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3.846 Aktuelle Fachpublikationen zum Thema temperature

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Morphology, thermal, and electrical properties of polypropylene hybrid composites co‐filled with multi‐walled carbon nanotubes and graphene nanoplatelets

21.08.2015 | Marcin Wegrzyn, Begoña Galindo, Adolfo Benedito, Enrique Gimenez, Journal of Applied Polymer Science, 2015

ABSTRACT In this study, nanocomposites of polypropylene (PP) with various loadings of multi‐wall carbon nanotubes (MWCNT) and graphene nanoplatelets (GnP) were formed by masterbatch dilution/mixing approach from individual masterbatches PP‐MWCNT and PP‐GnP. Melt mixing on a twin‐screw extruder ...


Effect of SiO2 and TiO2 nanoparticle on the properties of phenyl silicone rubber

21.08.2015 | Huan Yang, Qun Gao, Yunting Xie, Qian Chen, Chunfa Ouyang, Yaomin Xu, Xiaoting Ji, Journal of Applied Polymer Science, 2015

ABSTRACT Two types of nanoparticles TiO2 and SiO2 treated with silane coupling agents were incorporated into phenyl silicone rubber at a low concentration (≤1.0%) and cured by the room temperature vulcanized method. The results showed that treated TiO2 or SiO2 nanoparticles improved the ...


Thermal stimuli‐responsive behavior of pyrene end‐functionalized PDMS through tunable Π–Π interactions

21.08.2015 | Heonjoo Ha, Kadhiravan Shanmuganathan, Yunping Fei, Christopher J. Ellison, Journal of Polymer Science Part B: Polymer Physics, 2015

ABSTRACT Pyrene end‐functionalized, telechelic poly(dimethyl siloxane) (PDMS) materials were synthesized and their response to different thermal stimuli was evaluated. The incorporation of pyrene end groups introduces strong π–π interactions that facilitated a broad range of thermally ...


End‐functionalized polylactides using a calcium‐based precatalyst: Synthesis and insights by mass spectrometry

21.08.2015 | Ilknur Yildirim, Sarah Crotty, Claas H. Loh, Grit Festag, Christine Weber, Pier‐Francesco Caponi, Michael Gottschald ..., Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT A simple and convenient method for the synthesis of end functionalized polylactides (PLAs) under mild conditions by ring opening polymerization (ROP) in the absence of potentially toxic catalysts is described. Various alcohols were used as initiators in combination with ...


Synthesis and characterization of multifunctional propenyl‐endcapped aromatic co‐monomers and their use as bismaleimide modifiers

20.08.2015 | Dezhi Wang, Ping Liu, Chunyan Qu, Lizhu Liu, Changwei Liu, Haidong Yang, Hao Feng, Wanbao Xiao, Polymers for Advanced Technologies, 2015

A series of novel modifiers for bismaleimide, bearing propenyl and phenoxy functional groups has been synthesized. Structural information of the monomers was obtained through Fourier transform infrared spectroscopy (FT‐IR), nuclear magnetic resonance (NMR) spectroscopy and elemental analysis. ...


Effects of defects and element diffusion at coating/substrate interface on damping capacity

20.08.2015 | Xueqin Wang, Yue Ma, Surface and Interface Analysis, 2015

In this work, the effects of the microstructures at the coating/substrate interface and in coating on damping and dynamic modulus by using low pressure plasma spray process and electro‐deposition (ELD) technology to deposit the Ni coating onto the Cu substrate were studied, and also research was ...


Conformations of cationized linear oligosaccharides revealed by FTMS combined with in‐ESI H/D exchange

20.08.2015 | Yury Kostyukevich, Alexey Kononikhin, Igor Popov, Eugene Nikolaev, Journal of Mass Spectrometry, 2015

Previously (Kostyukevich et al. Anal Chem 2014, 86, 2595), we have reported that oligosaccharides anions are produced in the electrospray in two different conformations, which differ by the rate of gas phase hydrogen/deuterium (H/D) exchange reaction. In the present paper, we apply the ...


Application of high‐field NMR spectroscopy for characterization and quantitation of submilligram quantities of isolated natural products

20.08.2015 | Aleksej Krunić, Jimmy Orjala, Magnetic Resonance in Chemistry, 2015

We have investigated and compared a number of sample conditions on different NMR platforms in the search of maximum SNR and optimal experiment time efficiency for structure elucidation and quantitation of natural products. Using restricted volume 3 mm Shigemi microcell assembly in conjunction ...


Synthesis of blocked and branched waterborne polyurethanes for pigment printing applications

20.08.2015 | Haiyan Mao, Siyu Qiang, Fan Yang, Caiyun Zhao, Chaoxia Wang, Yunjie Yin, Journal of Applied Polymer Science, 2015

ABSTRACT A series of blocked and branched waterborne polyurethanes (BBPUs) have been successfully synthesized and applied in pigment printing of cellulosic substrate. The branched structure was based on an “A2 + CB2” approach with diisocyanate prepolymer and diethanol amine. The terminal ...


Fluorinated bismaleimide resin with good processability, high toughness, and outstanding dielectric properties

19.08.2015 | Ying Guo, Yue Han, Feng Liu, Heng Zhou, Fenghua Chen, Tong Zhao, Journal of Applied Polymer Science, 2015

ABSTRACT In this study, novel fluorinated bismaleimide (BMI) resins were prepared by the copolymerization of 2,2′‐bis[4‐(4‐maleimidephenoxy)phenyl]hexafluoropropane (6FBMP) and diallyl hexafluorobisphenol A (6FDABPA) to enhance their dielectric properties. The dielectric properties of the ...


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