Category

Fractal dimension

ApplicationCharacterizationCustomer publicationsFibersFractal dimensionMaterialOrientation analysisOtherSAXSTechnique

4D biofabrication of skeletal muscle microtissues

Apsite, Indra; Uribe, Juan Manuel; Posada, Andrés Fernando; Rosenfeldt, Sabine; Salehi, Sahar; Ionov, Leonid

Skeletal muscle is one of the most abundant tissues in the body. Although it has a relatively good regeneration capacity, it cannot heal in the case of disease or severe damage. Many current tissue engineering strategies fall short due to the complex structure of skeletal muscle. Biofabrication techniques have emerged…
(Natural) polymersApplicationCharacterizationCustomer publicationsFractal dimensionMaterialNanoparticles & colloidsParticlesSAXSShapeSizeTechnique

Soft cellulose II nanospheres: sol–gel behaviour, swelling and material synthesis

Beaumont, Marco; Rosenfeldt, Sabine; Tardy, Blaise L.; Gusenbauer, Claudia; Khakalo, Alexey; Nonappa; Opietnik, Martina; Potthast, Antje; Rojas, Orlando J.; Rosenau, Thomas

High axial aspect crystalline nanomaterials have emerged as polymeric building blocks for the construction of supermaterials. In contrast to this form, amorphous nanospheres have remained largely untapped. This is especially peculiar in the context of material assembly, due to the wide range of opportunities they offer by virtue of their…
(Natural) polymersApplicationCharacterizationCustomer publicationsFractal dimensionMaterialOrientation analysisPhase analysisPolymer researchSAXSTechnique

Photo-degradation of polyethylene under stress: A successive self-nucleation and annealing (SSA) study

Liu, Qiang; Liu, Shixiang; Lv, Yadong; Huang, Yajiang; Kong, Miqiu; Yang, Qi; Li, Guangxian

Successive self-nucleation and annealing (SSA) technique based on calorimetry is utilized to reveal the effect of uniaxial tensile stress on the photo-oxidation of high density polyethylene (HDPE). Stress-induced acceleratory and inhibitory effects on HDPE are confirmed by analyzing the newly formed melting peaks at low temperatures and the gradually disappeared…
(Natural) polymersApplicationCharacterizationCustomer publicationsFractal dimensionMaterialPhase analysisPolymer researchSAXSTechnique

Differential Polymorphic Transformation Behavior of Polybutene-1 with Multiple Isotactic Sequences

Ma, Ya-Ping; Zheng, Wei-Ping; Liu, Chen-Guang; Shao, Hua-Feng; Nie, Hua-Rong; He, Ai-Hua

For the solid-solid transformation from form II to form I of isotactic polybutene-1 (iPB), the temperature dependence of form I nucleation and growth was deemed to control the transformation process. However, the relationship between form I formation and form II disappearance in the transformation process is not clear. In this…
(Natural) polymersApplicationCharacterizationCompositesCustomer publicationsFractal dimensionInorganic materialsMaterialSAXSSizeTechnique

Effective corrosion protection by eco-friendly self-healing PMMA-cerium oxide coatings

Harb, Samarah Vargas; Trentin, Andressa; de Souza, Thiago Augusto Carneiro; Magnani, Marina; Pulcinelli, Sandra Helena; Santilli, Celso Valentim; Hammer, Peter

Metallic alloys are extensively used in many technological applications, however their susceptibility to corrosion causes huge economical losses and can result in failure of critical components. Aiming to obtain environmentally friendly, self-healing and high efficient anticorrosive coatings, organic-inorganic hybrids consisting of poly(methyl methacrylate) (PMMA) covalently bonded to CeO2/Ce2O3…
(Natural) polymersApplicationCharacterizationCompositesCustomer publicationsFractal dimensionMaterialOtherOtherPolymer researchSAXSSizeTechnique

Phase separation and performance of polyethersulfone/cellulose nanocrystals membranes

Lessan, Fatemeh; Karimi, Mohammad; Bañuelos, Jose Leobardo; Foudazi, Reza

We investigate the effect of cellulose nanocrystals (CNC) as a hydrophilic nanoparticle on the characteristics of polyethersulfone (PES) based membranes. The membranes are fabricated using typical nonsolvent induced phase separation (NIPS) method. We study the radius of gyration and aggregation of PES in dimethylformamide in the presence of CNC, the…
ApplicationCharacterizationCustomer publicationsFractal dimensionMaterialProteins & DNA/RNASAXSSizeStructural biologyTechnique

Nanoscopic Structure of Complexes Formed between DNA and the Cell-Penetrating Peptide Penetratin

de Mello, Lucas Rodrigues; Hamley, Ian William; Castelletto, Valeria; Garcia, Bianca Bonetto Moreno; Han, Sang Won; de Oliveira, Cristiano Luis Pinto; da Silva, Emerson Rodrigo

One of the most remarkable examples of cell-penetrating peptides (CPPs) is Penetratin, a 16-mer fragment derived from the Drosophila Antennapedia homeobox. Understanding the structure of Penetratin/DNA complexes is a key factor for the successful design of new vectors for gene delivery and may assist in optimizing molecular carriers based on…
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsFractal dimensionMaterialPhase analysisPorous materialSAXSStructural biologyTechnique

Crystal Chemistry and SAXS Studies of an Octahedral Polyoxoarsenotungstate Nanocluster Encapsulating Four Unprecedented Thorium Arsenate Fragments (Th3As2On – n = 25 or 26)

Dufaye, Maxime; Duval, Sylvain; Stoclet, Grégory; Loiseau, Thierry

The reaction of 8– with the 5f tetravalent thorium cation in presence of an acetate buffer and KCl at pH = 4.7 gives rise to the formation of an octahedral polyoxoarsenotungstate nanocluster 38–. This molecule is constructed around four unprecedented Th3As2On (n = 25 or 26) fragments stabilized by the…
ApplicationCharacterizationCustomer publicationsFractal dimensionInorganic materialsMaterialMetalsSAXSSizeTechnique

Precipitation in original Duralumin A-U4G versus modern 2017A alloy

Brunet, Magali; Malard, Benoit; Ratel-Ramond, Nicolas; Deshayes, Christophe; Joulié, Sébastien; Warot-Fonrose, Bénédicte; Sciau, Philippe; Douin, Joël; De Geuser, Frédéric; Deschamps, Alexis

Precipitation in Duralumin, a historic quaternary alloy of the type: Al–Cu–Mg–Si, was never fully studied nor observed by current electron microscopy techniques. This article presents the full characterization and comparison of two alloys: a Duralumin (A-U4G) from the 1950s collected on a vintage aircraft and its modern equivalent: a 2017A…
ApplicationCharacterizationCustomer publicationsFibersFractal dimensionMaterialPhase analysisProteins & DNA/RNASAXSSelf-assembled materialStructural biologyTechniqueWAXS

Aggregation behavior of the amyloid model peptide NACore

Pallbo, Jon; Sparr, Emma; Olsson, Ulf

The aggregation of the 11 residue long NACore peptide segment of ?-synuclein (68-GAVVTGVTAVA-78) has been investigated using a combination of cryogenic transmission electron microscopy (cryo-TEM), small- and wide-angle X-ray scattering, and spectroscopy techniques. The aqueous peptide solubility is pH dependent, and aggregation was triggered by a pH quench from pH…