Investigations of surfactant effects on gas hydrate formation via infrared spectroscopy

► Explain the full role of SDS in nucleation and extended growth phase using IR spectroscopy. ► Observe both ice- and water-like OH stretches of hydrate-water interface at or above 100 ppm SDS. ► Detect both symmetric and asymmetric, free OH bands of the HB acceptor in the hydrate-water interface. ► Provide important insights to spatial positions of SDS molecules absorbed onto the interface from free/bonded OH bands.