摘要
采用动态粘弹仪详细研究了湿度对再生纤维素纤维粘弹性的影响。结果表明，在３５～６５℃温度范围内，随着湿度的增加，再生纤维素的Ｅｒ下降，ｔａｎδ上升。这表明水分子的渗入对纤维素起到了增塑作用，对纤维素分子链间及分子链内的氢键起到了屏蔽作用，使得一些运动单元得以运动。实验结果也表明，三种再生纤维素样品有不同的结构，说明再生方法和纺丝条件对再生纤维素结构有较大的影响。
The effects of temperature and relative humidity on dynamic viscoelastic property of various regenerated celluloses have been investigated in detail. Experimental results show that the storage modulus E r decreases and loss tangent tan δ increases with increasing of RH within temperature range of 35～65℃. This indicates that water molecules penetrate into cellulose and mask off inter and intra chain hydrogen bonds, and then encourage some motion units to move. More importantly, experimental results indicate that various regenerated cellulose samples may have different microstructures and superstructures, which affects the mechanical property of regenerated cellulose significantly. This shows that regeneration technique have a great influence on the microstructure and superstructure and properties of regenerated celluloses.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
1999年第1期16-20,共5页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
中日合作科研项目
关键词
再生纤维素
粘弹性
纤维
超分子结构
regenerated cellulose
dynamic viscoelasticity
fiber
superstructure
