Banca de DEFESA: GABRIEL DA CUNHA COTRIM

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : GABRIEL DA CUNHA COTRIM
DATE: 22/11/2024
TIME: 14:00
LOCAL: Videoconferência Plataforma Teams
TITLE:

Development of Recycled Polylactic Acid Nanocomposite: Incorporation of Graphene for Enhanced Properties

KEY WORDS:

PLA, graphene, nanocomposites, 3D printing, recycling

PAGES: 40
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUMMARY:

This study investigates the recycling of polylactic acid (PLA) waste, aiming to extend the lifespan of this widely used material in 3D printing, contributing to energy and natural resource savings. To enhance the properties of recycled PLA, the incorporation of graphene was explored, a material known for its great potential in nanocomposites due to its mechanical and conductive properties. PLA waste was shredded and mixed with 0.18% by weight of graphene using a twin-screw extruder. The materials were then injection-molded into test specimens according to ASTM D638. Chemical (FTIR), thermal (TG and DSC), mechanical (tensile testing), morphological (SEM), and conductivity characterizations were performed. The results indicated that recycled PLA, even with the addition of graphene, did not show an increase in electrical conductivity. However, the thermal behavior of PLA remained as expected, with no significant changes. Additionally, the nanocomposite maintained the mechanical properties characteristic of PLA, demonstrating the potential for efficient recycling of the material.

COMMITTEE MEMBERS:
Externa à Instituição - JADNA CATAFESTA
Interna - 1436914 - CARLA TATIANA MOTA ANFLOR
Presidente - 1720225 - SANDRA MARIA DA LUZ
Interna - 2213675 - SUZANA MOREIRA AVILA