Zobrazeno 1 - 10
of 563
pro vyhledávání: '"Sakai, Takamasa"'
The swelling kinetics of charged polymer gels reflect the complex competition among elastic, mixing, and ionic contributions. Here, we used dynamic light scattering to investigate the collective diffusion coefficient of model gels, whose polymer netw
Externí odkaz:
http://arxiv.org/abs/2401.17551
Autor:
Masubuchi, Yuichi, Doi, Yuya, Ishida, Takato, Sakumichi, Naoyuki, Sakai, Takamasa, Mayumi, Koichi, Sato, Kotaro, Uneyama, Takashi
The influence of node functionality (f) on the fracture of polymer networks remains unclear. While many studies have focused on multi-functional nodes with f>4, recent research suggests that networks with f=3 exhibit superior fracture properties comp
Externí odkaz:
http://arxiv.org/abs/2307.09832
We experimentally measure the osmotic pressures of linear polymers and three-, four-, and eight-arm star polymers in a good solvent via membrane osmometry. These results reveal that the osmotic equations of state in the star polymer solutions are uni
Externí odkaz:
http://arxiv.org/abs/2302.13669
Polymer gels such as jellies and soft contact lenses are soft solids consisting of three-dimensional polymer networks swollen with a large amount of solvent. For approximately 80 years, the swelling of polymer gels has been described using the Flory-
Externí odkaz:
http://arxiv.org/abs/2210.15275
Autor:
Ishikawa, Shohei, Iwanaga, Yasuhide, Uneyama, Takashi, Li, Xiang, Hojo, Hironori, Fujinaga, Ikuo, Katashima, Takuya, Saito, Taku, Chung, Ungil, Sakumichi, Naoyuki, Sakai, Takamasa
Publikováno v:
Nature Materials 22, 1564 (2023)
Cosmic large-scale structures, animal flocks, and living tissues are non-equilibrium organized systems created by dissipative processes. Despite the uniqueness, the realization of dissipative structures is still difficult. Herein, we report that a ne
Externí odkaz:
http://arxiv.org/abs/2202.09754
Autor:
Fujiyabu, Takeshi, Sakai, Takamasa, Kudo, Ryota, Yoshikawa, Yuki, Katashima, Takuya, Chung, Ung-il, Sakumichi, Naoyuki
Publikováno v:
Phys. Rev. Lett. 127, 237801 (2021)
The swelling dynamics of polymer gels are characterized by the (collective) diffusion coefficient $D$ of the polymer network. Here, we measure the temperature dependence of $D$ of polymer gels with controlled homogeneous network structures using dyna
Externí odkaz:
http://arxiv.org/abs/2106.15957
Autor:
Fujiyabu, Takeshi, Sakumichi, Naoyuki, Katashima, Takuya, Liu, Chang, Mayumi, Koichi, Chung, Ung-il, Sakai, Takamasa
Publikováno v:
Science Advances 8, eabk0010 (2022)
Unlike hard materials such as metals and ceramics, rubbery materials can endure large deformations due to the large conformational degree of freedom of the crosslinked three-dimensional polymer network. However, the effect of the branching factor of
Externí odkaz:
http://arxiv.org/abs/2106.13424
Autor:
Nepal, Shant, Si, Jinyan, Ishikawa, Shohei, Nishikawa, Masaki, Sakai, Yasuyuki, Akimoto, Aya M., Okada, Hiroyuki, Ohba, Shinsuke, Chung, Ung-il, Sakai, Takamasa, Hojo, Hironori
Publikováno v:
In Regenerative Therapy March 2024 25:24-34
Autor:
Liu, Chang, Fujiyabu, Takeshi, Morimoto, Naoya, Jiang, Lan, Yokoyama, Hideaki, Sakai, Takamasa, Mayumi, Koichi, Ito, Kohzo
Most tough hydrogels are reinforced by introducing sacrificial structures that can dissipate input energy. However, since the sacrificial damages cannot recover instantly, the toughness of these gels drops substantially during consecutive cyclic load
Externí odkaz:
http://arxiv.org/abs/2104.00450