In a recent paper, E. J. Janse van Rensburg has presented computational data enumerating the conformations of closed circular self-avoiding lattice polymers with knots confined in a cubic box, and claimed to have observed a negative osmotic pressure in the system. The purpose of this comment is to state that osmotic pressure by a self-avoiding polymer, knotted or otherwise, is positive, which means a polymer pushes confining walls outwards, and the statement of the opposite is a mistake.

中文翻译：

---

评论“压缩的格结的渗透压”。

在最近的一篇论文中，EJ Janse van Rensburg提出了计算数据，该计算数据枚举了具有限制在立方箱中的结的封闭的圆形自规避晶格聚合物的构型，并声称已观察到系统中的负渗透压。该评论的目的是说明被打结或以其他方式打结的自回避聚合物的渗透压为正值，这意味着聚合物将限制壁向外推，相反的说法是错误的。