Description

Polycaprolactone-Block-Polytetrahydrofuran-Block-Polycaprolactone is a high-performance, biodegradable thermoplastic elastomer synthesized from caprolactone and tetrahydrofuran monomers. This triblock copolymer is engineered to deliver a unique balance of elasticity, toughness, and controlled degradation, making it a critical material for advanced applications. It is primarily sought by manufacturers in the biomedical, specialty adhesive, and advanced polymer compounding industries seeking tailored material properties.

Application

• Biomedical Devices: A key component in the fabrication of bioresorbable sutures, drug delivery matrices, and tissue engineering scaffolds due to its biocompatibility and predictable degradation profile.
• Specialty Adhesives & Sealants: Used as a modifier to enhance the flexibility, adhesion, and biodegradability of hot-melt and pressure-sensitive adhesives for niche applications.
• Polymer Modification: Acts as a compatibilizer and toughening agent in polymer blends, improving the impact resistance and processing characteristics of rigid plastics.
• Controlled-Release Systems: Employed in agricultural and pharmaceutical sectors for the encapsulation and sustained release of active ingredients like fertilizers, pesticides, or pharmaceuticals.
• Shape-Memory Polymers: Serves as a fundamental material in the development of smart polymers that can return to a pre-defined shape upon stimulus, useful in medical implants and actuators.
• Elastomeric Fibers and Films: Utilized to produce fibers and films that require a combination of elasticity, strength, and environmental degradability.

Basic Information

Product Name	Polycaprolactone-Block-Polytetrahydrofuran-Block-Polycaprolactone
CAS No.	31831-53-5
Molecular Formula	(C6H10O2)m-(C4H8O)n-(C6H10O2)p
Molecular Weight	Variable (Typically 10,000 - 100,000 g/mol)
Synonyms	PCL-b-PTHF-b-PCL; Poly(ε-caprolactone)-block-poly(tetrahydrofuran)-block-poly(ε-caprolactone); Polycaprolactone-Polytetrahydrofuran-Polycaprolactone Triblock Copolymer; PCL-PTHF-PCL; CL-THF-CL Triblock Copolymer; Poly(oxy-1-oxo-1,6-hexanediyl)-block-poly(oxytetramethylene)-block-poly(oxy-1-oxo-1,6-hexanediyl); 4,4'-(Tetrahydro-2H-pyran-2,6-diyl)bis(butan-1-ol) polymer; Biodegradable Polyester-Polyether Block Copolymer
EINECS	Contact for details

Quality Control

Our Polycaprolactone-Block-Polytetrahydrofuran-Block-Polycaprolactone is manufactured under a strict quality management system. Each batch is characterized for critical parameters including molecular weight distribution (GPC), block composition (NMR), thermal properties (DSC), and residual monomer content to ensure consistent performance and purity suitable for demanding applications. Comprehensive Certificates of Analysis (COA) documenting all 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 room temperature (15-25°C). This material is hygroscopic (moisture-sensitive). For long-term storage, consider using desiccants or storing under an inert atmosphere to prevent hydrolysis and maintain optimal properties.

Specification

Item	Specification
Appearance	White to off-white pellets or solid
Identification (IR)	Conforms to structure
Number Average Molecular Weight (Mn)	As per grade (e.g., 20,000 - 80,000)
Polydispersity Index (PDI)	≤ 2.0
PCL Content	40 - 80% (by weight)
Melting Point (DSC)	40 - 60 °C
Residual Monomer (GC)	< 0.5%
Moisture Content (KF)	< 0.5%

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