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Fracture energy of polymer gels with controlled network structures

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Title: Fracture energy of polymer gels with controlled network structures
Authors: Akagi, Yuki Browse this author
Sakurai, Hayato Browse this author
Gong, Jian Ping Browse this author →KAKEN DB
Chung, Ung-il Browse this author
Sakai, Takamasa Browse this author →KAKEN DB
Issue Date: 11-Oct-2013
Publisher: American Institute of Physics
Journal Title: The Journal of Chemical Physics
Volume: 139
Issue: 14
Start Page: 144905
Publisher DOI: 10.1063/1.4823834
Abstract: We have investigated the fracture behaviors of tetra-arm polyethylene glycol (Tetra-PEG) gels with controlled network structures. Tetra-PEG gels were prepared by AB-type crosslink-coupling of mutually reactive tetra-arm prepolymers with different concentrations and molecular weights. This series of controlled network structures, for the first time, enabled us to quantitatively examine the Lake-Thomas model, which is the most popular model predicting fracture energies of elastomers. The experimental data showed good agreement with the Lake-Thomas model, and indicated a new molecular interpretation for the displacement length (L), the area around a crack tip within which the network strands are fully stretched. L corresponded to the three times of end-to-end distance of network strands, regardless of all parameters examined. We conclude that the Lake-Thomas model can quantitatively predict the fracture energy of polymer network without trapped entanglements, with the enhancement factor being near 3.
Rights: Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Chem. Phys. 139, 144905, 2013 and may be found at
Type: article
Appears in Collections:生命科学院・先端生命科学研究院 (Graduate School of Life Science / Faculty of Advanced Life Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 龔 剣萍 (Gong Jian Ping)

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