聚醚改性硅油和水的相行为.pdfVIP

Progr Colloid Polym Sci (1998) 110:225-229 ? SteinkopffVerlag 1996 T. Iwanaga Phase behavior of polyoxyethylene Y. Shiogai H. Kunieda modified silicone with water Abstract The phase behavior of determined by small-angle X-ray T. Iwanaga (~EgI) Y. Shiogai Shiga Central Research Laboratory polyoxyethylene modified silicone scattering (SAXS). Noevir Co., LTD (PEOS) in water and water-oil system The ternary phase diagrams of Okada-cho 112-1 was investigated. In a water system, water/lipophilic PEOS/silicone oil or Youkaichi-shi 527 Japan hydrophilic PEOS, whose HLB value hexadecane were also constructed at is 13, forms only a hexagonal liquid constant temperature (25 °C). In the H. Kunieda crystal phase, while lamellar and case of silicone oil, the reverse Graduate School of Engineering Yokohama National University reverse hexagonal phases are micellar solution or W/O Tokiwadai 79-5 produced in a lipophilic PEOS (HLB microemulsion (Ore) solubilizes Hodogaya-ku value = 6) system. In the latter a large amount of water whereas the Yokohama 240 Japan system, these liquid crystals are surfactant is practically insoluble in formed at a rather high surfactant hexadecane. concentration compared to an ordinary polyoxyethylene nonionic Key words Polyoxyethylene modified surfactant-water system. The detailed silicone phase behavior (PEOS) structures of these liquid crystals were In this context, we investigated the phase behavior of Introduction the comb-type