期刊
POLYMERS
卷 13, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/polym13010010
关键词
poly(lactic acid); PLA; poly(butylene succinate); PBS; blend; inorganic filler; biodegradation behavior; disintegration; industrial composting conditions
资金
- Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT
This study investigates the disintegration process of biodegradable plastics PLA and PBS under industrial composting conditions, finding that mineral fillers influence the disintegration behavior of PLA/PBS blends, with talc leading to lower and chalk to higher disintegration rates. The degrees of disintegration almost linearly correlate with specimen thickness.
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据