{"id":494,"date":"2025-06-04T02:02:22","date_gmt":"2025-06-04T02:02:22","guid":{"rendered":"https:\/\/microfluidics.creative-biolabs.com\/blog\/?p=494"},"modified":"2025-06-04T02:15:34","modified_gmt":"2025-06-04T02:15:34","slug":"microfluidic-assisted-synthesis-of-plga-drug-delivery-systems","status":"publish","type":"post","link":"https:\/\/microfluidics.creative-biolabs.com\/blog\/microfluidic-assisted-synthesis-of-plga-drug-delivery-systems\/","title":{"rendered":"Microfluidic-Assisted Synthesis of PLGA Drug Delivery Systems"},"content":{"rendered":"<p><span style=\"font-size: 15px;\">Poly (lactic-co-glycolic acid) (PLGA) has become a front-runner in the development of modern drug delivery systems (DDSs) due to its remarkable biocompatibility, biodegradability, and FDA approval for human use. Despite its popularity, conventional bulk synthesis techniques often suffer from limitations such as low drug loading efficiency, broad particle size distribution, and inconsistent batch-to-batch quality. Microfluidic technology has emerged as a transformative tool to overcome these challenges, enabling precise, scalable, and reproducible synthesis of PLGA-based nanocarriers.<\/span><\/p>\n<p><span style=\"font-size: 15px;\"><strong>Why PLGA?<\/strong><\/span><\/p>\n<p><span style=\"font-size: 15px;\">PLGA, a copolymer of lactic acid and glycolic acid, degrades into non-toxic metabolites and allows tunable release profiles by varying the monomer ratio. These characteristics make it highly suitable for encapsulating a wide range of therapeutic agents, including small molecules, proteins, peptides, and nucleic acids. However, to harness its full potential, formulation precision is critical\u2014this is where microfluidics steps in.<\/span><\/p>\n<p><span style=\"font-size: 15px;\"><strong>What Is Microfluidics?<\/strong><\/span><\/p>\n<p><span style=\"font-size: 15px;\">Microfluidics is the science and technology of manipulating tiny amounts of fluids, typically in the microliter or nanoliter range, within micro-scale channels fabricated from materials such as PDMS (polydimethylsiloxane), polyimide, aluminum, or glass capillaries.<\/span><\/p>\n<p><span style=\"font-size: 15px;\">These microchannels allow unparalleled control over mass and heat transfer, reaction kinetics, and mixing phenomena. Compared to conventional synthesis methods, microfluidic-assisted formulation excels in:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 15px;\">Precise control over particle size and distribution<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Reduced reagent consumption<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Minimized batch-to-batch variability<\/span><\/li>\n<li><span style=\"font-size: 15px;\">High reproducibility and scalability<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Integration with downstream analytical systems<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 15px;\"><strong>Microfluidic Modalities for PLGA DDS Synthesis<\/strong><\/span><\/p>\n<p><span style=\"font-size: 15px;\">Microfluidic systems for nanoparticle fabrication can be broadly classified into two modes:<\/span><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-495 aligncenter\" src=\"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-content\/uploads\/2025\/06\/2025060403.png\" alt=\"\" width=\"769\" height=\"509\" srcset=\"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-content\/uploads\/2025\/06\/2025060403.png 769w, https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-content\/uploads\/2025\/06\/2025060403-300x199.png 300w\" sizes=\"(max-width: 769px) 100vw, 769px\" \/><\/p>\n<p style=\"text-align: center;\"><span style=\"font-size: 15px;\">Fig. 1 Microfluidic systems for PLGA drug delivery systems.<sup>1,2<\/sup><\/span><\/p>\n<ol>\n<li><span style=\"font-size: 15px;\">Droplet-Based Microfluidics<\/span><\/li>\n<\/ol>\n<p><span style=\"font-size: 15px;\">Droplet microfluidics involves the formation of discrete liquid droplets via immiscible fluids. These droplets serve as tiny reaction compartments for the formation of emulsions, microparticles, and nanoparticles (NPs).<\/span><\/p>\n<p><span style=\"font-size: 15px;\">Key parameters that govern droplet formation include:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 15px;\">Channel geometry: Parallel, cross-flow, and flow-focusing configurations determine droplet size and generation frequency.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Fluid properties: Viscosity, interfacial tension, and the presence of surfactants influence the breakup of the dispersed phase.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Flow rates: The flow rate ratio (FRR) between the dispersed and continuous phases shifts the droplet formation mode between dripping, jetting, and squeezing regimes.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 15px;\">In particular:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 15px;\">Dripping: Occurs at low flow rates; generates monodisperse droplets with tight size distribution.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Jetting: Higher flow velocities yield polydisperse droplets with higher surface area-to-volume ratios.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Squeezing: Characterized by droplet deformation and breakup due to pressure buildup in confined channels.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 15px;\">Both active methods (involving external forces like magnetic or electric fields) and passive methods (relying on fluid flow and geometry) are used for droplet control and mixing.<\/span><\/p>\n<ol start=\"2\">\n<li><span style=\"font-size: 15px;\">Continuous-Flow Microfluidics<\/span><\/li>\n<\/ol>\n<p><span style=\"font-size: 15px;\">In contrast to droplet systems, continuous-flow microfluidics involves the co-flow of miscible or immiscible fluids along microchannels without phase breakup. This configuration allows rapid and uniform mixing, making it ideal for nanoprecipitation and emulsification-based synthesis.