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

摘要

AbstractThe 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 partic