Application and modification of poly(vinylidene fluoride) (PVDF) membranes – A review

Membrane distillation: Recent developments and perspectives

https://opus.lib.uts.edu.au/bitstream/10453/30657/4/Final%20Revision_2_Unmarked%20without%20endnote%202014%2007%2028.pdf

Fouling and its control in membrane distillation-A review

Scaling and fouling in membrane distillation for desalination applications: A review

Wetting phenomena in membrane distillation: Mechanisms, reversal, and prevention

Effect of temperature-dependent microstructure evolution on pore wetting in PTFE membranes under membrane distillation conditions

Effect of dry-out on the fouling of PVDF and PTFE membranes under conditions simulating intermittent seawater membrane distillation (SWMD)

Pore structure control of PVDF membranes using a 2-stage coagulation bath phase inversion process for application in membrane distillation (MD)

Conducting polymers are excellent microwave absorbers and they show technological advantage when compared with inorganic electromagnetic absorbing materials, being light weight , easily processable , and the ability of changing the electromagnetic properties with nature and amount of dopants , synthesis conditions , etc. In this paper we report the synthesis , dielectric properties, and expected application of conducting composites based on polyaniline (PAN). Cyclohexanone soluble conducting PAN composites of microwave conductivity 12.5 S/m was synthesized by the in situ polymerization of aniline in the presence of emulsion grade polyvinyl chloride. The dielectric properties of the composites , especially the dielectric loss, conductivity , dielectric heating coefficient , absorption coefficient , and penetration depth, were studied using a HP8510 vector network analyzer. The microwave absorption of the composites were studied at different frequency bands i.e, S, C, and X bands (2-12 GHz ). The absorption coefficient was found to be higher than 200 m -' and it can be used for making microwave absorbers in space applications . POLYM. COMPOS., 28:588-592, 2007. © 2007 Society of Plastics Engineers

/pdf/conducting-polyaniline-composites-as-microwave-absorbers-2324ometoc.pdf

Conducting Polyaniline Composites as Microwave Absorbers

The bacterial sterilization of TiO2 photocatalysts for self-disinfected and hygienic surfaces and coatings was explored to enhance by incorporating silver and reduced graphene oxide layers. Binary Ag/TiO2 and ternary Ag/TiO2/rGO (reduced graphene oxide) nanohybrids were developed by a hydrothermally modified sol-gel method preceded by the synthesis of Ag nanospheres by polyol method using cetyltrimethylammonium bromide (CTAB) as the capping agent. The metallic state and crystalline nature of Ag in the hybrids were affirmed using XRD, TEM, and XPS analyzes. The developed nanohybrids were studied for their visible-light-induced photocatalytic self-cleaning behavior determined from photo-induced wettability and photodegradation of methylene blue dye. Ag/TiO2/rGO ternary hybrid showed excellent photocatalytic antibacterial properties towards Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus), under visible-light excitation. ~100% disinfection of bacterial environments (both E. coli and S. aureus) were achieved within 180 min of visible-light irradiation. Finally, a plausible mechanism for the visible-light-induced photocatalytic antibacterial behavior of the as-prepared binary and ternary hybrids of TiO2 is proposed. Surface plasmon resonance induced by visible-light excitation injects hot electrons from Ag nanoparticles to the conduction band of TiO2 with the simultaneous charge separation facilitated by graphene counterpart produces a high concentration of reactive oxygen species, which is accountable for the superior photocatalytic self-cleaning and the bacterial cell lysis by Ag/TiO2/rGO hybrid. 

Rinku M. Thomas

Papers

Effect of temperature-dependent microstructure evolution on pore wetting in PTFE membranes under membrane distillation conditions

Effect of dry-out on the fouling of PVDF and PTFE membranes under conditions simulating intermittent seawater membrane distillation (SWMD)

Pore structure control of PVDF membranes using a 2-stage coagulation bath phase inversion process for application in membrane distillation (MD)

Conducting Polyaniline Composites as Microwave Absorbers

Antibacterial self-cleaning binary and ternary hybrid photocatalysts of titanium dioxide with silver and graphene