Research Progress on the Regulation of Low-Density Polyethylene Rheological Behaviors Based on Peroxide Modification Method
HE Jiaqiang1, WEI Jijuan2, FAN Xiaoqiang2
1. SINOPEC Qilu Petrochemical Company, Zibo 255400, China;
2. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
Abstract： Low-density polyethylene (LDPE) exhibits favorable mechanical properties, transparency and chemical corrosion resistance, rendering it a fundamental material widely applied in domains such as energy and power, modern agriculture, medical and healthcare, and daily consumer goods. Owing to its complex molecular chain architecture, the mechanism governing its rheological behavior is inherently intricate. This paper presents a review from two perspectives: the mechanism and kinetics of peroxide-induced modification, and the influence of such modification on the molecular chain structure and resultant rheological behavior of low-density polyethylene. Existing studies indicate that molecular weight distribution and entangleable long-chain branches are key factors affecting the rheological properties of LDPE. In regulating the molecular chain structure of low-density polyethylene, methods such as grafting modification, crosslinking modification, and combined chemical-blending modification techniques can be employed to achieve effective control over both molecular chain architecture and rheological characteristics.
HE Jiaqiang,WEI Jijuan,FAN Xiaoqiang. Research Progress on the Regulation of Low-Density Polyethylene Rheological Behaviors Based on Peroxide Modification Method[J]. Chemical Reaction Engineering and Technology, 2026, 42(3): 294-304.
