双核水杨醛亚胺中性镍催化MMA本体聚合  被引量:2

Bulk polymerization of methyl methacrylate with dinuclear neutral nickel(Ⅱ) catalyst.

在线阅读下载全文

作  者:崔永刚[1] 孙俊全[1] 王临才[1] 单玉华[1] 

机构地区:[1]浙江大学化工系,浙江杭州310027

出  处:《浙江大学学报(理学版)》2006年第1期80-84,共5页Journal of Zhejiang University(Science Edition)

基  金:国家自然科学基金资助项目(20074028;20374043);中国石油化工股份有限公司资助项目(X503027)

摘  要:经烷基化、甲酰化、Schiff碱缩合反应,制得水杨醛亚胺配体(3),其Na盐与trans-[NiCl(Ph)(PPh3)2]反应合成了中性镍配合物(4){[[O-(3-Cyclohexanyl)(5-CH3)C6H2-ortho-C(H)=N-2,6-C6H3(i-Pr)2]Ni(Ph3P)(Ph)]2-CH2},以GC-MS,1H NMR对中间产物及配合物进行了表征.在Al(i-Bu)3的助催化作用下,配合物(4)能有效催化MMA聚合.考察了温度、时间、Al/Cat(4)和MMA/Cat(4)等对聚合反应的影响.在Al/Cat(4)为10,聚合温度为60℃,聚合时间为15 h,MMA/Cat(4)为1 000的条件下,催化MMA聚合的单体转化率为69.9%,所得PMMA的相对分子质量分布为2.02.Substituted salicyladimine ligand (3) was prepared by alkylation, formulation and condensation, it's sodlumsalt reacted with trans-[NiCl(Ph)(PPh3 )2] giving the neutral nickel( Ⅱ ) complex(4) {[[O- (3-Cy-clohexanyl) (5 CH3 )C6 H2 -ortho-C (H) = N-2,6-C6 H3- (i Pr)2 ] Ni ( Ph3 P) ( Ph )]2CH2 }. All intermediates and neutral complex (4) were characterized by GC-MS,^1H NMR. The complex(4) activated by AI(i-Bu)3 can catalyze MMA polymerization effectively. The effect of polymerization parameters, such as temperature, time, molar ratios of Al/Cat (4), and MMA/Cat(4) were studied in detail. At the polymerization conditions: Al/Cat(4)= 10; MMA/Cat(4)= 10003 60 ℃ ; 15 h, the conversion of MMA reached 69.9%, and the polydispersity of PMMA was 2.02.

关 键 词:邻环己基取代水杨醛亚胺 后过渡金属 双核中性镍催化剂 本体聚合 甲基丙烯酸甲酯 

分 类 号:O643.3[理学—物理化学] TQ211[理学—化学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象