摘要
采用双螺杆挤出机液体进料工艺,制备了聚乳酸/柠檬酸三丁酯(PLA/TBC)固-液共混材料,表征了其性能。结果表明:双螺杆挤出机液体进料工艺能够精确控制TBC在PLA中的质量分数;傅里叶红外光谱仪微观结构表征了2877cm-1特征峰的出现、羟基伸缩振动峰红移,证明TBC对PLA起到了增塑作用;当TBC含量为16%(质量分数)时共混材料从脆性材料转变为韧性材料;降解实验显示,这种共混薄膜在6个月内性能基本消失,轻微受力时薄膜粉碎。
PLA/TBC solid-liquid blend materials were prepared through liquid feeding process in twin-screw ex- truder and its performance was characterized. Test results showed that the twin-screw extruder liquid feeding process can precisely control the mass fraction of the PLA in TBC score. 2877 cm^-1 the characteristic peak and the emergence of -OH telescopic vibrating peaks red-shift was founded in FT-IR spectrometer inspection, which proved that TBC has the plastic role; when TBC content w= 16%, its mechanical performance of materi- als change from brittle into ductile material; through the degradation test, the mechanical properties of PLA/ TBC blend materials disappearance within 180 days and the film changes into pieces form by slightly power.
出处
《包装工程》
CAS
CSCD
北大核心
2012年第17期15-18,共4页
Packaging Engineering
关键词
聚乳酸
柠檬酸三丁酯
固-液共混材料
polylactide acid
tributyl citrate
solid-liquid blend materials
