Synthesis and characterization of poly(amideimide)s containing aliphatic diamine moieties

Abstract

Abstract New poly(amideimide)s (PAI) containing aliphatic diamines as comonomers were synthesized by polycondensation of trimellitic anhydride chloride with mixed diamines. Preliminary results of copolymerization with various alicyclic diamines suggested that isophoronediamine (IPDA) is more preferable as a comonomer for PAI. The copolyamide imides with IPDA showed that IPDA is more rigid than mbisaminophenoxydiphenylsulfone Systematic name: 4,4′‐Sulfonylbis(1,3‐phenylenoxy)dianiline. (m‐BAPS) and 4,4′‐diaminodiphenyl ether (ODA), but less than m‐phenylenediamine (m‐PDA). And they showed good mechanical properties with 105 ∼ 118 MPa of tensile strength and T g 's were ranged 232 ∼ 301 °C depending on molecular weight and comonomers. The solubility was improved due to the aliphatic character of IPDA in the copolymers. Rheological properties were also improved compared with conventional PAI. The melt viscosity of the copolymers ranged 1.6 · 10 3 ∼ 2.1 · 10 3 Pa · s, thus, the reported PAIs may be considered to be new candidates for melt processable high‐performance polymer materials.