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Stearyl Methacrylate: A Hydrophobic Monomer for Polymer Modification and Synthesis
2023/5/23
Stearyl methacrylate (SMA) is an ester of methacrylic acid and stearyl alcohol. It is a mixture of mainly C16 (cetyl) and C18 (stearyl) methacrylates. It has a molecular formula of C23H44O2 and a molecular weight of 338.57 g/mol. It is a clear, colorless liquid with a melting point of 18-20 °C and a boiling point of 195 °C/6 mmHg. It has a low viscosity and a high hydrophobicity. It contains monomethyl ether hydroquinone (MEHQ) as an inhibitor to prevent unwanted polymerization during storage.
SMA can be polymerized by various methods such as free radical polymerization, atom transfer radical polymerization (ATRP), reversible addition-fragmentation chain transfer (RAFT) polymerization, and ring-opening metathesis polymerization (ROMP). The resulting polymers have a long pendant aliphatic chain and a high reactivity of methacrylates. They can be used for applications in oil additives, concrete and paper coatings, textile finishes, varnishes, pressure-sensitive adhesives, anti-slip coatings, and emulsifiers.
SMA can also be used as a modifier of other (meth)acrylate resins to improve their properties such as water resistance, abrasion resistance, weatherability, and flexibility. For example, SMA can be blended with epoxy resins to reduce their viscosity and enhance their toughness. SMA can also be copolymerized with other monomers such as styrene, methyl methacrylate, vinyl acetate, vinyl chloride, vinylidene chloride, butadiene, unsaturated polyesters and drying oils to obtain copolymers with different characteristics.
SMA is a versatile monomer that can be used to create polymers with various applications in different fields. It is an important building block for the modification and synthesis of hydrophobic materials that have superior performance and functionality.
SMA can be polymerized by various methods such as free radical polymerization, atom transfer radical polymerization (ATRP), reversible addition-fragmentation chain transfer (RAFT) polymerization, and ring-opening metathesis polymerization (ROMP). The resulting polymers have a long pendant aliphatic chain and a high reactivity of methacrylates. They can be used for applications in oil additives, concrete and paper coatings, textile finishes, varnishes, pressure-sensitive adhesives, anti-slip coatings, and emulsifiers.
SMA can also be used as a modifier of other (meth)acrylate resins to improve their properties such as water resistance, abrasion resistance, weatherability, and flexibility. For example, SMA can be blended with epoxy resins to reduce their viscosity and enhance their toughness. SMA can also be copolymerized with other monomers such as styrene, methyl methacrylate, vinyl acetate, vinyl chloride, vinylidene chloride, butadiene, unsaturated polyesters and drying oils to obtain copolymers with different characteristics.
SMA is a versatile monomer that can be used to create polymers with various applications in different fields. It is an important building block for the modification and synthesis of hydrophobic materials that have superior performance and functionality.