<\/span><\/p>\n<p><span style=\"font-size: 15px;\">Advantages of continuous flow systems include:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 15px;\">Narrower particle size distributions<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Efficient heat and mass transfer<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Minimized wall fouling and clogging<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Scalability through parallelization<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 15px;\">Microfluidic mixing enables the fast and controlled precipitation of PLGA particles, often leading to higher encapsulation efficiency and reduced burst release.<\/span><\/p>\n<p><span style=\"font-size: 15px;\"><strong>Microfluidic Devices for PLGA-Based DDS Fabrication<\/strong><\/span><\/p>\n<p><span style=\"font-size: 15px;\">Over the past two decades, a wide variety of microfluidic devices have been employed to generate PLGA nanoparticles (NPs), microparticles (MPs), and even microfibers:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 15px;\">PDMS: Chip-based NP synthesis, flexible design, ease of fabrication.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Glass capillaries: Emulsion-based MP production, optical transparency, chemical resistance.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Phenolic resin: Drug carrier platforms, high stability, and pressure tolerance.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Aluminum: High-throughput microreactors, heat transfer efficiency.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Silicon wafers: Integrated Lab-on-a-Chip, CMOS-compatible, miniaturization potential.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 15px;\">While PLGA MPs and NPs have shown excellent performance in encapsulating hydrophilic and hydrophobic drugs, microfibers fabricated by microfluidics are less common in DDS due to drawbacks such as voids and undesirable hydrogel-like properties post-curing.<\/span><\/p>\n<p><span style=\"font-size: 15px;\"><strong>Challenges &amp; Opportunities<\/strong><\/span><\/p>\n<p><span style=\"font-size: 15px;\">Despite its advantages, microfluidic-assisted PLGA nanoparticle synthesis still faces several hurdles:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 15px;\">Low throughput: Single-channel designs limit scalability for industrial use.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Device cost: Microfabrication and maintenance expenses may be high.<\/span><\/li>\n<li><span style=\"font-size: 15px;\">Process optimization: Different payloads and release requirements necessitate case-by-case parameter tuning.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 15px;\">However, emerging solutions like multi-channel parallelization, automated parameter screening, and AI-driven process control are paving the way for industrial-scale adoption.<\/span><\/p>\n<p><span style=\"font-size: 15px;\"><strong>Creative Biolabs&#8217; Microfluidic Platform: Your Partner in DDS Innovation<\/strong><\/span><\/p>\n<p><span style=\"font-size: 15px;\">At Creative Biolabs, we combine microfluidic engineering with pharmaceutical expertise to deliver customized PLGA-based drug delivery solutions. Our services include:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 15px;\"><a href=\"https:\/\/microfluidics.creative-biolabs.com\/microfluidic-services-for-drug-delivery.htm\">Microfluidic Development Services for Drug Delivery<\/a><\/span><\/li>\n<li><span style=\"font-size: 15px;\"><a href=\"https:\/\/microfluidics.creative-biolabs.com\/polymer-nanoparticle.htm\">Polymer Nanoparticle Synthesis Service<\/a><\/span><\/li>\n<li><span style=\"font-size: 15px;\"><a href=\"https:\/\/microfluidics.creative-biolabs.com\/polyacrylamide-particles.htm\">Polyacrylamide Particle Synthesis Service<\/a><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 15px;\">Creative Biolabs is known for its professionalism, scientific research, innovation, and excellent service in the laboratory. With microfluidics as the main core technology, the company continues to grow and develop. Among the focuses are precise analytical techniques and quality laboratory products and services.<\/span><\/p>\n<p><span style=\"font-size: 15px;\">References<\/span><\/p>\n<ol>\n<li><span style=\"font-size: 15px;\">Rezvantalab, Sima, and Mostafa Keshavarz Moraveji. &#8220;Microfluidic assisted synthesis of PLGA drug delivery systems.&#8221; <em>RSC advances<\/em>4 (2019): 2055-2072. <a href=\"https:\/\/doi.org\/10.1039\/C8RA08972H\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1039\/C8RA08972H<\/a><\/span><\/li>\n<li><span style=\"font-size: 15px;\">Distributed under Open Access license <a href=\"https:\/\/creativecommons.org\/licenses\/by\/3.0\/\" target=\"_blank\" rel=\"noopener\">CC BY 3.0<\/a>, without modification.<\/span><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Poly (lactic-co-glycolic acid) (PLGA) has become a front-runner in the development of modern drug delivery systems (DDSs) due to its remarkable biocompatibility, biodegradability, and FDA approval for human use. Despite its popularity,<a class=\"moretag\" href=\"https:\/\/microfluidics.creative-biolabs.com\/blog\/microfluidic-assisted-synthesis-of-plga-drug-delivery-systems\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":499,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/posts\/494"}],"collection":[{"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/comments?post=494"}],"version-history":[{"count":1,"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/posts\/494\/revisions"}],"predecessor-version":[{"id":496,"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/posts\/494\/revisions\/496"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/media\/499"}],"wp:attachment":[{"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/media?parent=494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/categories?post=494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microfluidics.creative-biolabs.com\/blog\/wp-json\/wp\/v2\/tags?post=494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}