TY - JOUR
T1 - Friction properties of PVA-H/steel ball contact under water lubrication conditions
AU - Mamada, Keisuke
AU - Kosukegawa, Hiroyuki
AU - Fridrici, Vincent
AU - Kapsa, Philippe
AU - Ohta, Makoto
N1 - Funding Information:
This research is supported by JSPS Core-to-Core Program , no. 20001 .
PY - 2011/7
Y1 - 2011/7
N2 - An in vitro biomodel with mechanical properties similar to those of human soft tissues is useful to learn skills for clinical practice of medical doctors or dentists (for instance for suturing oral mucosa). Poly (vinyl alcohol) hydrogel (PVA-H) with good mechanical strength and low surface friction has potential for use in such a biomodel for surgical trainings. The friction properties of biomodels and medical devices are an important factor for reproducing the natural feel of human soft tissue. However, while the low surface friction of PVA-Hs is well known, the effects of PVA factors such as concentration, polymerization, and saponification on the friction properties have not been clarified. In this study, five kinds of PVA-H samples with different properties were prepared, and ball-on-disk friction tests were carried out using a stainless steel ball, the same material as that of a surgical scalpel blade. Furthermore, the contact areas between the PVA-H sample and the ball were evaluated by measurement of the contact radii. Results showed that the friction coefficients of various PVA-Hs varied despite their similar contact areas.
AB - An in vitro biomodel with mechanical properties similar to those of human soft tissues is useful to learn skills for clinical practice of medical doctors or dentists (for instance for suturing oral mucosa). Poly (vinyl alcohol) hydrogel (PVA-H) with good mechanical strength and low surface friction has potential for use in such a biomodel for surgical trainings. The friction properties of biomodels and medical devices are an important factor for reproducing the natural feel of human soft tissue. However, while the low surface friction of PVA-Hs is well known, the effects of PVA factors such as concentration, polymerization, and saponification on the friction properties have not been clarified. In this study, five kinds of PVA-H samples with different properties were prepared, and ball-on-disk friction tests were carried out using a stainless steel ball, the same material as that of a surgical scalpel blade. Furthermore, the contact areas between the PVA-H sample and the ball were evaluated by measurement of the contact radii. Results showed that the friction coefficients of various PVA-Hs varied despite their similar contact areas.
KW - Adhesion
KW - Hydrogel
KW - Lubrication
KW - Sliding friction
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U2 - 10.1016/j.triboint.2010.12.014
DO - 10.1016/j.triboint.2010.12.014
M3 - Article
AN - SCOPUS:79955666964
VL - 44
SP - 757
EP - 763
JO - Tribology International
JF - Tribology International
SN - 0301-679X
IS - 7-8
ER -