作者：Xin Liu, Qin Zhang, Kunming Li, Lijie Duan, and Guanghui Gao
关键字：hydrogels
论文来源：期刊
发表时间：2018年

Abstract: Nucleobase pairs of adenine and uracil (A-U) from

ribonucleic acid are of particular interest for various promising

material properties. Herein, a novel polyacrylamide hydrogel

with adhesive properties that are assisted by adenine

and uracil has been designed and investigated. The incorporation

of adenine and uracil enables the formation of a polyacrylamide

hydrogel with remarkable adhesive behaviour

with various materials including polytetrafluoroethylene

(PTFE), plastics, rubber, glasses, metal, ceramics and wood.

Moreover, the adhesive hydrogel can easily and directly

adhere to humid biological tissues without any extra process,

including heart, liver, spleen, lung, kidney, bone and

muscle of mouse. More impressively, even after repeated

peeling tests (10V), the AU-mediated polyacrylamide hydrogel

still exhibits excellent durable adhesion for various materials.

From mechanical contact tests, the adhesion energy of

the A-U adhesive hydrogel is 47.9 Jm@2, which is nearly nine

times that of polyacrylamide hydrogel (5.3 Jm@2). The 908

peeling strength for aluminium, titanium, silica rubbers,

glasses, PTFE and hogskin is 518, 645, 445, 396, 349, and

119 Nm@1, respectively. The multipurpose and durable adhesive

behaviour of hydrogels assisted by adenine and uracil

indicated the promise of nucleobase pairs from ribonucleic

acid for the future development of adhesive materials.