Reconsideration of kinetic theories of polymer crystal growth with chain folding

1979 ◽  
Vol 68 ◽  
pp. 167 ◽  
Author(s):  
Jean-Jacques Point
Keyword(s):  
Crystal Growth ◽  
Chain Folding ◽  
Polymer Crystal

A New Defect in Polyethylene Single Crystals

1973 ◽  
Vol 31 ◽  
pp. 70-71
Author(s):  
E. L. Thomas ◽  
S. L. Sass
Keyword(s):  
Single Crystals ◽  
Screw Dislocation ◽  
Small Distance ◽  
Dipole Model ◽  
Dislocation Dipole ◽  
Chain Folding ◽  
Black And White ◽  
Polymer Crystal ◽  
Different Types

In polyethylene single crystals pairs of black and white lines spaced 700-3,000Å apart, parallel to the [100] and [010] directions, have been identified as microsector boundaries. A microsector is formed when the plane of chain folding changes over a small distance within a polymer crystal. In order for the different types of folds to accommodate at the boundary between the 2 fold domains, a staggering along the chain direction and a rotation of the chains in the plane of the boundary occurs. The black-white contrast from a microsector boundary can be explained in terms of these chain rotations. We demonstrate that microsectors can terminate within the crystal and interpret the observed terminal strain contrast in terms of a screw dislocation dipole model.

scholarly journals Viscosity solutions for a polymer crystal growth model

2011 ◽  
Vol 60 (3) ◽  
pp. 895-936
Author(s):  
Pierre Cardaliaguet ◽  
Olivier Ley ◽  
Aurelien Monteillet
Keyword(s):  
Crystal Growth ◽  
Growth Model ◽  
Viscosity Solutions ◽  
Polymer Crystal

Polysynthetic Twinning in Poly(vinylcyclohexane) Single Crystals and “Fractional” Secondary Nucleation in Polymer Crystal Growth

2006 ◽  
Vol 39 (3) ◽  
pp. 1008-1019 ◽  
Author(s):  
Daniel Alcazar ◽  
Jrjeng Ruan ◽  
Annette Thierry ◽  
Akiyoshi Kawaguchi ◽  
Bernard Lotz
Keyword(s):  
Crystal Growth ◽  
Single Crystals ◽  
Secondary Nucleation ◽  
Polymer Crystal ◽  
Polysynthetic Twinning
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