Influence of l-lysine on the permeation and antifouling performance of polyamide thin film composite reverse osmosis membranes

Abstract

Polyamide thin film composite (TFC) reverse osmosis (RO) membranes were prepared in this study.

Investigation on the Effect of Hyperbranched Polyester Grafted Graphene Oxide on the Crystallization Behaviors of β-Nucleated Isotactic Polypropylene

“…The FT-IR spectra of inorganic nano-filler GO, GO-H202, GO-H203, and GO-H204 were determined by the Nicolet iS50 FT-IR spectrometer (Thermo Scientific, Waltham, MA, USA) at a resolution of 4 cm −1 , scanning range 4000-400 cm −1 , and 20 scans averaged for each spectrogram [27].…”

Investigation on cure kinetics of epoxy resin containing carbon nanotubes modified with hyper-branched polyester

“…To study the morphologies of the CNTs and CNTs-H20, transmission electron microscopy (TEM, Tecnai G2 F20, FEI, USA) was applied. 29 2.4.3 Differential scanning calorimetry (DSC). Dynamic DSC analysis was performed by METTLER TOLEDO DSC1 (METTER TOLEDO, Swiss) which was calibrated with high purity indium and zinc standards.…”

Effect of structure regulation of hyper-branched polyester modified carbon nanotubes on toughening performance of epoxy/carbon nanotube nanocomposites

“…And 1734.4 cm À1 is the stretching vibration peak of carbonyl groups. [36][37][38] For FT-IR spectra of different branching degrees of hyperbranched polyester modied carbon nanotubes, it can be observed from Fig. 1b, compared with the pre-graing (MWCNTs-COOH), the absorption peak of carbon nanotubes at the wave numbers of 2921.9 cm À1 and 2888.5 cm À1 were added aer four different branching degrees of hyperbranched polyester graing modications, corresponding to the antisymmetric and symmetric stretching vibration of methyl and methylene, respectively.…”