Mathematical modeling of polystyrene particle size distribution produced by suspension polymerization

Dynamic Evolution of Droplet/Particle Size Distribution in Suspension Polymerization of Styrene

modeling loss data by phase-type distribution

بیمه گران همیشه بابت خسارات بیمه نامه های تحت پوشش خود نگران بوده و روش هایی را جستجو می کنند که بتوانند داده های خسارات گذشته را با هدف اتخاذ یک تصمیم بهینه مدل بندی نمایند. در این پژوهش توزیع های فیزتایپ در مدل بندی داده های خسارات معرفی شده که شامل استنباط آماری مربوطه و استفاده از الگوریتم em در برآورد پارامترهای توزیع است. در پایان امکان استفاده از این توزیع در مدل بندی داده های گروه بندی ...

Preparation of cassava starch grafted with polystyrene by suspension polymerization.

Cassava starch grafted with polystyrene (PS-g-starch) copolymer was synthesized via free-radical polymerization of styrene by using suspension polymerization technique. Potassium persulfate (PPS) was used as an initiator and water was used as a medium. The graft copolymer was characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, thermal gravimetric analysi...

Measurement of particle size distribution in suspension polymerization using in situ laser backscattering

Many methods have been developed for characterizing the particle size distribution (PSD) in a suspension polymerization reactor, but are restricted to suspensions with low volume fractions of polymer or to determining the PSD only at the end of the batch. Laser backscattering can be used to measure the chord length distribution for slurries with high particle densities. Here, a combination of i...

to control bead size distribution in suspension polymerization

suspension polymerization processes are significantly important in polymer bead formation. one of the important factors for bead size control in these processes is variation in surface tension. in this research, the prediction of optimum concentration of a surface active agent was investigated on the basis of the experimental surface tension diagrams. the experimental data show that the desired...