Effects of feeding mode on synthesis of polyalkylsilsesquioxane emulsion and latex properties

Liu, Bo; Sun, Zhengguang; Wu, Jun; Huang, Shiqiang

doi:10.1039/c4ra07669a

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…29,30 Therefore, these particles are also named polysiloxanes. The polycondensation does not lead to polysiloxane elastomers but polysilsesquioxanes, [31][32][33] which most often have a rigid structure. Fortuniak and Vilanova et al obtained elastic polysiloxane particles through hydrosilylation or free radical emulsion polymerization.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of uniform poly(urea–siloxane) microspheres through precipitation polymerization

Kong

Feng

2015

RSC Adv.

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A novel type of highly uniform polymer microspheres, poly(urea-siloxane) (PUSs) was prepared through the precipitation polymerization of 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane (APTMDS) with isophorone diisocyanate (IPDI) in H2O-acetone mixed solvent. No additives such as surfactant and initiator were used. The effects of monomer ratios, H2O/acetone ratios, and monomer concentrations on the yields and morphologies of the PUSs were investigated. Results indicated that PUSs sizes can be regulated from 2.14 µm to 7.11 µm by varying monomer ratios, monomer concentrations and H2O/acetone ratios. Hydrogen bonds between polyurea units, polyurea and APTMDS moieties which were identified as the main effects of the products, endowed the materials with good elasticity. The structures and morphologies of the materials were characterized by FT-IR, NMR, and SEM, and the thermal properties were characterized by TGA and DSC analyses.

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