Preparation and properties of organosoluble montmorillonite/polyimide hybrid materials

✍ Scribed by Zi-Kang Zhu; Yong Yang; Jie Yin; Xin-Yu Wang; Yang-Chuan Ke; Zong-Neng Qi

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 164 KB
• Volume: 73
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19990912)73:11<2063::aid-app1>3.0.co;2-q

✦ Synopsis

Organosoluble montmorillonite/polyimide hybrids were prepared using a monomer solution intercalation polymerization method. Montmorillonite was organotreated with p-aminobenzoic acid and the organosoluble polyimide was based on pyromellitic dianhydride and 4,4Ј-diamino-3,3Ј-dimethyldiphenylmethane. The particle size of montmorillonite in the hybrid containing 1 wt % of montmorillonite is about 400 nm. The strength and the toughness of montmorillonite/polyimide hybrids are improved simultaneously when the montmorillonite content is below 5 wt %. The thermal stabilities of montmorillonite/polyimide hybrids are obviously improved and their thermal expansion coefficients are reduced. When the montmorillonite content is below 5 wt %, the montmorillonite/polyimide hybrids are soluble in strong aprotonic polar organic solvents.