The thermal and thermo-oxidative degradation of poly(tetrahydrofuran) and its complexes with LiBr and LiI

Impact of Filler Functionalisation on the Crystallinity, Thermal Stability and Mechanical Properties of Thermoplastic Elastomer/Carbon Nanotube Nanocomposites

“…Figure 4(a) shows the TGA curves of these polymers. It can be clearly seen that the PTMO oligomer is much less stable than PBT, which is in consistent line with the literature results 63–65. The neat PBT‐PTMO is almost as stable as neat PBT.…”

“…For the PBT‐PTMO this first step is characterised by two reactions, most probably due to the presence of PTMO segments in this material. In fact, the mechanism of decomposition of high molecular weight aliphatic polyethers [such as PTMO and poly(trimethylene oxide)] is very complex since it involves the formation of olefins, aldehydes, apart from cyclic ethers 65, 66. The proposed mechanism for the formation of aldehydes and olefin (1‐butene) is shown in Figure 5.…”

Transparent sulfur-containing thermoplastic polyurethanes with polyether and polycarbonate soft segments

“…When comparing the data received for SPURs PT-50 and PH-50 in helium and air (Table 4), it is clear that thermal stability of these SPURs variably depended on the testing atmosphere. PT-50 containing polyether soft segments resistant to oxidation to a low degree [31] revealed poorer stability (lower T 1 , T 5 , T 10 , and T 50 ) in air. Considering PH-50 with polycarbonate soft segments resistant to oxidation, enhanced stability was observed on the contrary.…”

Effect of the crosslinking degree and the nickel salt load on the thermal decomposition of poly(2-hydroxyethyl methacrylate) hydrogels and on the metal release from them

“…In the presence of oxygen, the salts can protect the polymers against degradation [30,31]. The structure of the complexes between a polymer and a cation mainly depends on the polymer structure, although the chemical characteristics of the ion also influence the complex.…”

“…The thermal degradation of polyethers, including poly(ethylene oxide) (PEO), poly(propylene oxide) (PPO) and its linear isomer poly(trimethylene oxide) (PTMO), or poly(tetrahydrofuran) (PTHF), is mainly due to the homolysis of C-O (preferentially) and C-C bonds of the backbone, followed by further reactions of the radicals so formed [30]. The reduction in thermal stability of polyethers complex with metal ions in an inert atmosphere can be explained on the basis of a strong interaction between the metal cation and the ether oxygen atoms in the polymer backbone, which causes the weakening of the C-O bond [31][32][33][34]. In general, the thermal degradation of poly-n-alkyl methacrylates yields monomers [29].…”