A study was made of the desorption of carbon‐14 labeled fatty acid, fatty alcohol, hydrocarbon, triglyceride, and hydrophobic and hydrophilic particulate carbon from cellulose, Nylon, and polyethylene terephthalate films into aqueous solutions of cationic, anionic, and nonionic deter‐gents. Use of the polymers in film form as end‐windows of a Geiger counter and labeling of the soils with radioactive carbon‐14 allowed con‐tinuous monitoring of the amount of sorbed material and normalized the usual complication of fiber and fabric geometry so that results ob‐tained with different polymers could be directly compared. An excellent correlation was established be‐tween fatty soil removal from polyethylene terephthalate film and fabric surfaces; thus re‐sults obtained with film substrates have practical significance. Wash variables were carefully con‐trolled and were altered one at a time to learn their effect on the soil‐removal process. Results are discussed in terms of the possible mechanisms of soil removal.
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Fort et al. (1968) studied this question.
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