Banca de QUALIFICAÇÃO: TÂNIA EVYLLYN DIAS DA SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : TÂNIA EVYLLYN DIAS DA SILVA
DATE: 22/12/2022
TIME: 08:00
LOCAL: PGTEC Sala 310
TITLE:

Development of recycled PET / woven PET blends for textile applications

KEY WORDS:

Recycling, poly (ethylene terephthalate), MMA-GMA, titanium dioxide, fabric industrialized polyester fabrics, extrusion

PAGES: 68
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SPECIALTY: Têxteis
SUMMARY:

The growing consumption of plastics by society has generated environmental problems, where a large amount of poorly discarded materials are found in the environment or by the misuse of their waste, with the need to find solutions to minimize the impact of these materials. Therefore, this project aimed to develop filaments to be applied in the textile industry, through the use of polyester from recyclable materials, originating from PET bottles and fabric waste from the clothing industry. The mixture of polymer blends was carried out in a twin-screw extruder, where binary blends formed by recycled bottle-grade poly(ethylene terephthalate) (recycled PET) with poly(ethylene terephthalate) obtained from industrialized fabrics (woven PET) were developed, and compatible with ethylene-methyl-acrylate-glycidyl methacrylate copolymer (EMA-GMA). The formulations of the polymer blends were varied from 100 wt% of recycled PET, with the formulations increasing from 10 by 10 wt% of woven PET to the composition of 100 wt% of woven PET. In addition, 3 wt% of EMA-GMA was used as an interfacial compatibilizing agent. After mixing, plastification with the production of filaments from the binary and compatibilized blends were produced in a single screw extruder. The characterizations of these polymer blends were carried out by: melt flow index measurements (MFI), differential scanning calorimetry (DSC), X-ray fluorescence (FRX), X-ray diffraction (DRX), density measurements by pycnometry, filament tests by uniaxial tensile tests and morphological by scanning electron microscopy (SEM). Through the preliminary characterizations, it was possible to identify an optimized concentration of woven PET in the recycled PET/woven PET blend, in addition to confirming that the addition of MMA-GMA led to the synergism of properties, as well as the stability of the filaments during flow.
The use of white woven PET, that is, with the use of titanium dioxide (TiO2) as a color additive, corroborated changes in the properties of polymer blends and this interaction of MMA-GMA with TiO2 in woven PET led to synergistic changes of recycled PET/woven PET/MMA-GMA blends.

COMMITTEE MEMBERS:
Presidente - 1639676 - EDSON NORIYUKI ITO
Externa ao Programa - 1150673 - IRIS OLIVEIRA DA SILVA - UFRNExterno à Instituição - JOSÉ KAIO MAX ALVES DO RÊGO - UFS