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环型嵌段高分子没有自由端,分相结构会存在两种嵌段共混相区,使经典的线型嵌段高分子强分凝理论不能适用.在强分凝极限下,推导了两个共混相区之间的界面能,并结合两端固定在不同界面上的链的拉伸能,从而建立了环型嵌段高分子的强分凝理论研究方法.将此理论应用于环型两嵌段高分子体系,发现环型链比等链长的线型链更难相分离,且相结构周期远小于线型链.这与自洽场理论的结果一致.将此理论应用于环型三嵌段高分子,发现三元相图中心附近出现多种无共混相区的砖块堆积结构,而在靠近相图边缘部分,即组分比例较不对称时,含共混相区的层状和柱状结构占优势.
The ring-block polymer has no free ends, and there are two kinds of block-blended phase domains in the phase-separation structure, which makes the classical theory of linear block- The interfacial energy between the phases in the blend phase and the tensile energy of the chains fixed on the different interfaces at both ends were established.This method was applied to the study of the strong condensation theory of the ring- It is found that ring-type chains are more difficult to phase separation than chain-like ones, and the phase structure is much shorter than that of the linear chains, which is in agreement with the self-consistent field theory. Triblock polymer, found that there are a variety of non-co-phase brick block stacking near the center of the phase diagram, and near the edge of the phase diagram, that is, when the composition ratio is less symmetrical, And columnar structure dominant.