Influence of polyoxypropylene structure on properties of cleavable ortho ester surfactants

• Main Authors: SHIAU-LIAN LIU, 劉曉蓮
• Other Authors: Keng-Ming Chen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/zfy522

碩士 === 國立臺灣科技大學 === 高分子系 === 94 === This research discusses of polyoxypropylene structure on properties of cleavable ortho ester surfactants. The surfactant have been synthesized by the reaction of propylene glycol(PG)、tripropylene glycol(TPG) 、polypropylene glycol (PPG M.W. =700, 1000)、triethyl orthoformate (TEOF) and polyoxyethylene stearyl ether. FTIR, 1H-NMR and element analysis have been used to confirm the structure of these compounds. We used buffer solution pH=4,7,10 to observe the degradation of products under acidic, neutral or alkaline conditions. The structure change of these cleavage products was confirmed by FTIR analysis. The fundamental surface activity including surface tension, contact angle, foaming and emulsifying power was studied.