J. Technology and Education , Vol.27, No.1, pp.15-19 (2020)

研究論文

ムチン(糖タンパク質)による摩擦力低減効果の基礎検討

およびムチン濃度推定法の試み

 

田中 孝国¹*，那須 裕規²，矢島 夏海¹，酒井 洋¹，高屋 朋彰¹，

大岡 久子³，桑原 敬司⁴

¹小山工業高等専門学校　物質工学科 (〒323-0806 小山市中久喜771)

*tanakatakakuni@oyama-ct.ac.jp

²小山工業高等専門学校　機械工学科 (〒323-0806 小山市中久喜771)

³群馬工業高等専門学校　物質工学科 (〒371-8530 群馬県前橋市鳥羽町 580)

⁴長岡技術科学大学 生物機能工学専攻 (〒940-2188 新潟県長岡市上富岡町1603-1)

 

Basic study of friction reduction by using mucin (glycoprotein) and trial of the presumption method

 

Takakuni TANAKA，Yuki NASU，Natsumi YAJIMA，Hiroshi SAKAI，

Tomoaki KOUYA，Hisako OOKA and Takashi KUWAHARA

National Institute of Technology, Oyama College

(771 Nakakuki, Oyama City, Tochigi Prefecture 323-0806, JAPAN)

National Institute of Technology, Gunma College

(580 Toriba, Maebashi, Gunma, 371-8530 Japan)

Nagaoka University of Technology, Department of Bioengineering

(1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, JAPAN)

 

(Received February 24, 2020; Accepted March 23, 2020)

 

Mucins are glycoproteins, and the functions of the mucins include the lubrication of the surfaces and protection from chemical, physical, and bacterial impact damage in vivo. Mucin is found in animal epithelial cell surfaces, saliva, and the stomach. The average molecular weight of pig stomach mucin is about 9 million. In this study, the lubrication ability of mucin was tested in a friction test of pig mucin (to examine the effect of mucin on friction). For the friction test, a mucin solution droplet was poured between stainless steel plates, and the surface friction was measured by a bearing tester. The data measured a static friction coefficient and a dynamical friction coefficient after 100 times of round-trip friction. The results showed that a mucin solution between metal plates has a friction reduction effect. Improvement was seen in the effect in comparison with no lubrication and water only. In the future, we will try to experiment with replacing the metal with cloth or artificial skin.

Key words: mucin / friction / glycoprotein