Morphology of aromatic polyamide type asymmetric reverse osmosis membranes.

Development of an oligoamide coating as a surface mimetic for aromatic polyamide films used in reverse osmosis membranes.

We developed a method for the in situ synthesis of an oligoamide coating on gold. The resultant surface chemical composition, wettability, and chemical nature were comparable to aromatic polyamide films used as reverse osmosis membranes. Hence, the oligoamide wafer may be used in adsorption/fouling studies as a surface mimetic of reverse osmosis membranes.

Degradation of Polyamide Reverse Osmosis Membranes in the Presence of Chloramine

Exposure to relatively low concentrations of chlorinated chemicals such as hypochlorite can reduce the performance and ultimately result in the failure of polyamide (PA) reverse osmosis membranes. Whereas the tolerance of PA membranes to chloramine solutions is considerably higher than that of hypochlorite, the presence of some metal ions can potentially catalyze and accelerate degradation reac...

Interfacial polymerization of polyamide-aluminosilicate SWNT nanocomposite membranes for reverse osmosis

Composite Polyamide Reverse Osmosis (RO) Membranes – Recent Developments and Future Directions

Thin Film Composite – Polyamide (TFC-PA) are commonly used reverse osmosis (RO) membranes in water desalination and waste water applications. Their poor chlorine tolerance and fouling characteristics constrain the life and performance leading to stringent chemical pretreatment requirements. In this context, development of fouling resistant and chlorine tolerant RO membranes would be relevant to...

Nanofiltration Membranes Modified with Aromatic Polyamide Dendrimers Active Layers By