STUDY ON THE SEQUENCE STRUCTURE OF STYRENE- 2, 2, 6, 6- TETRAMETHYL-4-PIPERIDINYL METHACRY-LATE COPOLYMER BY INFRARED SPECTROSCOPY
用红外光谱研究苯乙烯-4(甲基丙烯酸)2,2,6,6-四甲基哌啶醇酯共聚物的序列结构

A series of styrene (st) and 2, 2, 6, 6-tetramethyl-4-piperidinyl methacrylate (MTMP) copolymers were prepared by free radical copolymerization and their IR spectra were measured.It was discovered that the 1152.5 cm-1 band of MTMP was shifted to lower wave numbers with a decrease in the content of MTMP in the copolymer.This displacement of wave number of this band is approximately proportional to Fams which is called triad sequence distribution.The diad sequence distribution Pmm which was calculated through measuring the position of the ve=O of MTMP was discussed.