Synthesis and characterization of new adamantane‐based cardo polyamides

Synthesis and properties of new aromatic polyisophthalamides with adamantylamide pendent groups

“…For instance, the T g of poly( m ‐phenylene‐5‐benzoylaminoisophthalamide), a related polyamide with a pendent benzoylamino group, is 298 °C,25 which is 67 °C lower than the T g of 2a . They have also much higher T g than the PIPA prepared from isophthalic acid and an adamantane‐based cardo diamine, for which a T g of 231 °C has been reported 18…”

Compatible Ternary Blends of Chitosan/poly(vinyl alcohol)/poly(lactic acid) Produced by Oil-in-Water Emulsion Processing

“…The technique is based on the measurement of the deformation of the sample under very low load as the temperature is increased, and two main modes of deformation can be used, defined by the probe/sample contact area and the applied load: (i) expansion, when there is a large contact area and a low force is applied, and (ii) penetration, with a small contact area and high load. , In general, a combination of expansion/penetration is observed. Here TMA was used to determine the glass-transition temperature, ,, the softening temperature, ,, and the crystalline melting point. These transition temperatures were taken as the temperature at which the rate or direction of probe deflection changes suddenly.…”

“…17,18 In general, a combination of expansion/ penetration is observed. Here TMA was used to determine the glass-transition temperature, 17,19,20 the softening temperature, 17,18,20 and the crystalline melting point. These transition temperatures were taken as the temperature at which the rate or direction of probe deflection changes suddenly.…”

Solubility improvements in aromatic polyimides by macromolecular engineering

“…The incorporation of adamantyl groups into aromatic polyamides and polyimides has been reported to improve solubility or dielectric properties while retaining thermal stability and glass transition temperatures (7-1 and 7-2, Table 7). [207][208][209][210][211][212][213] Kwak et al 214 synthesized a phosphorus containing diamine monomer bis(3-aminophenyl)-4-(1-adamantyl)phenoxyphenyl phosphine oxide (mDAATPPO) (7-3, Table 7) and prepared polyimides from commercially available dianhydrides, like 6FDA, BTDA, ODPA and PMDA. The polymers exhibited good solubility in NMP, DMAc, and TCE depending on the rigidity of the dianhydrides.…”