Effect of filler type on properties of PBAT/organoclay nanocomposites
| Autor: | Eduardo L. Canedo, Dayanne Diniz de Souza Morais, Laura H. Carvalho, Tatiara G. Almeida, Fernão D. Magalhães, Rui Miranda Guedes, Tiago Tibério dos Santos |
|---|---|
| Přispěvatelé: | Faculdade de Engenharia |
| Rok vydání: | 2019 |
| Předmět: |
Nanocomposite
Materials science Polymers and Plastics 02 engineering and technology General Chemistry Dynamic mechanical analysis 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Thermogravimetry chemistry.chemical_compound Differential scanning calorimetry chemistry Masterbatch Materials Chemistry Organoclay Thermal stability Composite material 0210 nano-technology Glass transition |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 1436-2449 0170-0839 |
| Popis: | The goal of this study is to evaluate the effect of different organoclays on the properties of poly(butylene adipate-co-terephthalate) (PBAT)/organoclay systems. PBAT/organoclay nanocomposites containing 2.5, 5.0 and 7.5% of three different commercial organically modified clays (Cloisite(R) C10A, C20A and C30B) were prepared as a masterbatch in a laboratory internal mixer, let down to the appropriate concentration in a co-rotating twin-screw extruder, and test specimens were injection molded. Nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermogravimetry (TGA) and dynamic mechanical analysis (DMA) as a function of clay identity and content. XRD results showed a significant increase in the interlayer spacing of the clay, suggesting that intercalated structures were obtained with all systems investigated, as confirmed by TEM. Organoclay incorporation into PBAT resulted in lower melt crystallization temperatures compared with the neat polymer, particularly in PBAT/C30B nanocomposites, slightly improved thermal stability, increased stiffness and no changes in the glass transition temperature. Compounding PBAT with up to 7.5% of C10A, C20A or C30B organoclays is an option to improve the performance of PBAT. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink