Highly Stretchable Self-Healing Nanocomposite Hydrogel Reinforced by 5 nm Particles
Xiaosai Hu, Rui Liang, Jun Li, Zhengping Liu and Guoxing Sun
1 Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau,Avenida da Universidade, Taipa, Macau, 999078, China
2 College of Chemistry, Beijing Normal University, Beijing, 100875, China
Abstract
This study firstly reports that low content of non-aggregated calcium hydroxide (Ca(OH)2) nano-spherulites (CNS) (200 ppm, diameters <5 nm) acting as cross-linkers pioneers highly stretchable self-healing PAA/CNS nanocomposite hydrogel (NC gel). Such NC gel exhibits increased mechanical properties (2300 % of tensile strain, 72 kPa of tensile strength, 0.611 MJ/m3 of toughness), excellent self-recovery (high recoverability against elongation of up to 1800% with tensile stress of 35 kPa), and most notably, remarkable self-healing ability (extensibility of 2100 % and toughness of 0.599 MJ/m3), suggesting even a small amount of CNS helps to establish a high stretchable and outstanding self-healing hydrogel.
Publication details
Received: 02 Sep 2018
Revised: 19 Oct 2018
Accepted: 28 Oct 2018
Published online: 29 Oct 2018
Article type:
Research Paper
DOI:
10.30919/esmm5f158
Volume:
2
Page:
16-23
Citation:
ES Materials & Manufacturing, 2018, 2, 16-23
Permissions:
Copyright
Number of downloads:
2599
Citation Information:
10
Description:
This study firstly reports that low content of non-aggregated calcium hydroxide (Ca(OH)2) nano-spher....
This study firstly reports that low content of non-aggregated calcium hydroxide (Ca(OH)2) nano-spherulites (CNS) (200 ppm, diameters <5 nm) acting as cross-linkers pioneers highly stretchable self-healing PAA/CNS nanocomposite hydrogel (NC gel). Such NC gel exhibits increased mechanical properties (2300 % of tensile strain, 72 kPa of tensile strength, 0.611 MJ/m3 of toughness), excellent self-recovery (high recoverability against elongation of up to 1800% with tensile stress of 35 kPa), and most notably, remarkable self-healing ability (extensibility of 2100 % and toughness of 0.599 MJ/m3), suggesting even a small amount of CNS helps to establish a high stretchable and outstanding self-healing hydrogel.
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