Carbodiimide-driven toughening of interpenetrated polymer networks DOI Creative Commons

Chamoni W. H. Rajawasam,

Corvo Tran, Jessica L. Sparks

и другие.

Опубликована: Сен. 19, 2023

Recent work has demonstrated that temporary crosslinks in polymer networks generated by chemical “fuels” afford materials with large, transient changes their mechanical properties. This can be accomplished carboxylic-acid-functionalized hydrogels using carbodiimides, which generate anhydrides lifetimes on the order of minutes to hours. Here, impact architecture properties was explored. Single (SNs) were compared interpenetrated (IPNs). Notably, semi-IPN precursors give IPNs treatment carbodiimide gave much higher fracture energies (i.e., resistance fracture) and superior compressive strain other network structures. A precursor material featuring acrylic acid only free chains yields, carbodiimide, an IPN a energy 2400 J/m2, fourfold increase analogous yields SN. enables formation macroscopic complex cut patterns, even at high strain, underscoring pivotal role performance.

Язык: Английский

Carbodiimide-driven toughening of interpenetrated polymer networks DOI Creative Commons

Chamoni W. H. Rajawasam,

Corvo Tran, Jessica L. Sparks

и другие.

Опубликована: Сен. 19, 2023

Recent work has demonstrated that temporary crosslinks in polymer networks generated by chemical “fuels” afford materials with large, transient changes their mechanical properties. This can be accomplished carboxylic-acid-functionalized hydrogels using carbodiimides, which generate anhydrides lifetimes on the order of minutes to hours. Here, impact architecture properties was explored. Single (SNs) were compared interpenetrated (IPNs). Notably, semi-IPN precursors give IPNs treatment carbodiimide gave much higher fracture energies (i.e., resistance fracture) and superior compressive strain other network structures. A precursor material featuring acrylic acid only free chains yields, carbodiimide, an IPN a energy 2400 J/m2, fourfold increase analogous yields SN. enables formation macroscopic complex cut patterns, even at high strain, underscoring pivotal role performance.

Язык: Английский

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