TY - JOUR
T1 - Self-healable transparent polymer/salt hybrid adhesive
T2 - Via a ternary bonding effect
AU - Zhang, Yuanyuan
AU - Zhang, Ke
AU - Li, Xuanhua
AU - Li, Tong
AU - Ye, Qian
AU - Tan, Li Li
AU - Wei, Bingqing
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2020/11/7
Y1 - 2020/11/7
N2 - Tremendous attention has been focused on the design and fabrication of intrinsic self-healing materials in recent years; however, the fabrication of self-healing materials with high transparency and high adhesion strength is still a challenge. Here, we develop a novel transparent self-healing adhesive with multiple functions by simply blending poly(2-ethyl-2-oxazoline) (PEOZ), poly(4-hydroxy styrene) (PHS), and CaCl2, and discover that the anion Cl- also plays a significant role in accelerating the self-healing process by anion-ligand coordination in the form of hydrogen bonding, which has been seriously neglected in previous work. Unlike the common single metal-ligand coordination approach, the enhancement of self-healing results from novel co-existing ternary bridging bonds: metal-ligand coordination, ionic bond, and anion coordination. The universality of the new concept has been verified with other typical soluble salts MgCl2, NaCl, and Ca(NO3)2, providing a new dimension in the comprehension of the self-healing mechanisms. As a result, the hybrid shows outstanding multifunctional performance compared with the most recently published self-healable adhesives taking into consideration the transparency (T550 = 98.9%), adhesion strength (2.57 MPa), and self-healing efficiency (91%), enabling its application as an optical material, an adhesive and also a conservation material for cultural heritage.
AB - Tremendous attention has been focused on the design and fabrication of intrinsic self-healing materials in recent years; however, the fabrication of self-healing materials with high transparency and high adhesion strength is still a challenge. Here, we develop a novel transparent self-healing adhesive with multiple functions by simply blending poly(2-ethyl-2-oxazoline) (PEOZ), poly(4-hydroxy styrene) (PHS), and CaCl2, and discover that the anion Cl- also plays a significant role in accelerating the self-healing process by anion-ligand coordination in the form of hydrogen bonding, which has been seriously neglected in previous work. Unlike the common single metal-ligand coordination approach, the enhancement of self-healing results from novel co-existing ternary bridging bonds: metal-ligand coordination, ionic bond, and anion coordination. The universality of the new concept has been verified with other typical soluble salts MgCl2, NaCl, and Ca(NO3)2, providing a new dimension in the comprehension of the self-healing mechanisms. As a result, the hybrid shows outstanding multifunctional performance compared with the most recently published self-healable adhesives taking into consideration the transparency (T550 = 98.9%), adhesion strength (2.57 MPa), and self-healing efficiency (91%), enabling its application as an optical material, an adhesive and also a conservation material for cultural heritage.
UR - http://www.scopus.com/inward/record.url?scp=85094909673&partnerID=8YFLogxK
U2 - 10.1039/d0ta06935c
DO - 10.1039/d0ta06935c
M3 - 文章
AN - SCOPUS:85094909673
SN - 2050-7488
VL - 8
SP - 21812
EP - 21823
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 41
ER -