Glass Transition Temperature of PLGA Particles and the Influence on Drug Delivery Applications

Over recent decades, poly(lactic-co-glycolic acid) (PLGA) based nano- and micro- drug delivery vehicles have been rapidly developed since PLGA was approved by the Food and Drug Administration (FDA). Common factors that influence PLGA particle properties have been extensively studied by researchers,...

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Bibliographic Details
Published in:Polymers 2022-02, Vol.14 (5), p.993
Main Authors: Liu, Guangliang, McEnnis, Kathleen
Format: Article
Language:English
Subjects:
Cancer therapies
Controlled release
Drug delivery systems
Glass transition temperature
Glycolic acid
Manufacturing
Molecular weight
Nanoparticles
Polydispersity
Polymers
Review
Temperature
Thin films
Toxicity
Zeta potential
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Summary:Over recent decades, poly(lactic-co-glycolic acid) (PLGA) based nano- and micro- drug delivery vehicles have been rapidly developed since PLGA was approved by the Food and Drug Administration (FDA). Common factors that influence PLGA particle properties have been extensively studied by researchers, such as particle size, polydispersity index (PDI), surface morphology, zeta potential, and drug loading efficiency. These properties have all been found to be key factors for determining the drug release kinetics of the drug delivery particles. For drug delivery applications the drug release behavior is a critical property, and PLGA drug delivery systems are still plagued with the issue of burst release when a large portion of the drug is suddenly released from the particle rather than the controlled release the particles are designed for. Other properties of the particles can play a role in the drug release behavior, such as the glass transition temperature ( ). The , however, is an underreported property of current PLGA based drug delivery systems. This review summarizes the basic knowledge of the glass transition temperature in PLGA particles, the factors that influence the , the effect of on drug release behavior, and presents the recent awareness of the influence of on drug delivery applications.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym14050993