POLYMERIZATION OF METHYL METHACRYLATE BY NICKEL CATALYST WITH BIS(N,O) LIGANDS IN THE PRESENCE OF MAO COCATALYST

CHEN Xiaoli; ZHU Fangming; LIN Shang’an

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POLYMERIZATION OF METHYL METHACRYLATE BY NICKEL CATALYST WITH BIS(N,O) LIGANDS IN THE PRESENCE OF MAO COCATALYST

Research Article | 更新时间：2021-08-24

- POLYMERIZATION OF METHYL METHACRYLATE BY NICKEL CATALYST WITH BIS(N,O) LIGANDS IN THE PRESENCE OF MAO COCATALYST
- Acta Polymerica Sinica Issue 11, Pages: 1064-1068(2007)
- 作者机构：
  
  1. 中山大学化学与化学工程学院高分子研究所
  2. 中山大学化学与化学工程学院高分子研究所,广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC： O631.5
- Published：2007，
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[1]陈晓丽,祝方明,林尚安.双[N,O]配体合镍催化剂/MAO催化MMA聚合的研究[J].高分子学报,2007(11):1064-1068.

CHEN Xiaoli, ZHU Fangming, LIN Shang’an. POLYMERIZATION OF METHYL METHACRYLATE BY NICKEL CATALYST WITH BIS(N,O) LIGANDS IN THE PRESENCE OF MAO COCATALYST. [J]. Acta Polymerica Sinica (11):1064-1068(2007)
[1]陈晓丽,祝方明,林尚安.双[N,O]配体合镍催化剂/MAO催化MMA聚合的研究[J].高分子学报,2007(11):1064-1068. DOI：

CHEN Xiaoli, ZHU Fangming, LIN Shang’an. POLYMERIZATION OF METHYL METHACRYLATE BY NICKEL CATALYST WITH BIS(N,O) LIGANDS IN THE PRESENCE OF MAO COCATALYST. [J]. Acta Polymerica Sinica (11):1064-1068(2007) DOI：

摘要

合成了双[水杨醛（对硝基苯）亚胺]合镍催化剂A和双[水杨醛（对甲氧基苯）亚胺]合镍催化剂B.该两种双[N

O]配体合镍配合物/MAO催化体系能有效地催化极性单体甲基丙烯酸甲酯（MMA）聚合

催化活性可高达105gPMMA/（molNi.h）.其中配体对位含有硝基吸电子（共轭）效应的催化剂A/MAO体系有相对较高的聚合反应热稳定性

温度达50℃时仍具有高催化活性.配体对位含有甲氧基推电子（共轭）效应的催化剂B/MAO则在30℃和Al/Ni摩尔比为600时表现出最高的催化活性.催化剂B/MAO体系催化得到PMMA的链序列结构以间规为主（含高达73.2%rr三元组）

具有较高的玻璃化转变温度（Tg=106.4℃）.

Abstract

Two novel nickel complexes of bis[N-(4-nitrophenyl)salicylaldiminate]nickel(Ⅱ)A and bis[N-(4-methoxyphenyl)salicylaldiminate]nickel(Ⅱ)B weresynthesized.These new type bis(N

O)chelated nickel complexes/MAO catalysts are effective to catalyze polymerization of polar monomer methyl methacrylate(MMA).The A system which contains p-nitro substitution groups on the ligand having electron attractive effect exhibits better activity than B at higher polymerization temperature(50℃).At the polymerization conditions

T_p=30℃;Al/Ni=600

the B system shows the best activity.The chain sequence distribution of PMMA obtained with B systems is 73.2% rr triads as determined by 13C-NMR

and the glass-transition temperature(T_g)is up to 106.4℃ by DSC measurements.

关键词

水杨醛亚胺双[NO]配体合镍催化剂聚甲基丙烯酸甲酯

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