Elastic Property

The crimp ratio, residual crimp ratio and elastic recovery rate of soybean fiber were tested, as illustrated in Table.13.

Table.13 The crimp ratio, residual crimp ratio and elastic recovery rate of soybean fiber

Table.13 shows that the crimp ratio of soybean fiber is only 1.65%, while the common value of other chemical fiber is 10~15%. Therefore the cohesion force of soybean fiber is rather small and anti-slipping agent is necessary in spinning. The residual crimp ratio is only 0.88%, while the common values of other chemical fibers are 10%, which means that the crimp of soybean fiber is easy to unwind and the crimp stability is poor. The elastic recovery rate of soybean fiber is 55.4%, which is also lower than the common values of other chemical fibers (70~80%). Therefore the elastic property of soybean fiber is poor.