Multiresponsive Microgels: Toward an Independent Tuning of Swelling and Surface Properties,Langmuir

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Multiresponsive Microgels: Toward an Independent Tuning of Swelling and Surface Properties
Langmuir ( IF 3.7 ) Pub Date : 2021-09-15 , DOI: 10.1021/acs.langmuir.1c01269
Alberto Guerron ₁ , Suzanne Giasson _{1,

2}

Affiliation

Dual-responsive poly-(N-isopropylacrylamide) (PNIPAM) microgels surface-functionalized with polyethylene glycol (PEG) or poly-2-dimethylaminoethyl methacrylate (PDMAEMA) were developed to enable the swelling behavior and surface properties of the microgels to be tuned independently. The thermo-triggered swelling and pH-triggered surface properties of the microgels were investigated in aqueous suspensions using dynamic light scattering and on substrates using the surface forces apparatus. Grafting polymer chains on the microgel surface did not impede the thermo-triggered swelling behavior of the microgels in suspensions and immobilized on substrates. An unprecedented decoupling of the swelling behavior and surface properties could be obtained. More particularly, the thermo-triggered swelling behavior of the PNIPAM underlying microstructure could be tuned below and above the phase transition temperature with no change in the surface potential and adhesion provided by the surface non-responsive PEG.

中文翻译：

多响应微凝胶：独立调整溶胀和表面特性

双响应poly-( N开发了用聚乙二醇 (PEG) 或聚甲基丙烯酸二甲氨基乙酯 (PDMAEMA) 表面功能化的异丙基丙烯酰胺 (PNIPAM) 微凝胶，以独立调整微凝胶的溶胀行为和表面特性。使用动态光散射在水性悬浮液中和使用表面力装置在基材上研究微凝胶的热触发溶胀和 pH 触发表面性质。在微凝胶表面接枝聚合物链不会妨碍微凝胶在悬浮液中和固定在基材上的热触发溶胀行为。可以获得前所未有的溶胀行为和表面特性的解耦。更特别的是，

更新日期：2021-09-28

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