Characterization of the Denatured States Distribution of Neocarzinostatin by Small-Angle Neutron Scattering and Differential Scanning Calorimetry†

Biochemistry ◽  
2001 ◽  
Vol 40 (13) ◽  
pp. 3958-3966 ◽  
Author(s):  
D. Russo ◽  
D. Durand ◽  
P. Calmettes ◽  
M. Desmadril
Keyword(s):  
Differential Scanning Calorimetry ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Scanning Calorimetry ◽  
Denatured States

Small-angle neutron scattering and differential scanning calorimetry study of associative behaviour of branched poly(ethylene oxide)/poly(propylene oxide) copolymer in aqueous solution

2003 ◽  
Vol 36 (4) ◽  
pp. 970-975 ◽  
Author(s):  
J. Pleštil ◽  
H. Pospíšil ◽  
A. Sikora ◽  
I. Krakovský ◽  
A. I. Kuklin
Keyword(s):  
Differential Scanning Calorimetry ◽  
Ethylene Oxide ◽  
Neutron Scattering ◽  
Propylene Oxide ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Scanning Calorimetry ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Poly Propylene

Tetronic RED 9040, a reverse-type [poly(propylene oxide) as terminal blocks] octablock star copolymer with four poly(ethylene oxide)/poly(propylene oxide) arms attached to the ethylenediamine core was studied in D2O at concentrations between 1 and 60 g dL−1in the temperature range from 283 to 353 K. Depending on concentration and temperature, various structures (unimers, random network, micelles, micellar aggregates, micellar networks) were indicated by small-angle neutron scattering (SANS). Some structure characteristics of unimers, micelles and micellar networks have been determined by fitting model scattering functions to the SANS data. A competition between the increasing association number and dehydration of the micelles is suggested as a possible explanation of the observed non-monotonic temperature dependence of the structure parameters of concentrated systems. A partial phase diagram was suggested on the basis of SANS and differential scanning calorimetry (DSC) data and visual inspection of the solutions.

A Deformation-Induced Phase Separation in the Solid State

1986 ◽  
Vol 79 ◽  
Author(s):  
J. M. Lefebvre ◽  
R. S. Porter ◽  
G. D. Wignall
Keyword(s):  
Differential Scanning Calorimetry ◽  
Phase Separation ◽  
Solid State ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Scanning Calorimetry

AbstractAmorphous Polymethylmethacrylate/Polyethyleneoxide blends deformed by solid-state coextrusion exhibit anomalous anisotropic Small Angle Neutron scattering patterns in the low q range. It is shown that upon drawing the samples have undergone phase separation to some extent. The resulting structure of the system is characterized by combining scattering techniques with Differential Scanning Calorimetry.

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