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Adhesion01:14

Adhesion

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Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
42.6K

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Related Experiment Video

Updated: Nov 7, 2025

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
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Environment-controlled water adsorption at hydroxyapatite/collagen interfaces.

Valerie Vaissier Welborn1

  • 1Davidson Hall 421A, 1040 Drillfield Drive, Blacksburg, Virginia 24060, USA. vwelborn@vt.edu.

Physical Chemistry Chemical Physics : PCCP
|May 4, 2021
PubMed
Summary

Bone water

Area of Science:

  • Biomaterials Science
  • Computational Biophysics
  • Nanotechnology

Background:

  • Bone's hierarchical structure relies on water interacting with hydroxyapatite and collagen.
  • Bone water exists as bound or mobile, influencing bone strength.
  • A molecular understanding of these water-bone interactions is lacking.

Purpose of the Study:

  • To investigate nanoscale water adsorption properties in bone tissues.
  • To elucidate the molecular mechanisms governing water interactions with bone components.
  • To explore the impact of environmental factors on bone water dynamics.

Main Methods:

  • Utilized advanced density functional theory (DFT) methods.
  • Simulated water adsorption on simplified bone tissue models.

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  • Analyzed the influence of collagen conformation and confinement on water behavior.

    • Main Results:

    • Environmental factors, not the surface itself, dictate water adsorption on hydroxyapatite.
    • Collagen conformation and confinement significantly affect water adsorption.
    • Reduced water adsorption capabilities were observed under simulated aging bone conditions.
    • Findings align with experimental observations of bone strength and aging.

    Conclusions:

    • Environmental factors play a crucial role in bone water adsorption at the nanoscale.
    • Changes in bone microenvironment, like during aging, can impair water adsorption.
    • This study offers a new molecular perspective on bone tissue interactions, potentially informing bone repair strategies.