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Influence of different specific surface area of highly dispersible silica and interfacial characteristics of green elastomer composites

Manoharan, Partheban; Anagha, M. G.; Das, Narayan Chandra; Naskar, Kinsuk

Customer publications

Influence of different specific surface area of highly dispersible silica and interfacial characteristics of green elastomer composites

Manoharan, Partheban; Anagha, M. G.; Das, Narayan Chandra; Naskar, Kinsuk

Epoxidized natural rubber (ENR) is a modified form of NR bearing polar epoxy groups. The present study focuses on dispersion of highly dispersible silica (HDS) filler with three different specific surface areas in ENR 25/ENR 50 composites. The effect of three different specific surface areas of HDS on bound rubber…
Influence of Boron Nitride Nanosheets on the Crystallization and Polymorphism of Poly(l-lactide)

Rosely, C. V. Sijla; Nagendra, Baku; Sivaprasad, Vijayan Pillai; Gowd, E. Bhoje

Customer publications

Influence of Boron Nitride Nanosheets on the Crystallization and Polymorphism of Poly(l-lactide)

Rosely, C. V. Sijla; Nagendra, Baku; Sivaprasad, Vijayan Pillai; Gowd, E. Bhoje

This work reports on the impact of delaminated boron nitride nanosheets (BNNSs) on the crystallization behavior and crystalline structure of melt-crystallized poly-L-lactic acid (PLLA). Wide-angle X-ray diffraction and scanning electron microscopy data revealed that the addition of lower loadings of BNNSs (∼0.5 wt %) resulted in the highly dispersed PLLA…
Influence of an external magnetic field in the two-photon absorption coefficient of magnetite nanoparticles in colloids and thin films

Espinosa, D. H. G.; Oliveira, C. L. P.; Neto, A. M. Figueiredo

Customer publications

Influence of an external magnetic field in the two-photon absorption coefficient of magnetite nanoparticles in colloids and thin films

Espinosa, D. H. G.; Oliveira, C. L. P.; Neto, A. M. Figueiredo

The Z-scan nonlinear optical and the small-angle x-ray scattering (SAXS) techniques are used to investigate the structure and nonlinear optical properties of magnetite nanoparticles dispersed in a colloid and trapped in thin films. The nonlinear refractive index (n2) and the two-photon absorption coefficient (β) were measured as a function of…
Hyperbranched poly(amido amine) demulsifiers with ethylenediamine/1,3-propanediamine as an initiator for oil-in-water emulsions with microdroplets

Zhang, Lifeng; Ying, Hao; Yan, Shu; Zhan, Ningning; Guo, Yongsheng; Fang, Wenjun

Customer publications

Hyperbranched poly(amido amine) demulsifiers with ethylenediamine/1,3-propanediamine as an initiator for oil-in-water emulsions with microdroplets

Zhang, Lifeng; Ying, Hao; Yan, Shu; Zhan, Ningning; Guo, Yongsheng; Fang, Wenjun

Two kinds of hyperbranched poly(amido amine) (h-PAMAM) with abundant terminal amine groups are synthesized to break the oil-in-water (O/W) emulsions consisting of microdroplets. The demulsification performance of h-PAMAM is systematically evaluated with assistance of UV–vis spectra, micrograph, DLS and SAXS analyses. The demulsifier with 1,3-propanediamine as initiator shows a striking…
High-performance polyimide copolymer fibers derived from 5-anino-2-(2-hydroxy-4-aminobenzene)-benzoxazole: Preparation, structure and properties

Dai, Xuemin; Bao, Feng; Jiao, Long; Yao, Haibo; Ji, Xiangling; Qiu, Xuepeng; Men, Yongfeng

Customer publications

High-performance polyimide copolymer fibers derived from 5-anino-2-(2-hydroxy-4-aminobenzene)-benzoxazole: Preparation, structure and properties

Dai, Xuemin; Bao, Feng; Jiao, Long; Yao, Haibo; Ji, Xiangling; Qiu, Xuepeng; Men, Yongfeng

A series of high-performance polyimide copolymer (co-PI) fibers containing phenylenebenzoxazole moiety with one hydroxyl group are synthesized based on the copolymerization of 3,3′,4,4′-biphenyl tetracarboxylic dianhydride (BPDA) with two diamine monomers, namely, p-phenylenediamine (p-PDA) and 5-anino-2-(2-hydroxy-4-aminobenzene)-benzoxazole (p-mHBOA), through a two-step method. The molar ratio…
Gyroidal Porous Carbon Activated with NH3 or CO2 as Lithium−Sulfur Battery Cathodes

Krüner, Benjamin; Dörr, Tobias S.; Shim, Hwirim; Sann, Joachim; Janek, Jürgen; Presser, Volker

Customer publications

Gyroidal Porous Carbon Activated with NH3 or CO2 as Lithium−Sulfur Battery Cathodes

Krüner, Benjamin; Dörr, Tobias S.; Shim, Hwirim; Sann, Joachim; Janek, Jürgen; Presser, Volker

Ordered mesoporous carbon materials, prepared from co-assembly of a block copolymer and a commercial resol, were investigated as a sulfur host for LiS-battery cathodes. We studied two activation methods for such carbons, namely annealing in ammonia (NH3) and carbon dioxide (CO2). We found that both activation environments drastically increased the…
On the colloidal stability of apolar nanoparticles: The role of particle size and ligand shell structure

Kister, Thomas; Monego, Debora; Mulvaney, Paul; Widmer-Cooper, Asaph; Kraus, Tobias

Customer publications

On the colloidal stability of apolar nanoparticles: The role of particle size and ligand shell structure

Kister, Thomas; Monego, Debora; Mulvaney, Paul; Widmer-Cooper, Asaph; Kraus, Tobias

Being able to predict and tune the colloidal stability of nanoparticles is essential for a wide range of applications, yet our ability to do so is currently poor due to a lack of understanding of how they interact with one another. Here, we show that the agglomeration of apolar particles…