A well-defined poly(vinyl benzoxazine) obtained by selective free radical polymerization of vinyl group in bifunctional benzoxazine monomer

被引：15

作者：

Liu, Ying-Xuan ^{[1
]}

Ma, He-Ming ^{[1
]}

Liu, Yun ^{[2
]}

Qiu, Jin-Jun ^{[1
]}

Liu, Cheng-Mei ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Minist Educ, Coll Chem & Chem Engn, Key Lab Large Formal Battery Mat & Syst, Wuhan 430074, Peoples R China

[2] Jianghan Univ, Dept Chem & Environm Engn, Wuhan 434023, Peoples R China

来源：

POLYMER | 2016年 / 82卷

基金：

中国国家自然科学基金;

关键词：

Poly(vinyl benzoxazine); 3-(4-ethenylphenyl)-3,4-dihydro-2H-1,3-benzoxazine (VBOZN); Free radical polymerization; Copolymerization; LIVING ANIONIC-POLYMERIZATION; CURING KINETICS; N-PHENYLMALEIMIDE; COPOLYMERIZATION; POLYBENZOXAZINE; STYRENE; POLYMERS; MALEIMIDES; MODEL;

D O I：

10.1016/j.polymer.2015.11.036

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A heterobifunctional monomer, namely, 3-(4-ethenylphenyl)-3,4-dihydro-2H-1,3-benzoxazine (VBOZN), which contains both vinyl group and benzoxazine group, was successfully prepared by three-step method with high purity and satisfactory yield. The chemical structure of VBOZN was identified by NMR, FTIR and elemental analysis. VBOZN selectively underwent free radical polymerization initiated by azodiisobutyronitrile to obtain homopolymer P(VBOZN) with M-n 4960 and M-w 11700. The benzoxazine-containing linear P(VBOZN) has T-g about 112 degrees C and shows better thermal stability than that of polystyrene. The P(VBOZN) was cured by heating without any catalyst and the peak temperature assigned to cationic ring-opening polymerization of P(VBOZN) centered at 244 degrees C. The molecular weight of P(VBOZN) could be improved dramatically by copolymerization of VBOZO with N-phenylmaleimide. Both homopolymer and copolymers show high stability and theoretical limiting oxygen index are near 30. P(VBOZN) and copolymers are not only new kinds of well-defined multifunction polymers with the potential of postpolymerization and/or chemical modification, they are also novel intrinsic fire retarded polymers. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：32 / 39

页数：8

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[1] Synthesis and radical polymerization of bifunctional maleimides with different functional reactivities [J].