高分子链空间构象分布的复杂性——Θ条件下能量与尺寸的分布

COMPLEXITY OF CHAIN CONFORMATIONAL DISTRIBUTION OF POLYMERS

通过高分子链的模型的计算来研究高分子链构象的尺寸与能量的分布．结果表明，高分子的链构象在小尺寸范围布居数增多；高分子的链构象在小尺寸范围存在比较稳定的链构象状态；在小尺寸范围比较稳定的链构象多具有类似棒状等非球形结构；高分子的链构象的尺寸与能量的分布显示熵弹性具有不对称性．

Chain conformational distribution in a two dimensional space of the chain dimension and the conformational energy have been studied using the rotational isomeric state model in the present work.It shows that (1) the number of chain conformation considerably enhances in the area of small chain dimensions; (2) in the small chain dimension area there still exist some of stable chain conformations; (3) these conformations in the small chain dimension area possess structures of rod like shape; (4) the chain conformational distribution studied implies an asymmetry of entropy elasticity of the polymer chain system.