A novel approach using differential scanning calorimetry to investigate the dissolved state in aqueous solutions of polymers used for papermaking

2003 ◽  
Vol 89 (10) ◽  
pp. 2798-2807 ◽  
Author(s):  
Tatsuo Yamauchi ◽  
Nobutake Tamai
Keyword(s):  
Differential Scanning Calorimetry ◽  
Aqueous Solutions ◽  
Scanning Calorimetry ◽  
Novel Approach

A Novel Approach to Unzipped Tubes Synthesis Using Sulfanilic Acid as the Backbone Amino Acid

2019 ◽  
Vol 57 ◽  
pp. 17-30
Author(s):  
Christopher Narh ◽  
Charles Frimpong ◽  
Qu Fu Wei
Keyword(s):  
Differential Scanning Calorimetry ◽  
Bond Formation ◽  
Sulfanilic Acid ◽  
Test Results ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Torsion Angles ◽  
X Ray ◽  
Novel Approach ◽  
Hydrophobic Peptide

In this research, unzipped sulfanilic acid inspired hydrophobic peptide tube was synthesis by increasing the polarity of sulfanilic acid through nucleophilic attachment of aniline which then provided two reactive sites at the S-terminus. These two sites were then attached with the N-terminal of valine and alanine respectively at an intensity of 1000-1600 of 11 2θ (°). Through π-π stacking at the side chains, the opened ended peptide was linearly arranged to form the unzipped tube. Fourier transform infrared spectroscopy (FTIR) confirm the amine bond formation whiles X-ray diffraction test results confirmed D-spacing 7.36 and 4.44 corresponding 2θ (°)12 and 19.97 respectively whiles the torsion angles (Ø2) conformations was between-150.5°and-169.2° and-2 between-129.0° and-150.6°. The Thermogravimetric analysis result showed an increase in the rigidity of the bond with an increasing intensity. Finally, Differential scanning calorimetry (DSC) test was carried out to confirm the crystallinity of the structure. Keywords: Sulfanilic acid, hydrophobic Peptide, Unzipped tubes, Nanomaterial

scholarly journals Thermal Analyses of Polyol-Aqueous Solutions below 0.DEG.C. by Differential Scanning Calorimetry.

1997 ◽  
Vol 44 (5) ◽  
pp. 380-385 ◽  
Author(s):  
Tatsuya URAJI ◽  
Hiroyuki KOHNO ◽  
Kyoko NAKASHIMA ◽  
Makoto SHIMOYAMADA ◽  
Kenji WATANABE
Keyword(s):  
Differential Scanning Calorimetry ◽  
Aqueous Solutions ◽  
Thermal Analyses ◽  
Scanning Calorimetry
Sign in / Sign up

Export Citation Format

Share Document