Effect of stretching speed on morphologies and properties of in situ microfibrillar POE/PLA composites

被引：4
|
作者：
Sun, Jing [1 ,2 ]
Huang, Anrong [1 ,2 ]
Luo, Shanshan [1 ]
Shi, Min [1 ]
Luo, Heng [1 ]
Sui, Yuanming [3 ]
机构：
[1] Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang, Guizhou, Peoples R China
[2] Guizhou Mat Ind Technol Inst, Platinum Ave Sci City, Guiyang 550014, Guizhou, Peoples R China
[3] Inst Supervis & Inspect Prod Qual Guizhou Prov, Guiyang, Peoples R China
来源：
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS | 2022年 / 35卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Ethylene-octene copolymer; in situ microfibrillar composites; poly(lactic acid); morphology; rheological properties; MECHANICAL-PROPERTIES; DRAW RATIO; OCTENE; NANOCOMPOSITES; ELASTOMER; PERFORMANCE; BEHAVIOR; BLENDS; SILICA;
D O I：
10.1177/0892705720939177
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
In situ microfibrillar ethylene-octene copolymer (POE)/poly(lactic acid) (PLA) composites (MFCs) with different phase morphologies were prepared by controlling the stretching speed and maintaining the weight ratio of POE/PLA of 80/20. Four different stretching speeds were employed to study the effect of PLA microfibrillar morphology on tensile, crystalline, and rheological properties of MFCs. Scanning electron microscopic images revealed that the morphology of PLA phase was strongly influenced by stretching speed. MFCs with highest aspect ratio and smaller diameter of PLA microfibrils were obtained with a stretching speed of 60 rpm. The PLA microfibrils with high aspect ratio had the best reinforcement effect on MFCs. The dynamic rheological properties indicated that the MFCs achieved higher storage modulus and loss modulus at the stretching speed of 60 rpm.
引用
收藏
页码：1576 / 1588
页数：13
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