Compostability and Ecotoxicity of Poly(lactic acid) and Starch Blends

Yositar Rudeekit; Pongsaks Siriyota; Parichai Intaraksa; P. Chaiwutthinan; Monchait Tajan; Thanawadee Leejarkpai

doi:10.4028/www.scientific.net/AMR.506.323

Paper Titles

Physical Stabilizing Effect of Biopolymers on Solid Dispersions Containing Indomethacin and Polyethylene Glycol
p.307

Development of Biodegradable Films Based on Durian Seed Starch
p.311

Design and Preparation of Synthetic Hydrogels by Redox Initiation via Free Radical Polymerisation for Biomedical Use as Wound Dressings
p.315

Effect of Zein Concentration on the Formation of Pectin-Zein Complexes
p.319

Compostability and Ecotoxicity of Poly(lactic acid) and Starch Blends
p.323

The Ultimate Biodegradation of the Starch Based Biodegradable Plastics
p.327

Study of the Disintegration of Poly (butylene adipate-co-terephthalate) and Starch Co-Extruded Materials
p.331

In Situ Crosslinkable Thiolated Chitosan as Scaffold Material for Tissue Engineering
p.335

Development of Soaps Containing Betel Nut Extract
p.339

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 506Compostability and Ecotoxicity of Poly(lactic...

Compostability and Ecotoxicity of Poly(lactic acid) and Starch Blends

Abstract:

This paper revealed the compostability of poly (lactic acid) (PLA) and PLA/starch blends with various amounts of starch contents. The results showed that the ultimate aerobic biodegradation under controlled composting conditions of PLA and PLA/starch with 30, 50 and 70 wt% starch contents were 83.43%, 84.28%, 88.04% and 95.83%, respectively. Under the same testing conditions, the biodegradation of cellulose, as a positive material, was 84.89%. In the disintegration testing, the tested materials were completely biodegraded and no residuals were observed through visual inspection after 30 days. In ecotoxicity test, the rate of germination and plant growth of monocotyledon and dicotyledon on the resulting compost were no significant different when compared to blank compost under. It can be concluded that the PLA and PLA/starch blends were clearly safe for the ecosystem. Furthermore, these materials were biodegradable and compostable materials as they pass all requirements of ISO 17088.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 506)

Pages:

323-326

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.506.323

Citation:

Cite this paper

Online since:

April 2012

Authors:

Yositar Rudeekit, Pongsaks Siriyota, Parichai Intaraksa, P. Chaiwutthinan, Monchait Tajan, Thanawadee Leejarkpai

Keywords:

Biodegradable Plastic, Composting, Ecotoxicity, Poly(lactic acid) (PLA), Starch

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] ISO 17088. Specifications for compostable plastics (2008).

Google Scholar

[2] ISO 14855-1. Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions - Method by analysis of evolved carbon dioxide - Part 1: General method. (2005).

DOI: 10.3403/30239672

Google Scholar

[3] ISO 20200. Plastics - Determination of the degree of disintegration of plastic materials under simulated composting conditions in a laboratory-scale test. (2004).

DOI: 10.3403/30061453u

Google Scholar

[4] OECD 208. OECD guideline for the testing of chemicals. (1984).

Google Scholar

[5] G. Kale, R. Auras, S.P. Singh, R. Narayan: J. polym. test. Vol. 26 (2007), p.1055.

Google Scholar