Preparation and tribological studies of stearic acid-modified biopolymer coating

Shih Chen Shi, Yao Qing Peng

研究成果: Article

摘要

Adding fatty acids to cellulose derivatives can effectively improve the hydrophobicity and surface energy of materials and decrease the microscale coefficient of friction. In this research, stearic acid (SA) and the hydroxypropyl methylcellulose (HPMC) solution were mixed to prepare HPMC/SA composite films. The SA molecules formed crystals distributed within the HPMC film, thus increasing the surface roughness and surface wettability. The intermolecular interaction between HPMC and SA causes the formation of micelles. SEM images of the wear marks indicate that SA debris generated during wear as a third body. Third-body layer provide load capacity during wear and reduces direct contact between the grinding object and the HPMC coating, reducing friction coefficient and wear effectively. It is considered the dominate wear mechanism of HPMC/SA composite under macroscopic wear.

原文English
文章編號105304
期刊Progress in Organic Coatings
138
DOIs
出版狀態Published - 2020 一月

指紋

Biopolymers
Stearic acid
Wear of materials
Coatings
Friction
Cellulose derivatives
Micelles
Composite films
Hydrophobicity
Fatty acids
Interfacial energy
Debris
Wetting
stearic acid
Hypromellose Derivatives
Fatty Acids
Surface roughness
Crystals
Scanning electron microscopy
Molecules

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Surfaces, Coatings and Films
  • Organic Chemistry
  • Materials Chemistry

引用此文

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