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Fracture energy of polymer gels with controlled network structures

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タイトル: Fracture energy of polymer gels with controlled network structures
著者: Akagi, Yuki 著作を一覧する
Sakurai, Hayato 著作を一覧する
Gong, Jian Ping 著作を一覧する
Chung, Ung-il 著作を一覧する
Sakai, Takamasa 著作を一覧する
発行日: 2013年10月11日
出版者: American Institute of Physics
誌名: The Journal of Chemical Physics
巻: 139
号: 14
開始ページ: 144905
出版社 DOI: 10.1063/1.4823834
抄録: 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 http://dx.doi.org/10.1063/1.4823834.
資料タイプ: article
URI: http://hdl.handle.net/2115/53822
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 龔 剣萍 (Gong Jian Ping)

 

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