Glyceryl Monostearate (GMS) is distinguished as a plastic additive primarily due to its exceptional dual functionality as both an internal and external lubricant. It significantly enhances polymer melt flow, reduces processing friction, and improves mold release. As a naturally derived, non-ionic surfactant, GMS also acts as an effective dispersing agent, promoting the homogeneous distribution of fillers (such as calcium carbonate) within the polymer matrix, thereby improving the mechanical properties and surface finish of the final product. Its paramount advantages are its safety profile and environmental compatibility. Being non-toxic, biodegradable, and compliant with stringent international regulations for food-contact and medical applications, GMS serves as a key replacement for higher-risk synthetic additives. Furthermore, it offers ancillary benefits including antistatic and antifogging properties, all while providing a high cost-performance ratio due to its low required dosage. Products that specifically benefit from the incorporation of GMS span several high-demand sectors: 1. Food Packaging: Used in PVC, PP, and PE films, containers, and cups to ensure compliance with food safety standards while improving processability. 2. Medical & Consumer Goods: Essential for medical devices like PVC tubing and bags, as well as toys and childcare products, where non-toxicity and low migration are critical. 3. Building & Construction: Widely employed in PVC profiles (windows, doors) and pipes to facilitate smooth extrusion, increase output, and enhance surface quality. 4. Agricultural Films: Used in PE/PVC greenhouse films for its persistent antifogging effect, which minimizes water droplet condensation and improves light transmission. 5. Biodegradable Plastics & Filled Compounds: Plays a crucial role in processing biopolymers like PLA/PBAT by improving melt stability. It is also indispensable in highly filled polyolefin systems, where it prevents filler agglomeration and reduces melt viscosity.
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