The price of polypropylene plastic in the commodities market is influenced by several factors including crude oil prices, supply and demand dynamics, manufacturing costs, and geopolitical events. As a derivative of petroleum, polypropylene's price is closely tied to the oil market. Fluctuations in oil prices can lead to similar trends in polypropylene costs. Demand for polypropylene, a versatile plastic used in packaging, automotive parts, and textiles, also significantly impacts its price. Additionally, production costs and geopolitical issues, such as trade policies and sanctions, can affect supply chains, thereby influencing market prices. To navigate this volatile market, stakeholders often monitor global economic indicators and oil price movements.

Polypropylene (PP) is a thermoplastic polymer widely known for its resistance to various chemical solvents, bases, and acids, making it a popular choice for containers and pipework for chemicals. Its structure, characterized by a semi-crystalline nature, contributes to its physicochemical properties. Specifically, regarding oil absorption, polypropylene's hydrophobic nature allows it to effectively repel water while having the affinity to absorb oils and other non-polar substances. This characteristic is utilized in applications such as oil spill clean-ups, industrial oil/water separators, and filters for removing oil from water. The efficiency of polypropylene in oil absorption is influenced by the surface area, pore size of the material, and the viscosity of the oil. Advancements in material science have aimed at enhancing these properties through modifications at the molecular or composite level to increase oil absorption rates and capacities. For instance, creating polypropylene-based absorbents with larger surface areas or specific functional groups can improve oil affinity and uptake. Accordingly, polypropylene remains a material of choice for environmental cleanup efforts and industrial applications requiring efficient oil separation and absorption.

Once PVC cement is applied and set, removing it is challenging because it chemically bonds PVC materials together, creating a virtually inseparable joint. However, for excess cement or spills, you can try using acetone or a similar solvent to soften and remove it. Firstly, apply the solvent to a cloth and gently rub the affected area. This method is more effective on fresh spills. For hardened cement, mechanical means like sanding or scraping might be necessary, but this could damage the PVC surface. Always wear protective gear and work in a well-ventilated area when using solvents.