pH-dependent multiple morphologies of novel aggregates of carboxyl-terminated polymide in water Jing Wang, Min Kuang, Hongwei Duan, Daoyong Chen and Ming Jiang Eur. Phys. J. E, 15 2 (2004) 211-215 Published online: 10 November 2004 DOI: 10.1140/epje/i2004-10049-5