Abstract
Polylactide (PLA), poly(butylene succinate) (PBS) and blends thereof have been researched in the last two decades due to their commercial availability and the upcoming requirements for using bio-based chemical building blocks. Blends consisting of PLA and PBS offer specific material properties. However, their thermodynamically favored biphasic composition often restricts their applications. Many approaches have been taken to achieve better compatibility for tailored and improved material properties. This review focuses on the modification of PLA/PBS blends in the timeframe from 2007 to early 2019. Firstly, neat polymers of PLA and PBS are introduced in respect of their origin, their chemical structure, thermal and mechanical properties. Secondly, recent studies for improving blend properties are reviewed mainly under the focus of the toughness modification using methods including simple blending, plasticization, reactive compatibilization, and copolymerization. Thirdly, we follow up by reviewing the effect of PBS addition, stereocomplexation, nucleation, and processing parameters on the crystallization of PLA. Next, the biodegradation and disintegration of PLA/PBS blends are summarized regarding the European and International Standards, influencing factors, and degradation mechanisms. Furthermore, the recycling and application potential of the blends are outlined.
Highlights
In recent years, the need for a change in the raw material economy has become significant, due to increasing concerns about limited fossil resources and environmental issues
This review focuses on the modification of PLA/poly(butylene succinate) (PBS) blends in the timeframe from 2007 to early 2019
Less than 1 wt% benzoyl peroxide (BPO) and dicumyl peroxide (DCP) improve the PLA/PBS (80/20) blend toughness up to approximately 400%.The second most effective modification method is copolymerization, which represents a non-reactive compatibilization method
Summary
The need for a change in the raw material economy has become significant, due to increasing concerns about limited fossil resources and environmental issues. Polylactide (PLA), known as poly(lactic acid) is a polymer derived from renewable resources It is produced, besides some smaller plants, in two world-scale plants by NatureWorks. PBS has a better eco-efficiency, depending on and Corporation with a production capacity of around. A lot investigation been carriedsome out with the aim of focused improving options degradation behavior of PLA/PBS blends. To the of best knowledge of the authors, no comprehensive review has been written degradation behavior the toughness and crystallization of PLA using PBS. Some studies have focused on the covering the research on theknowledge modification and authors, degradation of PLA/PBS blends. That is the reason for to the of best of the no comprehensive review has been written degradation behavior composing a systematic summary in the present paper. Thathas is the reason for to the on best of and the authors, no comprehensive review been written composing a systematic summary in the present paper
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