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作 者:卢伟[1] 李雅明[1] 杨钢[1] 李启成[1] 肖汉文[1] 叶正涛[1]
机构地区:[1]湖北大学材料科学与工程学院,武汉430062
出 处:《胶体与聚合物》2008年第2期19-21,共3页Chinese Journal of Colloid & Polymer
摘 要:采用熔融共混法制备聚乳酸(PLA)/己二酸-对苯二甲酸-丁二酯共聚物(PBAT)/乙酰化柠檬酸三丁酯(ATBC)共混物。用差示扫描量热仪(DSC)和偏光显微镜(POM)分析了乙酰化柠檬酸三丁酯(ATBC)对共混物PLA结晶行为的影响。结果表明当PLA/PBAT含量为80/20(质量比)时,随着ATBC量的增加,PLA的T_g、T_c和T_m降低,结晶度提高,球晶生长速率增加。Poly(lactic acid) (PLA), poly(butylene adipate-co-terephthalate) (PBAT) and tributyl o-acetylcitrate (ATBC) blends were prepared by means of melting blending. Effect oftributyl o-acetylcitrate loading on the crystallization behaviors of PLA in the blends was studied by means of differential scanning calorimetry (DSC) and polarized optical micrograph (POM). The results showed that the glass transition temperature (Tg), the cold crystalline temperature (Tc) and the melting point (Tm) of PLA in the blends decreased, but the degree of crystallinity and the spherulitic growth rate of PLA in the blends increased with increasing of ATBC loading when the ratio of PLA to PBAT (mass ratio) in the blends was 80/20.
关 键 词:聚乳酸 己二酸-对苯二甲酸-丁二酯共聚物 乙酰化柠檬酸三丁酯 结晶行为
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