Defects in the molecular structure of polyvinylchloride and their relation to thermal stability

Abstract

Abstract

The electromagnetic properties of blends of poly(p-phenylene-vinylene) derivatives

“…After the reaction, the amine groups could be assigned to that of the extremity of the molecule. The PVC was choosen as host matrix for conducting phase PV-B-BA because of its high purity [11]. It has been shown that impurity could give rise to relaxation phenomenon at a more or less high frequency, or perturbs the dielectric properties of the conducting polymer [12].…”

On the molecular microstructure dependence of space charge trapping in polymers

“…8 Samples A1 and A2 are sample A after substitution reaction with sodium benzenethiolate (NaBT) in cyclohexanone (CH) solution up to molar conversions of 1É1% and 5%, respectively. Sample D is sample B after a substitution reaction with NaBT in the molten state up to 0É95 mol%.…”

Microkinetic Modeling of Structural Properties of Poly(vinyl chloride)

“…Long chain branches are formed when mid chain radicals (R (6) and R (7) in Figure 2), formed by an intermolecular hydrogen abstraction, add to monomer: viz. Figure 2.…”

“…Since both radicals R (6) and R (7) result from H-abstraction reactions involving a polymer molecule, long chain branches can only be formed in the polymer-rich phase since polymer molecules that are formed in the monomer-rich phase are considered to immediately precipitate into the polymer-rich phase.…”