Oschatz, M.; Deelen, T. W. van; Weber, J. L.; Lamme, W. S.; Wang, G.; Goderis, B.; Verkinderen, O.; Dugulan, A. I.; Jong, K. P. de
Effects of calcination and activation conditions on ordered mesoporous carbon supported iron catalysts for production of lower olefins from synthesis gas
Lower C2–C4 olefins are important commodity chemicals usually produced by steam cracking of naphtha or fluid catalytic cracking of vacuum gas oil. The Fischer–Tropsch synthesis of lower olefins (FTO) with iron-based catalysts uses synthesis gas as an alternative feedstock. Nanostructured carbon materials are widely applied as supports for the iron…
Effects of physical crosslinks on the photoresponse of epoxy-based polymers
Victorel, Marianela; Sáiz, Luciana M.; Galante, María J.; Oyanguren, Patricia A.
The influence of physical crosslinks on the photoinduced anisotropy in epoxy linear polymers with azobenzene and alkyl side groups was studied. Two series of linear epoxy-based polymers were synthesized by reaction between diglycidyl ether of bisphenol A (DGEBA), Disperse Orange-3 (DO3), and dodecylamine (DA). Two strategies of synthesis were employed…
Effective enhancement of the creep resistance in isotactic polypropylene by elevated concentrations of DMDBS
Jia, Chenfei; Liao, Xia; Zhu, Jingjun; An, Zhu; Yang, Qi; Li, Guangxian
Isotactic polypropylene (iPP) specimens nucleated with different contents of alpha-phase nucleating agent (1,3:2,4-di(3,4-dimethylbenzylidene) sorbitol, trade name DMDBS) were employed to investigate deformation-induced microstructure evolution during creep deformation. Morphological investigations using scanning electron microscopy showed that the crystalline morphology of nucleated iPP is…
Effect of the presence of strong and weak electrolytes on the existence of uniaxial and biaxial nematic phases in lyotropic mixtures
Akpinar, Erol; Otluoglu, Kemal; Turkmen, Meric; Canioz, Cihan; Reis, Dennys; Neto, Antônio Martins Figueiredo
The lyotropic mixture of potassium laurate/decanol/water presenting only the uniaxial nematic calamitic phase was doped with one strong (potassium chloride, KCl) and 11 weak electrolytes with phenyl-rings (DL-mandelic acid, benzoic acid, DL-phenyllactic acid, phenylacetic acid, phenol and phenylmethanol) and with cyclohexyl-ring (RS-hexahydromandelic acid, cyclohexanecarboxylic acid,…
Effect of thermal-air ageing treatment on mechanical properties and electromagnetic interference shielding effectiveness of low-cost nano-structured carbon filled chlorinated polyethylene
Mondal, Subhadip; Ganguly, Sayan; Das, Poushali; Bhawal, Poushali; Das, Tushar Kanti; Ravindren, Revathy; Ghosh, Sabyasachi; Das, Narayan Ch.
Easy fabrication of flexible and high-performance polymeric composites for radiation shielding has been prioritized since the last few decades. But most of the materials have been suffering from lack of durability in environmental exposures. Herein, to develop a new flexible composite with significant mechanical robustness and longtime durability, a low…
Effect of the surfactant alkyl chain length on the stabilisation of lyotropic nematic phases
Akpinar, Erol; Canioz, Cihan; Turkmen, Meric; Reis, Dennys; Neto, Antônio Martins Figueiredo
Lyotropic quaternary mixtures of potassium alkanoates (KCx) and sodium alkyl sulphates (NaCxS), where x is the number of carbon atoms in their alkyl chains, were prepared to investigate the effect of the surfactant alkyl chain length on the stabilisation of lyotropic nematic phases. The lyotropic mixtures investigated were formed by…
Efficient perovskite photovoltaic devices using chemically doped PCDTBT as a hole-transport material
Wong-Stringer, Michael; Bishop, James E.; Smith, Joel A.; Mohamad, David K.; Parnell, Andrew J.; Kumar, Vikas; Rodenburg, Cornelia; Lidzey, David G.
It is shown that by chemically doping the carbazole-based conjugated polymer PCDTBT using the molecular materials TBP, LiTFSI and FK209, its conductivity can be increased by a factor of 105 times. Such doped PCDTBT films are used as a hole transport material (HTM) for standard architecture (CH(NH2)2PbI3)0.85(CH3NH3PbBr3)0.15 perovskite solar cells…
Enzyme-Responsive Amphiphilic PEG-Dendron Hybrids and Their Assembly into Smart Micellar Nanocarriers
Harnoy, Assaf J.; Rosenbaum, Ido; Tirosh, Einat; Ebenstein, Yuval; Shaharabani, Rona; Beck, Roy; Amir, Roey J.
Enzyme-responsive micelles have great potential as drug delivery platforms due to the high selectivity of the activating enzymes. Here we report a highly modular design for the efficient and simple synthesis of amphiphilic block copolymers based on a linear hydrophilic polyethyleneglycol (PEG) and an enzyme-responsive hydrophobic dendron. These amphiphilic hybrids…
Ethanol-induced whey protein gels as carriers for lutein droplets
Uzun, Suzan; Kim, Hojun; Leal, Cecilia; Padua, Graciela W.
Lutein-in-safflower oil was dispersed in ethanol-water mixtures to form droplets of nano- and micron scale size. Such dispersions were stabilized by stirring them in a whey protein isolate (WPI) solution, which gelled immediately upon coming in contact with ethanol, entrapping the lutein droplets. Gels were dried in a vacuum oven…
Evolution of morphology and open-circuit voltage in alloy-energy transfer coexisting ternary organic solar cells
Xia, Benzheng; Yuan, Liu; Zhang, Jianqi; Wang, Zaiyu; Fang, Jin; Zhao, Yifan; Deng, Dan; Ma, Wei; Lu, Kun; Wei, Zhixiang
The oligomer-type small molecule PDT2FBT-ID is applied in a polymer/small molecule/fullerene ternary system. The PTB7-Th/PDT2FBT-ID/PC71BM ternary active layer shows complementary absorption spectra, enhanced face-on orientation and energy transfer properties. Compared to the binary system, the FF of the ternary system is improved from 66.72% to 76.14% and the Jsc is…