COIL GLOBULE TYPE TRANSITIONS IN POLYMERS .1. COLLAPSE OF LAYERS OF GRAFTED POLYMER-CHAINS
COIL GLOBULE TYPE TRANSITIONS IN POLYMERS .1. COLLAPSE OF LAYERS OF GRAFTED POLYMER-CHAINS
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DOI：
10.1021/ma00001a023
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发表时间：
1991-01-07
期刊：
影响因子：
5.5
通讯作者：
BIRSHTEIN, TM
中科院分区：
文献类型：
--
作者：
ZHULINA, EB;BORISOV, OV;BIRSHTEIN, TM
平均场分析理论描述的构象转变有关的崩溃层的聚合物链接枝到不渗透的表面上的不同形态（平面表面，一个球体，和一个圆柱体）已经开发。 这种转变的字符的类型的表面形态的依赖性进行了分析。 结果表明，在平面的情况下，这种转变是不是一个真正的热力学相变。 的层伴随着他们的崩溃的结构重排进行了研究。 对平面层的情况进行了最精确的分析。 结果表明，在对比的斑点图片的平面层是不均匀的，作为一个整体，在任何溶剂强度。 得到了任意溶剂强度下单体单元密度和链端沿着层高分布的解析表达式。
The mean-field analytical theory describing the conformational transition related to the collapse of the layers of polymer chains grafted onto the impermeable surfaces of different morphologies (a planar surface, a sphere, and a cylinder) has been developed. The dependence of the character of this transition on the type of the surface morphology is analyzed. It is shown that in the case of a planar surface this transition is not a true thermodynamic phase transition. The structural rearrangement of the layers accompanying their collapse is investigated. The most precise analysis was carried out for the case of a planar layer. It is shown that in contrast to the blob picture the planar layer is inhomogeneous as a whole at any solvent strength. Analytical expressions describing the distribution of monomer units density and chain ends along the layer height at arbitrary solvent strength are obtained.