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Deoxycholic acid and l-Phenylalanine enrich their hydrogel properties when combined in a zwitterionic derivative

Travaglini, Leana; di Gregorio, Maria Chiara; Severoni, Emilia; D’Annibale, Andrea; Sennato, Simona; Tardani, Franco; Giustini, Mauro; Gubitosi, Marta; Del Giudice, Alessandra; Galantini, Luciano

 (Hydro)gelsApplicationCharacterizationCustomer publicationsMaterialSAXSShapeSizeStructural biologySurfactantsTechnique

Deoxycholic acid and l-Phenylalanine enrich their hydrogel properties when combined in a zwitterionic derivative

Travaglini, Leana; di Gregorio, Maria Chiara; Severoni, Emilia; D’Annibale, Andrea; Sennato, Simona; Tardani, Franco; Giustini, Mauro; Gubitosi, Marta; Del Giudice, Alessandra; Galantini, Luciano

Hypothesis Sodium Deoxycholate (NaDC) and Phenylalanine (Phe) are important biological hydrogelators. NaDC hydrogels form by lowering the pH or by increasing the ionic strength. Phe gels form from saturated solution by thermal induction and slow kinetics. The resulting gels hold great potential in medicine and biology as drug carriers and…
Thin Biobased Transparent UV-Blocking Coating Enabled by Nanoparticle Self-Assembly

Olson, Emily; Li, Yifan; Lin, Fang-Yi; Miller, Ana; Liu, Fei; Tsyrenova, Ayuna; Palm, Devin; Curtzwiler, Greg W.; Vorst, Keith L.; Cochran, Eric; Jiang, Shan

 (Natural) polymersApplicationCharacterizationCompositesCustomer publicationsFood scienceFractal dimensionMaterialParticlesSAXSShapeSizeTechnique

Thin Biobased Transparent UV-Blocking Coating Enabled by Nanoparticle Self-Assembly

Olson, Emily; Li, Yifan; Lin, Fang-Yi; Miller, Ana; Liu, Fei; Tsyrenova, Ayuna; Palm, Devin; Curtzwiler, Greg W.; Vorst, Keith L.; Cochran, Eric; Jiang, Shan

A waterborne, UV-blocking, and visually transparent nanocomposite coating was formulated with ZnO nanoparticles and 2-hydroxyethyl cellulose (HEC). The coating is highly effective (
The domain swapping of human cystatin C induced by synchrotron radiation

Taube, Michal; Pietralik, Zuzanna; Szymanska, Aneta; Szutkowski, Kosma; Clemens, Daniel; Grubb, Anders; Kozak, Maciej

 ApplicationCharacterizationCustomer publicationsMaterialProteins & DNA/RNASAXSShapeSizeStructural biologyTechnique

The domain swapping of human cystatin C induced by synchrotron radiation

Taube, Michal; Pietralik, Zuzanna; Szymanska, Aneta; Szutkowski, Kosma; Clemens, Daniel; Grubb, Anders; Kozak, Maciej

Domain swapping is observed for many proteins with flexible conformations. This phenomenon is often associated with the development of conformational diseases. Importantly, domain swapping has been observed for human cystatin C (HCC), a protein capable of forming amyloid deposits in brain arteries. In this study, the ability of short exposure…
Block copolymers as bile salt sequestrants: intriguing structures formed in a mixture of an oppositely charged amphiphilic block copolymer and bile salt

Schillén, Karin; Galantini, Luciano; Du, Guanqun; Del Giudice, Alessandra; Alfredsson, Viveka; Carnerup, Anna M.; Pavel, Nicolae V.; Masci, Giancarlo; Nyström, Bo

 (Natural) polymersApplicationCharacterizationCustomer publicationsMaterialSAXSShapeSizeStructural biologySurfactantsTechnique

Block copolymers as bile salt sequestrants: intriguing structures formed in a mixture of an oppositely charged amphiphilic block copolymer and bile salt

Schillén, Karin; Galantini, Luciano; Du, Guanqun; Del Giudice, Alessandra; Alfredsson, Viveka; Carnerup, Anna M.; Pavel, Nicolae V.; Masci, Giancarlo; Nyström, Bo

To study the formation and characterize the structure of mixed complexes of oppositely charged block copolymers and surfactants are of great significance for practical applications, e.g., in drug carrier formulations that are based on electrostatically assisted assembly. In this context, biocompatible block copolymers and biosurfactants (like bile salts) are particularly…
Core-crystalline nanoribbons of controlled length via diffusion-limited colloid aggregation

Schmarsow, Ruth N.; Ceolín, Marcelo; Zucchi, Ileana A.; Schroeder, Walter F.

 (Natural) polymersApplicationCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticlesSAXSSelf-assembled materialShapeSizeTechniqueTemperature

Core-crystalline nanoribbons of controlled length via diffusion-limited colloid aggregation

Schmarsow, Ruth N.; Ceolín, Marcelo; Zucchi, Ileana A.; Schroeder, Walter F.

