Synthesis and characterization of butyl acrylate-co-poly (ethylene glycol) dimethacrylate obtained by microemulsion polymerization

• Published in: Designed monomers and polymers Vol. 23; no. 1; pp. 40 - 49
• Main Authors: Alvarado, Abraham G., Rabelero, Martin, Aguilar, Jacobo, Flores Mejia, Jorge, Moscoso Sánchez, Francisco J.
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis 01.01.2020; Taylor & Francis Ltd; Taylor & Francis Group
• Subjects: Acrylics; Chemical synthesis; Copolymers; Emulsion polymerization; Fourier transforms; gel; Glass transition temperature; Glycol dimethacrylates; Gravimetry; Infrared spectroscopy; Latex; microemulsion; Microemulsions; n-butyl acrylate; Photon correlation spectroscopy; poly(Ethylene glycol) dimethacrylate; Polyethylene glycol; Review; Stability; Temperature; Thermodynamic properties; Thermogravimetry; copolymers; n-butyl acrylate; microemulsion; poly(Ethylene glycol) dimethacrylate; gel
• ISSN: 1385-772X; 1568-5551; 1568-5551
• DOI: 10.1080/15685551.2020.1739506

The synthesis and characterization of copolymers of n-Butyl Acrylate (BA) and Poly(ethylene glycol) dimethacrylate (PEGDMA) were realized by microemulsion. In this synthesis, the relation of PEGDMA 10, 20, 30, 40 and 50% wt with respect to BA was changed. The copolymers obtained were characterized by the determination of conversions (gravimetry), infrared spectroscopy: Fourier transform (FTIR), dynamic light scattering (DLS), thermogravimetry (TGA) and differential scanning calorimetry (DSC). The results confirmed the synthesis of BA-co - PEGDMA copolymers by the identification of characteristic FTIR bands and which determined the glass transition temperature of the copolymers. The conversions were found in the range of 85% to 90%. Within the stability of the produced latex, it was observed that at 10% and 30% wt. of PEGDMA the systems were stable, but when more PEGDMA was added up 40% to 50% wt., the system became unstable. The stability of produced latexes depends on the PEGDMA contents and this must be less than 30% wt.; meanwhile the PEGDMA content greater than 30% wt. leads to unstable latexes, forming clots. Copolymers showed single glass transition temperatures between −53.37°C and −16.58°C, depending on the composition of PEGDMA in the copolymers. Resulting in the different arrangements of units of PEGDMA along in the chain affected the thermal properties of the final copolymers.