Bormashenko Edward
Engineering Faculty, Chemical Engineering, Biotechnology and Materials Department, Ariel University, P.O. BOX 3, Ariel 407000, Israel.
Entropy (Basel). 2018 Sep 16;20(9):712. doi: 10.3390/e20090712.
The notion of three-phase (line) tension remains one of the most disputable notions in surface science. A very broad range of its values has been reported. Experts even do not agree on the sign of line tension. The polymer-chain-like model of three-phase (triple) line enables rough estimation of entropic input into the value of line tension, estimated as Γ e n ≅ k B T d m ≅ 10 - 11 N , where d m is the diameter of the liquid molecule. The introduction of the polymer-chain-like model of the triple line is justified by the "water string" model of the liquid state, predicting strong orientation effects for liquid molecules located near hydrophobic moieties. The estimated value of the entropic input into the line tension is close to experimental findings, reported by various groups, and seems to be relevant for the understanding of elastic properties of biological membranes.
三相（线）张力的概念仍是表面科学中最具争议的概念之一。已报道其取值范围非常广泛。专家们甚至对线张力的符号都未达成一致。三相（三线）线的聚合物链状模型能够粗略估计线张力值中的熵贡献，估计值为Γen≅kBTdm≅10−11N，其中dm是液体分子的直径。三线聚合物链状模型的引入是由液态的“水链”模型所支持的，该模型预测了位于疏水部分附近的液体分子具有强烈的取向效应。线张力中熵贡献的估计值与各研究小组报道的实验结果相近，似乎与理解生物膜的弹性特性相关。
