Size analysis of polymer latex powder. Comparison of results obtained by means of the I.C.I.–Joyce, Loebl disk centrifuge, the coulter counter, and the electron microscope


  • Prod. No. 1538


The volume frequency size distribution of PVC latex powder was determined by means of three different methods, which all gave the same frequency maximum at about 0.8–0.9 μ diameter. While the electron microscope analysis, which allows the agglomerates to be resolved into individual primary particles, did not show any particles above 1.5 μ in a sample of 9000, both the Coulter counter and the disk centrifuge showed a considerable amount of larger particles.