Thermal degradation mechanism of polycarbonate/organically modified montmorillonite nanocomposites

Abstract

There were contradictory results about the effect of clay on polycarbonate (PC) thermal stability in previous reported papers. For ascertainment of the actual role of clay, PC nanocomposites were prepared by direct melt-mixing PC with hexadecyl trimethyl ammonium chloride modified montmorillonite (OMT). The results of X-ray diffractometry, transmission electron microscopy, and high-resolution electron microscopy experiments present the formation of uniformly intercalated structure. Thermogravimetric analyses show the onset decomposition temperature of PC/OMT nanocomposites is earlier 65 C than neat PC. The mechanism of PC thermal decomposition effected by OMT was discussed in detail. It reveals that OMT can catalyze thermal degradation of PC macromolecular chains and decrease thermal stability of the nanocomposites.

Palmitoylated cellulose nanocrystal/polycarbonate composite with high mechanical performance and good transparency

“…1 Polycarbonate (PC), one of the high-performance engineering plastics, has lots of good properties, such as impact resistance, heat resistance, its dimensional stability, and its optical transparency. 2,3 To further optimize its mechanical properties for its highperformance application, many nanofillers, such as basalt, graphene oxide, and multiwalled carbon nanotube had been used to reinforce the PC composites. [3][4][5] However, all these fillers reduce the transmittance of the PC, limiting its applications in the fields, which require both high optical and mechanical performances, such as an alternative to aviation and automotive window glass.…”

“…An approach to weight reduction is to replace heavier metal and glass vehicle components with plastics or polymer‐based materials, such as composites 1 . Polycarbonate (PC), one of the high‐performance engineering plastics, has lots of good properties, such as impact resistance, heat resistance, its dimensional stability, and its optical transparency 2,3 . To further optimize its mechanical properties for its high‐performance application, many nanofillers, such as basalt, graphene oxide, and multiwalled carbon nanotube had been used to reinforce the PC composites 3–5 .…”

Evaluation of the Mechanical Behavior of Bisphenol-A Polycarbonate after Thermal Degradation

“…In the last 20 th century, the need for materials to supply the lack of natural resources, synthetic products such as polymers based on petroleum derivatives have been developed [1][2]. Actually, the production of synthetic polymeric materials began to be dominated from the end of nineteenth century, when modified polymers were created from natural macromolecules.…”

“…Actually, the production of synthetic polymeric materials began to be dominated from the end of nineteenth century, when modified polymers were created from natural macromolecules. In the 20 th century, through polymerization studies, the synthesis of polymers was started from basic units of repetition called mere [2][3].…”

Multiple crosslinking bionanocomposites reinforced with mussel‐inspired poly(dopamine) surface modified nanoclay: Construction, properties, and characterization

“…Layered silicates have several distinct advantages, such as low cost, relative abundance, and high surface area to volume ratio . For instance, the incorporation of lamellar montmorillonite (MMT) structure has been proven an effective approach for improving the performance of nanocomposites . Similar to most other nanofillers, the enhanced mechanical and barrier properties of SPI/MMT nanocomposites are highly dependent on the dispersion states of the MMT sheets and interfacial interactions between MMT and SPI .…”