Correlation Between Crystallinity and Rheological Behavior with Short Term Biodegradation for LDPE\Cellulose Composites as Potential Packaging Films

• DOI: 10.20944/preprints202503.1133.v1
• Publication Date: 2025-03-20T01:14:06Z
• Authors: Nizar Jawad Hadi; Tomasz Rydzkowski; Zahraa Sleem Ali; Qassim Ahmed Mekheef
• Keywords: Low-density polyethylene

The need for renewable and biodegradable materials packaging applications has grown significantly in recent years. Growing environmental worries over the widespread using of synthetic non-biodegradable polymeric packaging, particularly polyethylene linked to this increase demand. This work focuses on degradation low-de,nsity LDPE properties which is basically widely used after adding different natural fillers, sustainable, compatible, polymers .The was mixed with (2.5, 5, 10) wt% each (sawdust, powder cellulose, Nano crystalline cellulose CNC). composites melted a twin-screw extruder machine screw speed 50 rpm at 190 C, produce sheets through specific die. These prepare samples rheological test viscosity curve, flow curve non-Newtonian mathematical model capillary rheometer 170, 190,and 210oC. X-ray diffraction tests short period carried out soil pH 6.5 50% humidity 27°C. results showed that melts were shear thinning behavior dominant during curves. increases additives increasing. 5% ratio indicated higher all LDPE\CNC temperatures. fitting proved suitable flows power law LDPE\ sawdust index n lower consistency k compared melt indicate weight loss CNC/LDPE composites, these supported by digital images 30 day. illustrate stronger relation values low rate. vice versa.