Forces between mica and end-grafted statistical copolymers of sulfobetaine and oligoethylene glycol in aqueous electrolyte solutions.
Forces between mica and end-grafted statistical copolymers of sulfobetaine and oligoethylene glycol in aqueous electrolyte solutions.
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DOI：
10.1016/j.jcis.2021.09.175
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发表时间：
2022-02-15
影响因子：
9.9
通讯作者：
Leckband, Deborah E.
中科院分区：
文献类型：
--
作者：
Ahmed, Syeda Tajin;Leckband, Deborah E.
本研究调查了与磺基甜菜碱甲基丙烯酸酯（SBMA）和低聚乙二醇甲基丙烯酸酯（OEGMA）（聚（SBMA-co-OEGMA））的末端接枝，统计（AB）共聚物的界面力。表面力仪器测量比较云母和含有0，40，或80摩尔% SBMA的端部接枝共聚物之间的力。研究比较了在低接枝密度（非重叠蘑菇）和高密度（刷）下测量的力。在高密度下，排斥力的范围并没有随着SBMA含量的增加而显着变化。相反，在低密度下，排斥的范围和幅度都随着SBMA在链中的百分比而增加。膜厚度和排斥力的离子强度依赖性增加类似SBMA含量，反映了带电单体的影响和它们与溶液中离子的相互作用。力和拟合参数随SBMA含量连续变化。这种行为表明，乙二醇和磺基甜菜碱表现为非相互作用的，可混溶的单体，独立地贡献的界面力。结果表明，统计聚（SBMA-co-OEGMA）膜的分子尺度性能可以很容易地通过简单的单体比例的变化进行调整。
This study investigated the interfacial forces associated with end-grafted, statistical (AB) co-polymers of sulfobetaine methacrylate (SBMA) and oligoethylene glycol methacrylate (OEGMA) (poly(SBMA-co-OEGMA)). Surface force apparatus measurements compared forces between mica and end-grafted copolymers containing 0, 40, or 80 mole% SBMA. Studies compared forces measured at low grafting density (non overlapping mushrooms) and at high density (brushes). At high density, the range of repulsive forces did not change significantly with increasing SBMA content. By contrast, at low density, both the range and the amplitude of the repulsion increased with the percentage of SBMA in the chains. The ionic strength dependence of the film thickness and repulsive forces increased similarly with SBMA content, reflecting the increasing influence of charged monomers and their interactions with ions in solution. The forces and fitted parameters change continuously with the SBMA content. This behavior suggests that ethyene glycol and sulfobetaine behave as non interacting, miscible monomers that contribute independently to the interfacial forces. The results suggest that molecular scale properties of statistical poly(SBMA-co-OEGMA) films can be readily tuned by simple variation of the monomer ratios.
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影响因子：
5.5
作者：
Cheng, Nan;Brown, Andrew A.;Huck, Wilhelm T. S.
通讯作者：
Huck, Wilhelm T. S.
影响因子：
19
作者：
Ahmed, Syeda Tajin;Leckband, Deborah E.
通讯作者：
Leckband, Deborah E.
影响因子：
9.9
作者：
ISRAELAC.JN
通讯作者：
ISRAELAC.JN
影响因子：
4.4
作者：
DUBOIS, LH;ZEGARSKI, BR;NUZZO, RG
通讯作者：
NUZZO, RG
DOI：
10.1098/rspa.1974.0063
发表时间：
1974-01-01
期刊：
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
影响因子：
--
作者：
DOLAN, AK;EDWARDS, SF
通讯作者：
EDWARDS, SF