| 摘要 |
<p>A porous fiber having a pore structure comprising interconnected spaces enclosed with lamellae and a number of longitudinally arranged fibrils that connect the lamellae with each other all over the fiber, which is produced by blending a polyolefin with a hydrophilic copolymer mainly comprising monomer units represented by formula (I) and ethylene units, melt spinning the blend, and stretching the resulting fiber; wherein R?1 and R2¿ represent each independently hydrogen or methyl, and n is 1 to 9. The obtained fiber has permanent hydrophilicity and a large surface area, is very lightweight and soft to the touch, has a fair white color without transparence, and is endowed with excellent mechanical properties in spite of its high void fraction.</p> |
