Polypropylene (PP) is a popular polymer known for its versatile applications, including packaging, textiles, automotive components, and more. An inherent property of polypropylene is its electrostatic behavior, which can be both an advantage and a challenge. PP is a non-conductive material, which means it can accumulate static charges on its surface when subjected to friction or separation. This electrostatic buildup can attract dust and particles, complicating cleaning and handling processes. However, this property can also be harnessed for applications requiring static elimination or reduction. To modify its electrostatic properties, polypropylene can be treated with antistatic agents or blended with conductive materials, enhancing its suitability for various industrial applications. These modifications can reduce surface resistivity, thus diminishing the propensity for static accumulation and improving PP's application range.

The presence of inherent defects. such as pores or interstitial spaces. within the lattice structure of titanium dioxide TiO2 can greatly affect its heat transfer performance. These imperfections hinder thermal conductivity by scattering phonons. which are the primary heat carriers in insulators. As the amount of thermal energy rises. so does the concentration of these defects. resulting in increased scattering and decreased efficiency in heat transfer. Therefore. comprehending and managing this defect concentration is crucial for tailoring TiO2 to various uses. such as thermoelectric devices and thermal barrier coatings.

Polypropylene glycol (PPG) is considered to be of low toxicity when used appropriately. It is a polymer of propylene oxide and is used in a variety of products, including cosmetics, pharmaceuticals, and food. The toxicity level of PPG can vary depending on its molecular weight; lower molecular weight variants can be more easily absorbed by the body and might exhibit higher toxicity than those with higher molecular weights. Generally, PPG is recognized as safe when used in limited amounts in products intended for human use. However, as with any chemical substance, excessive exposure or ingestion could lead to adverse health effects. It's important to follow safety guidelines and product instructions when handling or using products containing PPG.