Hierarchical Mechanisms of Lateral Interactions in High-Performance Fibers

ACS Applied Materials & Interfaces
Taylor A StockdaleKenneth E Strawhecker

Abstract

The processing conditions used in the production of advanced polymer fibers facilitate the formation of an oriented fibrillar network that consists of structures spanning multiple length scales. The irregular nature of fiber tensile fracture surfaces suggests that their structural integrity is defined by the degree of lateral (interfacial) interactions that exist within the fiber microstructure. To date, experimental studies have quantified interfacial adhesion between nanoscale fibrils measuring 10-50 nm in width, and the global fracture energy through applying peel loads to fiber halves. However, a more in-depth evaluation of tensile fracture indicates that fiber failure typically occurs at an intermediate length scale, involving fibrillation along interfaces between fibril bundles of a few 100s of nanometers in width. Interaction mechanisms at this length scale have not yet been studied, due in part to a lack of established experimental techniques. Here, a new focused ion beam-based sample preparation protocol is combined with nanoindentation to probe interfaces at the intermediate length scale in two high-performance fibers, a rigid-rod poly(p-phenylene terephthalamide) and a flexible chain ultrahigh molecular weight polyet...Continue Reading

References

Feb 1, 1994·Physical Review. B, Condensed Matter·Y A Dzenis, S P Joshi
Jun 30, 2012·Nature Methods·Johannes SchindelinAlbert Cardona
Dec 1, 2017·BMC Bioinformatics·Curtis T RuedenKevin W Eliceiri

❮ Previous
Next ❯

Related Concepts

Related Feeds

Adhesion Molecules in Health and Disease

Cell adhesion molecules are a subset of cell adhesion proteins located on the cell surface involved in binding with other cells or with the extracellular matrix in the process called cell adhesion. In essence, cell adhesion molecules help cells stick to each other and to their surroundings. Cell adhesion is a crucial component in maintaining tissue structure and function. Discover the latest research on adhesion molecule and their role in health and disease here.

Related Papers

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Jeffrey M CavesElliot L Chaikof
Proceedings of the National Academy of Sciences of the United States of America
Gautier VerhillePatrice Le Gal
© 2021 Meta ULC. All rights reserved