Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 216, Issue 10, Pages 1120-1124Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201500050
Keywords
blending; melt-spinning; nanoparticles; polylactides; stereocomplexs
Categories
Funding
- National Natural Science Foundation of China [51003117, 51273207]
- Zhejiang Provincial Natural Science Foundation [Y4100517]
- Ningbo Municipal International Cooperation Project [2013D10002]
- Corbion Purac
Ask authors/readers for more resources
Nanostructures of stereocomplex polylactide (sc-PLA) are obtained and studied in poly(l-lactide) (PLLA) doped with a low amount of poly(d-lactide) (PDLA) during successive melt-quenching, extrusion, spinning, and drawing processes corresponding to quiescent, shear flow, elongational flow, and tensioned annealing conditions, respectively. Nanogranules of predominantly sc-PLA are initially formed with rapid quenching in quiescent and shear flow, which developed into microspheres with slow quenching and uniform nanofibrils in elongational flow. While only amorphous or the -form PLLA is formed with the quenched melts and macroscopic fibers, the embedded nanogranules and nanofibrils are highly crystallized with the coexistence of sc-PLA and the -crystals. A 1D coalescence of nascent sc-nuclei into nanofibrils in elongational flow is preliminarily proposed to explain the structure evolution and the minor reinforcement of the nanofibrils on the macroscopic fibers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available