环聚合物的链条大小和结点在全交叉和内交叉融中
Jiangyang Mo1,2,3, Jingqiao Guo4, Xue Yu1
1Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China.
链间约束增加了环聚合物的结结概率,但没有改变缩放关系. 研究人员在化物中推导出自由能量贡献和验证的大小链长度缩放 (R~N^1/6) .
科学领域:
- 聚合物物理 聚合物物理
- 计算化学的计算化学
- 材料科学 材料科学 材料科学
背景情况:
- 环聚合物表现出独特的拓性质,与线性链不同.
- 了解链间相互作用的影响对于聚合物化行为至关重要.
研究的目的:
- 调查链间约束对环聚合物结结和尺寸的影响.
- 在封闭系统中确定环聚合物性质的缩放关系.
主要方法:
- 动态蒙特卡洛模拟使用债券波动模型.
- 分析结结概率和旋转半径的平均平方.
- 基于结结概率的自由能量贡献的推导.
主要成果:
- 链间约束提高了环聚合物的结结概率.
- 结结概率和链条长度之间的缩放关系不受链际约束的影响.
- 对于环聚合物大小的衍生缩放关系:R~N^{\displaystyle R~N^{\displaystyle R^{\text{N}}^{\text{N}}^{\text{N}}^{\text{N}}^{\text{N}}^{\text{N}^{\text{N}^{\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}\text{N}}\text{N}\text{N}\text{N}\text{N}}\text{N}\text{N}}\text{T}}
结论:
- 链间约束在环聚合物的拓和静态性质中起着重要作用.
- 衍生出的缩放定律为聚合物融行为提供了基本的见解.
- 结结的复杂性会影响环聚合物的大小-链长关系.
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