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57.693 Aktuelle Fachpublikationen zum Thema temperature


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Thermoresponsive microgels at the air–water interface: the impact of the swelling state on interfacial conformation

19.07.2016 | J. Maldonado-Valderrama; T. del Castillo-Santaella; I. Adroher-Benítez; A. Moncho-Jordá; A. Martín-Molina, Soft Matter, 2016

Poly(N-vinylcaprolactam) (PVCL) is a new temperature-responsive type of polymer microgel with improved biocompatibility as compared to more commonly used poly(N-isopropylacrylamide) (PNIPAM). Both polymers swell at low temperatures and collapse at high ones, showing a volume phase transition ...


A top-down strategy to synthesize wurtzite Cu2ZnSnS4 nanocrystals by green chemistry

19.07.2016 | Yiwen Sun; Zhengqiao Hu; Junjun Zhang; Li Wang; Chunyan Wu; Jun Xu, Chemical Communication, 2016

Green synthesis of metastable wurtzite Cu2ZnSnS4 nanocrystals through a top-down synthetic strategy is presented. Formation mechanisms associated with Kirkendall and etching effects are illustrated in detail. The nanocrystals exhibit remarkable photoluminescence properties at room temperature.


Brønsted acid cocatalysis in photocatalytic intramolecular coupling of tertiary amines: efficient synthesis of 2-arylindols

19.07.2016 | Xiaoqian Yuan; Xinxin Wu; Shupeng Dong; Guibing Wu; Jinxing Ye, Organic & Biomolecular Chemistry, 2016

We report herein a highly efficient intramolecular coupling reaction of tertiary amines and ketones (α,β-unsaturated ketones) by using Brønsted acid as a cocatalyst, affording indole derivatives in good to excellent yields (up to 92%) under visible light irradiation at room temperature.


Effect of temperature and electric field on 2D nematic colloidal crystals stablised by vortex-like topological defects

19.07.2016 | K. P. Zuhail; Surajit Dhara, Soft Matter, 2016

We report experimental studies on 2D colloidal crystals of dimers stabilized by vortex-like defects in planar nematic and 90 deg twisted nematic cells. The dimers are prepared and self-assembled by a laser tweezer. We study the effect of temperature and electric field on the lattice parameters of ...


A diagnostic GDGT signature for the impact of hydrothermal activity on surface deposits at the Southwest Indian Ridge

18.07.2016 | Author(s): Anyang Pan, Qunhui Yang, Huaiyang Zhou, Fuwu Ji, Hu Wang, Richard D. Pancost, Organic Geochemistry, 2016

Publication date: Available online 18 July 2016 Source:Organic Geochemistry Author(s): Anyang Pan, Qunhui Yang, Huaiyang Zhou, Fuwu Ji, Hu Wang, Richard D. Pancost The impact of hydrothermal activity on wider ocean geochemistry and microbial ecology remains a topic of much ...


Solitary electromechanical pulses in lobster neurons

17.07.2016 | Author(s): A. Gonzalez-Perez, L.D. Mosgaard, R. Budvytyte, E. Villagran-Vargas, A.D. Jackson, T. Heimburg, Biophysical Chemistry, 2016

Publication date: Available online 9 July 2016 Source:Biophysical Chemistry Author(s): A. Gonzalez-Perez, L.D. Mosgaard, R. Budvytyte, E. Villagran-Vargas, A.D. Jackson, T. Heimburg Investigations of nerve activity have focused predominantly on electrical phenomena. Nerves, ...


Materials, Vol. 9, Pages 583: UV-Assisted 3D Printing of Glass and Carbon Fiber-Reinforced Dual-Cure Polymer Composites

16.07.2016 | Invernizzi, Marta ; Natale, Gabriele ; Levi, Marinella ; Turri, Stefano ; Griffini, Gianmarco, Materials, 2016

Glass (GFR) and carbon fiber-reinforced (CFR) dual-cure polymer composites fabricated by UV-assisted three-dimensional (UV-3D) printing are presented. The resin material combines an acrylic-based photocurable resin with a low temperature (140 °C) thermally-curable resin system based on bisphenol ...


Removal of 2‐naphthoxyacetic acid from aqueous solution using quaternized chitosan beads

15.07.2016 | Patrick James Quinlan, Nathan Grishkewich, Kam Chiu Tam, The Canadian Journal of Chemical Engineering, 2016

ABSTRACT The present study investigates the use of quaternized chitosan hydrogels for the adsorption of an aromatic organic carboxylate, 2‐naphthoxyacetic acid (2‐NAA), to demonstrate the applicability of this type of adsorbent towards the removal of naphthenic acids (NAs) from oil sands ...


Polyamide/polyacrylonitrile thin film composites as forward osmosis membranes

15.07.2016 | Parisa Hajighahremanzadeh, Mahsa Abbaszadeh, Seyyed Abbas Mousavi, Mohammad Soltanieh, Hadi Bakhshi, Journal of Applied Polymer Science, 2016

ABSTRACT Thin film composites (TFCs) as forward osmosis (FO) membranes for seawater desalination application were prepared. For this purpose, polyacrylonitrile (PAN) as a moderately hydrophilic polymer was used to fabricate support membranes via nonsolvent‐induced phase inversion. A selective ...


Synthesis and application of sodium 2‐acrylamido‐2‐methylpropane sulphonate/N‐vinylcaprolactam/divinyl benzene as a high‐performance viscosifier in water‐based drilling fluid

15.07.2016 | Binqiang Xie, Xiaodong Liu, Huiqiang Wang, Lihui Zheng, Journal of Applied Polymer Science, 2016

ABSTRACT Aiming at good thickening ability and temperature resistance in water‐based drilling fluid, a novel copolymer viscosifier (SDKP) of sodium 2‐acrylamido‐2‐methylpropane sulfonate (NaAMPS) with N‐vinylcaprolactam (NVCL) and cross‐linking divinylbenzene (DVB) was prepared by micellar ...


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