SDT 650同步热分析质谱联用仪成果展示

Superhydrophobic melamine sponges with high performance in oil/organic  solvent sorption

（Author：Zhihao Dong , Wenzheng Feng , Chi Huang , Hongpeng Lin , Chunyan Jia ,  Changliang Ren）

Degradation behavior analysis

The degradation behavior of pristine MS and MS-4 were analyzed by  thermogravimetric analysis (TGA) under N2 atmosphere (Fig. 6). The  mass loss curve of MS-4 could be assigned #### three temperature  ranges. The first mass loss of ~ 6% at the temperature below 100 ℃ was  attributed to the evaporation of absorbed water in the sponges. The  second mass loss of ~ 27% within the temperature range of 360–410 ℃  was attributed to the thermal degradation of methylene bridges. The  third mass of ~ 38% loss at the temperature over 410 ℃ was attributed  to the thermal degradation of triazine rings. When compared to the degradation behavior of the pristine MS, MS-4 demonstrated a smaller  mass loss of ~ 3% in the first mass loss range, suggesting a lower  sorption of water due to the improved hydrophobicity.implying the excellent resistance of MS-4 towards acidic and alkaline  environments. Moreover, MS-4 also remained excellent hydrophobicity  with WCA of 149.3◦, even upon the exposure to a 40% sodium chloride  solution (Fig. 7d). The impressive mechanical and chemical stability  highlighted the potential applications of MS-4 under harsh conditions.

Superhydrophobic melamine sponges with high performance in oilorganicsolvent sorption.pdf