Using an appropriate mixing method for synthesizing nanoparticle based polyurethane foam is crucial because nanoparticles are very cohesive. which hinder their uniform dispersion. In this study. ultrasonic dispersion (UD) was adopted to enhance the dispersion of nanoparticles in a polyurethane foam (PUF) containing a silica aerogel and glass bubbles (SG-PUF). https://parisnaturalfoodes.shop/product-category/liquid-vitamin-d/