Preparation and characterization of anionically polymerized butadiene-isoprene copolymer/clay nanocomposites

作者：Zhang, Zhenjun; Zhang, Lina^*; Li, Yang

来源：Journal of Applied Polymer Science, 2006, 102(2): 1167-1172.

DOI：10.1002/app.24400

• nanocomposites
• butadiene-isoprene copolymer
• montmorillonite
• anionic polymerization

Butadiene-isoprene copolymer/montmorillonite (BIR/MMT) nanocomposites were synthesized successfully via in situ anionic polymerization. The results of transmission electron microscopy and X-ray diffractometer showed that the clay layers were exfoliated and high reaction temperature benefited the exfoliation of layers in BIR/MMT. The polymerization still exhibited "living" characteristics with the addition of organophilic montmorillonite (OMMT). However, the contents of 1,2-polybutadiene and 3,4-polyisoprene of the copolymer decreased with the addition of OMMT, because of its absorption effect on N,N,N',N'-tetramethylethanediamine as revealed by H-1 NMR. Moreover, it was observed that the glass-transition temperature of the BIR/MMT nanocomposites also decreased when compared with the BIR copolymers. The thermal stability of the nanocomposites was improved, because of the barrier property of exfoliated clay la yers.

• 出版日期2006-10-15
• 单位武汉大学