Graduate Thesis Or Dissertation
 

The cloud point composition and flory-huggins interaction parameters of polyethylene glycol and sodium lignin sulfonate in water-ethanol mixtures

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/cf95jf14p

Descriptions

Attribute NameValues
Creator
Abstract
  • In designing a solubility based separation process for solvent recovery of an organosolv pulping process, the phase behavior of polymeric lignin molecules in alcohol - water mixed solvent should be known. In this study, sodium lignin sulfonates (NaLS) samples were fractionated into three different molecular weight fractions using a partial dissolution method. The cloud point compositions of each of the three fractions were determined by a cloud point titration method. The experimental data were correlated using the three component Flory - Huggins equation of the Gibbs free energy change of mixing. The binary interaction parameter between water and that between ethanol and NaLS were found to be a weak function of the NaLS volume fraction, while that between water and ethanol was strongly depend on the solvent composition.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Publisher
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details LuhSongPing1988.pdf 2017-08-09 Public Download