Latex
Term: Latex
Category: Substrate
Definition: Latex is an elastic polymer dispersion, most commonly referring to natural rubber latex derived from the sap of Hevea brasiliensis, or to synthetic latexes such as styrene–butadiene or nitrile-based systems. Natural latex is composed primarily of cis-1,4-polyisoprene and is valued for its excellent elasticity, tensile strength, and barrier properties.
In medical applications, latex products are often surface-treated or coated with surface treatments like hydrophilic coatings to improve lubricity, reduce protein leaching, and enhance biocompatibility. Due to the risk of latex allergy, synthetic alternatives or surface coatings are frequently employed to reduce allergen exposure while maintaining performance.
Structure:
Elastomeric polymer chains (natural latex: cis-1,4-polyisoprene) arranged in an amorphous, crosslinked network providing high elasticity.
Source:
Natural (from rubber tree sap) and synthetic (petrochemical-derived elastomer latexes).
Uses:
- Medical gloves, catheters, balloons, elastic bandages, condoms, adhesive coatings, tubing, protective equipment.
Coated products requiring flexibility, stretchability, and barrier performance.
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