Description

Poly(ε-Caprolactone-δ-Valerolactone) is a biodegradable, aliphatic polyester copolymer synthesized from ε-caprolactone and δ-valerolactone monomers. This engineered material offers a unique balance of mechanical properties, degradation rates, and biocompatibility, making it a versatile platform for advanced material science. It is primarily sought by manufacturers in the biomedical, pharmaceutical, and specialty plastics industries for applications requiring controlled degradation and tunable performance.

Application

• Biomedical Implants & Devices: As a key component in resorbable sutures, bone fixation devices, and tissue engineering scaffolds due to its biocompatibility and predictable degradation profile.
• Controlled Drug Delivery Systems: Used to formulate microspheres, nanoparticles, and implantable matrices for the sustained release of active pharmaceutical ingredients (APIs).
• Specialty Adhesives & Coatings: Serves as a base polymer for high-performance, biodegradable adhesives and protective coatings in niche industrial applications.
• 3D Printing Filaments: Engineered as a feedstock for fused deposition modeling (FDM) in prototyping and manufacturing of biodegradable parts.
• Environmental Plastics: Incorporated into compostable packaging films and agricultural mulches where controlled lifetime and breakdown are required.
• Polymer Modification: Acts as a modifier to enhance the flexibility, toughness, and degradation characteristics of other polymer blends.

Basic Information

Product Name	Poly(ε-Caprolactone-δ-Valerolactone)
CAS No.	29612-36-0
Molecular Formula	(C6H10O2·C5H8O2)n
Molecular Weight	Varies by grade and monomer ratio. Contact for details.
Synonyms	Poly(ε-caprolactone-co-δ-valerolactone); P(CL-co-VL); Polycaprolactone-valerolactone copolymer; Biodegradable polyester copolymer; Poly(3-oxopentamethylene-co-2-oxopentamethylene); Poly(1-oxo-1,6-hexamethylene-co-1-oxo-1,5-pentamethylene); CL/VL Copolymer
EINECS	Contact for details.

Quality Control

Our Poly(ε-Caprolactone-δ-Valerolactone) is manufactured under a strict quality management system. Each batch is characterized for critical parameters including monomer ratio, molecular weight, polydispersity, and residual monomer content to ensure batch-to-batch consistency for your formulations. Certificates of Analysis (COA) detailing these specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C. This material is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent hydrolysis and property degradation.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Identification (IR)	Conforms to structure
Monomer Ratio (CL:VL)	As per grade (e.g., 70:30, 50:50)
Inherent Viscosity	0.5 - 2.5 dL/g (varies by grade)
Weight Average Molecular Weight (Mw)	10,000 - 100,000 Da
Polydispersity Index (PDI)	< 2.0
Residual Monomer	< 0.5%
Melting Point (DSC)	40 - 60 °C
Moisture Content (KF)	< 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.