What Is Poly(glycidyl methacrylate) (PGMA)?

Poly(glycidyl methacrylate), abbreviated as PGMA, is a functional epoxy-containing acrylic polymer resin. It is synthesized by free-radical polymerization of glycidyl methacrylate (GMA) monomers.

Unlike ordinary acrylic resins, PGMA carries reactive glycidyl epoxy side groups on its molecular chain. As a high-molecular polymer, PGMA exists as free-flowing white powder under normal conditions.Weicheng Advanced Material (Shandong) Co., Ltd manufactures high-performance PGMA using self-produced 99.9% purity GMA monomer, supporting customized molecular weight including Mw 40,000–80,000 grade for global industrial customers.

Chemical Structure Feature

PGMA backbone is the polymer chain of methacrylate. The pendant oxirane (epoxy) groups are the core functional sites. These epoxy groups can undergo chemical crosslinking reaction with carboxyl (-COOH), hydroxyl (-OH), and amine (-NH₂) groups at moderate temperatures. This unique reactivity makes PGMA an indispensable functional modifier in modern polymer industry.

Key Properties of Poly(glycidyl methacrylate) (PGMA)

1. Controllable molecular weight & narrow molecular distributionWe provide PGMA with customizable weight average molecular weight (Mw 40,000–80,000). Low PDI ensures consistent reaction performance batch by batch.

2. High epoxy reaction activitySide-chain epoxy groups have stable and high reactivity, excellent chain extension effect for polymer modification.

3. Low chroma and low yellowing performanceLow hydrolyzable chlorine and low residual monomer, suitable for transparent coating and high-end electronic material systems.

4. Good compatibilityPerfect miscibility with PLA, PBAT, polyester resin, polyurethane and other polymer materials without phase separation.

5. Good thermal stabilityThermal decomposition temperature above 250°C, stable during plastic extrusion and coating curing processes.

6. Solubility characteristicsSoluble in THF, acetone, DMF and MEK; insoluble in water and aliphatic solvents.

Main Industrial Applications of PGMA

1. Chain Extender for PLA / PBAT Biodegradable Plastics

This is the largest application field of high molecular weight PGMA. PGMA reacts with terminal carboxyl and hydroxyl groups of biodegradable plastic chains, increasing molecular weight, improving tensile strength, toughness and heat resistance. It effectively solves the brittleness problem of biodegradable materials.

2. Functional Additive for PCB UV Solder Resist Ink

Low-chroma electronic-grade PGMA enhances curing density, substrate adhesion, insulation and solvent resistance of PCB solder resist ink, meeting precision circuit board production requirements.

3. Powder Coatings & UV Curable Coatings

PGMA acts as crosslinking modifier to improve coating hardness, weather resistance, abrasion resistance and surface gloss for metal and plastic coatings.

4. Polymer Alloy Compatibilizer

Used for blending modification of different engineering plastics, improving interfacial compatibility between immiscible polymers.

5. Additive for Adhesives & Sealants

Enhance bonding strength, heat resistance and aging resistance of industrial adhesives.

Why Choose Weicheng Advanced Material as Your PGMA Manufacturer in China

✅ Complete industrial chain: Self-produced high purity GMA monomer (99.9%, 6000 tons annual capacity)

✅ Customized PGMA specifications (Mw 40000–80000 available)

✅ Low yellowing, low residual monomer, stable batch quality

✅ ISO certified factory, EU REACH compliant

✅ Complete documents: COA, TDS, MSDS provided for each batch

✅ Professional technical support for formulation debugging

If you are searching for reliable Poly(glycidyl methacrylate) (PGMA) supplier, welcome to contact Weicheng Advanced Material (Shandong) Co., Ltd for samples and quotation.