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采用体积排斥色谱法（ＳＥＣ）／ 示差折光指数（ＲＩ）／ 直角激光光散射（ＲＡＬＬＳ）／ 示差粘度（ＤＶ） 三检测联用技术表征了星形ＰＳ－ ＰＩ共聚物。结果表明，当星形ＰＳ／ＰＩ共聚物多达３２ 臂时还是符合普适标定曲线；对于分子量与淋洗体积曲线，星形ＰＳ－ ＰＩ共聚物的臂数越多，向淋洗体积大的方向迁移得就越多；结构因子随星形高聚物臂数的增加而增加。ＳＥＣ／ＲＩ／ＲＡＬＬＳ／ＤＶ 得到了传统ＳＥＣ 不能获得的有关分子尺寸信息。
The star PS-PI copolymer was characterized by triplex volumetric exclusion chromatography (SEC) / triple refractive index (RI) / RAL / DV measurement. The results show that when the star-shaped PS / PI copolymer up to 32-arm or in line with the universal calibration curve; for the molecular weight and the rinse volume curve, the star-shaped PS-PI copolymer arm number to the rinse volume The more the migration direction; the structural factor increases with the increase of the number of arms of the star polymer. SEC / RI / RALLS / DV obtained molecular size information not available with traditional SEC.