Bioinspired fabrication of high performance composite membranes with ultrathin defect-free skin layer

Copolymerization modification of poly(vinyltriethoxysilane) membranes for ethanol recovery by pervaporation

“…The physical structure of the membranes is studied at 25 C by X-ray powder diffraction (PANalytical B.V., Netherlands) using Cu Ka radiation with a scanning speed of 8 min À1 within a range of 5-80 .…”

“…Currently, membrane fabrication methods like interfacial polymerization, plasma polymerization, atom transfer radical polymerization (ATRP), dip-coating and also other methods have been applied to the preparation of ultrathin pervaporation membranes. [22][23][24][25] It can be concluded that the dramatic decrease of selective layer thickness has been achieved mostly because small molecules are used instead of polymers, like PDMS, as lm forming monomers in most of these methods. Therefore, in our previous study, Zhang et al 26 have reported the preparation of thin high-ux poly(vinyltriethoxysilane) (PVTES) membranes with vinyltriethoxysilane (VTES) monomers for ethanol recovery, which possessed a ux over 10 000 g m À2 h…”

Enhancing the separation performance by introducing bioadhesive bonding layer in composite pervaporation membranes for ethanol dehydration

“…Segregation of the neighboring layers would be caused when interfacial stress exceeds their maximum interfacial adhesion [4]. Binding the active layer with the support layer via covalent bonds can solve this problem [5,6], but chemical specificity is inevitably required, thus limiting its wide application [7]. Constructing a bonding layer is an effective alternative approach to improve interfacial compatibility by anchoring the active layer onto the support layer [8].…”

“…Derivatives of DOPA such as dopamine have also been utilized as adhesives. Jiang's group [7,10,18,19] fabricate composite membranes with preferable separation performance by using dopamine to form adherent coatings through spontaneous self-polymerization.…”

Epoxy resin reinforced with nanothin polydopamine-coated carbon nanotubes: a study of the interfacial polymer layer thickness

“…As a non-covalent modification method, the PDA functionalization process has significant advantages, like high efficiency, ease of procedure, and mild reaction conditions, exclusive from concentrated acid and strong oxidation processes. Furthermore, the PDA coating layer could also act as a multipurpose platform for secondary reactions or further improvement of surface functionality, such as immobilization of various organic species at the surface [26][27][28][29][30] .…”