Antistatic ability of 1-n-tetradecyl-3-methylimidazolium bromide and its effects on the structure and properties of polypropylene

作者：Ding Yunsheng^*; Tang Haiou; Zhang Xiaomin; Wu Shuying; Xiong Renyan

来源：European Polymer Journal, 2008, 44(4): 1247-1251.

DOI：10.1016/j.eorpolymj.2008.01.030

• imidazolium ionic liquid
• polypropylene
• blend
• surface resistance
• volume resistance
• morphology
• thermal properties

In this study, 1-n-tetradecyl-3-methylimidazolium bromide ([C(14)mim]Br), one kind of imidazolium ionic liquid (imi-IL), was incorporated into polypropylene (PP) via melt blending, The measurement of surface resistance (R-s) and volume resistance (R-v) of neat PP and PP/[C(14)mim]Br blends indicated that [C(14)mim]Br had excellent antistatic properties. The PP/ [C(14)mim]Br blend had the best antistatic ability, when the weight ratio Of [C(14)mim]Br to PP reached 3/100. The surface resistance Of PP/[C(14)mim]Br decreased from the 7.67 x 10(13) to 1.40 x 10(7) Omega whereas the volume resistance of PP decreased from 2.67 x 10(14) to 2.60 x 10(7) Omega. Semicrystalline morphology and crystal structure were investigated by polarized optical microscopy (POM) and X-ray diffraction (XRD). The spherulites of PP became smaller with the addition Of [C(14)mim]Br, implying that [C(14)mim]Br had a nucleating effect in the PP matrix. The XRD study indicates the crystallization process of PP was affected by [C(14)mim]Br, and the crystallinity of PP was thus decreased. Scanning electron microscopy (SEM) studies reveal that [C(14)mim]Br had good dispersion in PP; thermogravimetric analysis (TGA) shows the addition of [C(14)mim]Br remarkably increased the thermal stability of PP even though it is a small molecule.

• 出版日期2008-4
• 单位合肥工业大学