The Spreading and Adhesion of Polymers on Wool
The Spreading and Adhesion of Polymers on Wool
复制标题
聚合物在羊毛上的铺展和粘附
DOI：
10.1177/004051756403400711
复制
发表时间：
1964
影响因子：
2.3
通讯作者：
J. McPhee
中科院分区：
文献类型：
--
作者：
H.D. Feldtman;J. McPhee
从羊毛和聚合物的表面自由能的角度考虑聚合物在羊毛上的应用。提出了一种理论，解释了不同聚合物在降低缩绒收缩率方面的有效性，即由于在羊毛纤维表面上容易发生铺展。结果表明，羊毛的临界表面张力γ_i必须大于所涂聚合物的临界表面张力γ_e，这是一个有效的铺展判据。计算了各种聚合物在正常羊毛和用化学试剂预处理的羊毛上的铺展系数。铺展系数与化学预处理的相对效果一致，可以提高聚合物处理的效率。最好的预处理是那些将羊毛的临界表面张力从45达因厘米（正常羊毛）增加到65-70达因厘米的预处理。
The application of polymers to wool is considered from the point of view of the surface free energies of wool and the polymers. A theory is developed explaining the effectiveness of different polymers in reducing felting shrinkage as heing due to the ease with which spreading can occur over the surface of the wool fibers. It is shown that a useful criterion for spreading is that γ, (the critical surface tension) of wool must be greater than γe of the applied polymer. Spreading coefficients are calculated for various polymers on normal wool and on wool pretreated with chemical reagents. The spreading coefficients agree with the relatiye effects of chemical pretreatments, which can improve the efficiency of polymer treatments. The best pretreatments are those which increase the critical surface tension of wool from 45 dyne cm (normal wool) to 65-70 dyne cm.