Impact-induced gelation in aqueous methylcellulose solutions. 2018

Galit Parvari, and Yonatan Rotbaum, and Yoav Eichen, and Daniel Rittel
Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 3200008, Israel. galitpar@technion.ac.il.

Aqueous methylcellulose is an "abnormal" inverse-freezing fluid, which gelates when heated. We ventured to stimulate this phase-transition by mechanical impact, whose resulting shockwaves and local heat could be uptaken by the endothermic gelation. High-speed photography was used to observe this transition in microsecond timescales. This phenomenon enables attenuation of shockwaves.

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