Effect of LLDPE on Aging Resistance and Thermal, Mechanical, Morphological Properties of UHMWPE/LLDPE Blends

Abstract

Blends of ultra-high molecular weight polyethylene (UHMWPE) and different contents (0, 10, 20 and 30 wt%) of linear low-density polyethylene (LLDPE) with and without maleic anhydridegrafted LLDPE (LLDPE-g-MA) were prepared by melt blending and aging resistance, thermal and mechanical properties were evaluated. The degree of crystallinity increases with the content of LLDPE in the blends. On the other hand, the addition of compatibilizer agent modifies the crystallinity and the crystallite size. Non-compatibilized blends have excellent impact resistance properties and the addition of LLDPE-g-MA aids processing but decrease the impact resistance of the blends. Thermal and mechanical properties were greatly affected by thermal and water aging. The thermal aging leads to an increase in the degree of crystallinity and consequent a decrease in impact resistance.

Morphology evolution and mechanical property enhancement of linear low‐density polyethylene by adding disentangled ultrahigh molecular weight polyethylene

“…It has been observed in Figure 4 that a small amount of UHMWPE is well miscible with LLDPE to form a honeycomb structure. It plays an important role in strengthening and toughening 35 …”

Characterization of linear low‐density polyethylene and halloysite nanotube (LLDPE/HNT) composites based on two‐roll calendering melt fabrication

“…The polyethylene presents an orthorhombic crystal lattice, and the diffraction profiles are relative to the aforementioned crystallographic planes. 45,46 The characteristic peaks of LLDPE can be clearly observed in the nanocomposite samples. This indicates the crystalline structure of LLDPE was not significantly affected by compounding with different amounts of HNTs.…”

Hierarchical structure and properties of high‐density polyethylene (HDPE) microporous films fabricated via thermally‐induced phase separation (TIPS): Effect of presence of ultra‐high molecular weight polyethylene (UHMWPE)

“…), which has been widely concerned by researchers in recent years. [18][19][20][21] However, UHMWPE has been characterized by high viscosity, poor fluidity, and difficult processing, which makes it difficult to be processed by traditional mechanical methods. In view of this, it is nearly impossible to use UHMWPE as a film material alone in current industrial applications.…”

“…Ultra‐high molecular weight polyethylene (UHMWPE), a thermoplastic engineering plastic, has many wonderful properties (e.g., good mechanical properties, good wear resistance and heat resistance, strong anti‐aging ability, good chemical stability, etc. ), which has been widely concerned by researchers in recent years 18–21 …”