Cyanäthylierung der pulverförmigen vernetzten Cellulose

Pastýr, Jan; Kuniak, Ľ.

doi:10.1007/bf02464504

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“…Pastyr and Kuniak (1971) started from cross-linked microcrystalline cellulose which was etherified with Na-chloroethyl sulfonate. Pastyr and Kuniak (1971) started from cross-linked microcrystalline cellulose which was etherified with Na-chloroethyl sulfonate.…”

Section: Cell-0-si(ch 3 )3 + H2o ^P-cell-oh + H0-si{ch 3 )3 2 Ho-si (mentioning

confidence: 99%

17. Derivatives of Cellulose

1983

Wood

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Cellulose is mainly utilized in a more or less purified condition in the form of paper and paperboard. But derivatives having properties different from those of cellulose are also used in numerous fields. In some cases the derivatives are only intermediates for transforming the state of cellulose (e.g. for the production of threads and foils). (Fig. 17-1). Cellulose can be regarded as a polyalcoholic compound as each glucose unit within the molecular chain bears three hydroxylic groups (-» 4.2.1.). Cellulose, however, is a solid-state polyalcohol, most of its OH-groups being linked by hydrogen bonds (-» 4.2.4.). Nevertheless the OH-groups may react like those from other alcohols forming various derivatives. Thus the formation of esters with inorganic and organic acids, ethers with other alcohols, alcoholates with bases, oxidation products (acids), halogenides, amines, complexes etc. is possible

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Section: Cell-0-si(ch 3 )3 + H2o ^P-cell-oh + H0-si{ch 3 )3 2 Ho-si (mentioning

confidence: 99%

17. Derivatives of Cellulose

1983

Wood

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“…Polystyrene resins cross-linked with bis(4-vinylphenyl)methane are said to be mechanically stronger than those cross-linked with divinylbenzene (497). A new sulfonic-acid resin with an aliphatic matrix based on starch was described (439).…”

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Ion exchange and liquid column chromatography

Walton¹

1976

Anal. Chem.

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This year the reviews of ion exchange and of liquid column chromatography are combined. It was logical to do this, for the techniques of high-performance liquid .chromatography include the use of ion exchangers. For one reviewer to report on two years' advances in liquid chromatography as well as in ion exchange is, however, a formidable task. It was made somewhat easier by the decision to include ion-exchanging thin-layer and paper chromatography in another review. "Liquid ion exchangers" are likewise omitted except for a few references to partition chromatography.To cite all the literature references in the two overlapping fields of ion exchange and liquid column chromatography is clearly impossible. Computer print-outs can be obtained from the abstract services, but a reviewer should do more than merely copy these lists. I preferred to peruse the Harold F. Walton joined the staff of the University of Colorado in 1947. His research interests in ion exchange date from 1938 when he went to work for the Permutit Co. as a research chemist; from there he went to Northwestern University in 1940. He obtained the BA and DPhil degrees at Oxford University. He is the author of three textbooks on inorganic and analytical chemistry and coauthor with William Rieman III of "Ion Exchange in Analytical Chemistry" published in 1970. He has contributed chapters on the physical and analytical chemistry of ion exchange to several cooperative works. In 1961 he was chairman of the Gordon Research Conference on Ion Exchange. Dr. Walton spent the 1966-67 academic year and half of 1970 as a Fulbright visiting professor at the University of Trujillo, Peru. He was a member of the Advisory Board of Analytical Chemistry.

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Cyanäthylierung der pulverförmigen vernetzten Cellulose

Cited by 2 publications

References 0 publications

17. Derivatives of Cellulose

17. Derivatives of Cellulose

Ion exchange and liquid column chromatography

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