Customer publications

Here is a list of publications involving a Xenocs SAXS/WAXS system in the experimental conditions.

Customer publications

Self-Assembly and Formation of Chromonic Liquid Crystals from the Dyes Quinaldine Red Acetate and Pyronin Y

Magana, J. R.; Homs, M.; Solans, C.; Obiols-Rabasa, M.; Salonen, L. M.; Rodríguez-Abreu, C.

The aqueous self-assembly behavior of the dyes Quinaldine red acetate and Pyronin Y in a wide range of concentrations is reported here for the first time. 1H NMR spectroscopy, polarized-light optical microscopy, and small and wide X-ray scattering were used to get insight into molecular interactions, phase boundaries and aggregate…
12 March 2019
Customer publications

High Modulus Regenerated Cellulose Fibers Spun from a Low Molecular Weight Microcrystalline Cellulose Solution

Zhu, Chenchen; Richardson, Robert M.; Potter, Kevin D.; Koutsomitopoulou, Anastasia F.; van Duijneveldt, Jeroen S.; Vincent, Sheril R.; Wanasekara, Nandula D.; Eichhorn, Stephen J.; Rahatekar, Sameer S.

We have developed a novel process to convert low molecular weight microcrystalline cellulose into stiff regenerated cellulose fibers using a dry-jet wet fiber spinning process. Highly aligned cellulose fibers were spun from optically anisotropic microcrystalline cellulose/1-ethyl-3-methylimidazolium diethyl phosphate (EMImDEP) solutions. As the cellulose concentration increased from 7.6 to 12.4…
12 March 2019
Customer publications

Sequence distribution and elastic properties of propylene-based elastomers

Tsou, Andy H.; Norman, Alexander I.; Lu, Yonglai; Throckmorton, Joseph A.; Hsiao, Benjamin S.

Three iso-specific organometallic catalysts for ethylene and propylene copolymerization with varying r1r2 parameters, i.e., the products of ethylene and propylene reactivity ratios, were utilized to synthesize equal-molecular-weight propylene-based elastomers (PBEs) of alternating, random, and blocky backbone sequences. To compensate for the variations in catalyst iso-specificity and thus to…
12 March 2019
Customer publications

Double Networks Based on Amphiphilic Cross-Linked Star Block Copolymer First Conetworks and Randomly Cross-Linked Hydrophilic Second Networks

Rikkou-Kalourkoti, Maria; Kitiri, Elina N.; Patrickios, Costas S.; Leontidis, Epameinondas; Constantinou, Marios; Constantinides, Georgios; Zhang, Xiaohan; Papadakis, Christine M.

This study presents the preparation and characterization of double networks (DN) based on a first amphiphilic polymethacrylate conetwork (APCN) and a second polyacrylamide network. The APCN first network comprised interconnected “in–out” star copolymers of 2-(dimethylamino)ethyl methacrylate (DMAEMA, hydrophilic ionizable monomer) and 2-ethylhexyl methacrylate (EHMA, hydrophobic comonomer) or…
12 March 2019
Customer publications

Concentration-Induced Association in a Protein System Caused by a Highly Directional Patch Attraction

Li, Weimin; Persson, Björn A.; Lund, Mikael; Bergenholtz, Johan; Zackrisson Oskolkova, Malin

Self-association of the protein lactoferrin is studied in solution using small-angle X-ray scattering techniques. Effective static structure factors have been shown to exhibit either a monotonic or a nonmonotonic dependence on protein concentration in the small wavevector limit, depending on salt concentration. The behavior correlates with a nonmonotonic dependence of…
12 March 2019
Customer publications

High temperature annealing for structural optimization of silica aerogels in solar thermal applications

Strobach, Elise; Bhatia, Bikram; Yang, Sungwoo; Zhao, Lin; Wang, Evelyn N.

Optically transparent, thermally insulating monolithic silica aerogel, with its high solar transmittance and low thermal conductivity, is well-suited for solar thermal applications, particularly concentrated solar power systems. The properties of silica aerogel are directly determined by the structure of the highly porous, interconnected silica network. By using high temperature annealing…
12 March 2019
Customer publications

Onset of Osmotic Swelling in Highly Charged Clay Minerals

Daab, Matthias; Eichstaedt, Natalie J.; Habel, Christoph; Rosenfeldt, Sabine; Kalo, Hussein; Schießling, Hubert; Förster, Stephan; Breu, Josef

Delamination by osmotic swelling of layered materials is generally thought to become increasingly difficult, if not impossible, with increasing layer charge density because of strong Coulomb interactions. Nevertheless, for the class of 2:1 layered silicates, very few examples of delaminating organo-vermiculites were reported in literature. We propose a mechanism for…
12 March 2019
Customer publications

Preferential Orientation of Crystals Induced by Incorporation of Organic Ligands in Mixed-Dimensional Hybrid Perovskite Films

Wang, Rui; Tong, Yu; Manzi, Aurora; Wang, Kun; Fu, Zhendong; Kentzinger, Emmanuel; Feldmann, Jochen; Urban, Alexander S.; Müller‐Buschbaum, Peter; Frielinghaus, Henrich

Organic–inorganic perovskites demonstrate great potential for optical applications due to their intriguing optical and optoelectronic properties. Dedicated efforts have been carried out to understand the energy landscape and charge carrier mobilities for perovskite materials. In order to further boost these materials toward large-scale applications, an alternative “bottom-up” route for the…
12 March 2019
Customer publications

Dynamic glass transition of the rigid amorphous fraction in polyurethane-urea/SiO2 nanocomposites

Koutsoumpis, Stefanos; Raftopoulos, Konstantinos N.; Oguz, Oguzhan; Papadakis, Christine M.; Menceloglu, Yusuf Z.; Pissis, Polycarpos

We report molecular dynamics in the rigid amorphous fraction (RAF) of the polymer bound at the interfaces with nanoparticles in polymer nanocomposites and calculate the glass transition temperature, Tg, for this bound layer of polymer. We follow the ‘3-phase-model’ for semicrystalline polymers where the polymer matrix consists of the crystalline…
12 March 2019
Customer publications

On the properties of poly(isoprene-b-ferrocenylmethyl methacrylate) block copolymers

Chernyy, Sergey; Kirkensgaard, Jacob Judas Kain; Bakke, Anders; Mortensen, Kell; Almdal, Kristoffer

By combining poly(1,4-isoprene) (PI) with poly(ferrocenylmethyl methacrylate) (PFMMA) in a diblock copolymer structure by means of anionic polymerization we obtained narrowly dispersed PI-b-PFMMA copolymers with molecular weight ranging from 13000 to 62000 g/mol. The products were stable up to 228 °C, according to thermal gravimetry, which allowed us to further investigate their…
12 March 2019

SAXS WAXS Articles

SAXS WAXS Articles

SAXS WAXS Articles – Publications With SAXS Measurements

SAXS WAXS Articles – Publications With SAXS Or WAXS Measurements Using Xenocs SAXS WAXS GISAXS Instruments In The Laboratory