1. Stabilizers One of the most critical functions of additives in plastics is to protect the material from degradation due to exposure to environmental factors, such as heat, light, and oxygen. Stabilizers, such as antioxidants, UV stabilizers, and thermal stabilizers, are incorporated into plastic formulations to extend their lifespan. For example, ultraviolet (UV) stabilizers prevent discoloration and brittleness that can occur when plastics are exposed to sunlight.
One of the primary functions of excipients is to enhance the stability of the API. Many APIs are sensitive to environmental factors like humidity and light, which can degrade their efficacy over time. Excipients can create a protective matrix around the API, shielding it from these detrimental effects, and ensuring the longevity of the medication. Moreover, excipients can facilitate the dissolution and absorption of the API in the gastrointestinal tract, thereby enhancing bioavailability. For example, in formulations aimed at oral delivery, disintegrants are utilized to help the solid form of medication break down in the digestive system, allowing for faster absorption of the API into the bloodstream.
One of the most significant applications of polyacrylamide is in the field of water treatment. It functions as a flocculant, aiding in the aggregation of suspended particles in water, which makes it easier to remove impurities. This is particularly beneficial in municipal water treatment facilities and in industries dealing with wastewater.
polyacrylamide pdf
At its core, stability testing involves the systematic evaluation of how the quality of a product varies with time under the influence of a variety of environmental factors, such as temperature, humidity, and light. The primary goals are to determine the expiration date and the appropriate storage conditions for APIs and FPPs. Conducting these tests is essential not only for regulatory compliance but also for the assurance of patient safety.
Fillers can be defined as inert substances added to a polymer matrix to improve its physical and mechanical properties without significantly altering its fundamental characteristics. They can be used to modify various aspects of polymers, including strength, stiffness, thermal stability, and overall cost. Fillers can be categorized into two main types