高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (6): 870.
• 论文 • 上一篇
邱永兴, 封麟先, 俞小洁, 杨士林
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国家自然科学基金;浙江省自然科学基金
QIU Yong-xing, FENG Lin-xian, YU Xiao-jie, YANG Shi-lin
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摘要: 人们利用苯环在260nm区域的特征紫外吸收测定共聚物中聚苯乙烯(PS)链节含量时,常假设共聚物的紫外吸收仅来源于PS链节,且共聚物和PS均聚物具有相同的摩尔吸光系数.
关键词: 紫外导数光谱法, 共聚物组成测定, 苯乙烯共聚物
Abstract: Because of the background absorbance of stearyl poly(ethylene oxide), big errors arise when normal UVspectrometry is used to determine the polystyrene content of polystyrene-g-stearyl poly (ethylene oxide) (PS-g-SPEO).In order to eliminate the interference of SPEO, we developed the first derivative UV spectrometry for the quantitative composition determination of PS-g-SPEO.It was discovered that the undesirable background absorbance mentioned above could be completely eliminated and the compositions of PS-g-SPEO copolymers determined from the first derivative spectrometry coincide quite well with the data derived from elementary analysis.The results indicate that the nrst derivative UVspectrometry is a feasible and accurate method for the composition determination of polystyrene-based copolymers.
Key words: The derivative UV spectrcmetry, Composition determination of copolymers, Polystyrene-based copolymer
TrendMD:
邱永兴, 封麟先, 俞小洁, 杨士林. 紫外导数光谱法在含苯乙烯链节共聚物组成测定中的应用. 高等学校化学学报, 1992, 13(6): 870.
QIU Yong-xing, FENG Lin-xian, YU Xiao-jie, YANG Shi-lin . Application of Derivative UV Spectrometry to the Composition Determination of Polystyrene-based Copolymers. Chem. J. Chinese Universities, 1992, 13(6): 870.
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http://www.cjcu.jlu.edu.cn/CN/Y1992/V13/I6/870