Non‐Volatile Glycerin Gel Enhanced by Sub‐5 nm Particles with Super Elasticity, Recoverability, and High Temperature Resistance. Issue 4 (8th January 2019)

• Record Type: Journal Article
• Authors: Li, Lefan; Wang, Qiao; Li, Zongjin; Guo, Siyao; Sun, Guoxing
• Is Part Of: Macromolecular chemistry and physics. Volume 220:Issue 4(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-01-08
• Subjects: high temperature resistance -- mechanical properties -- nanocomposites -- non‐volatile gels; Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201800464
• Languages: English
• ISSNs: 1022-1352

Abstract

Abstract: A gel material that can be applied to industry needs to fulfill two requirements: excellent mechanical properties and high temperature resistance. Previous research developed a hydrogel enhanced by sub‐5 nm particles, with excellent mechanical properties. While its application in the open environment is still limited by the volatilization of inner moisture, in this research, a non‐volatile gel (NV gel) enhanced by 5‐nm spherulites is manufactured. The NV gel remains stable after staying at 90 °C for 24 h. Meanwhile, being enhanced by sub‐5 nm nanospherulites, the NV gel shows good mechanical properties: with 200 ppm nanoparticle content, the tensile strength reaches 814 kPa and the compressive stress is 173.41 MPa at a recoverable 99% strain. The high temperature resistance is characterized by thermogravimetric analysis (TGA) and mechanical testing after thermal treatment. Transmission electron microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, time of flight secondary ion mass spectrometry, and thermogravimetric analysis are used to evaluate the microstructure of NV gel. Possessing non‐volatile and good mechanical properties at the same time, this NV gel becomes very suitable for fulfilling the application requirement as an engineering material. Abstract : A kind of non‐volatile gel with sub‐5 nm nanoparticles to enhance its mechanical property is prepared. The gel can be stretched to 16 times its length with a strength of 814 kPa and can recover after enduring 173.41 MPa pressure, even after drying at 90 °C for 24 h. This non‐volatile gel can be ideal for engineering applications.