Abstract
Positron annihilation lifetime (PAL) and Doppler broadening (DB) measurements were carried out in four semicrystalline polymer samples, viz., polycarbonate (PC), acrylonitrile–butadiene–styrene (ABS), polytetrafluoroethylene (PTFE), and Nylon 6, 6 (PA). A correlation between the S and W-parameters which reflect the electron momentum, and the ortho-positronium (o-Ps) lifetime reflecting the electron densities in free volume sites is observed. Interestingly, the present results support the known intuition that o-Ps has a higher momentum component compared to p-Ps and free annihilations but different from that observed by Davies and Pethrick.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Physica Status Solidi A-applications and Materials Science
Paper Title
Journal
Date
