Formation of a polybenzyl‐like polymer under anionic conditions

Poly(p‐phenylene methylene)‐based block copolymers by mechanistic transformation

“…The precursor PPM polymer showed a broad depletion in the DSC curves (endothermic) within the 85-105 C range, which represents melting of the polymers, as also evidenced by separate melting point tests. 29,48 The absence of this peak in block copolymers' DSC scans may be explained in terms of small chain lengths of PPM in the compositions. The melting temperature of PCL 49,50 segments was determined to be 58-62 C, whereas PTHF 51,52 melted at 45-47 C. These values are equal to the bulk melting temperatures of the homopolymers and indicate that the soft segments are well separated from the PPM block.…”

“…The thermal properties of the precursor polymer and the resulting block copolymers were also investigated by differential scanning calorimetry (DSC) under nitrogen atmosphere (Table 2). The precursor PPM polymer showed a broad depletion in the DSC curves (endothermic) within the 85–105 °C range, which represents melting of the polymers, as also evidenced by separate melting point tests 29, 48. The absence of this peak in block copolymers' DSC scans may be explained in terms of small chain lengths of PPM in the compositions.…”