POLYMERIZATION BEHAVIOR OF 2,2,6,6-TETRAMETHYLPIPERIDINYL METHACRYLAE - A MONOMER CARRYING A HINDERED AMINE GROUP
POLYMERIZATION BEHAVIOR OF 2,2,6,6-TETRAMETHYLPIPERIDINYL METHACRYLAE - A MONOMER CARRYING A HINDERED AMINE GROUP
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DOI：
10.1002/pola.1992.080300604
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发表时间：
1992-05-01
影响因子：
--
通讯作者：
GOH, SH
中科院分区：
文献类型：
--
作者：
LEE, CS;LAU, WWY;GOH, SH
以偶氮二异丁腈（AIBN）为引发剂，合成了甲基丙烯酸2，2，6，6-四甲基哌啶酯（TPMA）与苯乙烯（S）及甲基丙烯酸甲酯（MMA）的共聚物。 在单体竞聚率r1、r2的测定中使用来自0.10-0.80摩尔分数TPMA的进料的S-TPMA共聚物和来自0.04-0.85摩尔分数TPMA的进料的MMA-TPMA共聚物。 用四种不同的方法计算了r1和r2，计算结果吻合较好。 S-TPMA共聚物的结构是交替的，而MMA-TPMA共聚物的结构是无规的。 两种共聚物都是潜在的受阻胺光稳定剂（HALS），并且预期从聚苯乙烯和聚（甲基丙烯酸甲酯）基础聚合物中提取较少，并且与聚苯乙烯和聚（甲基丙烯酸甲酯）基础聚合物更相容。
Copolymers of 2,2,6,6-tetramethylpiperidinyl methacrylate (TPMA) with styrene (S) and with methyl methacrylate (MMA) were synthesized using AIBN as initiator. S-TPMA copolymers from feed ranging from 0.10-0.80 mole fractions TPMA and MMA-TPMA copolymers from feed of 0.04-0.85 mole fractions TPMA were used in the determination of monomer reactivity ratios r1, r2. Four different methods were employed in the calculations of r1 and r2 and all calculated results were in good agreement with each other. The structure of S-TPMA copolymers was inferred to be of an alternating nature while that of MMA-TPMA copolymers was random. Both copolymers are potential hindered amine light stabilizers (HALS) and are expected to be less extractable from, and more compatible with, polystyrene and poly(methyl methacrylate) base polymers.