Thermal analysis

Wendlandt, W.W.

doi:10.1021/ac00269a020

Cited by 40 publications

(43 citation statements)

References 146 publications

(153 reference statements)

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“…Differential Scanning Calorimetry is an important study of a material thermal behavior that identifies mass loss, reduction reactions and desorption by the endothermic peaks and crystallization, polymerization reactions and oxidation by the exothermic peaks 32 . The results of the DSC of the scaffolds with and without glycerol are analyzed in Figure 3.…”

Section: Dsc/tgamentioning

confidence: 99%

Fibers Obtained from Alginate, Chitosan and Hybrid Used in the Development of Scaffolds

et al. 2017

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The main aim of this study was to develop scaffolds based on alginate, chitosan and hybrid fibers with and without glycerol. The scaffolds developed underwent assessments for tensile property, swelling ratio and weight loss, cellular viability, degradation and biomineralization, as well as DSC/TGA thermal analysis. Tenacity values showed that use of glycerol and the interaction between alginate and chitosan as a hybrid fiber were associated with increasing tenacity values. In the swelling and weight loss study, the scaffolds containing glycerol presented lower weight loss and higher water absorption values in all scaffolds, compared to scaffolds without glycerol, indicating that glycerol acted as a stabilizer. None of the alginate, chitosan and hybrid scaffolds, with or without glycerol, decreased cell viability. On the third day of the biomineralization assay, chitosan without glycerol indicated the presence of apatite crystals. The degradation study showed that glycerol may have acted as a stabilizer.

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Section: Dsc/tgamentioning

confidence: 99%

Fibers Obtained from Alginate, Chitosan and Hybrid Used in the Development of Scaffolds

et al. 2017

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“…The decomposition temperatures of all three pectin-cross-linked chitosan scaffolds fell between those of chitosan (306°C) and pectin (240°C). The higher the amount of pectin in the scaffold there was, the closer its decomposition temperature was to that of pectin (Wendlandt, 1986). The absence of the event typical of chitosan (300°C) after pectin addition indicated complexation between the two polymers (Ghaffari et al, 2007).…”

Section: Tgamentioning

confidence: 99%

Controlled release of pentoxifylline from porous chitosan-pectin scaffolds

Lin¹,

Yeh²

2010

Drug Delivery

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“…Com isso, os seis prótons que estavam ligados aos carbonos migram para os sítios livres dos oxigênios, liberando uma possível molécula de água de oclusão, a qual fica retida nas cavidades microscópicas distribuídas irregularmente nos sólidos cristalinos [28], e formando quatro grupamentos de ácido ortofosfórico, H 3 PO 4 , e dois As curvas TG/DTG do complexo ácido fítico-i(II) estão representadas na Figura 7, onde se pode observar a perda de massa em três etapas principais, as quais estão representadas na Tabela 3. Da temperatura ambiente a 167ºC, verificou-se a primeira perda de massa de 4,53%, que sugere três moléculas de água de hidratação.…”

Section: -Análise Térmica -Curva Tgunclassified