Accelerated Biodegradation of PLA Nonwovens in Soil Bacterial Suspensions

Peng Zhang; Hai Xian Ye; Rui Tian Zhu; Zhi Cheng Zhan; Xiao Shan Lin; Yu Rong Yan

doi:10.4028/www.scientific.net/AMR.852.797

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Accelerated Biodegradation of PLA Nonwovens in Soil Bacterial Suspensions
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 852Accelerated Biodegradation of PLA Nonwovens in...

Accelerated Biodegradation of PLA Nonwovens in Soil Bacterial Suspensions

Abstract:

Bio-based biodegradable materials like poly (lactic acid), PLA has been using in many field in different forms due to its advantages in facing greenhouse gas emission. Long-term degradation behavior in nature soil is not a good way to evaluate the biodegradability of PLA, an accelerated biodegradation of PLA in soil bacterial suspensions was carried out under controlled laboratory conditions. The degradation behavior of PLA nonwovens with basic weight of 80g/m²and 23g/m² were studied using mechanical testing, SEM and FTIR analysis. Results showed that an anaerobic biodegradation was found during the degradation of PLA, no significant shifts or formation of new bands in FT-IR test. A number of cracks speared on fiber surface means biodegradation happened in amorphous part in fibers. Heavy basic weight nonwoven showed faster biodegradation than that of a light one.

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Periodical:

Advanced Materials Research (Volume 852)

Pages:

797-801

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.852.797

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Online since:

January 2014

Authors:

Peng Zhang, Hai Xian Ye, Rui Tian Zhu, Zhi Cheng Zhan, Xiao Shan Lin, Yu Rong Yan

Keywords:

Accelerated Biodegradation, PLA, Soil Bacterial Suspensions, Tensile Strength

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