Small angle scattering study of polyethylene crystallization from solutions
Document Type
Article
Publication Date
4-24-2007
Department
Department of Materials Science and Engineering
Abstract
Crystallization of low molecular weight polyethylene from concentrated solutions has been studied using small angle neutron scattering (SANS). The detection sensitivity of the volume fraction degree of crystallinity is estimated to be 10-5, allowing for measuring the structure and kinetics during the very early stages of crystal growth. SANS spectra for both the early and late stages of crystallization can be satisfactorily interpreted with a lamellar crystal model; there is no evidence of diverging or spinodal-decomposition-like density fluctuations during the early stage of crystallization in polyethylene solutions. A possible explanation of the dominant wavevector in small angle x-ray scattering that led to the proposal of "spinodal decomposition" mechanism for early stage crystallization is suggested.
Publication Title
Lecture Notes in Physics
Recommended Citation
Wang, H.
(2007).
Small angle scattering study of polyethylene crystallization from solutions.
Lecture Notes in Physics,
714, 169-178.
http://doi.org/10.1007/3-540-47307-6_10
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4009