期刊
PHYSICAL REVIEW LETTERS
卷 122, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.208001
关键词
-
资金
- Aage og Johanne Louis-Hansen Foundation
- National Science Foundation [DMR-1121107, EFMA-1830957]
- National Institutes of Health [P01-HL108808, R01-HL136961, 5UH3HL123645]
- Cystic Fibrosis Foundation
In the melt state at equilibrium, entangled nonconcatenated ring macromolecules adapt more compact conformations compared to their linear analogs and do not form an entanglement network. We show here that, when subjected to uniaxial stretching, they exhibit a unique response, which sets them apart from any other polymer. Remarkably, whereas both linear and ring polymers strain-harden, the viscosity of the rings increases dramatically (the melt thickens) at very low stretch rates due to the unraveling of their conformations along the stretching direction. At high rates, stretching leads to viscosity thinning similar to that of entangled linear polymers, albeit with subtle differences.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据