Photodegradation behavior of poly(butylene succinate-co-butylene adipate)/ZnO nanocomposites

作者：Zhang, Yang; Xu, Jun; Guo, Baohua^*

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2016, 489: 173-181.

DOI：10.1016/j.colsurfa.2015.10.038

• Biodegradable polymer
• Poly(butylene succinate-co-butylene adipate)
• ZnO
• Nanocomposites
• Photodegradation behavior

The photodegradation of PBSA and PBSA/ZnO nanocomposites with different ZnO loadings were studied in this paper. The PBSA/ZnO nanocomposites were prepared by melt-compounding process and the ZnO dispersion state within the PBSA matrix was analyzed by TEM. The reduction of molecular weight of PBSA nanocomposites is lower than that of the neat PBSA, which indicates more chain scission occured in neat PBSA. The chemical structure changes characterized by FTIR and PGC-MS showed that ZnO nanopartides can stabilize the PBSA matrix. Carbonyl index and hydroxyl index of PBSA grew more significantly than PBSA nanocomposites. More degradation products accumulated in PBSA samples than in the PBSA nanocomposite samples. Thermal properties analyzed by DSC revealed a decrease of crystallization temperature in all samples, which is due to the formation of short chains after irradiation. In addition, the small fragments could recrystallize and increase the crystallinity. SEM images of sample surfaces revealed that PBSA sample had severer damages on surface than PBSA/ZnO nanocompo site s. These results demonstrate that ZnO nanoparticles can hinder the photodegradation of PBSA.

• 出版日期2016-1-20
• 单位清华大学