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Pulmonary surfactant is a surface-active lipoprotein complex (phospholipoprotein) formed by type II alveolar cells. The proteins and lipids that make up the surfactant have both hydrophilic and hydrophobic regions.
Non-ionic Surfactants Structure Surfactants which that are charge neutral on both the hydrophilic end and the lipophilic end are named, logically, non-ionic. The hydrophile is produced from a polyethylene oxide (PEO) chain, and the lipophile from an alkyl (saturated hydrocarbon) alcohol. more common type of defoamer for emulsion PSAs is principally a dispersion of silica particles, mineral oil, and a dispersing aid such as non-ionic surfactant. Tiny dispersed oil droplets carry silica to the bubble where the jagged particle physically disrupts the cell wall (Figure 9).