IBM Almaden Research Center – TechConnect Briefs

Enhanced RO Performance of Polyamide Bi-layer Membranes Prepared by Sequential Interfacial Polymerization

Na Y.-H., Nassar M., Diep J., Davis B., Vora A., Dubois G., Al-Rasheed R., Nassar M., Geise G., Freeman B., IBM Almaden Research Center, US

We have developed polyamide bi-layer thin film composite membranes to enhance RO-desalination performance. The polyamide bi-lyer membrane consists of conventional non-substituted aromatic polyamide under-layer and HFA-substituted aromatic polyamide top-layer, which can be esaily prepared by [...]

Enhanced RO Performance of Polyamide Bi-layer Membranes Prepared by Sequential Interfacial Polymerization

Na Y.-H., Nassar M., Diep J., Davis B., Vora A., Dubois G., Al-Rasheed R., Nassar M., Geise G., Freeman B., IBM Almaden Research Center, US

We have developed polyamide bi-layer thin film composite membranes to enhance RO-desalination performance. The polyamide bi-lyer membrane consists of conventional non-substituted aromatic polyamide under-layer and HFA-substituted aromatic polyamide top-layer, which can be esaily prepared by [...]

Computer Modeling Of Star Polymer Molecules With Diblock Arms

Swope W., IBM Almaden Research Center, US

Using molecular dynamics simulations and supercomputers we have studied a number of star polymer molecules in an aqueous environment to help determine how their composition affects structure, thermodynamic stability and kinetics. We have examined stars [...]

Nanogel Star Polymer Nanostructures of Controlled Size, Molecular Architecture and Functionality: No Assembly Required

Miller R.D., Sly J., Lee V.Y., Appel E., Nguyen T., Nunes H., Tjio M., Gomez L., McNeil M., Munninghoff J., Rowan A.E., IBM Almaden Research Center, US

We have developed versatile routes to nanogel core, multiarm star polymeric unimolecular amphiphiles that provides exquisite control over molecular size, polydispersity, chain and periphery functionality which eliminate the dynamic equilibrium associated with polymeric micelles. . [...]