镧配位催化N-十八烷基马来酰亚胺均聚合  

POLYMERIZATION OF N-OCTADECYLMALEIMIDE WITH LANTHANUM RARE EARTH COORDINATION CATALYST

作　　者：卢彦兵[1] 孙维林[2] 沈之荃[2] 

机构地区：[1]湖南大学高分子研究所,长沙410082 [2]浙江大学高分子系,杭州310027

出　　处：《高分子学报》2005年第6期924-928,共5页Acta Polymerica Sinica

摘　　要：Polymerization of N-Octadecylmaleimide was studied using rare earth coordination catalysts in toluene.The dependence of polymerization on molar ratio of catalyst components,different rare earth elements,catalyst concentration,monomer concentration,polymerization time and polymerization temperature was investigated in detail.The results showed that the rare earth catalysts were favorable catalysts for the polymerization of N-Octadecylmaleimide.A suitable condition for the polymerization was [La(P507)3]= 1×10-2?mol·L-1;（[Al（i-Bu）3]）=8.0×(10-2?mol·L-1);[NODMI]=5.0×(10-1?mol·L-1);60℃;6?h.Characterization of the polymer obtained showed that polymerization of N-Octadecylmaleimide proceeded via opening the double bond in the monomer molecules.The heat-resistant property of the polymer was investigated primarily.The polymer showed excellent thermal stability.The thermal decomposition of the polymer proceeded via a one-step reaction and no substantial weight loss was observed below 350℃.The initial decomposition temperature(Tini) was 360℃,the maximum decomposition temperature(Tmax) was 441℃,and the residual weight at 500℃ was about（3.4?wt%）.Polymerization of N-Octadecylmaleimide was studied using rare earth coordination catalysts in toluene. The dependence of polymerization on molar ratio of catalyst components, different rare earth elements, catalyst concentration, monomer concentration, polymerization time and polymerization temperature was investigated in detail. The results showed that the rare earth catalysts were favorable catalysts for the polymerization of N- Octadecylmaleimide. A suitable condition for the polymerization was [La（P507 ）3 ] = 1 × 10^-2 mol· L^-1; [ A1 （ i- Bu） 3 ] = 8.0 × 10^- 2 mol· L^- 1 ; [ NODMI ] = 5.0 × 10^-1 mol· L^- 1 ; 60 ℃ ; 6 h. Characterization of the polymer obtained showed that polymerization of N-Octadecylmaleimide proceeded via opening the double bond in the monomer molecules. The heat-resistant property of the polymer was investigated primarily. The polymer showed excellent thermal stability. The thermal decomposition of the polymer proceeded via a one-step reaction and no substantial weight loss was observed below 350℃ . The initial decomposition temperature （ Tini ） was 360℃ , the maximum decomposition temperature （ Tmax ） was 441℃ , and the residual weight at 500℃ was about 3.4 wt% .

关 键 词：稀土配位催化剂 N'-十八烷基马来酰亚胺 聚合反应 耐热高分子 

分 类 号：TQ316.32[化学工程—高聚物工业]