Effect of Solvent Combination on Electrospun Stereocomplex Polylactic Acid Nanofiber Properties

被引：4
作者：
Septiyanti, Melati [1 ]
Septevani, Athanasia Amanda [1 ]
Ghozali, Muhammad [1 ]
Fahmiati, Sri [1 ]
Triwulandari, Evi [1 ]
Restu, Witta Kartika [1 ]
Meliana, Yenny [1 ]
Matsumoto, Takuya [2 ]
Nishino, Takashi [2 ]
机构：
[1] Indonesian Inst Sci, Res Ctr Chem, South Tangerang 15314, Banten, Indonesia
[2] Kobe Univ, Grad Sch Engn, Dept Chem Sci & Engn, Kobe, Hyogo, Japan
来源：
MACROMOLECULAR SYMPOSIA | 2020年 / 391卷 / 01期
关键词：
biopolymers; electrospinning; nanocomposite; polylactic acid; polymer complexes; BEHAVIOR; POLYMER; FIBERS; DEGRADATION; MORPHOLOGY; SYSTEM; PLLA; CELL;
D O I：
10.1002/masy.201900134
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polylactic acid (PLA) has been known as bio-based polymer for the development of bioplastic with promising properties such as biodegradable, biocompatible, non-toxic, and renewable. However, its low thermal properties have limited its applications. Thus, in this study stereocomplex PLA (sc-PLA) is investigated with the aim to improve thermal properties by mixing poly L-lactic acid (PLLA) and poly D-lactic acid (PDLA) in solution blend combination via electrospinning. The electrospun sc-PLA fiber is prepared in combination of chloroform (CHCl3),N,N-dimethylformamide, and hexafluoroisopropanol (HFIP). The effect of solvents in the properties of sc-PLA is analyzed using Fourier-transform infrared spectroscopy and X-ray diffraction (XRD) to understand chemical interaction between PLLA and PDLA. Differential scanning calorimetry and thermo gravimetric analyzer is used to understand the thermal properties of sc-PLA. It is found that the optimum solvent combination for sc-PLA nanofiber is CHCl3/HFIP 9:1 with the smallest nanofiber diameter 39.7 nm and the melting point improved by 47 degrees C compared with neat PLA due to stereocomplexation between PLLA and PDLA.
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页数：5
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