Thermal characterization of modified phyllosilicates with aromatic heterocyclic amines

Morais, Cidoval; Filho, Edson Cavalcanti da Silva; Silva, Oberto G. da; Fonseca, Maria G.; Arakaki, Luiza N.H.; Espínola, José Geraldo de Paiva

doi:10.1007/s10973-006-7854-1

Cited by 5 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This research has been highlighted because of the improvement of the thermal, mechanical, and rheological properties, among others, of these materials after the incorporation of organic groups. Recently, various works have modified the surface of the clay with the incorporation of organic groups [5][6][7][8]. In addition to the different clays, other materials have also been modified for the same purpose, including the modification of chitosan [9,10], modification of babassu coconut mesocarp [11] and magadiite [12], both with ethylene sulfide.…”

Section: Introductionmentioning

confidence: 99%

Organofunctionalization of Natural Palygorskite with Ethylene Sulfide in the Absence of a Solvent

Silva

Oliveira

Batista

et al. 2016

MSF

View full text Add to dashboard Cite

The search for functional materials has increased daily in order to improve their functionality while maintaining a low cost. Among the materials of considerable interest are clays and within them is a particular clay known as palygorskite, which contains a hydrated silicate of aluminum and magnesium with a fibrous morphology. This work achieved the organofunctionalization of palygorskite with ethylene sulfide in the absence of a solvent. Through the elemental analysis of sulphur, the incorporation of 9.73 ± 0.36 mmol g-1 was identified. A significant decrease in the crystallographic planes (110) and (040) was identified in the XRD. The FTIR showed vibrations of stretching and deformation of the methylene groups in the region below 3000 and in 1421 cm-1, respectively. The deformation related to the C-S group in the region of 700 and 600 cm-1, and the surface area (BET) showed a significant reduction from 113 to 7 m2 g-1. Additionally, the SEM presented a loss of fibrous character.

show abstract