Term: isomorphic polymer blend
https://doi.org/10.1351/goldbook.IT07233

Definition:
polymer blend of two or more different semi-crystalline polymers that are miscible in the crystalline state as well as in the molten state.

Notes:
0) Such a blend exhibits a single, composition-dependent @G02641@, Tg, and a single, composition-dependent @M03821@ point, Tm.
1) This behaviour is extremely rare; very few cases are known.

Related Terms:
1) glass-transition temperature (http://doi.org/10.1351/goldbook.G02641).
2) melting (http://doi.org/10.1351/goldbook.M03821).
3) polymer blend (http://doi.org/10.1351/goldbook.P04736).

Source: PAC, 2004, 76, 1985. 'Definition of terms related to polymer blends, composites, and multiphase polymeric materials (IUPAC Recommendations 2004)' on page 1988 (https://doi.org/10.1351/pac200476111985)

Citation: 'isomorphic polymer blend' 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.IT07233

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