Category

Characteristic dimension

ApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPhase analysisSAXSSelf-assembled materialStructural biologyTechnique

Effects of oxidation on the physicochemical properties of polyunsaturated lipid membranes

Parra-Ortiz, Elisa; Browning, Kathryn L.; Damgaard, Liv S. E.; Nordström, Randi; Micciulla, Samantha; Bucciarelli, Saskia; Malmsten, Martin

The exposure of biological membranes to reactive oxygen species (ROS) plays an important role in many pathological conditions such as inflammation, infection, or sepsis. ROS also modulate signaling processes and produce markers for damaged tissue. Lipid peroxidation, mainly affecting polyunsaturated phospholipids, results in a complex mixture of oxidized products, which…
Xenocs
12 March 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCompositesCustomer publicationsGISAXSGIWAXSInorganic materialMaterialPhase analysisPorous materialRenewable energySAXSSelf-assembled materialSurfactantsTechniqueTemperatureThin filmsWAXS

Ordered Mesoporous to Macroporous Oxides with Tunable Isomorphic Architectures: Solution Criteria for Persistent Micelle Templates

Lokupitiya, Hasala N.; Jones, Alexis; Reid, Barry; Guldin, Stefan; Stefik, Morgan

Porous and nanoscale architectures of inorganic materials have become crucial for a range of energy and catalysis applications, where the ability to control the morphology largely determines the transport characteristics and device performance. Despite the availability of a range of block copolymer self-assembly methods, the conditions for tuning the key…
Xenocs
12 March 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCrystalline fractionCustomer publicationsMaterialPolymer researchSAXSTechniqueWAXS

Blocked Shape Memory Effect in Negative Poisson’s Ratio Polymer Metamaterials

Boba, Katarzyna; Bianchi, Matteo; McCombe, Greg; Gatt, Ruben; Griffin, Anselm C.; Richardson, Robert M.; Scarpa, Fabrizio; Hamerton, Ian; Grima, Joseph N.

We describe a new class of negative Poisson’s ratio (NPR) open cell PU–PE foams produced by blocking the shape memory effect in the polymer. Contrary to classical NPR open cell thermoset and thermoplastic foams that return to their auxetic phase after reheating (and therefore limit their use in technological applications),…
Xenocs
12 March 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialNanoparticles & colloidsOil & gasParticlesPolymer researchPorous materialSAXSTechnique

Polymer-Grafted Nanoparticle Membranes with Controllable Free Volume

Bilchak, Connor R.; Buenning, Eileen; Asai, Makoto; Zhang, Kai; Durning, Christopher J.; Kumar, Sanat K.; Huang, Yucheng; Benicewicz, Brian C.; Gidley, David W.; Cheng, Shiwang; Sokolov, Alexei P.; Minelli, Matteo; Doghieri, Ferruccio

Polymer-based membranes play a key role in several industrially important gas separation technologies, e.g., removing CO2 from natural gas, with enormous economic and environmental impact. Here, we develop a novel hybrid membrane construct comprised entirely of nanoparticles grafted with polymers. These membranes are shown to have broadly tunable separation performance…
Xenocs
12 March 2019
(Hydro)gels(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSTechnique

Progression of the Morphology in Random Ionomers Containing Bulky Ammonium Counterions

Enokida, Joshua S.; Tanna, Vijesh A.; Winter, H. Henning; Coughlin, E. Bryan

Poly(isoprene-ran-dimethyloctylammonium styrenesulfonate) (P(I-ran-DMOASS)) copolymers with high molecular weights and dimethyloctylammonium styrenesulfonate (DMOASS) compositions ranging between 8 and 40 mol % (30 and 77 wt %) were synthesized via nitroxide-mediated polymerization. Thermal and viscoelastic characterization revealed distinct behaviors for the low (30–51 wt %) and high (56–77 wt…
Xenocs
12 March 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPhase analysisPolymer researchSAXSTechnique

Studies on the 3-Lamellar Morphology of Miktoarm Terpolymers

Kim, Hyeyoung; Arras, Matthias M. L.; Mahalik, J. P.; Wang, Weiyu; Yu, Duk Man; Chernyy, Sergey; Goswami, Monojoy; Kumar, Rajeev; Sumpter, Bobby G.; Hong, Kunlun; Smith, Gregory S.; Russell, Thomas P.

The morphologies of ABC miktoarm star terpolymer consisting of polystyrene (PS), polyisoprene (PI), and poly(2-vinylpyridine) (P2VP) were studied by combining small-angle neutron and X-ray scattering (SANS and SAXS) and transmission electron microscopy. We find that this system displays a rich morphological behavior including an alternate lamellar (ALT.LAM), cylinder in undulated lamellar…
Xenocs
12 March 2019
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsLiquid crystalsMaterialOtherPhase analysisTechniqueTemperatureWAXS

Highly Efficient Luminescent Liquid Crystal with Aggregation-Induced Energy Transfer

Liu, Yi; You, Li Hong; Lin, Fa Xu; Fu, Kuo; Yuan, Wang Zhang; Chen, Er-Qiang; Yu, Zhen-Qiang; Tang, Ben Zhong

A luminescent liquid crystal molecule (TPEMes) with efficient solid-state emission is rationally constructed via the chemical conjugation of blue-emitting tetraphenylethene cores and luminescent mesogenic tolane moieties, which are both featured with aggregation-induced emission properties. As for this fluorophore, aggregation-induced energy transfer from the emissive tolane mesogens to the…
Xenocs
12 March 2019