High flux nanofiltration membrane
AssigneeKing Fahd University of Petroleum and Minerals
InventorsKhalid Rashed Alhooshani, Shehzada Muhammad Sajid Jillani, Elham Saud Alkhulaify
Life of this patent
Estimating the term…
Abstract
A membrane includes a base layer and a support layer formed on the base layer. The support layer includes polysulfone (Psf), polyvinylpyrrolidone (PVP), and at least one diamine selected from the group consisting of 2-chloro-4,6-diamino-1,3,5-triazine, benzoguanamine, and acetoguanamine. The membrane further includes a polyamide layer formed on the support layer. The polyamide layer includes repeating units derived from piperazine and repeating units derived from trimesoylchloride. The polyamide is covalently bonded to at least some molecules of the at least one diamine in the support layer via an amide bond.
Claims19
A membrane, comprising:
- a base layer;
- a support layer formed on the base layer and comprising polysulfone (Psf), polyvinylpyrrolidone (PVP) and at least one diamine selected from the group consisting of 2-chloro-4,6-diamino-1,3,5-triazine, benzoguanamine and acetoguanamine;
- and
- a polyamide layer formed on the support layer and comprising a polyamide having repeating units derived from piperazine and repeating units derived from trimesoylchloride,
- wherein the polyamide is covalently bonded to at least some molecules of the at least one diamine in the support layer via an amide bond,
- wherein the support layer comprises 60-97 weight percent (wt. %) Psf, 1-35 wt. % PVP, and 0.02-5 wt. % the at least one diamine,
- wherein the polyamide layer further comprises polyamide globules, and
- wherein the globules have an average size of 100-1000 nm.
Dependencies are inferred from the claim text.