Study on composting and seawater degradation properties of diethylene glycol-modified poly(butylene succinate) copolyesters

Abstract The marine pollution caused by traditional plastics is becoming increasingly serious, and the fundamental way to solve this problem look for plastic substitutes that can degrade in environment. Herein, a series of high-molecular-weight poly(butylene succinate- co -diethylene glycol succinate) (PBDS) was obtained introduction low-cost diethylene (DEG) into main chain (PBS), which aimed obtain materials be degraded both compost seawater. research showed increase DEG content reduced crystallinity copolyester, led decrease mechanical strength thermal properties copolyester certain extent. Meanwhile, hydrophilicity improved degradation rate material. Compared with PBS, PBDS exhibited not only faster composting but also