Category

Phase analysis

(Natural) polymersApplicationCharacterizationCustomer publicationsGISAXSMaterialPhase analysisPolymer researchSelf-assembled materialSurface structure and patternsTechnique

Transition Pathway between Gyroid and Cylindrical Morphology in Linear Triblock Terpolymer Thin Films

Guliyeva, Aynur; Vayer, Marylène; Warmont, Fabienne; Takano, Atsushi; Matsushita, Yushu; Sinturel, Christophe

A new transition between alternating gyroid (GA) structure and cylindrical morphology was observed in thin films for a poly(isoprene-block-styrene-block-(2-vinylpyridine)) (ISP) triblock terpolymer (I/S/P volume fraction = 0.20:0.66:0.14) exhibiting in bulk a Q214 (space group I4132) morphology. Thin films were organized using solvent vapor annealing (SVA) and characterized by atomic force…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsMaterialPhase analysisPolymer researchSAXSTechnique

A unique Microfiltration membrane derived from the poly(ethylene-co-methyl acrylate)/Poly(vinylidene fluoride) (EMA/PVDF) biphasic blends and surface modification for antifouling application

Remanan, Sanjay; Chandra Das, Narayan

A new polymeric blend system is developed from the EMA and PVDF by melt-mixing at various blend compositions. Different techniques characterize the prepared blends, and especially, optical microscopy, XRD, and SAXS analyses study the blend crystallization. A microporous structure is prepared by selective solubilization of PVDF from the EMA/PVDF blends…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsMaterialOrientation analysisOtherPhase analysisPolymer researchSAXSSizeTechniqueTemperature

Structural evolution of flow-oriented high density polyethylene upon heating: In situ SAXS and WAXD studies

Liao, Tao; Zhao, Xintong; Yang, Xiao; Coates, Phil; Whiteside, Ben; Jiang, Zhiyong; Men, Yongfeng

The structural evolution of micro-injection molded high density polyethylene (HDPE) at the molecular and lamellar levels was investigated as a function of temperature during heating process using wide angle X-ray diffraction (WAXD) and small angle X-ray scattering (SAXS) techniques. The molded sample exhibits a peculiar multilayer structure of skin and…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsMaterialOrientation analysisPhase analysisPolymer researchSAXSTechniqueTemperatureWAXS

A Near-Infrared Photoactuator Based on Shape Memory Semicrystalline Polymers toward Light-Fueled Crane, Grasper, and Walker

Yang, Qi; Peng, Chuang; Ren, Juntao; Zhao, Wenpeng; Zheng, Wenjie; Zhang, Chunyu; Hu, Yanming; Zhang, Xuequan

Light-driven soft actuators with adaptive shape changes, diverse geometric morphing, and reversible macroscopic movements have gained ever-increasing interest owing to their diverse applications ranging from biomedical to aerospace devices. Herein, presented is a near-infrared (NIR) light-stimulated actuator based on cis-1,4 polybutadiene-polyethylene semicrystalline copolymer. In the system, a…
sergio.rodrigues@xenocs.com
27 January 2020
ApplicationCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticlesPhase analysisProteins & DNA/RNASAXSTechnique

Controlling Crystal Texture in Programmable Atom Equivalent Thin Films

Gabrys, Paul A.; Macfarlane, Robert J.

DNA is a powerful tool in the directed assembly of nanoparticle based superlattice materials, as the predictable nature of Watson–Crick base pairing allows DNA-grafted particles to be programmably assembled into unit cells that arise from the complete control of nanoparticle coordination environment within the lattice. However, while the local environment…
sergio.rodrigues@xenocs.com
27 January 2020
ApplicationCharacterizationCustomer publicationsLipidsMaterialPhase analysisSAXSShapeSizeStructural biologyTechnique

Effects of artepillin C on model membranes displaying liquid immiscibility

Pazin, W. M.; Vilanova, N.; Voets, I. K.; Soares, A. E. E.; Ito, A. S.

It has been hypothesized that the therapeutic effects of artepillin C, a natural compound derived from Brazilian green propolis, are likely related to its partition in the lipid bilayer component of biological membranes. To test this hypothesis, we investigated the effects of the major compound of green propolis, artepillin C,…
sergio.rodrigues@xenocs.com
27 January 2020
(Natural) polymersApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialPhase analysisTechniqueWAXS

Slow Magnetic Relaxation of Co(II) Single Chains Embedded within Metal–Organic Superstructures

Kawamura, Airi; Filatov, Alexander S.; Anderson, John S.; Jeon, Ie-Rang

Two coordination polymers of the type Co(BPDC)(N-ox), with BPDC being 4,4?-biphenyldicarboxylate and N-ox being pyridine N-oxide (PNO) or isoquinoline N-oxide (IQNO), have been synthesized and characterized. The compounds feature 2D and 3D metal–organic networks that encapsulate Co(II)-based chains in a rigid superstructure. The dc and ac magnetic properties of these…
sergio.rodrigues@xenocs.com
27 January 2020
ApplicationCharacterizationCustomer publicationsLipidsLiquid crystalsMaterialPhase analysisSAXSStructural biologyTechniqueTemperature

Cellular uptake of self-assembled phytantriol-based hexosomes is independent of major endocytic machineries

Rodrigues, Letícia; Schneider, Fabian; Zhang, Xiaohan; Larsson, Elin; Moodie, Lindon W. K.; Dietz, Hendrik; Papadakis, Christine M.; Winter, Gerhard; Lundmark, Richard; Hubert, Madlen

Despite increasing interests in non-lamellar liquid crystalline dispersions, such as hexosomes, for drug delivery, little is known about their interactions with cells and mechanism of cell entry. Here we examine the cellular uptake of hexosomes based on phytantriol and mannide monooleate by HeLa cells using live cell microscopy in comparison…
sergio.rodrigues@xenocs.com
27 January 2020
ApplicationCharacterizationCustomer publicationsFoodFood scienceLipidsLiquid crystalsMaterialPhase analysisProteins & DNA/RNASAXSSizeTechnique

Encapsulation of Aspartic Protease in Nonlamellar Lipid Liquid Crystalline Phases

Valldeperas, Maria; Talaikis, Martynas; Dhayal, Surender K.; Veli?ka, Martynas; Barauskas, Justas; Niaura, Gediminas; Nylander, Tommy

Encapsulation of proteins within lipid inverse bicontinuous cubic phases (Q2) has been widely studied for many applications, such as protein crystallization or drug delivery of proteins for food and pharmaceutical purposes. However, the use of the lipid sponge (L3) phase for encapsulation of proteins has not yet been well explored.…
sergio.rodrigues@xenocs.com
27 January 2020
ApplicationCharacterizationCustomer publicationsFoodFood scienceLipidsLiquid crystalsMaterialPhase analysisSAXSSelf-assembled materialSizeTechnique

Polymorphic states and phase transitions in a comb-like polymer having a rigid polyester backbone and flexible side chains

Danke, Varun; Gupta, Gaurav; Huth, Heiko; Schawe, Jürgen E. K.; Beiner, Mario

Structure formation in an alkoxylated polyester having rigid backbone and flexible side chains composed of 10 alkyl carbons per side chain is studied using X-ray diffraction, conventional DSC and flash DSC techniques. Two crystalline states-modification B and modification A are observed with their occurrence depending on the thermal treatment. Additionally,…
sergio.rodrigues@xenocs.com
27 January 2020