Poly(methyl methacrylate/methacrylic acid) [75:25] is an acid-functional acrylic copolymer composed of methyl methacrylate and methacrylic acid units. The 75:25 composition provides a PMMA-based polymer backbone with carboxylic acid functionality that can influence polarity, adhesion, wetting, swelling behavior, and pH-dependent response in formulation or research use.
Related names: Poly(methyl methacrylate-co-methacrylic acid), PMMA/methacrylic acid copolymer, methyl methacrylate/methacrylic acid copolymer, and methacrylic acid-methyl methacrylate copolymer.
This copolymer has an approximate molecular weight of 1.2 million and is soluble in ethyl cellosolve acetate and 9:1 IPA-water. It is used in research and formulation work involving biomedical and dental materials, coatings and adhesives, and pH-responsive drug delivery or hydrogel systems.
Key Properties
- Copolymer of methyl methacrylate and methacrylic acid
- 75:25 methyl methacrylate/methacrylic acid composition
- Product Number: 08208
- CAS Number: 25086-15-1
- Linear Formula: [-CH2C(CH3)(CO2CH3)-]x[-CH2C(CH3)(CO2H)-]y
- Approximate molecular weight: 1.2 million
- Soluble in ethyl cellosolve acetate and 9:1 IPA-water
- Contains carboxylic acid functionality
Applications
Biomedical & Dental Materials
Poly(methyl methacrylate/methacrylic acid) [75:25] is used in research and formulation work involving bone cements, bioadhesives, and dental materials where acrylic polymer character and carboxylic acid functionality are relevant.
Coatings & Adhesives
The copolymer may be used in specialty coatings, films, primers, and adhesive formulations where acid functionality can support adhesion, wetting, surface interaction, water response, or formulation tuning.
Drug Delivery & Hydrogels
The methacrylic acid units introduce ionizable carboxylic acid groups, making this material relevant to hydrogel research and pH-responsive or controlled-release formulation studies.
Solubility & Compatibility Considerations
- Soluble in ethyl cellosolve acetate and 9:1 IPA-water
- Solubility and viscosity may vary with concentration, solvent blend, pH, and ionic strength
- Carboxylic acid functionality may influence adhesion, swelling, wetting, and compatibility
- Compatibility should be confirmed with substrates, additives, fillers, active ingredients, and other formulation components before scale-up
Final performance depends on polymer concentration, solvent system, substrate chemistry, drying conditions, pH, ionic environment, and the intended formulation or research use.
Application Tips
- Evaluate solvent choice and polymer concentration in small-scale trials
- Add gradually with appropriate agitation to support uniform dissolution or dispersion
- Screen pH and ionic strength when evaluating pH-dependent behavior
- Confirm compatibility with all formulation components before production or application development use
Handling & Storage
- Store at room temperature
- Exercise normal care when handling
- Keep container tightly closed when not in use
- Use standard laboratory handling practices and appropriate personal protective equipment
- Follow the product SDS for complete handling, storage, cleanup, and disposal guidance
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FAQ
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1. What is Poly(methyl methacrylate/methacrylic acid) [75:25]?
It is an acrylic copolymer made from methyl methacrylate and methacrylic acid units. The methyl methacrylate portion provides PMMA-based polymer character, while the methacrylic acid portion introduces carboxylic acid functionality.
2. How does this copolymer differ from standard PMMA?
Standard PMMA is based on methyl methacrylate. This copolymer also contains methacrylic acid units, which add acid functionality and can influence polarity, wetting, adhesion, swelling behavior, and pH-dependent response.
3. What applications is this material used for?
It is used in research and formulation work involving biomedical and dental materials, coatings and adhesives, and drug delivery or hydrogel systems where pH-responsive acrylic polymer behavior is relevant.
4. What solvents can be used with this copolymer?
This copolymer is soluble in ethyl cellosolve acetate and 9:1 IPA-water. Users should confirm solubility under the exact concentration, pH, and processing conditions required for their application.
5. What should be reviewed before use?
Review the product specification and Safety Data Sheet before use. Users should confirm compatibility, handling requirements, and suitability for the intended research or formulation workflow.
Safety & Documentation
Review the product specification and Safety Data Sheet before use. Handle with appropriate laboratory precautions, personal protective equipment, and ventilation. Follow SDS guidance for storage, cleanup, and disposal.
