Geonhee Han, Juhee Yoon, Jiho Hwang, Changsuk Lee, Eunhye Lee, Kichull Yoon, Hyo Won Kwak, Hyoung-Joon Jin
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Promoted biodegradation behavior of poly(L-lactic acid) in seawater conditions through blending amorphous polyhydroxyalkanoate
This study investigates the biodegradation behavior of a blend of poly(L-lactic acid) (PLLA) and amorphous polyhydroxyalkanoate (aPHA) (50:50 wt%) under seawater conditions for 12 weeks at 30 °C. The results revealed that the inclusion of aPHA in the blend enhanced the biodegradation of PLLA. The average molecular weight analysis indicated that the blend underwent homogeneous degradation primarily through exo-chain scission. Morphological changes observed via scanning electron microscopy demonstrated that aPHA first underwent decomposition in the blend, creating channels within PLLA that enhanced water and microorganism contact and promoted PLLA hydrolysis. The release of low-molecular-weight acids from the aPHA decomposition further facilitated PLLA hydrolysis.
Graphical abstract
The graph depicts fluctuations in the weight-average molecular weight of PLLA, the PLLA/aPHA blend, and aPHA throughout the biodegradation period under seawater conditions.
期刊介绍：
Original research on all aspects of polymer science, engineering and technology, including nanotechnology
Presents original research articles on all aspects of polymer science, engineering and technology
Coverage extends to such topics as nanotechnology, biotechnology and information technology
The English-language journal of the Polymer Society of Korea
Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.
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