Layer-by-Layer technique employed to construct multitask interfaces in polymer composites
AUTOR(ES)
Vitorino, Luísa Sá, Oréfice, Rodrigo Lambert
FONTE
Polímeros
DATA DE PUBLICAÇÃO
2017-12
RESUMO
Abstract The properties of glass fiber-reinforced polymer composites are closely related to the fiber-matrix interface. Interfacial treatments to improve mechanical properties are usually limited to enhance interfacial adhesion. In this work, Layer-by-Layer (LbL) technique was introduced to build a novel interface in polymer composites. Different numbers of bilayers of poly(diallyldimethylammonium chloride) and poly(sodium 4-styrenesulfonate) with carbon nanotubes were deposited through LbL on the surface of woven glass fibers (GFs). Polypropylene composites containing the modified GFs were prepared by compression molding. Thermogravimetric analysis, scanning electron microscopy and Raman spectroscopy proved that multilayers of polymers with carbon nanotubes could be deposited on GFs surface. Mechanical tests on composites with modified GFs revealed an increase in Flexural Modulus and toughness. The overall results attested that the LbL technique can be used to design interfaces with different compositions to perform diverse tasks, such as to improve the stiffness of composites and to encapsulate active nanocomponents.
Documentos Relacionados
- Quantitative Layer-By-Layer Perimetry: An Extended Analysis
- Processing of nanomaterials in Layer-by-Layer films: Potential applications in (bio)sensing and energy storage
- Layer-by-layer deposition of oppositely charged polyelectrolytes on the surface of condensed DNA particles.
- Layer-by-Layer assembly of carbon nanotubes applied in sensing
- Study of photoinduced birefrigence, in layer-by-layer films containing azopolymer and azodye