomer-und Oligomergehaltes stimmt mit dem nach DIN 53 7 18 erhaltenen methanolloslichen Anteil iiberein. SUMMARY:Cationicly obtained mixtures of styrene and oligostyrenes having polymerization degrees of 2 to 5 may be separated by temperature programmed gaschromatography. The same method can also be applied to the determination of the contents of styrene and oligostyrenes in commercial polystyrenes prepared by radical polymerization. It is found that the DIN 53719 method for determining styrene in polystyrene includes also unsaturated oligomers. The sum of the monomer and oligomer contents determined by gaschromatography is in agreement with the amount of the methanol-soluble portion determined according to the DIN 53718 method.

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Methoden zur spezifischen Bestimmung von Monostyrol und niedrigen Alkylbenzolen in Polystyrolmarken

Cited by 10 publications

References 2 publications

Modified solution approach for the gas chromatographic determination of residual monomers by head-space analysis

Modified solution approach for the gas chromatographic determination of residual monomers by head-space analysis

Coatings

Gaschromatographische trennung und bestimmung von oligostyrolen

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