Yi Yang's research while affiliated with Arizona State University and other places
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Publications (9)
Water reclamation in spaceflight applications, such as those encountered on the International Space Station (ISS), requires complex engineering solutions to ensure maximum water recovery. Current vapor compression distillation (VCD) technologies are effective but produce highly concentrated brines and often cause scaling within a separation system....
Charge-containing polymeric materials have been widely studied for a range of applications. The fundamental relationships between the charge species, charge density, and the microscale morphology of charge-containing polymers are critical for defining the application in which they may be used. In this work, a series of thermoplastic poly(arylene et...
Aryl chlorides (ArCl) or aryl fluorides (ArF) were used in polycondensation reactions to form poly(arylene ether sulfone)s (PAES). Interestingly, the kinetics of the ArF reaction fit a third-order rate law, which is attributed to the activation of the carbon-fluorine bond by two potassium cations (at least one bound to phenolate), which form a thre...
Pervaporation desalination has several advantages over competing desalination technologies, most notably an ability to select for or against volatile organic compounds and the ability to process high salinity feeds at a low transmembrane pressure. Pervaporation has not been commercialized for desalination applications because of its energy intensit...
Metabolites control immune cell functions, and delivery of these metabolites in a sustained manner may be able to modulate function of the immune cells . In this study, alpha-ketoglutarate (aKG) and diol based polymeric-microparticles (termed paKG MPs) were synthesized to provide sustained release of aKG and promote an immunosuppressive cellular ph...
Photo-curable nanocomposites have tremendous potential in tissue engineering, advanced manufacturing, and structural, multifunctional materials. This project investigates the effect of silica (SiO2) nanoparticle loading content on the thermal, mechanical, physical, and morphological characteristics of the nanocomposite. An increased concentration o...
Zwitterionic polymers have drawn significant attention for membrane-based separations due to their impressive hydrophilicity and antifouling properties. Here we demonstrated a novel synthesis method to prepare an amphiphilic copolymer poly(arylene ether sulfone-co-sulfobetaine arylene ether sulfone) (PAES-co-SBAES), which was blended with native po...
Poly(vinyl chloride) (PVC) is one of the most common polymers used in the water treatment industry due to outstanding hydrophobicity and mechanical strength. Generating eco-friendly membranes derived from natural polymers has gained attention, particularly for water purification and producing potable water. In this study, nonwoven mats were prepare...
Membranes prepared by electrospinning nonwoven mats have been receiving an increasing amount of interest recently with potential applications as water filtration membranes, drug delivery mats, and environmental sensors. Innovations in membrane processing and characteristics enabled by electrospinning could impact the industry. In this investigation...
Citations
... Polycondensation reactions of individual substances and mixtures are described by equations of the first, second, and fractional orders. [27][28][29] Conversion, the ratio of the initial and current concentration of the polymer, the epoxy number, and the logarithm of the inverse value of the current concentrations of the initial monomer. 27 In order to establish the order of RPh polycondensation reactions with formaldehyde using the data shown in Fig. 5, kinetic dependences are constructed, respectively, for the first (Fig. 6) and second orders (Fig. 7). ...
... Our group has previously demonstrated that sulfonated block polymers, tradename Nexar, performed well as pervaporation desalination membranes, with water permeances as high as 135 kg m −2 h −1 bar −1 . 22 Nexar forms microstructures within a finalized polymer product because of the nature of the hydrophilic and hydrophobic components of the polymer backbone. These microstructures are influenced by the composition (ratio of polar to non-polar solvent) of the solvent used to process the polymer. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/325820439646208-1454693054421_Q64/Rafael-Verduzco.jpg)
... Another approach to accelerate glycolysis can be to provide glycolytic metabolites exclusively to DCs, which can then satisfy the energy needs of these cells while blocking the glycolysis of cancer cells. However, these metabolites are small molecules that get consumed or diffuse away after administration in vivo 17,18 . Therefore, there is a need to generate technologies that can provide a sustained release of metabolites to DCs. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/348303561641985-1460053448566_Q64/Sahil-Inamdar.jpg)
... Increased relative hydrophilicity is shown to assist in enhancing anti-scaling properties. 32 Commercially available polyvinyl alcohol (PVA) pervaporation membranes (DeltaMem 4155-30) are used as a benchmark. Previous reports on these membranes show a lower hydrophilicity, with the average contact angle around 60°. ...
... Compared to synthetic polymers, the results were comparable to the O 2 permeability of plasticized polyvinyl chloride (PVC), which ranges from 50 to 1500 cm 3 m −2 24 h −1 0.1 MPa −1 , and were slightly higher in water vapor permeability than PVC (15-40 g mil 100 −1 in −2 day −1 atm −1 ). It indicates that the soy protein composite film could be a potential replacement for PVC given the concern of its chloride component on human health [43]. ...
... 39,40 On the other hand, PVA presents T g around 73°C, and crosslinking normally increases this temperature, which justifies the increase in T g for crosslinked samples in this study. 41,42 For any pure polymer, the T g value depends on its chain stiffness. However, crosslinked polymers present T g values according to the crosslink density and chemical structure of the crosslinking agent. ...
