- 作者: 蔡宏斌 ; 黎孝芹 ; 余福熙
- 作者服務機構: 工業技術研究院化學工業研究所
- 中文摘要: The block copolyesters of poly(butylene terephthalate) (PBT) and poly(butylene adipate) (PBA) were prepared by a novel two-stage method. In the first stage, high molecular weight PBT and PBA were melt mixed in the presence of 1,4-butanediol at 275. degree.C. In the second stage, vacuum was applied to raise the molecular weight. The extent of transesterification was controlled by the proportion of 1,4-butanediol. The sequence distribution and the thermal properties of the block copolyesters were characterized by NMR and DSC respectively.
- 英文摘要: --
- 中文關鍵字: Block Copolyester; Transesterification; Thermal Property; Sequence Length; Degree Of Randomness; Synthesis
- 英文關鍵字: 嵌段共聚酯;酯交換作用;熱性質;序列長度;隨意度;合成