Lecture from Dr.Tooru Kitagawa
time: 2015-07-09

Title: Structure and Properties of PBO Fibre
Speaker: Dr. Tooru Kitagawa, Manager of Corporate Research Centre
Time: 3:00 Pm, Thursday , Nov 3, 2011
Place: Room 205, Bldg 14, SCUT North Campus
Sponsor: School of Materials Science and Engineering
 

Abstract:
PBO (poly-p-phenylenebenzobisoxazole) fibre is one of super-fibres that show high-modulus and high-strength with resistance against temperature. Two analytical trials to elucidate structural formation of PBO fiber have been carried out. One is to see a freezing point of water inside the wet fiber, which is filled in a narrow space between microfibrils and show -20C, indicating a big freezing point depression due to surface tension of water. The other is an alignment of the a-axis of PBO crystal in the cross-section of the fiber. It has been known that the fiber made with water coagulation shows a preference for radial in the direction of the a-axis. But the direction shows random if it is made with steam coagulation, which is a new finding and have never been reported in the literature as far as the author have understood it.
 

Brief introduction to Dr. Tooru Kitagawa
Education:
The Graduate School of Science, Osaka University
Doctor in Macromolecular Science, March 2001
M.S. in Macromolecular Science, March 1989
The Faculty of Science, Osaka University
B.S. in Macromolecular Science, March 1987