Researchers have developed the first 3D-printable ‘bottlebrush’ elastomer. The new material results in printed objects that have unusual softness, elasticity and mechanical properties that closely resemble those of human tissue. Unique molecular structure of bottlebrush elastomers facilitate bioprinting in room temperature, without the need for any cross-linkers or solvents.

reference:

Xie R, Mukherjee S, Levi AE et al. Room temperature 3D printing of super-soft and solvent-free elastomers. Sci. Adv. 6(46), eabc6900 (2020);

https://www.news.ucsb.edu/2021/020169/3d-printing-polymers