Thermomechanical characterization of thermoplastic polyimide–polyurea to improve the chain interaction via internal hydrogen bonds

2019 ◽  
Vol 59 (9) ◽  
pp. 1948-1959 ◽  
Author(s):  
Alejandro Rivera Nicholls ◽  
Matthew Pellisier ◽  
Yesenia Perez ◽  
John Allan Stock ◽  
Ken Kull ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Internal Hydrogen ◽  
Chain Interaction ◽  
Thermomechanical Characterization

Thermomechanical characterization of thermoplastic polyimide to improve the chain interaction via crystalline domains

2019 ◽  
Vol 59 (9) ◽  
pp. 1919-1932 ◽  
Author(s):  
Alejandro Rivera Nicholls ◽  
Garrett Craft ◽  
Yesenia Perez ◽  
Matthew Pellissier ◽  
John A. Stock ◽  
...  
Keyword(s):  
Crystalline Domains ◽  
Chain Interaction ◽  
Thermomechanical Characterization

Structural Characterization of a Pentapeptide Derived from a Novel Carbohydrate α-Amino Acid

2007 ◽  
Vol 60 (2) ◽  
pp. 93 ◽  
Author(s):  
Adrian Scaffidi ◽  
Brian W. Skelton ◽  
Robert V. Stick ◽  
Allan H. White
Keyword(s):  
Amino Acid ◽  
Synchrotron Radiation ◽  
Hydrogen Bonds ◽  
Structural Characterization ◽  
Internal Hydrogen ◽  
Radiation Study ◽  
Independent Molecules

Subsequent to our previous report describing several novel carbohydrate α-amino acid dipeptides (and the structural characterization of one of those), and their extension to higher peptides, a synchrotron radiation study of one of those—a pentapeptide—showing its structure to be a well-defined helical array in each of two independent molecules, stabilized by internal hydrogen bonds, is reported.

Thermomechanical characterization of a fire clay refractory made of algerian kaolin

2012 ◽  
Vol 37 (2-4) ◽  
pp. 71-84 ◽  
Author(s):  
Mostafa Kolli ◽  
Mohamed Hamidouche ◽  
Noureddine Bouaouadja ◽  
Gilbert Fantozzi
Keyword(s):  
Fire Clay ◽  
Thermomechanical Characterization

4-(Piperidin-1-yl)pyridinium hexafluorophosphate at 150 K

2003 ◽  
Vol 59 (11) ◽  
pp. o622-o624 ◽  
Author(s):  
Bruce D. James ◽  
Siti Mutrofin ◽  
Brian W. Skelton ◽  
Allan H. White
Keyword(s):  
Hydrogen Bonds ◽  
Structural Characterization ◽  
Title Compound ◽  
Ion Pairs ◽  
Piperidine Ring ◽  
Torsion Angles ◽  
Compound C ◽  
Counter Ions

Structural characterization of the title compound, C10H15N2 +·PF6 −, shows it to be ionic, with the pyridine rather than the piperidine N atom being protonated and forming hydrogen bonds to the counter-ions, resulting in two independent ion pairs. A number of unusual features are noted, in particular the remarkably close inter-ring hydrogen contacts [1.97 (3)–2.00 (3) Å] and the considerable differences in the pair of cations, in respect of the torsion angles within the piperidine ring involving the bonds to either side of the N atom.

Stress-strain and thermomechanical characterization of nematic to smectic A transition in a strongly-crosslinked bimesogenic liquid crystal elastomer

Polymer ◽  
2018 ◽  
Vol 158 ◽  
pp. 96-102 ◽  
Author(s):  
Andraž Rešetič ◽  
Jerneja Milavec ◽  
Valentina Domenici ◽  
Blaž Zupančič ◽  
Alexey Bubnov ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Stress Strain ◽  
Liquid Crystal Elastomer ◽  
Smectic A ◽  
Thermomechanical Characterization

scholarly journals Synthesis and Characterization of [2-CH3CH2C6H4NH3]6P6O18⋅4H2O

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Houda Marouani ◽  
Salem Slayyem Al-Deyab ◽  
Mohamed Rzaigui
Keyword(s):  
Hydrogen Bonds ◽  
Electrostatic Interactions ◽  
Three Dimensional ◽  
Spectroscopic Studies ◽  
Monoclinic System ◽  
Dimensional Network ◽  
Cell Dimensions ◽  
Unit Cell Dimensions ◽  
Ir Spectroscopic

Single crystals of [2-CH3CH2C6H4NH3]6P6O18⋅4H2O are synthesized in aqueous solution by the interaction of cyclohexaphosphoric acid and 2-ethylaniline. This compound crystallizes in the monoclinic system with P21/c space group the unit cell dimensions are: a=16.220(4) Å, b=10.220(5) Å, c=20.328(4) Å, β=113.24(3)∘, Z=2, and V=3096.5(18) Å3. The atomic arrangement can be described by layers formed by cyclohexaphosphate anions P6O186− and water molecules connected by hydrogen bonds O–H⋯O. These inorganic layers are developed around bc planes at x=1/2 and are interconnected by the H-bonds created by ammonium groups of organic cations. All the hydrogen bonds, the van der Waals contacts and electrostatic interactions between the different entities give rise to a three-dimensional network in the structure and add stability to this compound. The thermal behaviour and the IR spectroscopic studies of this new cyclohexaphosphate are discussed.

scholarly journals Measurements and Stochastic FEA with Application in Thermomechanical Characterization of Electronic Packages

2016 ◽  
Vol 48 (6) ◽  
pp. 700-714
Author(s):  
Omar Bendaou ◽  
◽  
Othmane Bendaou ◽  
François Bourzeix ◽  
Mohamed Agouzoul ◽  
...  
Keyword(s):  
Electronic Packages ◽  
Thermomechanical Characterization
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