Borro, Bruno C.; Bohr, Adam; Bucciarelli, Saskia; Boetker, Johan P.; Foged, Camilla; Rantanen, Jukka; Malmsten, Martin
Microfluidics-based self-assembly of peptide-loaded microgels: Effect of three dimensional (3D) printed micromixer design
In an effort to contribute to research in scalable production systems for polymeric delivery systems loaded with antimicrobial peptides (AMPs), we here investigate effects of hydrodynamic flow conditions on microfluidic particle generation. For this purpose, rapid prototyping using 3D printing was applied to prepare micromixers with three different geometric designs,…
Adduct modified nano-clay mineral dispersed polystyrene nanocomposites as advanced corrosion resistance coatings for aluminum alloys
Raju, Annu; Lakshmi, V.; Vishnu Prataap, R. K.; Resmi, V. G.; Rajan, T. P. D.; Pavithran, C.; Prasad, V. S.; Mohan, S.
The present investigation is on processing of a series of clay polystyrene nanocomposite (CPS) coatings containing different adduct modified montmorillonite (Mt) for corrosion resistance coating applications. The corrosion properties were studied using potentiodynamic and electrochemical impedance spectroscopy measurements in 3.5wt% aqueous NaCl electrolyte. The CPS coatings offered enhanced
Aescin Incorporation and Nanodomain Formation in DMPC Model Membranes
Sreij, Ramsia; Dargel, Carina; Moleiro, Lara H.; Monroy, Francisco; Hellweg, Thomas
The saponin aescin from the horse chestnut tree is a natural surfactant well-known to self-assemble as oriented-aggregates at fluid interfaces. Using model membranes in the form of lipid vesicles and Langmuir monolayers, we study the mixing properties of aescin with the phase-segregating phospholipid 1,2-dimyristoyl-sn-glycero-phosphocholine (DMPC). The binary membranes are experimentally…
A lignin-derived sulphated carbon for acid catalyzed transformations of bio-derived sugars
Antonyraj, Churchil A.; Haridas, Ajit
Bio-ethanol plant derived crude lignin was utilized in the synthesis of carbon catalysts for the conversion of xylose in acid pretreatment liquid (APL, another by-product of bio-ethanol plant) into furfural. Also, xylose dehydration to furfural by carbon catalysts carried out in water-MIBK biphasic system showed a maximum yield of 60%…
Amino-functionalized breath-figure cavities in polystyrene–alumina hybrid films: effect of particle concentration and dispersion
V, Lakshmi; Raju, Annu; G, Resmi V.; Pancrecious, Jerin K.; D, Rajan T. P.; C, Pavithran
We report the formation of breath-figure (BF) patterns with amino-functionalized cavities in a BF incompatible polystyrene (PS) by incorporating functionalized alumina nanoparticles. The particles were amphiphilic-modified and the modifier ratio was regulated to achieve a specific hydrophobic/hydrophilic balance of the particles. The influence of the physical and chemical properties of…
A multi-functional dual-energy laboratory Mo-Cr-SAXS system
Koppoju, S.
A laboratory small-angle X-ray scattering (SAXS) system with a dual energy (Mo and Cr) source has been designed and established with the aim of studying the heterogeneity in high-Z metallic structural materials such as steels (Fe alloy) and other materials. With the combination of Mo and Cr energies, various camera…
Analysis of Diffuse SAXS Intensity in the Vicinity of Zero Scattering Angle Reveals the Location of the Flexibilizer in Homopolypropylene Compounds
Li, Xuke; Lu, Ying; Sun, Yingying; Che, Yihui; Men, Yongfeng
Vistamaxx performance polymer which is one type of propylene-based elastomer acting as the flexibilizer for toughening the homopolypropylene (HPP) was studied using X-ray scattering at wide, small, and ultrasmall angle regimes and dynamic mechanical analysis techniques. The well-overlapped scattering curves at wide angle and ultrasmall angle indicate the unaffected structure…
Anisotropic nanoparticles as templates for the crystalline structure of an injection-molded isotactic polypropylene/TiO2 nanocomposite
Zhang, Peng; Kraus, Tobias
We study the molecular origins of anisotropy in a semicrystalline polymer nanocomposite that is caused by aligned, elongated filler nanoparticles. Our study is based on spatially resolved 2D WAXS/SAXS data that indicates the arrangement of molecules, lamellae, and filler particles in the composite. Isotactic polypropylene (IPP) samples filled with anisotropic…
A novel ionomeric polyurethane elastomer based on ionic liquid as crosslinker
Behera, Prasanta Kumar; Usha, K. M.; Guchhait, P. K.; Jehnichen, Dieter; Das, Amit; Voit, Brigitte; Singha, Nikhil K.
A novel ionic liquid crosslinked flexible polyurethane elastomer (PUIL) was successfully synthesized by a one-pot polymerization method. A variety of characterization methods was employed to study the properties of PUIL, and they were compared with those of a linear thermoplastic polyurethane elastomer (TPU) prepared using butanediol (BDO) as a chain…
A survey on the phase diagram of the system sodium dodecyl sulphate/1-decanol /D2O concerning an eventual coexistence of uniaxial nematic phases
Oliveira-Filho, A. G.; Akpinar, E.; Reis, D.; Neto, A. M. Figueiredo
We examine an eventual coexistence of discotic and calamitic nematic uniaxial phases in the sodium dodecyl sulphate (SDS)/1-decanol (DeOH)/D2O mixture phase diagram. This coexistence is claimed in some previous works. Four different molar ratios / were investigated, where the square brackets represents the molar concentration of the compound, and 33,…