It has been previously reported that poly(ethylene) (PE)-based block copolymers self-assemble in certain thermosetting matrices to form a dispersion of one-dimensional (1D) nanoribbons. Such materials exhibit exceptional properties that originate from the high aspect ratio of the elongated nano-objects. However, the ability to prepare 1D assemblies with well-controlled dimensions is…
Hierarchical Sticker and Sticky Chain Dynamics in Self-Healing Butyl Rubber Ionomers

Mordvinkin, Anton; Suckow, Marcus; Böhme, Frank; Colby, Ralph H.; Creton, Costantino; Saalwächter, Kay

 (Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSShapeSizeTechniqueTemperature

Hierarchical Sticker and Sticky Chain Dynamics in Self-Healing Butyl Rubber Ionomers

Mordvinkin, Anton; Suckow, Marcus; Böhme, Frank; Colby, Ralph H.; Creton, Costantino; Saalwächter, Kay

We present a detailed comparison of the microscopic dynamics and the macroscopic mechanical behavior of novel butyl rubber ionomers with tunable dynamics of sparse sticky imidazole-based sidegroups that form clusters of about 20 units separated by essentially unperturbed chains. This material platform shows promise for application as self-healing elastomers. Size…
How rheological behaviors of concentrated starch affect graft copolymerization of acrylamide and resultant hydrogel

Bao, Xianyang; Yu, Long; Shen, Shirley; Simon, George P.; Liu, Hongsheng; Chen, Ling

 (Hydro)gelsApplicationCharacterizationCustomer publicationsFoodFood scienceFractal dimensionMaterialSAXSShapeSizeTechnique

How rheological behaviors of concentrated starch affect graft copolymerization of acrylamide and resultant hydrogel

Bao, Xianyang; Yu, Long; Shen, Shirley; Simon, George P.; Liu, Hongsheng; Chen, Ling

Corn starches with different amylose/amylopectin ratios were used to explore the effect of rheological behaviors of concentrated system on the graft copolymerization of acrylamide and resultant hydrogels, which sheds a light on their reactive extrusion process. The viscoelastic moduli of starch melts increased with increasing amylose content (AC), leading to…
Thermoreversible crystallization-driven aggregation of diblock copolymer nanoparticles in mineral oil

Derry, Matthew J.; Mykhaylyk, Oleksandr O.; Ryan, Anthony J.; Armes, Steven P.

 (Natural) polymersApplicationCharacterizationCustomer publicationsFractal dimensionMaterialNanoparticles & colloidsParticlesSelf-assembled materialShapeSize

Thermoreversible crystallization-driven aggregation of diblock copolymer nanoparticles in mineral oil

Derry, Matthew J.; Mykhaylyk, Oleksandr O.; Ryan, Anthony J.; Armes, Steven P.

A poly(behenyl methacrylate)37 (PBeMA37) macromolecular chain transfer agent is utilized for the reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization of benzyl methacrylate (BzMA) directly in mineral oil at 90 °C. Polymerization-induced self-assembly (PISA) occurs under these conditions, yielding a series of sterically-stabilized PBeMA37-PBzMA …
3D visualisation of hepatitis B vaccine in the oral delivery vehicle SBA-15

Rasmussen, Martin K.; Kardjilov, Nikolay; Oliveira, Cristiano L. P.; Watts, Benjamin; Villanova, Julie; Botosso, Viviane Fongaro; Sant’Anna, Osvaldo A.; Fantini, Marcia C. A.; Bordallo, Heloisa N.

 ApplicationCharacterizationCustomer publicationsMaterialPorous materialSAXSShapeSizeStructural biologyTechnique

3D visualisation of hepatitis B vaccine in the oral delivery vehicle SBA-15

Rasmussen, Martin K.; Kardjilov, Nikolay; Oliveira, Cristiano L. P.; Watts, Benjamin; Villanova, Julie; Botosso, Viviane Fongaro; Sant’Anna, Osvaldo A.; Fantini, Marcia C. A.; Bordallo, Heloisa N.

Developing a technology that enables oral vaccines to work efficiently remains a considerable effort since a number of difficulties must be addressed. The key objective being to ensure the safe passage through the harsh conditions within the gastrointestinal tract, promoting delivery that induces enhanced immune response. In the particular case…
Combining Small-Angle X-ray Scattering and X-ray Powder Diffraction to Investigate Size, Shape and Crystallinity of Silver, Gold and Alloyed Silver-Gold Nanoparticles

Garcia, P. R. A. F.; Loza, K.; Daumann, S.; Grasmik, V.; Pappert, K.; Rostek, A.; Helmlinger, J.; Prymak, O.; Heggen, M.; Epple, M.; Oliveira, C. L. P.

 ApplicationCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticle size and size distributionParticlesPhase analysisSAXSShapeSizeTechniqueWAXS

Combining Small-Angle X-ray Scattering and X-ray Powder Diffraction to Investigate Size, Shape and Crystallinity of Silver, Gold and Alloyed Silver-Gold Nanoparticles

Garcia, P. R. A. F.; Loza, K.; Daumann, S.; Grasmik, V.; Pappert, K.; Rostek, A.; Helmlinger, J.; Prymak, O.; Heggen, M.; Epple, M.; Oliveira, C. L. P.

The combination of simultaneous measurements of small and wide angle X-ray scattering (SAXS/WAXS–SWAXS) to investigate the overall size, shape, and crystallinity of silver nanoparticles and alloyed silver-gold nanoparticles in the size range of 8 to 80 nm is shown. The obtained results for overall size are in agreement with the…
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