Characteristic Changes in Vectran® Fibers Treated with Heat, HCl, and NaOH 


Vol. 51,  No. 5, pp. 222-229, Oct.  2014
10.12772/TSE.2014.51.222


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  Abstract

Grafting poly(methacrylic acid) (PMA) onto polyethylene (PE) powders using a photoinitiated reaction with UV irradiation was carried out, and the effects of PMA grafting on the thermal and surface properties of PE were characterized. The PE-g-PMA powders obtained were analyzed by FT-IR spectroscopy, zeta size analysis, thermogravimetric analysis, and differential scanning calorimetry. PE-g-PMA films were prepared by melt pressing the powders and then analyzed by scanning electron microscopy and contact angle measurement. The hydrophilicity of the PE-g-PMA films increased on increasing the degree of grafting. The heat of melt crystallization, heat of melting, melt-crystallization temperature, and melting temperature of PE-g-PMA decreased with increase in the degree of grafting. This was attributed to the PMA chains hindering the crystallization of PE.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)