Comparative Study on Water Vapour Resistance of Poly(lactic acid) Films Prepared by Blending, Filling and Surface Deposit

Abstract

The polylactic acid (PLA) resin Ingeo 4032D was selected as the research object, with a focus on PLA modification by using polymers such as linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE) and ethylene–propylene-diene monomer grafted with glycidyl methacrylate (EPDM-g-GMA), by using fillers such as nano calcium carbonate and zeolite. In order to characterize the deposition effect of Al2O3 on the film surface by plasma-assisted atomic layer deposition, Bio-oriented PLA (BOPLA) with more uniform thickness than blown film was purchased for study. The mechanical properties, friction coefficient, surface contact angle and water vapour transmission rate of the modified PLA film were compared and discussed. The aim was to find out the most influencing factors of film’s water vapour resistance.

An ethyl cellulose novel biodegradable flexible substrate material for sustainable screen-printing

“…From this perspective, this cellulose-based material exhibits comparable behaviour to PLA, one of the most prevalent bioplastics utilized in various industries such as biomedical, textile, and packaging. 32,33 …”

“…From this perspective, this cellulose-based material exhibits comparable behaviour to PLA, one of the most prevalent bioplastics utilized in various industries such as biomedical, textile, and packaging. 32,33 The morphology of the substrates used for the fabrication of the SPEs, i.e. PET, r-PET and EC, underwent characterisation through electronic and optical microscopy.…”