To deepen our knowledge of the film formation and the structure–property relations of poly(furfuryl glycidyl ether)-block-poly(ethylene glycol) (PFGE_p-b-PEG_q) macromonomers at the air–water interface, we synthesized PFGE_p-b-PEG_q in six different block lengths. The molar mass of the PFGE_p-b-PEG_q macromonomers varied from ∼2000 g mol⁻¹ to ∼7000 g mol⁻¹ and included a wide range of hydrophilic–lipophilic balance (HLB) values between 3.6 and 13.9. Surface pressure–area (π–A) isotherms of these amphiphilic macromonomers revealed that the block lengths and the molar mass influence the isotherm shape and onset. Smaller, more hydrophobic macromonomers (HLB < 8) showed a steeper surface pressure increase in the liquid condensed phase compared to larger, more hydrophilic macromonomers with HLB > 8. The molecular area for isotherm onsets increased almost linearly with growing molar mass of the macromonomers. Static and dynamic film stability measurements demonstrated limited stability of all macromonomer monolayers at the air–water interface. The more hydrophilic macromonomers PFGE₈-b-PEG₇₉, PFGE₁₈-b-PEG₆₆ and PFGE₁₃-b-PEG₁₁₁ (HLB > 8) showed higher film stability compared to the more hydrophobic macromonomers (HLB < 8). Hysteresis experiments displayed an almost linear increase of the film degradation with rising HLB values of the macromonomers. Due to partial film recovery of our macromonomers, we propose an interplay between a reversible folding and an irreversible submersion mechanism for the macromonomer monolayers at the air–water interface. The molecular structure and the film forming ability of the macromonomers at the air–water interface indicate that they are promising surface functionalization reagents for materials formed from aqueous solutions, such as hydrogels. In this regard, PFGE₁₀-b-PEG₉ is the most promising hydrogel surface functionalization reagent, because it can introduce the highest number of functional groups per surface area.

中文翻译：

---

两性聚（糠基缩水甘油醚）-嵌段-聚（乙二醇）大分子单体在气-水界面的结构-性质关系

加深对成膜和聚的结构-性能关系的知识（糠缩水甘油基醚） -嵌段-聚（乙二醇）（PFGE _p - b -PEG _q）在空气-水界面大分子单体，我们合成PFGE _p -六种不同嵌段长度的b -PEG _q。PFGE _p - b -PEG _q大分子单体的摩尔质量在〜2000 g mol ^-1至〜7000 g mol ^{-1之间变化，}并包括3.6至13.9的宽范围的亲水-亲脂平衡（HLB）值。表面压力-面积（π -甲这些两亲性大分子单体的等温线表明，嵌段的长度和摩尔质量影响等温线的形状和开始。与更大，更亲水的HLB> 8的大分子单体相比，更小，更疏水的大分子单体（HLB <8）在液相冷凝相中显示出更陡的表面压力增加。等温线发作的分子面积几乎随大分子单体摩尔质量的增加而线性增加。静态和动态薄膜稳定性测量结果表明，所有大分子单体单层在空气-水界面的稳定性有限。亲水性更高的大分子单体PFGE ₈ - b -PEG ₇₉，PFGE ₁₈ - b -PEG ₆₆和PFGE ₁₃ - b与疏水性更高的大分子单体（HLB <8）相比，-PEG ₁₁₁（HLB> 8）显示出更高的膜稳定性。磁滞实验显示，随着大分子单体HLB值的升高，薄膜降解几乎呈线性增加。由于大分子单体的部分薄膜回收，我们提出了大分子单体单层在空气-水界面的可逆折叠与不可逆浸没机制之间的相互作用。大分子单体在空气-水界面处的分子结构和成膜能力表明，它们是用于由水溶液（例如水凝胶）形成的材料的有前途的表面官能化试剂。在这方面，PFGE ₁₀ - b -PEG ₉ 是最有前途的水凝胶表面功能化试剂，因为它可以在每个表面积上引入最多数量的官能团。