Online Archive of University of Virginia Scholarship
Independently Control over Stiffness and Extensibility of Elastomer174 views
Author
Gong, Zihao, Materials Science - School of Engineering and Applied Science, University of Virginia0000-0002-0791-947X
Advisors
Gong, Zihao, Materials Science and Engineering, University of Virginia
Abstract
Elastomer networks are unique compared to hard materials such as metal and ceramic due to their small stiffness, large stretchability and ability to get back to its original size and shape after deformation. Yet the stiffness and stretchability of an elastomer network are intrinsically correlated: an elastomer network with a higher stiffness is less stretchable. To achieve independent control over the stiffness and extensibility of elastomer network, we designed linear-hybrid bottlebrush-linear (LhBBL) triblock copolymers, in which end blocks are linear polymers of relatively a high glass transition temperature Tg, whereas the middle blocks consist both bottlebrush polymers of relatively a low glass transition temperature Tg and short linear polymers of relatively a high glass transition temperature Tg. We use tensile test to investigate the mechanical behavior of the LhBBL copolymers. By increasing the ratio between short linear polymers and bottlebrush polymers, the elastomers exhibit stable stiffness but increasing extensibility.
Degree
MS (Master of Science)
Keywords
Elastomer; Stiffness; Extensibility
Language
English
Rights
All rights reserved (no additional license for public reuse)
Gong, Zihao. Independently Control over Stiffness and Extensibility of Elastomer. University of Virginia, Materials Science - School of Engineering and Applied Science, MS (Master of Science), 2021-12-12, https://doi.org/10.18130/w4ed-xe92.