2009
DOI: 10.1016/j.ijpharm.2008.09.054
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Thermal behavior and stability of biodegradable spray-dried microparticles containing triamcinolone

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Cited by 61 publications
(27 citation statements)
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“…The appearance of the ␤ form in our 48.5% progesterone-loaded microspheres resembles those previous trends. Our results also substantiate that polymorphic transition of a drug substance is dependent upon its concen- tration in a vehicle -polymorphic transition does not occur readily at a low drug concentration, or vice versa (Silva-Júnior et al, 2009). Shown in Fig.…”
Section: Resultssupporting
confidence: 84%
“…The appearance of the ␤ form in our 48.5% progesterone-loaded microspheres resembles those previous trends. Our results also substantiate that polymorphic transition of a drug substance is dependent upon its concen- tration in a vehicle -polymorphic transition does not occur readily at a low drug concentration, or vice versa (Silva-Júnior et al, 2009). Shown in Fig.…”
Section: Resultssupporting
confidence: 84%
“…Very lower mean diameter (from 3.2 to 5.5 lm) observed for Extracts-MP than the corresponding Extracts-M (22.9-59.9 lm) as well as monomodal dimensional distribution, suggested that the presence of pectin affects the particle size significantly. This result is particularly fulfilling considering that particle shape and reduced mean size generally improve the flowability of powders and monomodal dimensional distribution is a technological property of powders able to affect the dissolution rate (Da Silva-Junior et al, 2009).…”
Section: Dimensional Analysismentioning
confidence: 83%
“…Comparando-se as curvas obtidas no presente estudo (Figura 3), com as curvas DSC, TG/DTG para o copolímero D,L-PLGA (50/50), publicadas por Silva Junior et al [22] , percebe-se o mesmo comportamento, qual seja, a transição vítrea e a degradação desses polímeros. A única diferença foi que tanto a transição vítrea quanto a degradação ocorreram em temperaturas menores do que as apresentadas na literatura (46-52 °C e 309-381 °C, respectivamente).…”
Section: Resultsunclassified
“…uma vez que a razão de aquecimento nos ensaios de TG (10 °C/ min) foi maior do que a utilizada nos ensaios de DSC (5 °C/min -2ª corrida). Em comparação com os resultados de termogravimetria publicados na literatura [22] , os polímeros sintetizados neste estudo apresentaram comportamento de perda de massa semelhante, porém menores temperaturas de início de degradação térmica, da mesma forma quando se comparou com os resultados de DSC.…”
Section: Resultsunclassified