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2.543 Aktuelle Fachpublikationen zum Thema temperature

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A novel polyacrylamide‐based superabsorbent with temperature switch for steam breakthrough blockage

25.02.2015 | Xiaoyun Zhang, Xiangpeng Wang, Liang Li, Ruonan Wu, Sisi Zhang, Jihui Wu, Wei Wu, Journal of Applied Polymer Science, 2015

ABSTRACT A novel high‐temperature resistant superabsorbent polymer (SAP) with a temperature switch to control its water absorbency was prepared through solution polymerization of acrylamide (AM), using N,N‐methylenebisacrylamide (NMBA) and tetraallylammonium chloride (TAAC) as crosslinking ...

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Poly(ether‐imide) and related sepiolite nanocomposites: investigation of physical, thermal, and mechanical properties

20.02.2015 | Zahra Tabatabaei‐Yazdi, Shahram Mehdipour‐Ataei, Polymers for Advanced Technologies, 2015

Novel poly(ether‐imide) and sepiolite nanocomposites were synthesized based on a unique diamine monomer with the aim of improving physical and mechanical properties of final polyimide films. The diamine was polycondensed with 4,4′‐(hexafluoroisopropylidene) diphthalic anhydride to produce ...

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Branched Micelles by Living Crystallization-Driven Block Copolymer Self-Assembly under Kinetic Control

09.02.2015 | Huibin Qiu; Yang Gao; Van An Du; Rob Harniman; Mitchell A. Winnik; Ian Manners, Journal of the American Chemical Society, 2015

We have found that the width and shape (from rectangular to elliptical, to almost circular in cross-section) of the crystalline core of fiberlike micelles of polyferrocenyldimethylsilane (PFDMS) diblock copolymers can be varied by altering the degree of polymerization of PFDMS, and also the ...

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Hydrothermal Continuous Flow Synthesis and Exfoliation of NiCo Layered Double Hydroxide Nanosheets for Enhanced Oxygen Evolution Catalysis

02.02.2015 | Hanfeng Liang; Fei Meng; Miguel Cabán-Acevedo; Linsen Li; Audrey Forticaux; Lichen Xiu; Zhoucheng Wang; Song Jin, Nano Letters, 2015

We report the controlled synthesis of NiCo layered double hydroxide (LDH) nanoplates using a newly developed high temperature high pressure hydrothermal continuous flow reactor (HCFR), which enables direct growth onto conductive substrates in high yield and, most importantly, better control of ...

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Aggregation of ZnO Nanocrystallites Using Polyol Process for Dye (Reactive Red) Sensitized Solar Cell

23.01.2015 | Yusuf Inamdar, Niyamat Beedri, Kisan Kodam, Arif Shaikh, Habib Pathan, Macromolecular Symposia, 2015

Summary In the present study, ZnO has been successfully synthesized using polyol mediated process at low temperature and doctor blade method was adopted for photoelectrode preparation. The ZnO samples possesses network of aggregated sphere like morphology having crystallite size around 15 nm. ...

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Understanding the Enhancement Effect of Na2CO3 Additive on the Direct Sulfation of Limestone

06.01.2015 | Zhenshan Li; Peiting Liang; Ningsheng Cai, Energy & Fuels, 2015

The enhancement effect of Na2CO3 additive on the reaction of CaCO3 with SO2 and O2 at high temperature is a widely observed phenomenon; however, its mechanism remains unclear. From the solid-state physics point of view, this study proposed that the defect formation caused by the additive may ...

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Influence of selenization temperature on synthesis, morphology, and properties of nanostructured CoSe2 films

03.01.2015 | Jen‐Bin Shi, Po‐Feng Wu, Chia‐Tze Kao, Ming‐Way Lee, Chih‐Chieh Chan, Ping‐Chang Yang, Cheng‐Li Lin, Rui‐Yo Huang, Y ..., Crystal Research and Technology, 2015

Nanostructured cobalt selenide (CoSe2) thin films were deposited on a glass substrate using the selenization of Co films at different selenization temperatures (300 °C, 400 °C, and 500 °C) in a pure Se vapor for two hours. The morphology and structure of the as‐deposited films shows that the ...

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Materials, Vol. 8, Pages 149-161: Synthesis of Co3O4 Cotton-Like Nanostructures for Cholesterol Biosensor

31.12.2014 | Elhag, Sami ; Ibupoto, Zafar Hussain; Nour, Omer ; Willander, Magnus, Materials, 2014

The use of templates to assist and possess a control over the synthesis of nanomaterials has been an attractive option to achieve this goal. Here we have used sodium dodecyl sulfate (SDS) to act as a template for the low temperature synthesis of cobalt oxide (Co3O4) nanostructures. The use of SDS ...

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Two-dimensional four-fold symmetric SrMoO4 dendrite

30.12.2014 | Hye-Yun Jung; Young-Duk Huh, CrystEngComm, 2014

A variety of SrMoO4 morphologies were prepared by performing a solvothermal reaction in water–hexane bilayer solutions. The morphology of SrMoO4 crystals evolved from tetragonal bipyramidal to two-dimensional (2-D) four-fold symmetric dendrites as the reaction temperature and the MoO42– ion to ...

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Combination of temperature and saturated vapor annealing for phase separation of block copolymer

29.12.2014 | Jan Švanda, Oleksiy Lyutakov, Vladimíra Vosmanská, Václav Švorčík, Journal of Applied Polymer Science, 2014

ABSTRACT Phase separation of block copolymer films is a perspective technique for the creation of nanostructured templates. The phase separation can be induced by thermal or vapor solvent annealing. However, a standardized and reproducible technique of the phase separation is still missing, ...

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