PREPARATION OF POLYDIMETHLSILOXANE NANOEMULSION

• Main Author: Irawan, Andi
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/72831
• Institution: Institut Teknologi Bandung

Polydimethylsiloxane (PDMS) is the world’s most common silicon based organic polymer. Physical structure of PDMS that generally produced, beside fluid, is emulsion. Its applications range from anti-foam agents to textile enhancing. For all of its applications, droplets size are directly associated to the performance of PDMS product. The decrease of average size of PDMS emulsions will increase the performance of PDMS product. The succeed of getting PDMS micro emulsion in some research leads to another research to get PDMS nano emulsions. An aim of this research is to get the effect of cosurfactant aminoethanol (TEA) to production of PDMS nano emulsion. Contribution of this research is to get PDMS nano emulsion. This research is done by emulsion polymerization of D4 (octamethylcyclotetrasiloxane) or D5 (decamethylcyclopentasiloxane) with KOH (potassium hydroxide) as an initiator. The used surfactant are polioxyethylene nonylphenol ether (NP=40), polyoxyethylene (EO=15) lauryl ether (AEO-15), polyoxyetylene (EO=25) stearyl ether (PPJ-O).The continues phase is water with addition of triethanolamine (TEA) and aminoethanol (AE). A variation of the research is concentrations of TEA. Addition of cosurfactant TEA can increase the conversions of monomer D4 and also increase the transparency of PDMS polymer emulsion. At [TEA] = 78,4 gr/L and [TEA] = 195,12 gr/L, the conversion value can reach to 73,09% and 84,24%. Afterall, addition of [TEA] = 78,4 gr/L gives transparency values to 13,21% and 20,89%, meanwhile addition of [TEA] = 195,12 gr/L gives transparency values to 70,79% and 88,61%. At [AE] = 195,12 gr/L gives conversion and transparency values to 31,40% and 9,87%.