The effect of thiocyanate on mixtures of the lyotropic mesogen hydroxypropyl cellulose with water and with coiled polymers
- North Carolina State Univ., Raleigh, NC (United States)
Concomitant with its salting in effect, the thiocyanate ion among others was found to increase the solubility of some water soluble polymers including the flexible chain polymers, poly (ethylene glycol) (PEG) and poly (acrylic acid) PAA, as well as the semirigid hydroxypropyl cellulose (HPC). Tools used to study the phase behavior of systems involving substances have included, optical spectroscopy, deuterium NMR, DSC, and mixtures of these of freeze fractured samples. Mechanical Properties of dried systems of these substances and their mixtures have been obtained. The addition of LiSCN leads to increases in the chiral nematic pitches of aqueous solutions of HPC. Mixtures of HPC/PEG/H{sub 2}O and HPC/PAA/H{sub 2}O at concentrations that included the phase zones of isotropy and anisotropy for these systems displayed features of immiscibility that were mitigated by the introduction of LiSCN.
- OSTI ID:
- 126158
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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