network defect 

https://doi.org/10.1351/goldbook.NT07604
Elastically ineffective chains in a polymer network.
Note:
A network defect is caused by a loose end or a cyclic structure.
Source:
PAC, 2007, 79, 1801. (Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)) on page 1820 [Terms] [Paper]
Citation: 'network defect' 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.NT07604 RIS BibTex EndNote
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Last revised: February 24, 2014