Thermal Denaturation Behavior of IFs/IFAP Structures in Merino Wool in a HPDSC under Conditions of Intermediate Regain

摘要：

Merino wool fibers have been heated to a range of temperatures around the melting point in a High Pressure Different Scanning Calorimeter (HPDSC) under conditions of intermediate regain. The samples were investigated using Raman spectroscopy and polarized optical microscopy. Raman spectroscopy shows in wool samples with 7.3％ regain that the helix-coil transition in the crystalline sections of intermediate filaments starts at the onset temperature of melting process. Birefringence experiment shows that after heating to a temperature corresponding to the first peak the fiber are now birefringent on overall of the fiber, and that, furthermore, even after heating to beyond the second peak birefringence is definitely evident. It is suggested that molecular orientation is present in the heated fiber in which the α-helices in the intermediate filament have already melted or denatured.

关键词： hpdsc intermediate filament intermediate filament associated protein birefringence

作者: KYOHEI Joko

作者单位: Kyoto Women’s University, Kita-Hiyoshi Higasiyama-ku Kyoto, 605-8501, Japan

会议类型: 国际会议

会议名称: The 12th International Wool Research Conference(第十二届国际羊毛会议12th IWRC)

会议地点: 上海

会议语种:英文

页码: 51-55

在线出版日期: 2010-10-19（万方平台首次上网日期，不代表论文的发表时间）