温度对棉纤维超分子结构的影响

Effect of Temperature on Cotton Fibre Super-molecular Structure

全铃期日均温 1 9.5℃和夜均温 1 7.0℃以上时α角随铃龄增大不断宽化 (变大 ) ,低于该范围时α角随纤维发育不断变小 (优化 )。φ角和ψ角随纤维发育不断优化 (变小 ) ,不同处理相同铃龄随温度降低 φ角与 ψ角值有变大趋势。α、φ及 ψ角值与铃龄呈曲线关系 ,且相关显著。随纤维发育横向晶粒尺寸逐渐增大 ,相同铃龄随温度下降晶粒尺寸值降低 ,横向晶粒尺寸值与铃龄及全铃期日均温呈曲线关系 ,且相关显著。

Angle α widens continually with fibre development above 19.5℃ DMT and 17.0℃ NMT in the whole boll development period. When temperature drops below this range ,angle α converts to be smaller, which has positive effect on fibre strength with fibre development and so do angle φ and ψ.Angle φ and ψ tend to rising with temperature dropping at the same boll period. Angle α、φ and ψ have curve relationship significantly associated with boll period. Crystalline grain size increases with fibre development, but tends to decrease with temperature dropping at the same boll period. Crystalline grain size has significant curve relationship with boll period and DMT,NMT of whole boll development period.