几种无定型聚芳醚砜(酮)的成环解聚及产物的开环聚合  

Cyclo-depolymerization of Several Amorphous Aromatic Polyether Sulfone (Ketone)s and Ring-opening Polymerization of the Products

作　　者：王红华[1] 罗发亮[1] 薄淑琴[1] 陈天禄[1] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理与化学重点实验室,长春130022

出　　处：《化学学报》2004年第14期1344-1348,J005,共6页Acta Chimica Sinica

基　　金：国家自然科学基金 (No .2 0 0 840 0 1 )资助项目

摘　　要：几种线性高分子量的无定型聚芳醚砜 (酮 )在非质子极性溶剂二甲基乙酰胺 (DMAc)和二甲基甲酰胺 (DMF)中 ,以氟化铯 (CsF)为催化剂进行解聚成环 ,所得环状低聚物由凝胶渗透色谱 (GPC)、高效液相色谱 (HPLC)和激光质谱 (MALDI TOF MS)确认 ,其中酚酞聚醚砜 (PES C)和酚酞聚醚酮 (PEK C)的解聚成环率分别高达 86.3 %和 87.9% .讨论了影响成环率的各种因素 .环状产物又在阴离子引发剂联苯双酚钾的作用下进行开环聚合重新得到高分子量的线性产物 .Three amorphous aromatic polyether sulfone(ketone)s with different structures underwent a cyclo-depolymerization reaction using CsF as the catalyst in dipolar aprotic solvents such as DMAc and DMF to afford corresponding cyclic oligomer products. The results were confirmed by GPC, HPLC and MALDI-TOF-MS. The yields of phenolphthalein polyether sulfane (PES-C) and phenolphthalein polyether ketone (PEK-C) cyclics reach as high as 86.3% and 87.9% respectively. Relative factors that influence the yields of cyclics were discussed. High molecular weight linear products were regenerated after the ring-opening polymerization of the cyclo-products using potassium phenoxide as initiator.

关 键 词：无定型聚芳醚砜 成环解聚法 开环聚合 芳香环状低聚物 无定型聚芳醚酮 

分 类 号：O631.5[理学—高分子化学]