Effect of temperature on the phase behavior and microstructure of aggregates in SDS/Triton X-100/aH2O systems. (1st February 2017)

• Record Type: Journal Article
• Authors: He, WeiYan; Liu, JinRong; Cao, ZhenZhu
• Is Part Of: Phase transitions. Volume 90:Number 2(2017)
• Page Start: 200
• Page End: 212
• Publication Date: 2017-02-01
• Subjects: Phase transitions -- lyotropic liquid crystal -- temperature -- microstructure; Phase transformations (Statistical physics) -- Periodicals; 530.47405
• DOI: 10.1080/01411594.2016.1172228
• Languages: English
• ISSNs: 0141-1594

Abstract

ABSTRACT: The phase behavior and microstructure of a system containing polyoxyethylene tert-octylphenyl (Triton X-100), sodium dodecyl sulfate (SDS) and water were investigated using polarized optical microscopy (POM), differential scanning calorimetry (DSC) and small-angle X-ray diffraction (XRD). Phase-behavior study revealed that lamellar and hexagonal phases occurred in different compositions, and that lyotropic liquid crystal phases tended to form an H phase with increased Triton X-100 content. The effects of temperature on the phase behavior and microstructure of lyotropic liquid crystals were also studied. Heating induced a change from hexagonal to lamellar phase and from gel to hexagonal phase. POM and small-angle X-ray diffraction (SXRD) revealed that the phase-transition temperature of LLCs increased with increased Triton X-100 content, as further supported by DSC data.