Open AccessRelationship between fiber diameter and performance of yak wool
Author(s) -
Baigalmaa Danzan,
Sereeterdorj Dugerragchaa,
Naransolongo Ukhnaa,
Khishigjargal Tsedev
Publication year - 2021
Publication title -
mongolian journal of agricultural sciences/hôdôô až ahujn šinžlèh uhaan
Language(s) - English
Resource type - Journals
eISSN - 2524-0722
pISSN - 2310-6212
DOI - 10.5564/mjas.v33i2.1750
Subject(s) - yak , wool , wetting , materials science , contact angle , composite material , analytical chemistry (journal) , zoology , chemistry , chromatography , biology
This article demonstrates the thermal sensitivity and conductivity as well as the water permeability and absorptivity of Mongolian yak wool surfaces according to the Kawabata evaluation method. According to the results of the study, the mean value of thermal sensitivity (Qmax) of yak wool surface is 0.051 w/cm2 for down and 0.061 w/cm2 for coarse hair while the mean value of thermal conductivity is 2.08x10-4 (cal/cm ·0C) for down and 2.63x10-4(cal/cm · 0C) for coarse hair.
This study, with its high level of confidence (p = 0.05), proves the difference between down and coarse hair. Additionally, the study shows a strong correlation between the thermal conductivity and the fiber diameter of Mongolian yak wool, resulting in a correlation level of r = -0.80 for down and r = 0.86 for coarse hair.
When measuring the wettability of Mongolian yak wool, yak wool surface exhibited waterproof properties with a contact angle of 146.50 degrees for down hair and a contact angle of 147.10 degrees for coarse hair. The study also revealed a low correlation level of r = 0.39 for down and r = 0.40 for coarse hair when examining the relationship between the contact angle and the diameter of yak wool.