| Summary: | 碩士 === 中原大學 === 化學研究所 === 94 === Abstract
The study of polyacrylonitrile(PAN) fiber’s modification, by taking advantage of the tetrazole chemistry , is described in this paper. The newly developed modification preserves not only the integrity of fiber’s appearance, but also the physical durability of fiber’s spinning process.
The dye ability and moisture absorption capability of regular PAN fiber are not good,Polyacrylonitrile(PAN) fiber’s modification can improve these properties.
Formation of tetrazole can be achieved base on the nitrile/azide (3+2)-cyclization reaction. Thus, treatment of PAN’s nitrile moiety with NaN3 in the presence of catalytic amounts of NH4Cl in either DMF/MeOH or MeOH at reflux temperature gives product in good yield.
Measurement of grafting efficiency, IR, UV-VIS, TGA, and electric resistance are used to determine the resultant product’s properties of dye ability, moisture absorption capability, anti-static capability, thermal stability, and fiber’s spin ability.
The modified PAN fiber made from this work showed the dye up-take increase from 3.6% to 98.3% , the moisture absorption capability increase from 8.7% to 13.2%.
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