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Uranyl Cation Incorporation in the [P8W48O184]40– Macrocycle Phosphopolytungstate

Dufaye, Maxime; Duval, Sylvain; Stoclet, Grégory; Trivelli, Xavier; Huvé, Marielle; Moissette, Alain; Loiseau, Thierry

Customer publications

Uranyl Cation Incorporation in the [P8W48O184]40– Macrocycle Phosphopolytungstate

Dufaye, Maxime; Duval, Sylvain; Stoclet, Grégory; Trivelli, Xavier; Huvé, Marielle; Moissette, Alain; Loiseau, Thierry

Association of uranyl nitrate with the macrocycle 40– in formate buffered aqueous solution leads to the formation of a new compound (K11.3Li8.1Na22)·89H2O (1). Its characterization by XRD reveals a high disorder of the uranyl cations and the formation of monodimensional chains of anionic 41.4– entities linked through…
Dispersion of reduced graphene oxide within thermoplastic starch/poly(lactic acid) blends investigated by small-angle X-ray scattering

Ferreira, Willian H.; Dahmouche, Karim; Andrade, Cristina T.

Customer publications

Dispersion of reduced graphene oxide within thermoplastic starch/poly(lactic acid) blends investigated by small-angle X-ray scattering

Ferreira, Willian H.; Dahmouche, Karim; Andrade, Cristina T.

Reduced graphene oxide (rGO) was incorporated into plasticized cornstarch (TPS), poly(lactic acid) (PLA) and their blends. Small-angle X-ray scattering (SAXS) was used to investigate rGO dispersion within the materials. For the TPS/PLA blend at 70:30 composition, the incorporation of rGO led to a larger fraction of small-sized rGO sheets, which…
Poly(vinylidene fluoride)-based nanocomposite employing oriented Bi2S3 nanorods with double-shell structure for high dielectric performance and loss suppression

Zhang, Lingyu; Wang, Yao; He, Dalong; Deng, Yuan

Customer publications

Poly(vinylidene fluoride)-based nanocomposite employing oriented Bi2S3 nanorods with double-shell structure for high dielectric performance and loss suppression

Zhang, Lingyu; Wang, Yao; He, Dalong; Deng, Yuan

For polymer-based nanocomposites, designing the nanostructures of fillers, their distribution inside matrix as well as interfaces with the polymer is of crucial importance to achieve high dielectric performances. One-dimensional semiconductor Bi2S3 nanorods coated with homogeneous SiO2 and polydopamine (PDA) double shell layers were imported into the poly(vinylidene fluoride) (PVDF) with…
Local Chain Alignment via Nematic Ordering Reduces Chain Entanglement in Conjugated Polymers

Xie, Renxuan; Aplan, Melissa P.; Caggiano, Nicholas J.; Weisen, Albree R.; Su, Tang; Müller, Christian; Segad, Mo; Colby, Ralph H.; Gomez, Enrique D.

Customer publications

Local Chain Alignment via Nematic Ordering Reduces Chain Entanglement in Conjugated Polymers

Xie, Renxuan; Aplan, Melissa P.; Caggiano, Nicholas J.; Weisen, Albree R.; Su, Tang; Müller, Christian; Segad, Mo; Colby, Ralph H.; Gomez, Enrique D.

Chain entanglements govern the dynamics of polymers and will therefore affect the processability and kinetics of ordering; it follows that through these parameters chain dynamics can also affect charge transport in conjugated polymers. The effect of nematic coupling on chain entanglements is probed by linear viscoelastic measurements on…
Self-Assembled Block Copolymer Electrolytes: Enabling Superior Ambient Cationic Conductivity and Electrochemical Stability

Pelz, Alexander; Dörr, Tobias Sebastian; Zhang, Peng; de Oliveira, Peter William; Winter, Martin; Wiemhöfer, Hans-Dieter; Kraus, Tobias

Customer publications

Self-Assembled Block Copolymer Electrolytes: Enabling Superior Ambient Cationic Conductivity and Electrochemical Stability

