A Dynamic Interface Based on Segregation of an Amphiphilic Hyperbranched Polymer Containing Fluoroalkyl and Oligo(ethylene oxide) Moieties,Macromolecules

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A Dynamic Interface Based on Segregation of an Amphiphilic Hyperbranched Polymer Containing Fluoroalkyl and Oligo(ethylene oxide) Moieties
Macromolecules ( IF 5.1 ) Pub Date : 2020-03-31 , DOI: 10.1021/acs.macromol.9b02064
Yukari Oda _{1,

2} , Manabu Inutsuka ₁ , Ryo Awane ₁ , Masayasu Totani ₁ , Norifumi L. Yamada ₃ , Masayuki Haraguchi ₄ , Masaaki Ozawa ₄ , Hisao Matsuno _{1,

2,

5} , Keiji Tanaka _{1,

2,

5}

Affiliation

An amphiphilic hyperbranched polymer (HBP) containing both fluoroalkyl (R_f: −C₆F₁₃) pendants and oligo(ethylene oxide) (nEO) parts was synthesized as a novel type of interfacial modifier to confer dynamic features on conventional polymer films. The HBP was always segregated at the outermost region of the polymer matrix in contact with air and water phases. The former and latter were driven by the presence of hydrophobic R_f pendants and hydrophilic nEO parts, respectively. Such a dynamic interface can be attained by changing the local conformation of HBP or segment-level segregation in the HBP molecule. In water, nEO parts formed a dissolved layer at the interface and induced excellent bioinert properties. Our strategy based on stable segregation, which could be maintained even after changing the environment, should be useful for constructing functional surfaces.

中文翻译：

基于分离的含氟烷基和低聚（环氧乙烷）两亲性超支化聚合物的动态界面

合成了包含氟烷基（R _f：-C ₆ F ₁₃）侧基和低聚环氧乙烷（n EO）部分的两亲性超支化聚合物（HBP），作为新型界面改性剂，可在常规聚合物薄膜上赋予动态特性。HBP始终隔离在与空气和水相接触的聚合物基质的最外层区域。前者和后者分别受疏水性R _f侧基和亲水性n EO部分的驱动。这种动态界面可以通过改变HBP分子的局部构象或HBP分子中的段级分离来实现。在水中，nEO部件在界面处形成溶解层，并具有出色的生物惰性。我们基于稳定隔离的策略（即使在更改环境后也可以保持）可以用于构造功能表面。

更新日期：2020-04-24

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