Equation icon  Degree of crystallinity

 
Use this resource: Use this resource icon
Link to this page: http://core.materials.ac.uk/search/detail.php?id=3204
View at:        
Resource type: Equation
Description: This equation is used to determine the percentage crystallinity for a semi-crystalline sample by the measured density of the sample and of the densities of the fully crystalline and fully amorphous states (assuming no voids are present).

TeX format: \% C = \frac{\rho_c}{\rho_s} \left ( \frac{\rho_s -\rho_a}{\rho_c - \rho_a} \right ) \times 100

%C {\% C} = crystallinity of sample (%) {\%}
ρs {\rho_s} = density of crystalline solid (kg.m-3) {kg.m^{-3}}
ρa {\rho_a} = density of amorphous solid (kg.m-3) {kg.m^{-3}}
ρc {\rho_c} = density of sample with unknown & crystallinity (kg.m-3) {kg.m^{-3}}

Keywords: polymer • crystallinity • semi-crystalline • solidification • density • analysis • plastic
Categories: Science approaches
Science approaches > Structure, bonding & defects > Crystal structure
Science approaches > Microstructure
Materials > Polymers & elastomers
Processes > Thermal treatments
Testing, analysis & experimentation
Created by: The University of Liverpool
License: This resource is released under the Creative Commons Attribution license (2.0 UK: England & Wales).
Creative Commons Attribution logo
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
View the full legal code here.
Date created: 18 August 2010
Date added: 14 September 2010
Package:
Resource ID: 3204