Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Dynamic Arrest of Adhesive Hard Rod Dispersions

Published

Author(s)

Ryan P Murphy, Harold Wickes Hatch, Nathan NMN Mahynski, Vincent K. Shen, Norman J. Wagner

Abstract

Dynamic arrest transitions of model, thermoreversible dispersions of adhesive hard rods are measured as a function of absolute temperature Τ = 15 -40 °C, aspect ration L/D{approximately equal}3-7, and volume fraction φ0.1-0.5. The critical gel temperature Τgel and glass volume fraction φg are quantified based on the particle dynamics and rheology. Scattering measurements of the attraction-driven gel boundaries reveal a convergence in reduced temperature τ for φ<φg, indicating rod gelation occurs at a similar effective attraction independent of L/D. Monte Carlo simulations find an average bond coordination number [n6dc^]{approximately equal}2.4 at the gel point, supporting the link between physical gelation and rigidity percolation of rod-like dispersions.
Citation
Soft Matter
Volume
16
Issue
5

Keywords

Gelation, glass formation, anisotropic particles, scattering

Citation

, R. , , H. , , N. , Shen, V. and , N. (2020), Dynamic Arrest of Adhesive Hard Rod Dispersions, Soft Matter, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=925778 (Accessed October 6, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created February 6, 2020, Updated September 15, 2020
Was this page helpful?