Once the desired operating conditions were established, the system was monitored for 1 h using PEPT.
A PEPT experiment was carried out as described in the Positron Emission Particle Tracking (PEPT) Procedure section, using the experimental conditions described in the Coating Study section.
This approach was chosen because PEPT generally locates axial coordinates more accurately than radial ones.
The statistical model was used to predict coating mass distributions for the experiments described in the Coating Study section, using the parameters determined in the Coating Study and Model Parameters Derived from PEPT Measurement Data sections as follows:
The parameters required in the model were obtained experimentally from spray angle measurements and particle motion studies using PEPT.
In the same manner, a series of PEPT copolyesters with other compositions were prepared by varying the proportions of the DMT and DMP monomers with respect to that of the EG monomer.
In fact, the Mark-Houwink-Sakurada constants used in this study were measured only for the PET homopolymer, rather than for the PEP homopolymer and PEPT copolymers.
g2] are the glass transition temperatures of the PEPT copolymer, the PET homopolymer.