Relationship between Macromolecular Structure and Glass Transition Temperature.

The slope equations: A universal relationship between local structure and glass transition temperature

In this article, we present a universal relationship between the glass transition temperature Tg and the local glass structure. The derivation of the simplest expression of this relationship and some comparisons with experimental Tg values have already been reported in a recent letter. We give here the analytical expression of the parameter β of the Gibbs-Di Marzio equation and also new experim...

The Slope Equations : a Universal Relationship between Local Structure and Glass Transition Temperature

Relationship between the Glass Transition Temperature and the Interaction Parameter of Miscible Binary Polymer Blends

An equation that relates the g h transition temperature, TE, and a binary interaction parameter, x, for miscible binary polymer blends was derived. The equation including no adjustable parameters was based on a thermodynamic mixing formalism using enthalpy as the thermodynamic parameter. The enthalpy of mixing was written as a van Laar expression, and the T, was formally treated as a second-ord...

structure/glass transition temperature relationship of pvac-b-poly(ma-co-mma) terpolymers with theoretical and topological methods

the glass transition temperature of several pvac(1)-b-poly(ma-co-mma) (2) terpolymers with different fractions of methyl acrylate (ma) and methyl methacrylate (mma) repeating units in random copolymer (block 2) were calculated with barton, kwei and topological equations. the calculation was on the basis of the correlation between the fraction of repeating units in random copolymers and theoreti...

Influence of Network Structure on Glass Transition Temperature of Elastomers

It is generally believed that only intermolecular, elastically-effective crosslinks influence elastomer properties. The role of the intramolecular modifications of the polymer chains is marginalized. The aim of our study was the characterization of the structural parameters of cured elastomers, and determination of their influence on the behavior of the polymer network. For this purpose, styren...