Module 2 — Materials and their impact profile
Comparing fibre and fabric routes on impact terms — and why simple rankings mislead.
Fibre rankings are quoted constantly and understood rarely. The impact of a material depends on system boundaries, geography, energy mix, yield and what the comparison counts. This module covers fibre production impacts, nonwoven routes, and the dyeing load that follows the material choice — with the emphasis on reading a comparison critically rather than memorising a league table.
By the end of this module: Compare material options on impact evidence, and explain the boundaries that change the answer.
Prerequisite: Module 1 — you should know why volume and accuracy matter before comparing materials.
1. Read these chapters
2. Then work through these stages
Module quiz
5 questions on Module 2 — Materials and their impact profile. Answer them all, then check your score before moving on. 4 correct or more is a pass. Your best score is saved on this device, and to your account when you are signed in. This is a self-check, not an accredited assessment.
1. Comparing two fibres on "impact per kilogram" can mislead because
2. The energy mix of the production country matters most for
3. Recycled content improves a material's profile only if
4. Dyeing belongs in a material's impact profile because
5. The most defensible way to use a published fibre ranking is to