Definition Condensation polymerization, also known as polycondensation, is a polymerization process in which two or more monomers containing two or more reactive functional groups combine to form polymer chains while simultaneously releasing small molecules such as water, hydrogen chloride, methanol,…
Definition Solution polymerization is a polymer manufacturing process in which the monomer is dissolved in a suitable solvent before polymerization takes place. The reaction is initiated by heat or chemical initiators, with the solvent serving as the reaction medium to…
Definition Bulk polymerization, also known as mass polymerization, is a polymer production process in which the monomer polymerizes without the addition of solvents or dispersion media. Under the influence of heat, light, radiation, or chemical initiators, the monomer undergoes polymerization…
Definition Green chemistry, also known as environmentally benign chemistry, is the design of chemical products and processes that reduce or eliminate the use and generation of hazardous substances throughout the entire chemical lifecycle. Its objective is to maximize resource utilization…
Definition Suspension polymerization, also known as bead polymerization, is a polymer manufacturing process in which water-insoluble monomers are mechanically dispersed as droplets in a continuous medium, typically water, with the aid of dispersing agents. Polymerization occurs within these suspended droplets,…
Definition Emulsion polymerization is a polymer manufacturing process in which water-insoluble monomers are dispersed in water with the aid of surfactants (emulsifiers) and polymerized under mechanical agitation. Polymerization occurs within finely dispersed droplets or micelles, producing a stable polymer latex.…
Definition Ring-opening polymerization (ROP) is a polymerization process in which cyclic monomers undergo ring opening in the presence of an initiator or catalyst to form linear polymer chains. Unlike conventional addition polymerization, ring-opening polymerization converts the ring structure of the…
Definition Polymerization is a chemical reaction in which one or more monomers combine to form high-molecular-weight polymers without producing low-molecular-weight by-products. Depending on the monomers involved, polymerization may produce either homopolymers (from a single monomer) or copolymers (from two or…
Definition A non-Newtonian fluid is any fluid whose viscosity varies with applied shear stress or shear rate, rather than remaining constant as described by Newton’s law of viscosity. Unlike Newtonian fluids such as water or air, non-Newtonian fluids exhibit changes…