采用双-(β-酮萘胺)镍(Ⅱ)为主催化剂,以甲基铝氧烷(MAO)为助催化剂,在甲苯溶剂中进行了苯乙烯聚合实验,并考察了聚合温度、Al/Ni摩尔比、单体浓度和聚合时间等因素对聚合反应的影响. 结果表明,双-(β-酮萘胺)镍(Ⅱ)/MAO催化剂显示出很高的催化活性,可催化苯乙烯聚合得到中等分子量和分子量分布较窄(Mw/Mn<1.6)的聚苯乙烯. 采用核磁共振氢谱、核磁共振碳谱、傅里叶变换红外光谱、差示扫描量热法和广角X射线衍射技术对聚合产物进行了表征. 结果表明,所得聚合物为无规聚苯乙烯.
参考文献
[1] | 许光学;刘水平;林尚安 .[J].催化学报,1998,19(03):251. |
[2] | 许光学 .[J].催化学报,1998,19(03):284. |
[3] | 祝方明.茂钛催化剂的苯乙烯间规聚合[J].高等学校化学学报,1997(12):2065. |
[4] | 阎卫东,周鼐,冯茹,贺大为,胡友良.单茚钛与β-二酮钛催化苯乙烯间规聚合反应的性能[J].催化学报,1999(06):671-674. |
[5] | Longo P;Grassi A;Oliva L;Ammendola P .[J].Makromolekulare Chemie,1990,191(01):237. |
[6] | Sun HM.;Shen Q.;Yang MJ. .New neutral Ni(II)- and Pd(II)-based initiators for polymerization of styrene[J].European Polymer Journal,2002(10):2045-2049. |
[7] | Sun HM.;Li WF.;Han XY.;Shen Q.;Zhang Y. .Indenyl nickel complexes: synthesis, characterization and styrene polymerization catalysis[J].Journal of Organometallic Chemistry,2003(1/2):132-137. |
[8] | Yang M J;Xu J L;Shen Zh Q .[J].Journal of Polymer Science Part A:Polymer Chemistry,1990,28(12):3231. |
[9] | Jiang L M;Shen Zh Q;Zhang Y F;Zhang F Y .[J].Journal of Polymer Science Part A:Polymer Chemistry,1996,34(17):3519. |
[10] | 刘丽;郑玉莲;龚志;景遐斌 .[J].应用化学,1997,14(05):115. |
[11] | Zhang Q Sh;Ni X F;Zhang Y F;Shen Zh Q .[J].Macromolecular Rapid Communications,2001,22(18):1493. |
[12] | He XH.;Yao YZ.;Luo X.;Zhang JK.;Liu YH.;Zhang L.;Wu Q. .Nickel(II) complexes bearing N,O-chelate ligands: Synthesis, solid-structure characterization, and reactivity toward the polymerization of polar monomer[J].Organometallics,2003(24):4952-4957. |
[13] | Cam D;Albizzati E;Cinquina P .[J].Makromolekulare Chemie,1990,191(07):1641. |
[14] | Ishihara N;Seimiya T;Kuramoto M;Uoi M .[J].Macromolecules,1986,19(09):2464. |
[15] | Brownstein S;Bywater S;Worsfold D J .[J].Journal of Physical Chemistry,1962,66(10):2067. |
[16] | Soga K;Monoi T .[J].Macromolecules,1989,22(09):3823. |
[17] | Ready TE.;Rausch MD.;Chien JCW. .ALKYL-SUBSTITUTED INDENYL TITANIUM PRECURSORS FOR SYNDIOSPECIFIC ZIEGLER-NATTA POLYMERIZATION OF STYRENE[J].Journal of Organometallic Chemistry,1996(1/2):21-28. |
[18] | Tomotsu N.;Newman TH.;Malanga MT.;Ishihara N. .Syndiospecific polymerization of styrene[J].Journal of molecular catalysis, A. Chemical,1998(1/3):167-190. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%