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Related Experiment Video

Updated: Jun 18, 2026

Analysis and Specification of Starch Granule Size Distributions

Analysis and Specification of Starch Granule Size Distributions

Published on: March 4, 2021

Drying and cracking mechanisms in a starch slurry.

Lucas Goehring¹

¹BP Institute for Multiphase Flow, Madingley Rise, Madingley Road, Cambridge CB3 0EZ, United Kingdom. lg352@cam.ac.uk

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|November 13, 2009

Summary

Drying starch cakes exhibit unique fracture patterns due to distinct liquid and vapor drying phases. This study models these drying dynamics, revealing insights into material porosity and transport mechanisms.

Area of Science:

Materials Science
Physics
Geology

Background:

Starch-water slurries are simple, reproducible models for studying fracture dynamics.
Previous research used these systems to model desiccation fracture in soils, paint films, and lava formations.

Purpose of the Study:

To investigate the physical properties of starch-water mixtures.
To develop a multiphase transport model for drying starch cakes.
To understand the mechanisms behind columnar fracture patterns in drying starch.

Main Methods:

Characterization of physical properties of starch-water mixtures.
Development and application of a multiphase transport model.
Observation and analysis of drying regimes and fracture patterns.

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Last Updated: Jun 18, 2026

Analysis and Specification of Starch Granule Size Distributions

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Main Results:

Starch cakes display a nonlinear elastic modulus and desiccation strain related to capillary pressure.
Material porosity is divided between intergranular and intragranular pores.
Two distinct drying regimes, governed by liquid and vapor transport, were identified.

Conclusions:

The separation of liquid and vapor transport mechanisms in drying starch is key to its unique columnar fracture formation.
The developed model provides a framework for understanding desiccation-induced fracture in porous materials.
Starch cakes serve as valuable model systems for diverse fracture phenomena.