Determination of Relative Molecular Weight and Distribution of Octyl Phenolic Tackifying Resin by Gel Permeation Chromatography
The relative molecular weight and distribution of octyl phenolic tackifying resin were determined by the gel permeation chromatography(GPC),and the effects of octyl phenolic tackifying resin on its softening point and tackifying effect were studied.The determined test conditions were as follows:flow rate 1.0 mL·min-1,column temperature 40 ℃,sample solution mass concentration(2±0.2)mL·min-1.The softening point and tackifying effect of octyl phenolic resin increased with the increase of its relative molecular weight.
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