Pelz, Alexander; Dörr, Tobias Sebastian; Zhang, Peng; de Oliveira, Peter William; Winter, Martin; Wiemhöfer, Hans-Dieter; Kraus, Tobias

Block copolymers are promising materials for electrolytes in lithium metal batteries that can be tuned by changing the individual blocks to independently optimize ion transport as well as electrochemical and mechanical stability. We explored the performance of electrolytes based on modified triblock copolymers, poly(isoprene)-block-poly(styrene)-block-poly(ethylene oxide). Large polyethylene…
Aggregation in organic phases after solvent extraction of uranyl nitrate: X-ray scattering and molecular dynamic simulations

Paquet, Amaury; Diat, Olivier; Berthon, Laurence; Guilbaud, Philippe

Customer publications

Aggregation in organic phases after solvent extraction of uranyl nitrate: X-ray scattering and molecular dynamic simulations

Paquet, Amaury; Diat, Olivier; Berthon, Laurence; Guilbaud, Philippe

In the framework of spent nuclear fuel reprocessing, N,N‑dialkylamides are molecules of interest for the selective recovery of uranium and plutonium. Two monoamides, DEHBA (N,N‑di‑2‑ethylhexyl‑butyramide) and MOEHA (N,N‑methyl, octyl‑2‑ethylhexanamide), were investigated to evaluate the effect of their structure on the molecular and supramolecular speciation in organic phase. The structure of…
Biomimetic Supertough and Strong Biodegradable Polymeric Materials with Improved Thermal Properties and Excellent UV-Blocking Performance

Zhang, Xiao; Liu, Weifeng; Yang, Dongjie; Qiu, Xueqing

Customer publications

Biomimetic Supertough and Strong Biodegradable Polymeric Materials with Improved Thermal Properties and Excellent UV-Blocking Performance

Zhang, Xiao; Liu, Weifeng; Yang, Dongjie; Qiu, Xueqing

The preparation of biodegradable polymeric materials with both great strength and toughness remains a huge challenge. The natural spider silk exhibits a combined super high tensile strength and high fracture toughness (150–190 J g−1), attributing to the hierarchically assembled nanophase separation and the densely organized sacrificial hydrogen bonds confined in…
In-situ construction of “octopus”-like nanostructure to achieve high performance epoxy thermosets

Heng, Zhengguang; Zhang, Xueqin; Chen, Yang; Zou, Huawei; Liang, Mei

Customer publications

In-situ construction of “octopus”-like nanostructure to achieve high performance epoxy thermosets

Heng, Zhengguang; Zhang, Xueqin; Chen, Yang; Zou, Huawei; Liang, Mei

Inspired by the octopus, a typical nanostructure consisting of a spherical “body” and worm-like “tentacles with suckers” was constructed through incorporating polydimethylsiloxane-block-poly(ε-caprolactone)-block-polystyrene (BXLS) in epoxy thermosets. The novel nanostructure of BXLS copolymer and its morphology evolution during the epoxy curing process were investigated by transmission electron…
Bimodal mesoporous hard carbons from stabilized resorcinol-formaldehyde resin and silica template with enhanced adsorption capacity

Fuentes-Quezada, Eduardo; de la Llave, Ezequiel; Halac, Emilia; Jobbágy, Matías; Viva, Federico A.; Bruno, Mariano M.; Corti, Horacio R.

Customer publications

Bimodal mesoporous hard carbons from stabilized resorcinol-formaldehyde resin and silica template with enhanced adsorption capacity

Fuentes-Quezada, Eduardo; de la Llave, Ezequiel; Halac, Emilia; Jobbágy, Matías; Viva, Federico A.; Bruno, Mariano M.; Corti, Horacio R.

Hard carbon powders with hierarchical mesoporous structure from resorcinol-formaldehyde polymer were successfully prepared by use of double pore forming method. Poly-diallyldimethylammonium chloride (pDADMAC) and commercial silica (Sipernat® 50) were used as structuring agent and hard template, respectively. Through the proposed procedure carbon powder with bimodal mesoporous size distribution…