writer：Junyou Wang, Hao Li, Xinlin Yang*
keywords：self-assemble heterocoagulation; composite hollow spheres; core–corona structure; hydrogen-bonding
source：期刊
specific source：Polym. Adv. Technol. 20 (12), 965-971 (2009). DOI: 10.1002/pat.1233
Issue time：2009年
The hollow composite spheres with a raspberry-like structure were prepared by a self-assemble heterocoagulation based on the inter-particle hydrogen-bonding interaction between the amide groups of hollow poly(N,N(-methylenebisacrylamide-co-N-isopropyl acrylamide) (P(MBA-co-NIPAAm)) microspheres and the carboxylic acid groups of poly(ethyleneglycol dimethacrylate-co-methacrylic acid) (P(EGDMA-co-MAA)) nanoparticles, in which P(EGDMA-co-MAA) nanoparticle acted as the corona and the hollow P(MBA-co-NIPAAm) microsphere behaved as the core. The control coverage of the corona particles on the surface of hollow core microspheres of P(MBA-co-NIPAAm)/P(EGDMA-co-MAA) hollow composite sphere was studied in detail through adjustment of the mass ratio between the core and corona particles. The effect of the pH on the stability of the raspberry-like hollow spheres was investigated. The polymer particles and the resultant heterocoagulated raspberry-like hollow spheres were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM).