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凝胶渗透色谱法测定聚羧酸盐分散剂的相对分子质量及其分布

作  者:
范娅;纪三郝;卢忠利;张春华;张宗俭
关键词:
聚羧酸盐分散剂;凝胶渗透色谱;相对分子质量;分布;测定
摘  要:
采用凝胶渗透色谱法测定了聚羧酸盐分散剂GY-D1256的相对分子质量及其分布.通过对流动相、溶解时间、流速的筛选,确定了较佳的测试条件.实验结果表明,采用通用校正法测得GY-D1256的数均相对分子质量M_n为23 234,重均相对分子质量M_w为40 359,相对分子质量分布M_w/M_n为1.665.
作  者:
Fan Ya;Ji San-hao;Lu Zhong-li;Zhang Chun-hua;Zhang Zong-jian;Central Research Institute of China Chemical Science and Technology Co., Ltd.;
单  位:
Fan Ya%Ji San-hao%Lu Zhong-li%Zhang Chun-hua%Zhang Zong-jian%Central Research Institute of China Chemical Science and Technology Co., Ltd.
关键词:
polycarboxylate dispersant;;GPC;;molecular weight;;distribution;;determination
摘  要:
The molecular weight of polycarboxylate dispersant GY-D1256 was measured by gel permeation chromatography(GPC). The test condition was optimized by adjusting the mobile phase, dissolution time and mobile rate.The results showed that the number-average molecular weight M_n of GY-D1256 was 23 234, the weight-average molecular weight M_w was 40 359, and the molecular weight distribution M_w/M_n was 1.665, which were calculated by universal calibration method.

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