| Issue |
MATEC Web Conf.
Volume 238, 2018
International Conference on Novel Functional Materials (ICNFM2018)
|
|
|---|---|---|
| Article Number | 04009 | |
| Number of page(s) | 5 | |
| Section | Biological Material and Process | |
| DOI | https://doi.org/10.1051/matecconf/201823804009 | |
| Published online | 26 November 2018 | |
Preparation and Properties of Polylactic Acid/Modified Starch/POE Degradation Materials
Yanching Institute of Technology, 065201 Sanhe, China
* Corresponding author: zxb_1015@163.com
Polylactic acid (PLA) / polyolefin elastomer (POE) / modified starch composites were prepared by melt blending. The composites were characterized by softening point, polarizing microscope, melt flow rate, tensile strength and degradation properties. The results showed that with the increase of modified starch and POE content, phase separation occurred between modified starch and PLA, and the tensile strength decreased compared with pure PLA. Modified starch could increase the crystallinity of PLA to increase the softening point and improve the thermal stability of PLA. When the modified starch and POE content were 15 and 20 parts respectively; the composite material has the best performance. At this time, the softening point was 75°C and the tensile strength could reach 47.7 MPa. The composite materials in different media showed the quality decreased with the prolongation of degradation time, especially in acidic and alkaline conditions, because the degradation rate of hydrolysis was accelerated.
© The Authors, published by EDP Sciences, 2018
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