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Orientation analysis

Macroscopic interpretation of nano-scale scattering data in clay

Birmpilis, G.; Ahmadi-Naghadeh, R.; Dijkstra, J.

ApplicationCharacterizationCustomer publicationsInorganic materialsOrientation analysisTechniqueWAXS

Macroscopic interpretation of nano-scale scattering data in clay

Birmpilis, G.; Ahmadi-Naghadeh, R.; Dijkstra, J.

The potential of X-ray scattering measurements for monitoring changes on the nano-scale in fine-grained materials in their natural wet state is demonstrated with a series of feasibility tests on well-controlled kaolin samples – that is, water content, pH and loading history. The results indicate that subtle changes on the nanometric…
Polymer-Induced Modification of Cellulose Nanocrystal Assemblies in Aqueous Suspensions

Cohen, Neta; Ochbaum, Guy; Levi-Kalisman, Yael; Bitton, Ronit; Yerushalmi-Rozen, Rachel

(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialNanoparticles & colloidsOrientation analysisParticlesSAXSTechnique

Polymer-Induced Modification of Cellulose Nanocrystal Assemblies in Aqueous Suspensions

Cohen, Neta; Ochbaum, Guy; Levi-Kalisman, Yael; Bitton, Ronit; Yerushalmi-Rozen, Rachel

The effect of adsorbing, nonionic polymers on the phase behavior of cellulose nanocrystals (CNCs) is of interest for design and preparation of functional hybrids. CNC assembly into a chiral nematic phase (N*) was investigated in the presence of highly hydrated poly(vinyl alcohol) (HPVA), low hydrated PVA (LPVA), and poly(vinylpyrrolidone) (PVP).…
Tunable circularly polarized luminescence from molecular assemblies of chiral AIEgens

Song, Fengyan; Cheng, Yanhua; Liu, Qiuming; Qiu, Zijie; Lam, Jacky W. Y.; Lin, Liangbin; Yang, Fafu; Tang, Ben Zhong

ApplicationCharacterizationCustomer publicationsLiquid crystalsMaterialOrientation analysisOtherPhase analysisSAXSTechniqueWAXS

Tunable circularly polarized luminescence from molecular assemblies of chiral AIEgens

Song, Fengyan; Cheng, Yanhua; Liu, Qiuming; Qiu, Zijie; Lam, Jacky W. Y.; Lin, Liangbin; Yang, Fafu; Tang, Ben Zhong

Circularly polarized luminescence (CPL) is important to chiral photonic technologies. In molecular systems, besides their intrinsic chemical structures, architectures of molecular assemblies at the mesoscopic scale also account for the final macroscopic CPL properties. Herein, tunable CPL responses can be induced through architectural regulation of these molecular assemblies in suspension…
Pore formation and evolution mechanism during biaxial stretching of β-iPP used for lithium-ion batteries separator

Ding, Lei; Xu, Ruizhang; Pu, Lian; Yang, Feng; Wu, Tong; Xiang, Ming

(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialOrientation analysisPolymer researchSAXSTechnique

Pore formation and evolution mechanism during biaxial stretching of β-iPP used for lithium-ion batteries separator

Ding, Lei; Xu, Ruizhang; Pu, Lian; Yang, Feng; Wu, Tong; Xiang, Ming

The morphological evolution and pore formation mechanism of different kinds of ?-iPP spherulites during biaxial stretching were analyzed. The smaller radial-growth spherulite deforms heterogeneous, causing a faster reduction in ?-crystal content and higher orientation degree during longitudinal stretching, while the bigger spherulite derived from the hedrites deformed more homogeneous due…