摘要
使丙烯酸(AA)单体在聚乙烯醇(PVA)溶液中聚合,并由聚合物溶液纺丝制备了PAA/PVA共混高吸水性纤维。通过体视显微镜定量观测纤维的动态溶胀过程,对试验曲线进行微机拟合,建立了纤维溶胀动力学速率方程。未经热处理的纤维溶胀行为可用Viogt并联粘壶弹簧模型描述,体积溶胀速率方程式为:V(t)=1.9936:1-0.9955exp(-t/1.1827)]。经热处理的纤维溶胀行为与Viogt模型有较小偏差,由所得溶胀速率方程证实热处理后纤维链段松弛时间增加。
The superabsorbent blend fiber of PVA/PAA had been prepared by solution polymerization using acrylic acid (AA) monomer in polyvinyl alcohol (PVA) solution then wet spinning. The stereo-microscope was used to quantitatively monitor the swelling behavior of fiber for the real-time visualization. The experimental curves obtained were fitted by computer. The swelling dynamic rate equations were established. The swelling behavior of unheated fiber could be described by Viogt parallel dashpot-spring model, the volume swelling rate equation was V (t) = 1. 993 6[1-0. 995 5 exp (-t/ 1. 182 7)3. The swelling behavior after hot processed fiber existed small deviation when described by Viogt model and the relaxation time of chain segments in the fibers increased.
出处
《精细石油化工》
CAS
CSCD
北大核心
2005年第2期40-42,共3页
Speciality Petrochemicals
基金
天津市自然基金重点资助项目(编号013801811)。
