Category

SAXS

(Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsFoodFood scienceMaterialSAXSTechniqueWAXS

Characterization of multi-scale structure and thermal properties of Indica rice starch with different amylose contents

Li, Zhihang; Kong, Xiangli; Zhou, Xianrong; Zhong, Kui; Zhou, Sumei; Liu, Xingxun

Fully understanding the relationship between multi-scale structure and thermal properties of rice starch is important for starch-based food processing. Multi-scale structures of Indica rice starch were studied from molecules to aggregation structure. Gel-permeation chromatography (GPC) and high-performance anion-exchange chromatography (HPAEC) both show that the amylopectin from debranched riceā€¦
Xenocs
12 March 2019
(Natural) polymersCustomer publicationsOrientation analysisPhase analysisPolymer researchSAXS

Controlling Crystal Microstructure To Minimize Loss in Polymer Dielectrics

Miranda, Daniel F.; Zhang, Shihai; Runt, James

A model semicrystalline polymer, poly(ethylene naphthalate) (PEN), was used to examine how morphological factors inhibit chain segment relaxations that contribute to dielectric loss. This was achieved by manipulating the extent of crystallization and the crystalline microstructure through a combination of annealing and uniaxial drawing and investigating the effects on dielectric…
Xenocs
12 March 2019
ApplicationCatalystsCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialOil & gasPhase analysisPorous materialSAXSTechnique

Effects of calcination and activation conditions on ordered mesoporous carbon supported iron catalysts for production of lower olefins from synthesis gas

Oschatz, M.; Deelen, T. W. van; Weber, J. L.; Lamme, W. S.; Wang, G.; Goderis, B.; Verkinderen, O.; Dugulan, A. I.; Jong, K. P. de

Lower C2ā€“C4 olefins are important commodity chemicals usually produced by steam cracking of naphtha or fluid catalytic cracking of vacuum gas oil. The Fischerā€“Tropsch synthesis of lower olefins (FTO) with iron-based catalysts uses synthesis gas as an alternative feedstock. Nanostructured carbon materials are widely applied as supports for the iron…
Xenocs
12 March 2019
(Natural) polymersCompositesCustomer publicationsOrientation analysisPolymer researchSAXS

Highly Biodegradable and Tough Polylactic Acidā€“Cellulose Nanocrystal Composite

Muiruri, Joseph K.; Liu, Songlin; Teo, Wern Sze; Kong, Junhua; He, Chaobin

Poly(l-lactide) cellulose nanocrystals-filled nanocomposites were fabricated by blending of cellulose nanocrystals-g-rubber-g-poly(d-lactide) (CNC-rD-PDLA) and commercial PLLA, in which CNC-g-rubber was synthesized by ring opening polymerization (ROP) of d-lactide and a Īµ-caprolactone mixture to obtain CNC-P(CL-DLA), followed by further polymerization of d-lactide to obtain CNC-rD-PDLA. X-rayā€¦
Xenocs
12 March 2019
(Natural) polymersCustomer publicationsPhase analysisPolymer researchSAXS

High molecular weight poly(butylene succinate-co-furandicarboxylate) with 10mol% of BF unit: Synthesis, crystallization-melting behavior and mechanical properties

Peng, Shuangbao; Bu, Zhiyang; Wu, Linbo; Li, Bo-Geng; Dubois, Philippe

In this study, high molecular weight poly(butylene succinate-co-furandicarboxylate) with 10mol% of butylene furandicarboxylate unit (PBSF10) was synthesized and its crystal structure and crystallization-melting behaviors were investigated by means of WAXD, SAXS, DSC and POM. The tensile properties were also assessed. The crystal structure of PBSF10 is found to be the…
Xenocs
12 March 2019
(Natural) polymersCustomer publicationsPhase analysisPolymer researchSAXS

Effect of high molecular weight on pore formation and various properties of microporous membrane used for lithium-ion battery separator

Xu, Guan; Ding, Lei; Wu, Tong; Xiang, Ming; Yang, Feng

In this article, iPP cast films with high molecular weight in middle layer were prepared to investigate the effect of high molecular weight component on pore formation and mechanical strength. The results of DSC, SEM and 2D-XRD indicated that higher molecular weight and die draw ratio (DDR) would not alter…
Xenocs
12 March 2019
ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialNanoparticles & colloidsParticle size and size distributionParticlesSAXSTechnique

Contribution to Accurate Spherical Gold Nanoparticle Size Determination by Single-Particle Inductively Coupled Mass Spectrometry: A Comparison with Small-Angle X-ray Scattering

Geertsen, ValƩrie; Barruet, Elodie; Gobeaux, FrƩdƩric; Lacour, Jean-Luc; TachƩ, Olivier

Small-angle X-ray scattering spectroscopy (SAXS) is the method of choice for nanoparticle diameter and concentration determination. On the one hand, it is metrologically traceable for spherical nanoparticle mean diameter determination and does not require any sample preparation or calibration. On the other hand, single-particle inductively coupled mass spectrometry (SPICPMS) is…
Xenocs
12 March 2019
Characteristic dimensionCustomer publicationsLipidsSAXSStructural biology

Disruptive effect of tocopherol oxalate on DPPC liposome structure: DSC, SAXS, and fluorescence anisotropy studies

Neunert, Grażyna; Tomaszewska-Gras, Jolanta; Siejak, Przemyslaw; Pietralik, Zuzanna; Kozak, Maciej; Polewski, Krzysztof

Ī±-Tocopherol oxalate (TO), a tocopherol ester derivative, was investigated for its effect on the structural changes of fully hydrated 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) liposomes, as a function of concentration and temperature, by applying differential scanning calorimetry (DSC), small angle X-ray scattering (SAXS), and DPH fluorescence anisotropy methods. The DSC and DPHā€¦
Xenocs
12 March 2019
(Hydro)gelsCharacteristic dimensionCompositesCustomer publicationsNanoparticles & colloidsSAXSShape

Smart release of antimicrobial ZnO nanoplates from a pH-responsive keratin hydrogel

Villanueva, MarĆ­a E.; Cuestas, MarĆ­a L.; PĆ©rez, Claudio J.; Campo Dallā€² Orto, Viviana; Copello, Guillermo J.

A smart antibacterial biomaterial based on a keratin hydrogel with pH-dependent behavior and Zinc Oxide nanoplates as biocide agent has been developed. The pH of a chronic wound is basic due to bacterial metabolism. Originally shrank at acid pH, keratin hydrogels swell upon contact with a bacterial contaminated media leading…
Xenocs
12 March 2019
(Natural) polymersCustomer publicationsPhase analysisPolymer researchSAXS

Effects of Interconnected Polymer Nanopores Leading to Different Degrees of Confined Polymerization

Wang, Kui; Lei, Jinhua; Nie, Heran; Shen, Lu; Chen, Peng; Zhou, Guangyuan

In this study, different degrees of ethylene-confined polymerization (non-confined, slightly confined, and highly confined) are presented in porous polymer microspheres (PPMs) with an interconnected tri-modal pore structure. First, three catalysts, Cp2ZrCl2, Cp2TiCl2, and TiCl4, are attached to the interface of PPMs to form a nano-confined space for ethylene polymerization. Then…
Xenocs
12 March 2019