MMA {Methyl methacrylate} as Crosslinking Monomer for Gel Polymer Electrolyte, 100 g/bottle, CGPEMMMA

Using Methyl Methacrylate (MMA) monomer to formulate Gel Polymer Electrolytes (GPEs) is one of the most effective paths toward achieving seamless interfacial contact in next-generation solid-state or quasi-solid-state systems. By injecting a low-viscosity liquid precursor (MMA monomer + liquid electrolyte + initiator) directly into the cell and polymerizing it in situ, you effectively eliminate the high interfacial resistance that usually plagues pre-cast ex-situ membranes.  

In-Situ Polymerization Mechanism: The typical synthesis relies on thermal- or UV-initiated free-radical polymerization. The liquid precursor thoroughly wets the porous separator and penetrates the tortuous porosity of both the cathode and anode before curing. (1) Precursor Feed: MMA monomer, a lithium or sodium salt (e.g., LiFSI, NaFSI, LiPF6), a plasticizing organic solvent/ionic liquid, and a radical initiator like AIBN or V-65. (2) Reaction: Upon heating (typically 60–70°C) or UV exposure, the vinyl groups (C=C) in the MMA monomers undergo chain-growth polymerization to yield linear or highly entangled Polymethyl Methacrylate (PMMA) chains trapping the liquid phase. 

The core advantages of MMA-based GPEs are: (1) Carbonyl Coordination: The strong polar carbonyl groups (C=O) and ester groups (-OCH3) along the PMMA backbone interact strongly with the organic solvents, ensuring an exceptionally high electrolyte uptake and low solvent leakage. (2) Salt Dissociation: These oxygen-rich groups help coordinate with the metal cations (Li+ or Na+), facilitating the dissociation of ion pairs and improving both ionic conductivity (often reaching 10^{-3} S cm-1 at room temperature) and the cation transference number. (3) Interfacial Super-Wetting: Because it polymerizes directly inside the active layers, the resulting gel offers an uninterrupted path for ion transport, drastically cutting down interfacial resistance. (4) Radical Resistance: PMMA exhibits unique chemical resilience against nucleophilic attack from intermediate species (such as superoxide radicals in Li-O2 chemistries), making it highly stable compared to conventional polyethers.

Part Number	CGPEMMMA (C-GPE-M-MMA)
CAS	80-62-6
Chemical Formula	(H2C=CHCO2CH2)4C
Molecular Weight	100.12 g/mol
Density	0.936 g/mL at 25 °C (lit.)
Boling Point	100 °C (lit.)
Package Size	100 g/bottle

Notes: Please try to store the MMA monomer in a dry place. 

References: 

1. K. Gao, et al. PE-g-MMA polymer electrolyte membrane for lithium polymer battery, Electrochimica Acta, 2006, 52, 443-449
2. W. Min, et al. Mastering the Copolymerization Behavior of Ethyl Cyanoacrylate as Gel Polymer Electrolyte for Lithium-metal Battery Application, Angew Chem Int Ed, 2025, 64, e202422510