C.O.R.E.
Catalytic Opening & Recycling of Esters
PLA Depolymerization
report_problem Problem Statement
Polylactic acid (PLA) was promoted as the biodegradable solution to plastic pollution, but in practice, PLA only degrades in industrial composting facilities operating above 58C — conditions unavailable to 95% of the global population. PLA contaminates PET recycling streams (it's visually identical), fails to decompose in landfills, oceans, or home compost, and existing chemical recycling relies on tin catalysts (stannous octoate, Sn(Oct)₂) in the melt phase at 180–230°C — a toxic, heavy-metal, high-energy process that produces lactide for repolymerization and is regulated under REACH. There is no cheap, non-toxic, low-temperature chemical recycling route.
trending_up Market Size
$1.2B global PLA market (growing 18% CAGR, recycling infrastructure gap widening)
gavel Regulatory Drivers
EU Packaging and Packaging Waste Regulation (PPWR) mandates recycled content targets for plastic packaging. EU Circular Economy Action Plan prioritizes chemical recycling technologies. California SB 54 requires 65% reduction in single-use plastic waste by 2032. EPR schemes penalize non-recyclable plastics. EU REACH SVHC candidate list targets reproductive toxins including organotin compounds, pressuring the Sn(Oct)₂ incumbent. ISO 15270 (Plastics — Guidelines for the recovery and recycling of plastics waste).
corporate_fare Enterprise Interest
No enterprise interest recorded yet. Companies can indicate their volume and urgency to help guide research priorities.
flag Success Criteria
CAGE-catalyzed reaction (Run A) achieves methyl lactate yield >20% AND at least 3× the methanol-only background rate (Run B), measured by GC-MS. Run A must also exceed the citric-only (Run C) and histidine-only (Run D) controls, demonstrating that the combination is catalytically necessary. Reaction conditions must remain below 150°C in an alcohol solvent (methanol or ethanol), using only food-grade organic reagents — no heavy metals, no synthetic organocatalysts, no concentrated acids or bases. Secondary: demonstrate that the CORE system outperforms Zn(OAc)₂ on a cost-normalized basis (methyl lactate per dollar of catalyst).
precision_manufacturing Equipment Needed
Pressure-rated reaction vessels (Parr reactor, autoclave, or pressure tubes rated to 150C/20 bar for methanol service), oil bath or heating mantle with temperature controller, PLA pellets (commercial grade, known molecular weight), analytical balance (0.001g), vacuum filtration setup, GC-MS system for methyl lactate quantification (or institutional access / send-out), TLC silica plates and a methyl lactate reference standard for pre-screening, anhydrous methanol (99.8%+), food-grade citric acid, L-histidine, dry-chemical ABC fire extinguisher, face shield, nitrile gloves, thermometer, timer
menu_book Existing References
Reference list will be published with protocols.
Protected Research Content
This section contains detailed protocols, proposed mechanisms, experiment designs, and safety information.
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