Why Does Polycarbonate Turn Yellow? Causes, Prevention & Grade Selection

PC yellowing can reduce optical clarity and trigger customer complaints. Learn the main causes, how to diagnose them, and how to choose the right grade for the application.

The Chemistry: What Actually Happens When PC Turns Yellow

Cause 1: Thermal Degradation During Processing

Cause 2: UV Exposure and Photo-Oxidation

Cause 3: Raw Material Quality and Grade Fit

A Quick Diagnostic: Which Cause Is Yours?

How Grade Matching Prevents Yellowing