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Sensors Using Polymer Films (Construction, Technology, Materials, and Performance)
Published in Gábor Harsányi, Polymer Films in Sensor Applications, 2017
Goldberg et al. [125] have used screen-printed silver epoxy solid contacts and polymeric membranes after silicon-on-insulator CMOS processing. They found that incorporation of SiCl4 adhesion promoter into the polymeric membrane casting solution significantly improves the stability of the membrane/solid contact interface. This improvement can be achieved without adding complexity to the electrode or microsensor fabrication process. The optimum properties of the fabricated potassium electrode were found with a polyurethane-based PU/PV(C/Ac/A) matrix using DOA [bis(2-ethylhexyl)adipate] plasticizer, valinomycin ionophore, and SiCl4 adhesion promoter.
Two-dimensional assessment of cobalt transport and separation through ionic polymer inclusion membrane: experimental optimization and artificial neural network modeling
Published in Journal of Dispersion Science and Technology, 2023
Volkan Eyupoglu, Emrah Polat, Beytullah Eren, Recep Ali Kumbasar
In the current study, RTILs were synthesized by using 1H-imidazole as a starting molecule, and alkyl bromides (1-bromo butane, 1-bromo hexane, 1-bromo octane, and 1-bromo decane) as symmetrically substituting reagent to an imidazole ring. All synthesis reagents were purchased from VWR (Seelze, Germany) and were used without further purification. The common chemicals related to both RTIL synthesis and purification and membrane preparation and transport studies that are NaOH, Na2CO3, NH4OH, HNO3, H2SO4, HCl, KOH, dichloromethane, toluene, diethyl ether, N, N-dimethyl formamide, and n-hexane were purchased from Sigma-Aldrich (Sleaze, Germany) and directly used. Poly(vinyl) chloride (PVC) in different molecular weights from low to high (low molecular weight, Mw∼43,000-Mn∼22,000, Mw∼62,000-Mn∼35,000, Mw∼80,000-Mn∼47,000 and high molecular weight) was purchased from Sigma-Aldrich (Sleaze, Germany) and used as polymer matrixes in the structure of IPIM. 2-nitrophenyl pentyl ether (2-NPPE), 2-nitrophenyl octyl ether (ONPOE), tris(2-Ethylhexyl) phosphate (TEHP) bis(2-Ethylhexyl) adipate (B2EHA), were utilized as polymer softener (plasticizer). All metal solutions were derived from concentrated AAS grade standard metal solutions, Co(II), Cr(VI), Fe(III), Cd(II), Zn(II), and Ni(II) (1000 ± 5 mg/L) to obtain a more reliable concentration of the metal solution and were also purchased from Merck (Darmstadt, Germany). Milli-Q ultrapure water was used for all solution preparations, dilutions, and other purposes throughout the study.
Preparation and tribological properties of modified MWCNTs by Schiff base Cu (II) complexes as lubricant additives
Published in Journal of Dispersion Science and Technology, 2021
Bo Zuo, Li Wu, Ze Song, Xinlei Gao, Hongjiao Wang, Xiangpei Qin
MWCNTs were purchased from Beijing Dekedao Gold Technology Co., Ltd. Other reagents were all of analytical grade, supplied by Sinopharm Chemical Reagent Co., Ltd. Graphene oxide (GO) was prepared by a Hummer method.[24–27] Lubricating base oil such as trihydroxymethylpropyl trioleate (TMPTO) was commercially obtained from Shandong West Asia Chemical Technology Co., Ltd., triisodecyl trimellitate (TMT) and bis (2-ethylhexyl) adipate (DE) were purchased from Shanghai McLin Biochemical Technology Co., Ltd.