Term: hard-segment phase domain
https://doi.org/10.1351/goldbook.HT07293

Definition:
phase domain of microscopic or smaller size, usually in a block, graft, or segmented copolymer, comprising essentially those segments of the polymer that are rigid and capable of forming strong intermolecular interactions.

Note: Hard-segment phase domains are typically of 2-15 nm linear size.

Related Terms:
1) phase domain (http://doi.org/10.1351/goldbook.PT07286).
2) block (http://doi.org/10.1351/goldbook.B00682).
3) segmented copolymer (http://doi.org/10.1351/goldbook.ST07295).
4) intermolecular (http://doi.org/10.1351/goldbook.I03098).

Source: PAC, 2004, 76, 1985. 'Definition of terms related to polymer blends, composites, and multiphase polymeric materials (IUPAC Recommendations 2004)' on page 2002 (https://doi.org/10.1351/pac200476111985)

Citation: 'hard-segment phase domain' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.HT07293

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