On the Nanoscale Mapping of the Mechanical and Piezoelectric Properties of Poly (L-Lactic Acid) Electrospun Nanofibers

被引：22

作者：

Nguyen Thai Cuong ^{[1
,2
]}

Barrau, Sophie ^{[2
]}

Dufay, Malo ^{[2
]}

Tabary, Nicolas ^{[2
]}

Da Costa, Antonio ^{[3
]}

Ferri, Anthony ^{[3
]}

Lazzaroni, Roberto ^{[1
]}

Raquez, Jean-Marie ^{[4
]}

Leclere, Philippe ^{[1
]}

机构：

[1] Univ Mons UMONS, Ctr Innovat & Res Mat & Polymers CIRMAP, Lab Chem Novel Mat, B-7000 Mons, Belgium

[2] Univ Lille, Unite Mat & Transformat UMET, CNRS, Sci & Technol,ENSCL,INRA,UMR 8207, F-59655 Villeneuve Dascq, France

[3] Univ Lille, Univ Artois, CNRS, Cent Lille,ENSCL,UMR 8181,UCCS, F-62300 Lens, France

[4] Univ Mons UMONS, Ctr Innovat & Res Mat & Polymers CIRMAP, Lab Polymer & Composite Mat, B-7000 Mons, Belgium

来源：

APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 02期

关键词：

electrospinning; nanofibers; peakforce quantitative nanomechanical property mapping; piezoresponse force microscopy; intermodulation AFM; contact mechanics; poly (L-lactic acid); VIBRATIONAL ANALYSIS; TENSILE PROPERTIES; ALPHA-FORM; FIBERS; THIN; TEMPERATURE; MORPHOLOGY; CRYSTALS; ADHESION; BEHAVIOR;

D O I：

10.3390/app10020652

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of the post-annealing process on different properties of poly (L-lactic acid) (PLLA) nanofibers has been investigated in view of their use in energy-harvesting devices. Polymeric PLLA nanofibers were prepared by using electrospinning and then were thermally treated above their glass transition. A detailed comparison between as-spun (amorphous) and annealed (semi-crystalline) samples was performed in terms of the crystallinity, morphology and mechanical as well as piezoelectric properties using a multi-technique approach combining DSC, XRD, FTIR, and AFM measurements. A significant increase in the crystallinity of PLLA nanofibers has been observed after the post-annealing process, together with a major improvement of the mechanical and piezoelectric properties.

引用

页数：16

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