TY - JOUR
T1 - Preparation and tribological studies of stearic acid-modified biopolymer coating
AU - Shi, Shih Chen
AU - Peng, Yao Qing
N1 - Funding Information:
The authors gratefully acknowledge the financial support for this project from the Ministry of Science and Technology in Taiwan (MOST 106-2221-E-006-092-MY3 ). The authors also thank the Center for Micro/Nano Science and Technology and Instrumentation, National Cheng Kung University (NCKU), for technical support.
Funding Information:
The authors gratefully acknowledge the financial support for this project from the Ministry of Science and Technology in Taiwan (MOST 106-2221-E-006-092-MY3). The authors also thank the Center for Micro/Nano Science and Technology and Instrumentation, National Cheng Kung University (NCKU), for technical support.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/1
Y1 - 2020/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.porgcoat.2019.105304
DO - 10.1016/j.porgcoat.2019.105304
M3 - Article
AN - SCOPUS:85074439962
SN - 0300-9440
VL - 138
JO - Progress in Organic Coatings
JF - Progress in Organic Coatings
M1 - 105304
ER -