Compatibilization of recycled polypropylene and recycled poly (ethylene terephthalate) blends with SEBS-g-MA

Abstract

The compatibilization of recycled PP/PET blend with high and low concentration (20 and 5 phr) of elastomer functionalized by maleic anhydride (SEBS-g-MA) was achieved. Recycled polypropylene from plastic industry and recycled PET from post-consumer bottles was used. PP/PET blends: 80:20 w/w, 50:50 w/w and 20:80 w/w were prepared in an internal mixer for mechanical properties, thermal properties, morphology and rheological properties. SEBS-g-MA promoted compatibilization of the PP/PET blends and improved their properties. With an increasing compatibilization level, the refinement of morphology was observed in the PET rich blend. Compatibilized blends showed negative deviation in the PET glass transition temperature related to neat PET, demonstrating that compatibilization was very successful. PET crystallization was accelerated in the blends due to PP presence that enhanced nucleation. It was found that the 50/50/20 blend showed huge potential for textile fiber application and that of 80/20/20 showed more intermediary properties than neat polymers.

Production of a PET//LDPE Laminate Using a Reversibly Crosslinking Packaging Adhesive and Recycling in a Small-Scale Technical Plant

“…To address this problem, there are several approaches that involve either processing the different materials together or separating them [3]. Joint processing yields blends that often have good mechanical properties only with the use of compatibilizers, and where the change in mechanical properties makes closed-loop recycling difficult to imagine [3,[5][6][7][8].…”

From disposal to sustainable development: technological potential of poly(lactic acid) (PLA) blends with 3D filament waste

“…The recycling and reuse of most commodity polymers have been extensively studied over the years (Satya et al, 2020;Luna et al, 2019a;Luna et al, 2015;Luna et al, 2014;Araújo and Morales, 2018;Ferreira et al, 2019a;Aishah et al, 2020), indicating the feasibility of developing blends between virgin and recycled polymers, in controlled quantities. Meanwhile, blends of poly (lactic acid) and PLA waste from 3D filaments have practically not been investigated in polymer literature, thus leaving a gap to be investigated on the reuse of PLA from additive manufacturing.…”

Properties and Morphology of Polypropylene/Big Bags Compounds

“…This serious scenario has worried the society and specifically the scientific community who has researched solutions for reusing and recycling these materials once they result in great problems mainly when improperly discarded in the environment and consequently, become a harmful material to the ecological system 3,4 . Consequently, there is an urgent requirement to develop "new products" made from residues i.e., with the insertion of post-consumer resins, in order to minimize the use of the virgin polymer, reducing costs and the disposal of materials [5][6][7][8][9] .…”