Preparation and applications of novel amphiphilic fluoroalkyl end‐capped oligomers‐clay nanocomposites

Nonionic‐type amphiphilic fluoroalkyl end‐capped acryloylmorpholine and N,N‐dimethylacrylamide homooligomers were found to be new convenient intercalating agents for the achievement of an enlarged basal spacing of the clay layers to afford fluorinated oligomers‐clay nanocomposites. These novel fluoroalkyl end‐capped oligomers‐clay nanocomposites were found to exhibit good dispersibility and stability in aqueous and organic media, and were applied to the surface modification of traditional organic polymeric materials such as poly(methyl methacrylate). Copyright © 2006 John Wiley & Sons, Ltd.     

纳米氮化硅粉粒的表面改性研究

纳米氮化硅具有很高的化学稳定性、耐高温性能、良好的机械性能及优异的介电性能(高介电常数、高介电强度)犤9犦,在许多领域有着广泛的应用。作为一种重要的陶瓷材料,目前对它的表面改性大多是采用烧结助剂包覆氮化硅粉粒,提高烧结助剂在氮化硅浆料中的分散程度及浆料的流动性,     

Dispersing behavior of recycled rubber particles

The hydrophobic nature of recycled rubber particles presently limits their use only in non-aqueous media. Recycled rubber particles were chemically modified by preparation of amphiphilic semi-interpenetrating polymer networks using poly(acrylic acid) as the hydrophilic polymer. The resulting composite particles are water dispersible and suitable for various aqueous media applications.