Quality Control Methods for Macromonomers of Polycarboxylate Superplasticizer Based on Infrared Spectroscopy

Three kinds of methods for spectrum processing, peak height method, peak area method and correlation coefficient method, were used to study the two kinds of macromonomers of polycarboxylate superplasticizer, HPEG and TPEG. The research found that it is more accurate to use the correlation coefficient method to control the quality of the two kinds of macromonomers. The verification results showed that they were consistent with the test results of the cement paste. The macro quality control standards for the HPEG and TPEG were initially established. The important reference data and evaluation basis for the HPEG and TPEG were provided, and the quality control values of the HPEG and TPEG were 0.9106 and 0.9070, respectively.