We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Análise da degradação de PP e PET em solução de tamarindo por MEV e FTIR
AI summary Read the abstract
Brazilian researchers used scanning electron microscopy (SEM) and FTIR spectroscopy to assess the degradation of polypropylene (PP) and PET plastics when immersed in tamarind solution. Both polymers showed surface degradation changes, suggesting organic acid-rich environments may accelerate plastic breakdown and microplastic generation.
O descarte inadequado de polímeros, especialmente de plásticos descartáveis, representa um desafio ambiental significativo, devido ao potencial poluente dos microplásticos em solos e oceanos, o que impacta negativamente os ecossistemas e a saúde humana. Este estudo teve como objetivo avaliar a degradação de polipropileno (PP) e poli(tereftalato de etileno) (PET), materiais obtidos por meio da coleta seletiva no IFCE – Campus Quixadá, utilizando uma solução à base de tamarindo (Tamarindus indica). A metodologia incluiu a preparação de amostras de PP e PET, expostas à solução por períodos de 15, 30, 45, 60 e 90 dias, seguida de análises realizadas por microscopia eletrônica de varredura (MEV) e espectroscopia no infravermelho por transformada de Fourier (FTIR). Os resultados das micrografias indicaram uma possível adsorção da solução nas superfícies dos polímeros, além da presença de estruturas esferulíticas, o que sugere uma predisposição a processos de degradação. Embora as análises complementares não tenham evidenciado alterações significativas nos materiais ao longo do período estudado, os resultados reforçam a necessidade de investigações adicionais sobre o potencial de soluções naturais na degradação de microplásticos. Este estudo contribui para a busca de alternativas sustentáveis no pós-consumo de polímeros de curta vida útil, ampliando perspectivas para avanços na gestão de resíduos plásticos.
More Papers Like This
Insights into the degradation mechanism of PET and PP under marine conditions using FTIR
AI summary Read the abstract
Researchers investigated the natural degradation of polypropylene and polyethylene terephthalate plastics under real marine conditions using FTIR spectroscopy, providing insights into how these common plastics break down in ocean environments.
FTIR and SEM Study on the Degradation of Microplastics
AI summary Read the abstract
Laboratory experiments using FTIR and SEM analysis showed that temperature, humidity, and UV light exposure all accelerate the surface degradation of microplastics, causing fragmentation into smaller particles and chemical changes to polymer structure. Understanding these degradation pathways matters because smaller plastic fragments and altered surface chemistry affect how microplastics interact with biological tissues and accumulate toxic compounds.
Degradation of food-contact plastics in use: Effect of temperature and chemical composition
AI summary Read the abstract
Researchers examined how common food-contact plastics (polypropylene, polyethylene, PET, and polycarbonate) degrade under conditions that mimic everyday use, including varying temperatures and chemical environments. The study found that elevated temperatures promoted oxidation and hydrolysis of these plastics, while both acidic and alkaline solutions enhanced surface degradation, potentially increasing microplastic release into food and beverages.
Microplastic Release from Plastic Bottles - Comparison of Two Analytical Methodologies (SEM-EDX and μ-FTIR)
AI summary Read the abstract
Researchers compared two analytical methods for measuring microplastics released from plastic water bottles, finding that both scanning electron microscopy and infrared spectroscopy can detect these particles but differ in the types of information they provide. Their findings confirm that plastic bottles are a direct source of microplastic exposure through drinking water.
Preliminary observation of bacterial biofilm communities on plastic litters and their surface degradation in two coastal areas of Tuticorin, India
AI summary Read the abstract
Researchers collected biofilm-coated plastic litter (covers, films, and ropes) from two coastal sites in Tuticorin, India and used FTIR-ATR spectroscopy to identify polyethylene, polypropylene, polystyrene, and polyamide polymers, finding higher biofilm concentrations at the more polluted Inigonagar site alongside evidence of surface degradation.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.