• 作者： Tsai, Hong-Bing; Lee, Chyun; Chang, Nien-Shiet al.
• 中文摘要： 一系列聚(對氧基苯甲酸酯-共-對苯 間苯二甲酸酯)由對乙醯氧基苯甲酸,對苯 二醋酸酯及間苯二甲酸以熔融聚縮合製得。其 HBA含量為0-70mole%。所得聚合體粉碎以後,在260-280.degree.C,0.5mmHg之真空度下進行固態聚合。共聚酯之分子量隨固態聚合時間之增長而增高。組成不同時,固態聚合對其分子量之影響亦不同,主要是由於不同結晶度所造成。固態聚合條件亦類似退火條件,因此,在固態聚合之後,共聚酯之熱性質及結晶度有所改變。當固態聚合時間增長時,轉變溫度及結晶度隨著提高。
• 英文摘要： A series of poly(p-oxybenzoate-co-p-phenylene isophthalate)s with HBA content from 0 to 70 mole% were prepared by melt polycondensation of pacetoxybenzoic acid, p-phenylene diacetate, and isophthalic acid. The polymer products were ground and solid state polymerized at 260-280.degree.C under vacuum (0.5mmHg) for various time intervals. The molecular weight of the copolyesters was increased as the solid state polymerization time increased. The different influence of solid state polymerization on the molecular weight of different composition of copolyester was described as the effect of different crystallinity. The solid state polymerization process also behaved as an annealing condition. The thermal properties and crystallinity were changed after solid state polymerization. As the solid state polymerization time increased, both the transition temperature(s) and crystallinity increased accordingly.
• 中文關鍵字： 共聚酯; 固態聚合; 退火; 熱性質; 轉變溫度
• 英文關鍵字： Copolyesters; Solid State Polymerization; Annealing; Thermal Properties; Transition Temperature