Polylactic acid (PLA) is a widely used synthetic biodegradable polymer known for its transparency, rigidity, and high structural regularity. Derived from renewable resources such as corn starch or sugarcane, PLA consists of lactic acid monomers linked through ester bonds. These ester bonds undergo hyd...
All these technologies use a liquid material, namely a thermoset polymer. The liquid resin is held in a vat onto which a laser or light source is flashed. This laser or light cures (hardens) the material to make it solid one layer at a time. This process is repeated again and again ti...
Elemental P: Nearly all P on Earth is in the oxidized form, as phosphate (PO4). However, various industrial processes involve production and use of two molecular forms of elemental P: white phosphorus (P4) and red phosphorus (a polymer based on the P4 unit). These forms of P are used...
At present, most ofhalogen free PCBmaterials are mainly phosphorus and phosphorus nitrogen series. When the phosphorus containing resin is burned, it will decompose into metapolyphosphoric acid, which has strong dehydration property, forms carbonization film on the surface of polymer resin, insulates t...
Electrospinning is a voltage-driven, fabrication process governed by a specific electrohydrodynamic phenomenon where small fibers are yielded from a polymer solution. The most basic setup for this technique involves a solution contained in a reservoir — typically a syringe — tipped with a blunt ...
Polymer chemistry develops polymeric ("plastic") materials for industrial uses. Connecting individual polymer molecules by cross-links (red) increases the strength of the material. Thus ordinary polyethylene is a fairly soft material with a low melting point, but the cross-linked form is more rigid...
Polymer Chemistry - Introduction, Importance and Concepts Polymerization – Types, Techniques and Degree Polymers Polymers Uses Polymethyl Methacrylate Polymorphism Polypeptide - Structure, Levels, Classes and Amino Acid Polypropylene Polysaccharides Polystyrene Polytetrafluoroethylene Polyurethane Foam Polyvinyl Aceta...
plasma can clean, activate, or chemically modify surfaces. As such, plasma treatment can be applied to many different materials as well as complex surface geometries, including glass coverslips and slides, semiconductor wafers, polymer fibers and fibrous scaffolds, oxide and metal nanoparticles, and ...
so that a carbonized film is formed on the surface of the polymer resin, which insulates the burning surface of the resin from contact with air, extinguishes the fire, and achieves a flame-retardant effect. The polymer resin containing phosphorus and nitrogen compounds generates incombustible gas...
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