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Master's Dissertation
DOI
https://doi.org/10.11606/D.75.2013.tde-28112013-100100
Document
Author
Full name
Deyber Arley Vargas Medina
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2013
Supervisor
Committee
Cavalheiro, Eder Tadeu Gomes (President)
Macedo, Rui Oliveira
Venâncio, Tiago
Title in Portuguese
Estudo do polimorfismo dos edulcorantes artificiais sacarina, sacarina sódica, ciclamato de sódio e acesulfame-K
Keywords in Portuguese
comportamento térmico
edulcorante
polimorfismo
Abstract in Portuguese
O polimorfismo nos edulcorantes artificiais sacarina, sacarina sódica, ciclamato de sódio e acesulfame-K foi estudado a partir da obtenção de cristais mediante evaporação lenta de solvente, em diferentes temperaturas e sistemas solventes. As formas sólidas obtidas foram caracterizadas mediante o emprego de técnicas temoanalíticas e de difração de raios X. Estabeleceu-se a existência de três hábitos cristalinos isomórficos e uma forma semicristalina de sacarina, três formas pseudopolimórficas de sacarina sódica, duas formas pseudopolimórficas de ciclamato de sódio e duas formas polimórficas e uma amorfa de acesulfame-K.
Title in English
Study of polymorphism in artificial sweeteners saccharin, sodium saccharin, sodium cyclamte and acesulfame-K
Keywords in English
polymorphism
sweetener
thermal behavior
Abstract in English
The polymorphism in the artificial sweeteners saccharin, sodium saccharin, sodium cyclamate and acesulfame-K was studied from crystals obtained by slow evaporation of solvent at different temperatures. The solid forms obtained were characterized by thermoanalytical techniques and X-ray diffraction. It was established the existence of three isomorphic crystalline habits and one semicrystalline form of saccharin, three pseudopolymorphic forms of sodium saccharin, two pseudopolymorphic forms of sodium cyclamate and two polymorphic form and one amorphous acesulfame-K.
 
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Publishing Date
2013-11-29
 
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