High-performance polymer alloys of polybenzoxazine and bismaleimide
- 作者：Tsutomu Takeichi ; Yuki Saito ; Tarek Agag ; Hiroyuki Muto ; Takehiro Kawauchi
- 关键词：Polymer alloy ; Polybenzoxazine ; Bismaleimide
- 刊名：Polymer
- 出版年：2008
- 期刊代码：83_00323861
- 类别：ms
- 出版时间：3 March 2008
- 卷：49
- 期：5
- 页码：1173-1179
- 文件大小：608 K
摘要
Two series of high-performance polymer alloys were prepared by mixing typical benzoxine monomers, 3-phenyl-3,4-dihydro-2H-1,3-benzoxazine (P-a) or 6,6-(1-methylethyliden)-bis-(3,4-dihydro-3-phenyl-2H-1,3-benzoxazine) (B-a), with a typical bismaleimide, 4,4-bismaleimidodiphenyl methane by various ratios followed by thermal treatment up to 240 °C. DSC and IR of the alloys were examined to follow the curing reaction. These analyses showed that the obtained polymer alloys are AB co-cross-linked polymer networks through the formation of ether linkage between the hydroxyl group of polybenoxazine and the double bond of bismaleimide. Viscoelastic analysis and softening temperature measurement revealed that the polymer alloys have much higher glass transition temperatures than those of each homopolymer. The thermal stability also increased with the increase of bismaleimide content as evidenced by TGA.