期刊
MACROMOLECULES
卷 54, 期 20, 页码 9602-9608出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.1c01785
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资金
- National Natural Science Foundation of China (NSFC) [21822302]
- NSFC-ISF Research Program - NSFC [21961142020]
- Israel Science Foundation (ISF) [3396/19]
- Fundamental Research Funds for the Central Universities
- High Performance Computing Center of Beihang University
- 1000-Talents Program of the Chinese Foreign Experts Bureau
- School of Physics, University of Chinese Academy of Sciences
Selective adsorption of flexible polymers in a cylindrical pore, studied using self-consistent field theory (SCFT), shows different behaviors depending on the sequence of sticker monomers along the chain. The correlation between stickers and nonadsorbing monomers plays a crucial role in determining the adsorption efficiency of polymers.
Selective adsorption of flexible polymers, where only a fraction of the sticker monomers can be adsorbed, confined to a cylindrical pore, is studied within the self-consistent field theory (SCFT). The selective adsorption, modeled with di-block, alternating, and random distributions of the sticker monomers along the chain, shows different adsorption-desorption transition behaviors: when the polymer chain possesses a high fraction of stickers, the di-block sequence adsorbs better than the alternating and the random sequence. On the other hand, when the polymer chain possesses a low fraction of stickers, the alternating sequence is the most adsorbed chain. Our theory indicates that the correlation between stickers and nonadsorbing monomers (neutrals) enhances the adsorption of polymers at a low fraction of sticker monomers, while it hinders the adsorption of polymers at a high fraction of sticker monomers, revealing the mechanism of adsorption efficiency determined by the sequence of sticker monomers in a polymer chain.
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