Interdiffusion in a particle matrix system of two miscible polymers: An investigation by positron annihilation lifetime spectroscopy and differential scanning calorimetry

2002 ◽  
Vol 84 (3) ◽  
pp. 654-664 ◽  
Author(s):  
G. Dlubek ◽  
C. Taesler ◽  
G. Pompe ◽  
J. Pionteck ◽  
K. Petters ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Positron Annihilation ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Matrix System ◽  
Scanning Calorimetry ◽  
Positron Annihilation Lifetime

Hexadecane in SiO2 Aerogels

2012 ◽  
Vol 733 ◽  
pp. 107-110 ◽  
Author(s):  
Barbora Sláviková ◽  
M. Miklošovičová ◽  
E. Illeková ◽  
V. Majerník ◽  
O. Šauša ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Pore Size ◽  
Positron Annihilation ◽  
Average Pore Size ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Scanning Calorimetry ◽  
Average Pore ◽  
Positron Annihilation Lifetime ◽  
Sio2 Aerogel

This work deals with the use of positron annihilation lifetime spectroscopy (PALS) for the study of hexadecane confined in SiO2 aerogel. The temperature dependencies of the o-Ps lifetime and intensity for this material were compared with values of hexadecane confined in silicagel with a similar average pore size. The results of differential scanning calorimetry (DSC) for both these materials will be discussed.

scholarly journals Analysis of Swelling Process of Biopolymer Gel by Positron Annihilation Lifetime Measurement and Differential Scanning Calorimetry

RADIOISOTOPES ◽  
2006 ◽  
Vol 55 (9) ◽  
pp. 525-531 ◽  
Author(s):  
Hiroko MIMACHI ◽  
Yoko AKIYAMA ◽  
Shin-ichi TAKEDA ◽  
Yoshinobu IZUMI ◽  
Yoshihide HONDA ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Positron Annihilation ◽  
Lifetime Measurement ◽  
Scanning Calorimetry ◽  
Positron Annihilation Lifetime

Characterization of Thermotropic Liquid Crystalline Polymer Blends by Positron Annihilation Lifetime Spectroscopy

1992 ◽  
Vol 274 ◽  
Author(s):  
Robert A. Naslund ◽  
Phillip L. Jones ◽  
Andrew Crowson
Keyword(s):  
Positron Annihilation ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Scanning Calorimetry ◽  
Positron Annihilation Lifetime ◽  
Crystalline Polymers ◽  
Thermoplastic Matrix ◽  
Thermotropic Liquid Crystalline Polymers ◽  
Molecular Composites

ABSTRACTPositron annihilation lifetime spectroscopy (PALS) is used to investigate polymer-based molecular composites of two separate thermotropic liquid crystalline polymers (TLCPs) and the thermoplastic matrix polyetherimide. Trends in PALS spectral components obtained isothermally at 20°C and 120°C as a function of TLCP content are discussed as a function of free volume and molecular structure. Differential scanning calorimetry was employed as a complementary technique to investigate the differences in miscibility of the two systems and possible effects on positron lifetime values.

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