Synthesis of a nonpolar, chemically bonded stationary phase with low residual hydroxyl group content

1980 ◽  
Vol 13 (1) ◽  
pp. 11-17 ◽  
Author(s):  
J. L. M. van de Venne ◽  
J. P. M. Rindt ◽  
G. J. M. M. Coenen ◽  
C. A. M. G. Cramers
Keyword(s):  
Stationary Phase ◽  
Hydroxyl Group ◽  
Group Content ◽  
Chemically Bonded Stationary Phase

Polyfunctional chemically bonded stationary phase for reversed phase high-performance liquid chromatography

1998 ◽  
Vol 48 (9-10) ◽  
pp. 615-622 ◽  
Author(s):  
B. Buszewski ◽  
R. Gadzała-Kopciuch ◽  
R. Kaliszan ◽  
M. Markuszewski ◽  
M. T. Matyska ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Stationary Phase ◽  
High Performance ◽  
Reversed Phase ◽  
Chemically Bonded Stationary Phase

Biomass Biodegradable Starch Material Cushioning Packaging Products and Plasticizing Properties of Compatibility

2014 ◽  
Vol 541-542 ◽  
pp. 343-348
Author(s):  
Xiu Jie Jia ◽  
Jian Feng Li ◽  
Fang Yi Li
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Infrared Spectrum ◽  
Ethylene Glycol ◽  
Environmental Protection ◽  
Spectrum Analysis ◽  
Packaging Material ◽  
Hydroxyl Group ◽  
Group Content ◽  
Electronegative Group

Biomass cushioning packaging material has been gaining attention in the properties of the materials because of biodegradable and green environmental protection, and the starch plastics play an important role. Urea, formamide, glycerol, ethylene glycol four material compounded with starch respectively, for the purpose to forming hydrogen bonds by the test in this paper, the ability to hydrogen bond with the starch has been observed by infrared spectrum analysis. The results showed that urea, formamide as strong electronegative group stronger binding, glycerol and ethylene glycol are more preferably to form hydrogen bonds with the starch because of more hydroxyl group content.

1-chlorobutadiene–butadiene rubber. III. Determination of hydroxyl group content

1979 ◽  
Vol 23 (7) ◽  
pp. 1951-1962 ◽  
Author(s):  
Shinzo Yamashita ◽  
Katsumi Sando ◽  
Shinzo Kohjiya
Keyword(s):  
Hydroxyl Group ◽  
Butadiene Rubber ◽  
Group Content

Cellulose Tris(3,5-Dimethylphenylcarbamate) Regioselectively Bonded to Small Pore Silica Gel as Chiral Stationary Phase for HPLC

2011 ◽  
Vol 117-119 ◽  
pp. 1361-1364
Author(s):  
Yi Jun Zhang ◽  
Cai Xia Dong ◽  
Jun Chen ◽  
Run Qiang Liu
Keyword(s):  
Stationary Phase ◽  
Silica Gel ◽  
Mobile Phase ◽  
High Performance ◽  
Chiral Stationary Phase ◽  
High Performance Liquid Chromatographic ◽  
Hydroxyl Group ◽  
Cellulose Derivatives ◽  
Terephthaloyl Chloride ◽  
Small Pore

A bifunctional reagent of terephthaloyl chloride was initially adopted as a spacer reagent to prepare the bonded types of chiral stationary phase (CSP) with cellulose derivatives. (3,5-dimethylphenyl)carbamates of cellulose (CDMPC) regioselectively bonded to small pore (3-aminopropyl)silica gel (APS) were prepared with terephthaloyl chloride as a spacer at the 6-position of the primary hydroxyl group on the glucose unit of cellulose. Enantioseparations of five racemic samples are evaluated on the prepared CSP under normal-phase high-performance liquid chromatographic mode with hexane- isopropylalcohol as the mobile phase. The influence of flow rates and mobile phase compositions on the resolution were investigated. The prepared stationary phase was exhibited an effective chiral recognition.

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