Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Representative SEM images of PMMA/HA composites produced using the HA microspheres with various HA contents of 20 vol % (A,C) and 40 vol % (B,D), showing distribution of the HA microspheres in the PMMA matrix (A,B) and interfacial bonding between the HA microspheres and PMMA (C,D). Yellow arrows indicate voids formed during the grinding process for SEM observations.
