Progress of Disintegration of Polylactide (PLA)/Poly(Butylene Succinate) (PBS) Blends Containing Talc and Chalk Inorganic Fillers under Industrial Composting Conditions
| Autor: | Sengül Tolga, Stephan Kabasci, Mona Duhme |
|---|---|
| Přispěvatelé: | Publica |
| Rok vydání: | 2020 |
| Předmět: |
Polymilchsäure (PLA)
Materials science Polymers and Plastics Talc Article lcsh:QD241-441 chemistry.chemical_compound Inorganic filler Differential scanning calorimetry lcsh:Organic chemistry medicine PLA / PBS blend poly(butylene succinate) Degradation process PBS Tensile testing industrial composting conditions biodegradation behavior disintegration technology industry and agriculture inorganic filler General Chemistry polymer blend blend Lactic acid Polybutylene succinate Chemical engineering chemistry PLA poly(lactic acid) medicine.drug |
| Zdroj: | Polymers Polymers, Vol 13, Iss 10, p 10 (2021) Volume 13 Issue 1 |
| ISSN: | 2073-4360 |
| Popis: | Biodegradable plastics are experiencing increasing demand, in particular because of said property. This also applies to the two biopolyesters poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) covered in this study. Both are proven to be biodegradable under industrial composting conditions. This study presents the influence of mineral fillers on the disintegration process of PLA/PBS blend systems under such conditions. Chalk and talc were used as fillers in PLA/PBS (7:3) blend systems. In addition, unfilled PLA/PBS (7:3/3:7) blend systems were considered. Microscopic images, differential scanning calorimetry and tensile test measurements were used in addition to measuring mass loss of the specimen to characterize the progress of disintegration. The mineral fillers used influence the disintegration behavior of PLA/PBS blends under industrial composting conditions. In general, talc leads to lower and chalk to higher disintegration rates. This effect is in line with the measured decrease in mechanical properties and melting enthalpies. The degrees of disintegration almost linearly correlate with specimen thickness, while different surface textures showed no clear effects. Thus, we conclude that disintegration in a PLA/PBS system proceeds as a bulk erosion process. Using fillers to control the degradation process is generally regarded as possible. |
| Databáze: | OpenAIRE |
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