imide

Herein we report insights into the evolution of the thermally induced structural transformation in poly(imide) films by X-ray photoelectron spectroscopy (XPS)--a selective surface analysis technique.

The main byproduct formed when ammonium acetate is used is a cyclic imide and this may be explained by the rapid dissociation of ammonium acetate to give ammonia that initiates quick imide formation.

In this paper, the nitrogen-phosphorous synergistic effect on flame retardancy was studied by incorporating rigid imide and phosphorous group in diglycidylether of bisphenol A (BPA) resin.

The coating of SMI-1 shows some larger defects than SMI-2, related to coating strength and imide content.

The presence of absorption bands at 1792 and 1720 [cm.sup.-1] due to symmetric and asymmetric stretching of C = O in the five membered imide ring indicates that the imide ring remained intact in the polymerization.

When SMA imide resins were used as coagulants with chemical recycled pulp and TMP, the retention of fines and fillers was measured to be high.

This yields a product containing a tough imide bond--similar to the rigid linkage that makes the polymer Kevlar strong enough to serve in bulletproof vests.

The imide ring-opening reaction by the attack of amino groups occurs because of the coexistence of primary amino compounds with the imide ring.

However, poly(ether imide) hydrophilic membrane has been used in the membrane contactor in this study.

Sartomer Company has announced the commercial availability of its line of styrene maleic anhydride (SMA[R]) imide resins, a group of multi-functional cationic additives that impart performance properties during the wet end and paper coating stages of paper manufacturing.

It is notable that BPOB-5 has higher orientation than BPOB-1, which can be explained by the fact that hydrogen bonding between the BIA and cyclic imide units restricts the flexibility of the polymer chain and the disorientation.

developed catalysts for chain extension and/or crosslinking of oligomers or polymers based on carbon-carbon triple bonds, such as phenylethynyl-terminated imide oligomers.

Characteristic bands for polyimide are imide I(C=0 stretch at 1786 [cm.sup.-1]), imide II(C-N-C axial vibration stretch at 1395 [cm.sup.-1]), imide III(C-N-C transverse vibration stretch at 1124 [cm.sup.-1]) (26), (27).