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本文以经硅烷化处理的多孔硅胶球为填料,在25℃下,对乙丙二元共聚物(EP)和聚苯乙烯(PS)标样在CHCl_3中,对聚砜(PSF)和PS分别在CHCl_3、1,2-DCE、THF、DMF和DMF+0.07N NaNO_3中,以及对磺化聚砜(S-PSF)和PS在DMF+0.07N NaNO_3中,采用流体力学体积法研究了其GPC普适标定的适用性。结果表明:EP和PS在CHCl_3中以及PSF和PS在CHCl_3、1.2-DCE和THF中的GPC标定是通适的,而在其他所有体系中均不能通适。对产生这些不同结果的可能原因进行了讨论。 我们的结论是对聚合物来说,越是不良溶剂,则GPC普适标定的适用性越小。
In this paper, the silanized porous silica spheres were used as packing materials for polysulfone (PSF) and PS respectively at 25 ℃ for EP and PS standards in CHCl_3 In the CHCl_3, 1, 2-DCE, THF, DMF and DMF + 0.07N NaNO_3, and the sulfonated polysulfone (S-PSF) and PS in DMF +0.07N NaNO_3, its GPC Usability of universal calibration. The results showed that GPC calibration of EP and PS in CHCl 3 and PSF and PS in CHCl 3, 1.2-DCE and THF were well-established, but not in all other systems. The possible causes for these different outcomes are discussed. Our conclusion is that the more poorly soluble the polymer, the less likely is it that GPC universal calibration will work.