Self-Sealing Polyolefin by Super-Absorbent Polymer

He Zhang 1, 2, Email

Yong Bing Chong 2 

Ying Zhao 3

Andrey Buryak 4

Fei Duan 2, Email

Jinglei Yang 2, 3, Email

1 The National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory of Polymer Processing Engineering (SCUT), Ministry of Education, South China University of Technology, Guangzhou, China, 510641

2 School of Mechanical and Aerospace Engineering, Nanyang Technological University, 639798, Singapore

3 Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, China

4 Borouge PTE, Borouge Innovation center, Sas Al Nakhl, Abu Dhabi, UAE


In this study, self-sealing polyethylene (PE) was successfully achieved via incorporating super-absorbent polymer (SAP). Attributed to the high thermal stability, the SAP particles can survive through the harsh processing conditions during thermal extrusion and hot pressing. PE specimens with different concentrations of SAP particles of different sizes show good sealability with fast response to water penetration through pin-hole and crack defects. It was observed that a higher concentration of smaller SAP particles enables better sealing performance under normal pressure. Additionally, repeated sealing can be achieved with full sealability due to the left SAP residue from the last cycle in the defects.

Self-Sealing Polyolefin by Super-Absorbent Polymer