Styrene-Isoprene-Styrene (SIS)
Key Aspects of SIS and Plasticizer Use:
Role of Plasticizers: Plasticizers are often used to reduce the viscosity of the SIS copolymer, which allows for easier application in hot-melt formulations and increases the stickiness of pressure-sensitive adhesives.
Impact on Properties: Increased plasticizer content can enhance the damping capacity and flexibility of the material. They also play a critical role in drug release profiles in SIS-based adhesive patches.
Applications: Plasticized SIS is common in applications requiring high softness and adhesion, including consumer goods, specialized adhesive tapes, and flexible medical patches.
Compatibility: SIS grades, like those listed by LCY CIC