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Recent developments in the macromolecular engineering of aliphatic polyesters have been overviewed. First, aluminum alkoxides mediated living ring opening polymerization (ROP) of cyclic (di)esters, i.e., lactones, lactides, glycolide, is introduced. An insight into this so-called “coordination-insertion” mechanism and the ability of this living polymerization process to prepare well-defined homopolymers,...
Polyimides are currently the materials of choice for interlayer dielectrics in microelectronic applications, since polyimides, as a class of materials, best satisfy the requisite properties to survive the thermal, chemical, and mechanical stresses associated with microelectronic fabrication. As more function is demanded of these polymer dielectrics, e.g., low residual thermal stress, adhesion, photosensitivity,...
The development of procedures for the synthesis of dendritic macromolecules by either the convergent or divergent growth approaches is outlined with emphasis placed on the controlled manipulation of three-dimensional structure. The utility of these techniques to prepare a wide variety of different dendritic structures is then discussed in terms of the three distinct regions associated with these novel...
Macroporous polymers are treated in detail in this review, focusing on how to predict phase behavior and to prepare thermosetting materials. The formation of porous polymers is initially classified into methods of gas blowing, emulsion derived and phase separation. In chemically induced phase separation that involves a reactive polymer precursor and a solvent, phase separation is driven by the change...
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