Parylene
Term: Parylene
Category: Polymers
Definition: A synthetic polymer that is applied as a continuous and pinhole-free coating over a substrate. This polymer is chemically inert, biocompatible, and possesses excellent dielectric and moisture barrier properties.
Structure: Linear polymer consisting of repeating para-xylylene units (–C₆H₄–CH₂–CH₂–) with variations such as parylene-C, parylene-N, or parylene-D depending on halogenation.
Source: Synthetic polymer
Common Uses:
Used in biomedical applications as a protective coating for implants, stents, catheters, pacemakers, and other medical devices. It improves biocompatibility, provides a moisture and chemical barrier, reduces friction, and enhances long-term device reliability in physiological environments.
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