Synthesis, film morphology, and performance on cotton substrates of dodecyl/piperazine functional polysiloxane

Abstract

A novel polysiloxane bearing dodecyl and epoxy side groups (DESO) was synthesized as an intermediate through hydrosilylation of polymethylhydrosiloxane with allyl glycidyl ether and 1-dodecene. Then, dodecyl/piperazine functional polysiloxane (DPSO) was prepared through the reaction of N-aminoethylpiperazine with DESO. The chemical structure of DPSO was characterized with FTIR and 1 H-NMR spectroscopy and its application performance on cotton fabrics was studied. DPSO with dodecyl side groups gifted the treated fabrics with good wettability and whiteness compared with piperazine functional polysiloxane, while with a slightly reduced softness as well as thickening handle. Film morphology, orientation, and performance on cotton substrates of DPSO were investigated by scanning electron microscope, atomic force microscopy, X-ray photoelectron microscope, and so on. Affected by the dodecyl side groups, DPSO formed relatively hydrophilic, macroscopically smooth but actually uneven films with many dodecyl side chain pillars on the treated substrate surfaces.

Synthesis of Linear Piperazine/Polyether Functional Polysiloxane and Its Modification of Surface Properties on Cotton Fabrics

“…Previously, we synthesized dodecyl/piperazine functional polysiloxane by hydrosilylation of dodecyl/epoxy modified polysiloxane with N-aminoethylpiperazine. 14 Fabrics treated by this silicone expressed good wettability and whiteness. But large amount of solvent was used during synthesis, which made the product purification process more complicated.…”

“…Scheme showed the treatment process of cotton fabrics. The synthesized PTSO–PEG needs to be emulsified before fabric treatment. , The corresponding silicone emulsions were prepared by phase inversion emulsification method . To a round-bottom flask, 10 g of PTSO–PEG and 3 g of XL (nonionic emulsifier) were added and mixed with magnetic stirrer for a few minutes.…”

“…26,27 The corresponding silicone emulsions were prepared by phase inversion emulsification method. 14 To a round-bottom flask, 10 g of PTSO−PEG and 3 g of XL (nonionic emulsifier) were added and mixed with magnetic stirrer for a few minutes. Then 10 g of 10 wt % HAc aqueous solutions were added dropwise to form a uniform and transparent water-in-oil emulsion.…”

“…Some residual amino silane coupling agents remained in products because of the low conversion rate, and they negatively affected properties. Previously, we synthesized dodecyl/piperazine functional polysiloxane by hydrosilylation of dodecyl/epoxy modified polysiloxane with N -aminoethylpiperazine . Fabrics treated by this silicone expressed good wettability and whiteness.…”

Synthesis, Surface Properties, and Antibacterial Activity of Novel Ester‐Containing Cationic Silicone Surfactants and Their Utilization as Fabric‐Finishing Agents

“…A suitable emulsifier is essential for the process of the emulsification and the stability of the prepared emulsion. An orientated and accumulated monolayer film should be formed by emulsifier molecules, also with a good mechanical strength on the oil/water interface of the emulsion droplets (Min et al, 2014). In this study, eight kinds of emulsifiers were selected to meet the requirements of emulsification and the environmental protection (Table 2).…”