有关Flory-Huggins理论的教学点滴

根据高分子的特点，我们从Boltzmnn熵定理出发，来理解Flory-Huggins晶格模型理论中推导混合熵（△SM）的思路。教学过程中突出高分子溶液中由于高分子相对分子质量大（x个链段），造成高分子的△SM比小分子大得多的结果Hory-Huggins理论与实际情况的偏差；让学生学会用Hory-Hug—gins参数X1，值判断高分子溶液中溶剂的优劣性。

Discussion on Teaching Method of the Flory-Huggins Theory

According to particularity of polymer, the way to apprehend the derivation of the composite entropy （△SM）, in the Flory-Huggins crystal lattice model, is discussed from the Boltzmann theorem. In teaching practice of Flory-Huggins theory, much attention should be paid to that high polymer relative molecular mass （x chain segments）. It will bring more △SM of polymer than that of small molecules in polymer solutions, and errors exist between the Flory-Huggins model and the real polymer solutions. The teaching aim is to guide students to command the estimation of solvent in polymer solutions using Flory-Huggins parameter X1. The teaching efforts emphasize to pilot students in understanding the Flory- Huggins lattice theory and its applications.