Protein Adsorption Characteristics of a Sulfonic-Acid-Group-Containing Nonwoven Fabric

Abstract The subsidiary colors in commercial FD&C Blue No. 1 have been identified by thin layer chromatography. They consist of dyes formed by the loss of one sulfonic acid group or of one sulfonated benzyl group from FD&C Blue No. 1.

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Reactions of SO2X mono-substituted arenes with SO3 in nitromethane: electronic and steric directing effects of the sulfonic acid group and some model substituents

Canadian Journal of Chemistry ◽

10.1139/v93-031 ◽

1993 ◽

Vol 71 (2) ◽

pp. 210-215 ◽

Cited By ~ 4

Author(s):

Harold R. W. Ansink ◽

Erik J. De Graaf ◽

Erwin Zelvelder ◽

Hans Cerfontain

Keyword(s):

Sulfonic Acid ◽

Sulfur Trioxide ◽

Reaction Rates ◽

Acid Group ◽

Sulfonic Acid Group ◽

Order Of Magnitude ◽

Directing Effect ◽

Naphthalene Series ◽

Benzene Series

The sulfonation of benzene-SO2X (X = CH3, OCH3, OH, and Cl) and of 1- and 2-naphthalene-SO2X (X = CH3, OCH3, and Cl) with sulfur trioxide in nitromethane as solvent has been studied. In the benzene series, substitution only occurs at the 3-position irrespective of X; the reaction rates, which are all within the same order of magnitude, are low. Upon sulfonation of the 1-SO2X-substituted naphthalenes, the main sulfonation product (58–80%) is the 5-sulfonic acid (5-S); in addition, 6-S and small amounts of 3-S and 7-S are formed. Also, the formation of the intermolecular sulfonic anhydride of 1-(methylsulfonyl)naphthalene-5-S is observed. The 2-SO2X-substituted naphthalenes all yield the 5-S and 8-S in a ratio of [Formula: see text] For both the benzene and naphthalene series, insertion of SO3 between the SO2 and X moieties of the chlorosulfonyl and methoxysulfonyl substituents proper takes place. In the benzene series these reactions are fast as compared with the actual ring sulfonation, whereas in the naphthalene series they are, in general, relatively slow. In the naphthalene series the mesomeric directing effect of the SO2X groups is less important than in the benzene series; the "naphthalene α-effect" also plays an important role.

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Sulfonic acid group-containing thin films prepared by plasma polymerization

Journal of Applied Polymer Science ◽

10.1002/app.1989.070381005 ◽

1989 ◽

Vol 38 (10) ◽

pp. 1829-1838 ◽

Cited By ~ 26

Author(s):

N. Inagaki ◽

S. Tasaka ◽

H. Miyazaki

Keyword(s):

Thin Films ◽

Sulfonic Acid ◽

Plasma Polymerization ◽

Acid Group ◽

Sulfonic Acid Group

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Ionic liquid/H2O-mediated synthesis of mesoporous organic polymers and their application in methylation of amines

Chemical Communications ◽

10.1039/c7cc01910f ◽

2017 ◽

Vol 53 (44) ◽

pp. 5962-5965 ◽

Cited By ~ 8

Author(s):

Xiaoxiao Yu ◽

Zhenzhen Yang ◽

Hongye Zhang ◽

Bo Yu ◽

Yanfei Zhao ◽

...

Keyword(s):

Ionic Liquid ◽

Sulfonic Acid ◽

Acid Group ◽

Sulfonic Acid Group ◽

Organic Polymers ◽

Functionalized Ionic Liquid ◽

Troger's Base

Mesoporous Tröger's base-functionalized organic polymers were prepared using a sulfonic acid group functionalized ionic liquid/H2O system without any templates and surfactants.

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Preparation of Biodiesel from Tung Oil Catalyzed by Sulfonic-Functional Brǒnsted Acidic Ionic Liquids

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.314-316.1459 ◽

2011 ◽

Vol 314-316 ◽

pp. 1459-1462 ◽

Cited By ~ 5

Author(s):

Jian Hui Zhou ◽

Yu Jing Lu ◽

Bao Hua Huang ◽

Yan Ping Huo ◽

Kun Zhang

Keyword(s):

Catalytic Activity ◽

Ionic Liquids ◽

Sulfonic Acid ◽

Acid Group ◽

Sulfonic Acid Group ◽

Tung Oil ◽

Acidic Ionic Liquids ◽

Good Catalytic Activity

Preparation of biodiesel from tung oil catalyzed by five Brǒnsted acidic ionic liquids (ILs) with propyl sulfonic acid group was investigated. These ILs show good catalytic activity for the transeserification of tung oil. Among these ILs, [C3SO3Hmim]HSO4 showed a highest catalytic activity. In addition, these ionic liquids had a good reusability and could be easily separated from the biodiesel.

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