polyurethane non-silicone surfactants: impact on cell structure regulation processes contents introduction 1.1 background 1.2 definition and classification of surfactants 1.3 polyurethane non-silicone surfactants: an overview chemical structure and properties 2.1 general chemical structure 2.2 product parameters and specifications 2.3 key properties: surface tension, hlb value, and cloud point mechanism of action at the cellular level...