Journal
POLYMER REVIEWS
Volume 61, Issue 3, Pages 493-519Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15583724.2020.1855194
Keywords
Polylactide; poly(lactic acid); crosslinking; bioelastomers; peroxides
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Funding
- National Science Centre in Poland [2018/31/B/ST8/01969]
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Researchers are interested in bioderived polylactide (PLA) as a replacement for petroleum-based plastics due to its mechanical properties, degradability, and biocompatibility for biomedical applications. The literature reflects this strong interest in PLA, with studies on crosslinking methods to modify its properties and improve its performance for various applications.
The ongoing interest of researchers in bioderived polylactide (PLA) is due to the current tendency to replace petroleum-based plastics with polymers from renewable resources. Polylactide fits this trend because of its mechanical properties resembling those of some petroleum-based polymers commonly applied in daily life and because of its degradability. Added value is the excellent biocompatibility of PLA thanks to which it has found an application in biomedicine. This great interest in polylactide is reflected in the literature. Crosslinking of polylactide was also studied by many authors as an easy method of the improvement and the modification of its properties (thermal, mechanical, rheological, degradability) according to requirements of existing or possible applications. In the present review, the examples of polylactide and its copolymers crosslinking by chemical approaches described in the literature are presented. Thus, chemical methods including peroxide-induced radical crosslinking and crosslinking by coupling of functional PLA prepolymers via condensation/addition reactions are discussed. The results of PLA modification and examples of new, interesting materials obtained via different crosslinking methods are shown.
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