TY - JOUR
TI - Thermal properties of flax fiber scoured by different methods
AU - Lei Zheng
AU - Ruo-Yao Ding
AU - Zheng-e Dong
AU - Xingqun Zhang
AU - Chong-Wen Yu
JN - Thermal Science
PY - 2015
VL - 19
IS - 3
SP - 939
EP - 945
PT - Article
AB - Thermal properties of flax roves untreated and treated were characterized by  differential scanning calorimetry (DSC) and thermal gravity analyzer (TGA)  in order to understand their thermal behavior in more detail and to evaluate  the effect of scouring processing on the thermal behavior. Flax roves were  treated with six kinds of methods including biological scouring, one bath,  two bath, bleaching, alkali scouring and industry chemical scouring as  standards. Results showed that all treatments improved thermal stability of  flax roves. The results indicated that glass transition temperature (Tg)  decreased after scouring besides the sample by directly bleaching. It is  more difficult to determine the endothermic peak of flax treated by chemical  scouring in industry because it takes a very flat course. A distinct  endothermic peak was observed for the untreated flax rove, while a distinct  exothermic peak in different temperature interval was revealed for other  four treated flax rove samples. For TGA analysis, thermal degradation of  flax roves studied consists of three regions of the initial, main, and char  decomposition, and the third stage consists of secondary weight loss and  carbonization for flax roves with biological scouring, one-bath and  two-bath. Besides, different residue left indicates that the bio-scoured  flax roves are lost with volatile products and does not contribute to char  formation. These results provide valuable preferences for mechanism and top  value added application of bio-scouring in flax roves.