作者
Ajay J Khopade, Frank Caruso
发表日期
2002/11/11
期刊
Biomacromolecules
卷号
3
期号
6
页码范围
1154-1162
出版商
American Chemical Society
简介
Hollow microcapsules comprised of poly(styrenesulfonate) (PSS) and a fourth generation poly(amidoamine) dendrimer (4G PAMAM) were prepared by depositing PSS/4G PAMAM multilayers on melamine formaldehyde (MF) colloid particles by the layer-by-layer self-assembly technique and subsequently dissolving the templated cores. The PSS/4G PAMAM layers were unstable toward the core removal procedure (pH ∼ 1), resulting in a low yield of intact hollow capsules (<10% for 3.5 μm diameter MF templates). Stretching of the multilayer film due to core swelling during MF core dissolution leads to partial or complete destruction of capsules, giving discrete PSS−4G PAMAM complexes. Yields were increased by increasing inter- and intramolecular attractive forces between the PSS chains in the capsules through electrostatic, hydrophobic, and a combination of these interactions. The yields, however, were …
引用总数
学术搜索中的文章
AJ Khopade, F Caruso - Biomacromolecules, 2002