Braskem, a leading petrochemical company in the Americas and one of the largest producers of polypropylene (PP), adjusts its PP pricing based on factors such as raw material costs (principally propylene), supply-demand dynamics, and regional economic conditions. Prices are subject to fluctuation due to the volatile nature of the petrochemical market, which is influenced by oil prices, geopolitical events, and trade policies. Customers might see variations in pricing based on these parameters. For the most current pricing, it's advisable to contact Braskem directly or consult with distributors. Companies using PP in their manufacturing processes should monitor these factors and consider long-term contracts to mitigate price volatility. Additionally, exploring alternative suppliers or materials could provide cost-saving opportunities.

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. Its structural formula can be simplified as (-CH2-CH2-)n, symbolizing a long chain of ethylene units. Unlike its high-density counterpart, LDPE features a more branched structure, resulting in a lower density and melting point. This structure gives LDPE its characteristic flexibility, making it ideal for applications like plastic bags, containers, and tubing. The number of branches and the length of the polymer chain can vary, affecting the polymer's properties. LDPE is produced through a high-pressure polymerization process, which leads to its unique branching and overall structure.

Cohesion and adhesion are two fundamental concepts in physics that can describe the forces between molecules. Cohesion describes the intermolecular force, by which like molecules stick together. This force is due to an electrostatic attraction between molecules of the same substance. One fine example of cohesion is the surface tension of water that can support certain insects on the water's surface. Again, adhesion is any physical force leading to the attraction of dissimilar or unrelated molecules to bond. The forces of attraction between dissimilar materials dominate over the repulsive forces. An example of adhesion is the climbing of water up a thin glass tube (capillary action) because of the attraction between the water molecules and the glass surface. These two forces play a conjoined role in many natural and technological processes.