Polymerization of t-butyl acrylate using organoaluminum complexes and correlation between main-chain tacticity and glass transition temperature of the obtained polymers

被引：22

作者：

Liu, WH

Nakano, T

Okamoto, Y ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Appl Chem, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Grad Sch Engn, JRCII, JRCPP,Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

POLYMER | 2000年 / 41卷 / 12期

关键词：

poly(t-butyl acrylate); tacticity; class transition temperature;

D O I：

10.1016/S0032-3861(99)00669-2

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The polymerization of tert-butyl acrylate (tBA) was performed with triethylaluminum-(-)-sparteine, triethylaluminum-tertiary phosphine, triethylaluminum-n-BuLi and bis(2,6-di-tert-butyl-4-methylphenoxide)methylaluminium-t-BuLi complexes in toluene. The poly (tBA)s obtained with these initiators were rich in syndiotactic diad as observed by H-1 NMR analysis. On the basis of the triad and tetrad stereochemical information of the poly(tBA)s obtained using triethylaluminum-(-)-sparteine and triethylaluminum-n-BuLi, the polymerization reactions were found to obey Bernoullian statistics. Glass transition temperatures of the poly(tBA)s were measured by differential scanning calorimetry (DSC). A syndiotactic poly(tBA) (racemo (r) diad content: 65%) and an isotactic one (r = 19%) exhibited higher glass transition temperature (50 and 43 degrees C, respectively) than an atactic one (r = 50%, T-g = 21 degrees C). (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：4467 / 4472

页数：6

共 21 条

[1]

BARA A, 1998, POLYM J, V30, P304

[2]

Bovey F.A., 1996, NMR POLYM

[3] STEREOCHEMICAL STRUCTURE OF POLY(CYCLOHEXYL ACRYLATE) STUDIED BY ONE-DIMENSIONAL AND 2-DIMENSIONAL C-13-H-1 SPECTROSCOPY [J].