It is a challenge to research and develop silicon surfactants with good acid alkali stability. In the present paper, methylpropenyl polyether modified nonionic silicone surfactant (MPNTS), an alkali-resistant hydrolysis-resistant surfactant, was synthesized by hydrosilylation of 1,1,1,3,5,5,5-heptamethyl trisiloxane (MDHM) (EO(7)). The segments are grafted onto main chain organosilicon heptamet...

In this paper, the multiscale analysis of reproduction accuracy jaw geometry obtained via use selected orthodontic materials is discussed. Impressions were made from two types impression material. An assessment model mapping was performed using noncontact systems, including a fringe projection optical 3D scanner, computed tomography, and focus variation microscope. Measurements in three modes f...

Highly efficient silicone surfactants are typically based on polyether hydrophiles. As part of a program to increase the natural content silicones, we describe synthesis with amino acid hydrophiles (cysteine, arginine, and lysine). The compounds were prepared using radial thiol–ene reaction vinylsilicones for cysteine derivatives catalyst-free aza-Michael arginine lysine. Short chain monomer:hy...

The graphene quantum dot based fluorescent probe community needs unambiguous evidence about the control on the ion selectivity. In this paper, polyethylene glycol modified N-doped graphene quantum dots (PN-GQDs) were synthesized by alkylation reaction between graphene quantum dots and organic halides. We demonstrate the tunable selectivity and sensitivity by controlling the supramolecular recog...

Polyether ionophores represent a large group of natural, biologically active substances produced by Streptomyces spp. They are lipid soluble and able to transport metal cations across cell membranes. Several of polyether ionophores are widely used as growth promoters in veterinary. Polyether antibiotics show a broad spectrum of bioactivity ranging from antibacterial, antifungal, antiparasitic, ...

Polydimethylsiloxane (PDMS) oligomers with ranging from 900 to 7000 g/mol and which were α,ω-aminopropyl, α,ω-N-methylaminopropyl and α,ω-hydroxyhexyl terminated were obtained from Th. Goldschmidt AG in Essen, Germany. The of amine-terminated oligomers were determined by the titration of the end groups with hydrochloric acid. The of hydroxyhexyl terminated PDMS oligomers were det...