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(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialRenewable energySAXSSpecific surfaceTechnique

Nafion/Protic Ionic Liquid Blends: Nanoscale Organization and Transport Properties

Danyliv, Olesia; Martinelli, Anna

In this work, the possibility of using the protic ionic liquids N-ethylimidazolium trifluoromethylsulfonate, , and N-ethylimidazolium bis(trifluoromethylsulfonyl)imide, , as charge carriers in appropriately modified Nafion membranes has been investigated. The superior thermal stability of ionic liquids, as compared to that of water-based electrolytes, hypothetically offers a…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacterizationCustomer publicationsGISAXSMaterialPhase analysisPolymer researchSAXSShapeSizeSurface structure and patternsTechnique

Adjustable self-assembly in polystyrene-block-poly(4-vinylpyridine) dip-coated thin films

Konefa?, Magdalena; Zhigunov, Alexander; Pavlova, Ewa; ?ernoch, Peter; Pop-Georgievski, Ognen; Špírková, Milena

This work studies the influence of dip-coating parameters on self-assembly in ultra-thin films of asymmetric polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) copolymers from a 1-chloropentane solution using a combination of several experimental techniques. Small-Angle X-ray Scattering, Atomic Force Microscopy, Grazing Incidence Small Angle X-ray Scattering and Transmission Electron Microscopy…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPorous materialRenewable energySAXSSelf-assembled materialTechnique

Widely tunable persistent micelle templates via homopolymer swelling

Sarkar, Amrita; Thyagarajan, Akshay; Cole, August; Stefik, Morgan

The combination of precision control with wide tunability remains a challenge for the fabrication of porous nanomaterials suitable for studies of nanostructure–behavior relationships. Polymer micelle templates broadly enable porous materials, however micelle equilibration hampers independent pore and wall size control. Persistent micelle templates (PMT) have emerged as a kinetic controlled…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacterizationCustomer publicationsGIWAXSMaterialPolymer researchSurface structure and patternsTechnique

Addition of Monovalent Silver Cations to CH3NH3PbBr3 Produces Crystallographically Oriented Perovskite Thin Films

Siegler, Timothy D.; Zhang, Yangning; Dolocan, Andrei; Reimnitz, Lauren C.; Torabi, Aida; Abney, Michael K.; Choi, Junho; Cossio, Gabriel; Houck, Daniel W.; Yu, Edward T.; Li, Xiaoqin; Harvey, Taylor B.; Milliron, Delia J.; Korgel, Brian A.

The incorporation of monovalent silver (Ag+) cations into methylammonium lead bromide (CH3NH3PbBr3) perovskite films leads to a strongly preferred (001) crystallographic orientation on a wide variety of substrates, ranging from glass to mesoporous TiO2. CH3NH3PbBr3 films deposited without Ag+ exhibit only a weakly preferred (011) orientation. Compositional maps and depth…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSSelf-assembled materialTechnique

Self-assembly of oppositely charged polyelectrolyte block copolymers containing short thermoresponsive blocks

Hees, I. A. van; Swinkels, P. J. M.; Fokkink, R. G.; Velders, A. H.; Voets, I. K.; Gucht, J. van der; Kamperman, M.

The assembly of oppositely charged block copolymers, containing small thermoresponsive moieties, was investigated as a function of salt concentration and temperature. Aqueous solutions of poly--b-poly (NIPAM44-b-DMAEMA216) and PNIPAM-b-poly-b-PNIPAM (NIPAM35-b-AA200-b-NIPAM35) were mixed in equal charge stoichiometry, and…
sergio.rodrigues@xenocs.com
27 January 2020
ApplicationCharacterizationCustomer publicationsGISAXSInorganic materialInorganic materialsMaterialPorous materialSurface structure and patternsTechnique

Photocatalytic Template Removal by Non-Ozone-Generating UV Irradiation for the Fabrication of Well-Defined Mesoporous Inorganic Coatings

Reid, Barry; Taylor, Alaric; Alvarez-Fernandez, Alberto; Ismael, Muhamad Hafiz; Sharma, Shatakshi; Schmidt-Hansberg, Benjamin; Guldin, Stefan

The processing of mesoporous inorganic coatings typically requires a high-temperature calcination step to remove organic precursors that are essential during the material assembly. Lowering the fabrication energy costs and cutting back on the necessary resources would provide a greater scope for the deployment in applications such as architectural glass, optical…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialRenewable energyTechniqueWAXS

Preparation of cellulose nanofibers from Miscanthus x. Giganteus by ammonium persulfate oxidation

Yang, Han; Zhang, Yefei; Kato, Ryo; Rowan, Stuart J.

Carboxylic acid functionalized cellulose nanofibers (MxG-CNFA-CO2H) were successfully isolated from a sustainable grass hybrid Miscanthus x. Giganteus by a new two-step chemical oxidation, that involves bleach treatment and ammonium persulfate oxidation, followed by ultrasonication. The resulting MxG-CNFA-CO2Hs have ca. 1200?mmol/kg carboxylic acid surface groups, an aspect ratio of 230 (height…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialOrientation analysisPhase analysisPolymer researchSAXSTechniqueTensileWAXS

Investigation of Micromechanical Behavior and Voiding of Polyethylene Terephthalate/Polyethylene-stat-methyl Acrylate Blends during Tensile Deformation

Lee, Bongjoon; Onbulak, Sebla; Xu, Yuewen; Topolkaraev, Vasily; McEneany, Ryan; Bates, Frank; Hillmyer, Marc

Micromechanical deformation of polyethylene terephthalate (PET)/ethylene-stat-methyl acrylate copolymer blends was investigated for various MA contents and molar masses of p(E-s-MA). The copolymers were synthesized by ring-opening metathesis polymerization and subsequent hydrogenation. Varying the MA content and molar mass of the copolymer alters the interfacial adhesion between the…
sergio.rodrigues@xenocs.com
27 January 2020
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsGIWAXSInorganic materialMaterialRenewable energyTechniqueThin films

Controlling Processing, Morphology, and Mechanical Performance in Blends of Polylactide and Thermotropic Polyesters

de Kort, Gijs W.; Rastogi, Sanjay; Wilsens, Carolus H. R. M.

Thermoplastic composites based on thermotropic liquid crystalline polymer (LCP) materials are interesting candidates for reinforced composite application due to their promising mechanical performance and potential for recyclability. In combination with a societal push toward the more sustainable use of materials, these properties warrant new interest in this class of composites.…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsMaterialOrientation analysisPhase analysisPolymer researchSAXSTechniqueWAXS

Transparent, Lightweight, and High Strength Polyethylene Films by a Scalable Continuous Extrusion and Solid-State Drawing Process

Lin, Yunyin; Tu, Wei; Verpaalen, Rob C. P.; Zhang, Han; Bastiaansen, Cees W. M.; Peijs, Ton

The continuous production of transparent high strength ultra-drawn high-density polyethylene films or tapes is explored using a cast film extrusion and solid-state drawing line. Two methodologies are explored to achieve such high strength transparent polyethylene films; i) the use of suitable additives like 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol (BZT) and ii) solid-state drawing at…
sergio.rodrigues@xenocs.com
27 January 2020