2024-03-29T05:27:50Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/828992022-11-17T02:08:08Zhdl_2115_20055hdl_2115_8527Molecular mechanism of abnormally large nonsoftening deformation in a tough hydrogelYe, Ya NanCui, KunpengHong, WeiLi, XueyuYu, ChengtaoHourdet, DominiqueNakajima, TasukuKurokawa, Takayuki1000020250417Gong, Jian Pingopen accesstough hydrogelnonsofteninglarge quasi-linear deformationhyperconnective networkmolecular glue431Tough soft materials usually show strain softening and inelastic deformation. Here, we study the molecular mechanism of abnormally large nonsoftening, quasi-linear but inelastic deformation in tough hydrogels made of hyperconnective physical network and linear polymers as molecular glues to the network. The interplay of hyperconnectivity of network and effective load transfer by molecular glues prevents stress concentration, which is revealed by an affine deformation of the network to the bulk deformation up to sample failure. The suppression of local stress concentration and strain amplification plays a key role in avoiding necking or strain softening and endows the gels with a unique large nonsoftening, quasi-linear but inelastic deformation.National Academy of Sciences.2021-04-06engjournal articleAMhttp://hdl.handle.net/2115/82899https://doi.org/10.1073/pnas.20146941180027-8424Proceedings of the National Academy of Sciences of the United States of America (PNAS)11814e2014694118https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/82899/1/Proc.%20Natl.%20Acad.%20Sci.%20U.%20S.%20A.118-14_e2014694118.pdfapplication/pdf1.33 MB2021-04-06https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/82899/2/Proc.%20Natl.%20Acad.%20Sci.%20U.%20S.%20A.Supporting%20Information.pdfapplication/pdf854.55 KB2021-04-06