Citation: You Yuan, Song-dong Ding, Yin-qiao Zhao, Yu-zhong Wang. Hydrolytic Degradation Behaviors of Poly(p-dioxanone) in Ambient Environments[J]. Chinese Journal of Polymer Science, ;2014, 32(12): 1678-1689. doi: 10.1007/s10118-014-1545-3 shu

Hydrolytic Degradation Behaviors of Poly(p-dioxanone) in Ambient Environments

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College of Chemistry, Center for Degradable and Flame-Retardant Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), Sichuan University, Chengdu 610064, China

Corresponding author: Song-dong Ding,
Received Date: 26 March 2014
Revised Date: 20 May 2014

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 51121001), High-Tech Research Development Program (No. 2012AA062904) and the Program for Changjiang Scholars and Innovative Research Teams in Universities of China (IRT 1026).

The effects of temperature and relative humidity on the hydrolytic degradation of poly(p-dioxanone) (PPDO) were investigated. The hydrolytic degradation behaviors were monitored by tracing the changes of water absorption, mechanical and crystalline properties, molecular weight and its distribution, surface morphologies, as well as infrared absorption peaks and hydrogen chemical shifts during the degradation. It is found that the water absorption increases whilst the intrinsic viscosity, tensile strength and elongation at break decrease as the temperature or relative humidity increases. With degradation time growing, the molecular weight drops and its distribution broadens. The crystallinity of PPDO has a tendency to increase at first and then to decrease, while the crystalline structure is not significantly changed. At the same time, some cracks are observed on the surface and keep growing and deepening. All results show that temperature plays more significant roles than relative humidity during the degradation. The analyses of Fourier transform infrared spectroscopy and hydrogen nuclear magnetic resonance spectroscopy reveal that the degradation of PPDO is a predominant hydrolysis of ester linkages.
- Poly(p-dioxanone),
- Hydrolytic degradation,
- Temperature,
- Relative humidity
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沈阳化工大学材料科学与工程学院沈阳 110142