Transesterification and crystallization behavior of poly(butylene succinate)/poly(butylene terephthalate) block copolymers

التفاصيل البيبلوغرافية
العنوان:	Transesterification and crystallization behavior of poly(butylene succinate)/poly(butylene terephthalate) block copolymers
المؤلفون:	Park, Sang Soon, Chae, Seung Hun, Im, Seung Soon
المصدر:	Journal of Polymer Science Part A: Polymer Chemistry; 15 January 1998, Vol. 36 Issue: 1 p147-156, 10p
مستخلص:	The block copolymers of poly(butylene succinate) (PBS) and poly(butylene terephthalate) (PBT) were synthesized by melt processing for different times. The sequence distribution, thermal properties, and crystallization behavior were investigated over a wide range of compositions. For PBS/PBT block copolymers it was confirmed by statistical analysis from ¹H-NMR data that the degree of randomness (B) was below 1. The melting peak (Tm) gradually moved to lower temperature with increasing melt processing time. It can be seen that the transesterification between PBS and PBT leads to a random copolymer. From the X-ray diffraction diagrams, only the crystal structure of PBS appeared in the M1 copolymer (PBS 80 wt %) and that of PBT appeared in the M3 (PBS 50 wt %) to M5 (PBS 20 wt %) copolymers. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 147156, 1998
قاعدة البيانات:	Supplemental Index

الوصف
تدمد:	0887624X 10990518
DOI:	10.1002/(SICI)1099-0518(19980115)36:1<147::AID-POLA19>3.0.CO;2-J