高强抗蠕变水性抗菌聚氨酯及其生物降解性能

作者：Wang Zhaofei; Fan Kangxin; Yao Wansheng; Zhou Yiyang; Dong Xiaoyu; Niu Yujie; Dong Yong; Zhang Baiyao; Zhang Guobing; Ding Yunsheng^*

来源：Polymer Materials Science and Engineering, 2023, 39(1): 18-24.

DOI：10.16865/j.cnki.1000-7555.2022.0278

• antibacterial
• biodegradable
• creep resistance
• high strength
• polylactic acid polyols
• waterborne polyurethane

The prepolymers of waterborne polyurethane (PLA-WPU-C-pre) were synthesized by using IPDI, PLA-OH and PTMG as monomer, DPA and BDO as chain extender. Then the prepolymers of PLA-WPU were emulsified by bubbling with carbon dioxide (CO2) into water. In further, the 1,6-diiodohexane was added into the PLA-WPU emulsions for crosslinking, and then the mixtures are pouring into a PTFE mold, the films with crosslinking structure (PLA- WPU- C) were obtained after curing. The effects of PLA- based polyol content, cross- linked structure and annealing time on the mechanical properties, antibacterial properties and biodegradability of PLA- WPU- C were investigated. The results show that PLA-WPU-C has good biodegradation and antibacterial properties, and the crosslinked PLA-WPU has better mechanical properties (27.8 MPa and 384%) when the mole ratio of PTMG to PLA-OH is 3:1 and the annealing time is 1 h. ? 2023 Chengdu University of Science and Technology.

• 单位
  合肥工业大学