標題: STUDIES ON CO[POLY(ETHYLENE TEREPHTHALATE-P-OXYBENZOATE)] THERMOTROPIC COPOLYESTER - SEQUENCE DISTRIBUTION EVALUATED FROM TSC MEASUREMENTS
作者: SHINN, TH
LIN, CC
LIN, DC
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: CO[POLY(ETHYLENE TEREPHTHALATE-P-ONYBENZOATE)];THERMALLY STIMULATED CURRENT;SEQUENCE DISTRIBUTION
公開日期: 1-一月-1995
摘要: Relaxation!transition behaviours for copolyesters made from poly(ethylene terephthalate) (PET) and p-acetoxybenzoic acid (POB) have been characterized by thermally stimulated current (TSC) measurement. The sequence distribution, in terms of the degree of blockiness, in dual chemidomains of POB/PET copolyester is simulated from a model developed by us to predict the probability between block sequence and random sequence under a given composition and measuring condition. It is found that the degree of blockiness, a measure of sequence distribution, under the same polarization temperature generally increases with increasing POB content in the POB/PET copolyester. For copolyesters of the same composition, the degree of blockiness shows a large decrease after solid-state polymerization when high molecular weight PET is used, whereas it shows only a small decrease or an increase after solid-state polymerization when PET of lower molecular weight is used. It is concluded that the change in the degree of blockiness caused by the solid-state polymerization of copolyesters is dependent on the molecular weight of sequences of the PET moiety in the structure.
URI: http://dx.doi.org/10.1016/0032-3861(95)91315-X
http://hdl.handle.net/11536/2154
ISSN: 0032-3861
DOI: 10.1016/0032-3861(95)91315-X
期刊: POLYMER
Volume: 36
Issue: 2
起始頁: 283
結束頁: 289
顯示於類別:期刊論文


文件中的檔案:

  1. A1995QE17100008.pdf