The glass transition temperature of polymer melts

Article Abstract:

An analytic theory to estimate the glass transition temperature T(sub g) of polymer melts as a function of the relative rigidities of the chain backbone and high groups, the monomer structure, pressure and polymer mass are described. The elucidation of the molecular origins of T(sub g) in polymer liquids should be useful in designing and processing new synthetic materials and for understanding the dynamics and controlling the preservation of biological substances.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Determination of the dieletric constant of nanoparticles. 1. Dielectric measurements of buckminsterfullerene solutions

Article Abstract:

The static dielectric constant epsilon of buckminsterfullerene C(sub 60) particles is determined in cis-decalin, toluene and 1,2-dichlorobenzene using continuum models for spherical and spherical shell illusions. The conclusion states that viral measurements have a great potential for determining the effective properties of nanoparticles from the properties of nanofilled materials over a range of dilute filer concentrations.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Dual luminescence and excited-state dynamics in Ti(super 2+) doped NaCl

Article Abstract:

Single crystals of Ti(super 2+) doped NaCl are grown with the help of the Bridgeman technique. For the spectroscopic characterization of the title compound high resolution variable temperature absorption, continuous-wave emission, and time-dependent measurements are performed.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code: