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Description
Ethylene Glycol Dimethacrylate from TCI, catalogue code E0102, is a difunctional monomer built from an ethylene glycol core carrying a methacrylate group at each end, and it is supplied in stabilized form using hydroquinone (HQ). The material occupies an important position in polymer laboratories as a crosslinking agent, that is, the component that links individual polymer chains into a three-dimensional network. The presence of two reactive double bonds allows the formation of rigid, insoluble, solvent-resistant structures that cannot be achieved with monofunctional monomers alone. For this reason the compound is a routine ingredient in the synthesis of resins, hydrogels, and porous materials.
The properties that make it a widely preferred choice are its high free-radical reactivity combined with the ability to tune crosslink density simply by adjusting the proportion used in a formulation. The larger the share of this monomer, the more rigid the resulting network becomes and the lower its degree of swelling. As a liquid that is miscible with many acrylate and methacrylate monomers, it is easily formulated together with functional monomers and with either thermal initiators or photoinitiators. The added hydroquinone serves to inhibit premature polymerization, so that the material remains workable during storage and handling before it is deliberately cured.
In Indonesian laboratories this monomer is typically used in polymer chemistry and materials research groups, in university teaching laboratories running polymerization practicals, and in formulation work where crosslinked resins or gels are prepared on a bench scale. It is normally weighed or measured out as one component of a monomer mixture, combined with an initiator, and then cured thermally or by exposure to light, with the proportion chosen according to the network stiffness the work requires.
Laboratory Applications
- Crosslinked resin synthesis — the two reactive methacrylate ends tie growing chains together into a three-dimensional network, giving resins that are rigid, insoluble, and resistant to solvent attack.
- Hydrogel preparation — copolymerizing this difunctional monomer with hydrophilic functional monomers fixes the gel network in place, and the proportion used directly controls how far the gel swells.
- Porous material fabrication — because the crosslinker builds an insoluble network around a pore-forming phase, it is routinely used when permanently porous polymer structures are the target.
- Formulation with photoinitiators or thermal initiators — its high free-radical reactivity and liquid, miscible nature let it be blended into curable formulations that set on demand under heat or light.
- Crosslink density studies — varying only the proportion of this monomer in an otherwise fixed recipe gives a straightforward way to study how network stiffness and swelling behaviour change.
Specifications
- Brand: TCI, catalogue code E0102
- CAS number: 97-90-5
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Physical form: liquid, miscible with many acrylate and methacrylate monomers
- Stabilizer: supplied stabilized with hydroquinone (HQ) to inhibit premature polymerization
- Pack sizes: available in the standard TCI packaging options for this catalogue item; please confirm the size required when ordering
- Storage: keep the stabilized material in its original closed container, protected from heat and light
Handling and Storage
Store the container tightly closed in a cool, well-ventilated place away from heat sources, direct sunlight, and any source of ignition, since the material is a polymerizable liquid whose reaction is only held back by the hydroquinone stabilizer. Keep it in the original manufacturer container or in a compatible, clearly labelled closed vessel, and do not transfer it into containers that previously held initiators or peroxides. Handle in a fume hood, wear chemical-resistant gloves, safety goggles, and a laboratory coat, and avoid contact with skin and eyes as well as inhalation of vapour. Return the container promptly to storage after dispensing so that the stabilizer remains effective, and consult the manufacturer's safety data sheet before first use.
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