Interfacial Behavior of Acetalized Poly(vinyl alcohol) Monolayers Observed by Brewster Angle Microscopy and Canal Surface Viscometry
Interfacial Behavior of Acetalized Poly(vinyl alcohol) Monolayers Observed by Brewster Angle Microscopy and Canal Surface Viscometry
复制标题
通过布鲁斯特角显微镜和根管表面粘度测定法观察缩醛化聚（乙烯醇）单层的界面行为
DOI：
10.1295/polymj.28.784
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发表时间：
1996
期刊：
影响因子：
2.8
通讯作者：
Masahide Yamamoto
中科院分区：
文献类型：
--
作者：
N. Sato;S. Ito;Masahide Yamamoto
通过观察聚合物单分子膜在空气/水界面上的形态变化和测量表面剪切粘度，确定了聚合物单分子膜的界面性质。布鲁斯特角显微镜（BAM）应用于具有不同长度的烷基侧链的缩醛化聚（乙烯醇）的单分子膜。这些聚合物的单分子膜即使在大的表面积下也形成连贯的畴，并且侧链越长，畴变形的程度越小。管道表面粘度也表明，单分子膜的剪切粘度随着侧链碳数的增加而增加。这些发现表明，当烷基链较长时，突出界面的侧链之间的内聚力较强，使得整个单层变得更加粘稠，同时保持液体状特征。
The interfacial properties of polymer monolayers at the air/water interface has been determined by the observation of morphological changes and the measurement of surface shear viscosity. Brewster angle microscopy (BAM) was applied to the monolayers of the acetalized poly(vinyl alcohol)s having alkyl side chains of various lengths. The monolayers of these polymers form coherent domains even at a large surface area, and the longer the side chains are, the smaller the degree of domain deformation is. Canal surface viscometry also showed that shear viscosity of the monolayer increases with the increase in the number of side-chain carbons. These findings indicate that the cohesive force is stronger among the side chains protruding out of the interface when the alkyl chains are longer, so that the entire monolayer becomes more viscous while retaining the liquid-like character.