Dispersions of carbon nanotubes/polyhedral oligomeric silsesquioxanes hybrids in polymer: the mechanical, electrical and EMI shielding properties

作者：Li, Qi-Fang; Xu, Yihui; Yoon, Jin-San; Chen, Guang-Xin^*

来源：Journal of Materials Science, 2011, 46(7): 2324-2330.

DOI：10.1007/s10853-010-5077-0

• NANOTUBE COMPOSITES
• FIBERS
• NANOCOMPOSITES
• FUNCTIONALIZATION
• PULVERIZATION
• POLYSTYRENE
• MATRIX
• POSS

A hybrid was synthesized by grafting polyhedral oligomeric silsesquioxane (POSS) to multiwalled carbon nanotubes (MWCNTs). The MWCNT/polymer composites produced using silsesquioxane grafted MWCNTs as a filler had a high electromagnetic interference shielding effectiveness. Homogeneous dispersion of silsesquioxane grafted MWCNTs occurred throughout the polymer without any aggregation, while a pristine MWCNT aggregate that integrated several nanotube domains existed in the polymer matrix. A comparative study of the optical transmittance, electrical, and electromagnetic interference shielding properties of poly(l-lactide) (PLLA)/MWCNT composites based on pristine MWCNTs and silsesquioxane grafted MWCNTs was carried out. A high electromagnetic interference shielding effectiveness (15-16 dB) was obtained in the 36-50 GHz range at a relatively low filler loading (4 wt%) in the PLLA/silsesquioxane grafted MWCNT composite.

• 出版日期2011-4
• 单位北京化工大学