Preparation of self-healing organic–inorganic nanocomposites with the reactions between methacrylated polyhedral oligomeric silsesquioxanes and furfurylamine

Self-healing polymeric materials for membrane separation: an example of a polybenzimidazole-based membrane for pervaporation dehydration on isopropanol aqueous solution

“…The anchored furan groups were characterized by the absorption of C]C and C-O bonds at 1588 and 1021 cm À1 , respectively. Moreover, 34 As displayed in Fig. 4, the sample was then thermally treated at 150 C to perform the retro-DAreaction on the DA adducts (the crosslinking points) to decrosslink the sample.…”

“…These types of thermally reversible crosslinked polymers have been widely observed to demonstrate self-healing properties. 4,29,34 In Fig. 5, the self-healing property of the prepared CR-PBI membrane is examined.…”

Thermoreversible Polymeric Nanocomposites

“…It is also noteworthy how CNT can act as both diene and dienophile in the DA reaction, respectively, with maleimide and furan groups [30]. As these reactions are mainly aimed at introducing functional groups on the CNT surface, this testifies the versatility of the approach even if in some cases side reactions might be present [19] and there is no mention of the reversibility or its use [31]. Some of the reported approaches towards incorporation of CNT via DA clearly indicate relatively easy synthetic routes [35] (Figure 3).…”

“…One of the main driving forces behind the use of such a strategy is the presence of special end properties. For example, the dynamic nature of thermally reversible interactions (as a function of temperature) endows composites with self-healing behavior [11,13,[15][16][17] and shape-memory characteristics [18,19].…”

Stimuli responsive self-healing polymers: gels, elastomers and membranes

“…30 Polyhedral oligomeric silsesquioxane (POSS) nanocomposites have also been reported based on DA chemistry and presented thermally triggered healing behaviour. 31,32 Despite the apparent advantages of the DA reaction in designing healable polymer materials, there are pragmatic limitations which somehow narrow the potential applications. For example, the toxicity of the furan derivatives is a prohibitive factor in applying these materials in the biomedical and bioelectronics fields, and additionally, the relatively high temperatures required for the retro reaction may be limiting the combination range of DA synthons with other polymer networks of relative low degradation temperatures.…”