Morphology and Thermal Properties of Expanded Graphite (EG)/Poly(ethylene terephthalate) (PET) Nanocomposites
Journal Title: CHEMIK nauka-technika-rynek - Year 2012, Vol 66, Issue 1
Abstract
Nanocomposites based on poly(ethylene terephtalate) and expanded graphite (PET/EG) with 0.025-0.4wt.% nanofiller content were prepared by in situ condensation polymerization (polycondensation). Their morphology was determined (TEM, SEM), thermal stability by TGA (temperatures corresponding to: 2% (T-2%),10% (T-10%) and 50% (T-50%) weight loss, activation energy by Freeman-Carroll method (Ea), temperature of maximum mass loss rate of nanocomposites in air and in argon. Also the influence of graphene was assessed on the physical transition occurring in the PET (DSC). The results of PET/EG nanocomposites were compared with the unmodified PET. SEM images of nanocomposite exhibit a diphasic structure of PET / EG of clearly visible graphene platelets, and few agglomerates. The study of nanocomposites of PET / EG using TEM techniques confirmed the presence of grephene platelets size of about 1÷10 μm. This means, that in situ polymerization has been used to obtain exfoliated and relatively evenly spaced graphene plates (EG) in the PET matrix. In addition, it was demonstrated that the addition of nanofiller not significantly affect the physical transition temperature, as well as the degree of crystallinity of PET. Higher thermal stability and thermo-oxidative stability of the nanocomposites was observed resulting from participation of graphene nanoparticles.
Authors and Affiliations
Sandra Paszkiewicz, Zbigniew Rosłaniec, Anna Szymczyk, Zdenko Spitalsky, Jaroslav Mosnacek
Keywords
Related Articles
- EP ID EP124648
- DOI -
- Views 70
- Downloads 0
Charakterystyka surowców do produkcji świec i zniczy oraz ich wpływ na środowisko
Proces produkcji świec i zniczy nie jest skomplikowany. Jednak bardzo istotne są surowce, z jakich się je wytwarza. Wysokiej jakości granulat, odpowiednio dobrane knoty mogą się znacznie przyczynić do sukcesu w sprzedaży...
Tarnowskie Tworzywa Konstrukcyjne. Znaczenie tworzyw konstrukcyjnych dla Grupy Kapitałowej Azoty Tarnów
Przedstawiono strukturę, obszary działalności oraz ofertę tworzyw konstrukcyjnych Grupy Kapitałowej Azoty Tarnów: Tarnamid®, alphalon® - poliamid 6 (PA6), Tarnoform® – poliacetal (POM). Zaprezentowano historię rozwoju te...
Co-operation of liquid manure and the prp Fix preparation in shaping of plant crop volume and quality
Vegetative-field experiments were conducted from 2011 to 2013 at the Plant Variety Assessment Station in Szczecin Dąbie. The undertaken studies were targeted to determine reacting of the liquid manure with addition of...
Trehaloza – właściwości, biosynteza, zastosowanie
α,α-Trehaloza jest naturalnie występującym disacharydem, zbudowanym z dwóch cząsteczek glukozy połączonych wiązaniem α,α- 1,1’-O-glikozydowym. Znana jest głównie ze zdolności do stabilizacji białek w warunkach stresu...
Characteristics and nature usability of municipal sewage sludges in Dolnośląskie Voivodeship
The article sums up real results of studies on sewage sludges obtained in years 1998–2012 from over 20 sewage treatment plants in South-West Poland – which provides an outlook on the real situation in this economy sec...