Morphology amorphous

Amorphous Polymer - Amorphous polymers are polymers having noncrystalline or amorphous supramolecular structure or morphology. Amorphous polymers may have some molecular order but usually are substantially less ordered than crystalline polymers and, subsequently, have inferior mechanical properties. 

The advantages of the polymeric route to ceramic fibers include the ability to control morphology (amorphous or crystalline and control of crystalline size) and the ability to prepare continuous, fine-diameter fibers (<30 pm) suitable for weaving and knitting. One of the unique advantages of this method is the ability to prepare metastable compositions unobtainable by conventional methods. 

Morphology Amorphous Needles grow- Crumbled foils Compact gel... 

Polymers can be divided into two groups morphologically amorphous polymers and crystalline polymers. Amorphous polymers lack sufficient regularity in packing of the chains to produce the sharp x-ray diffraction pattern characteristic of highly crystalline polymers. The term crystalline polymer is actually a misnomer since no polymer is 100% crystalline, containing both crystalline domains and amorphous domains. Therefore, a more correct yet seldom used designation is semicrystalline polymer. 

First of all, solid polymers can be broadly classified into two general areas by morphology amorphous and semicrystalline. The latter types exhibit a melt-... 

Morphology (amorphous, semicrystalline, crystalline, microstracture, residual stress)... 

Polymer morphology (amorphous and semicrystalline regions) plays an evident role in oxidation and/or photo-oxidation reactions. 

Owing to their relatively hydrophilic nature, PGA materials are degraded in vivo rapidly, from hours to months depending mainly on the initial molecular weight, morphology (amorphous/crystalline phases) and surface-to-volume ratio of the sample (i.e. its shape). The PGA degradation mechanism is not yet fully understood but it is believed... 

To achieve highly stable BHJ thin-film morphology, amorphous PCBM derivatives have been developed by Jen and co-workers (Scheme 3.3). They synthesized PCBM derivatives having bulky aromatic groups such as triphenylamine (TPA) and 9,9-dimethylfiuorene (MF). The TPA-PCBM (10) and MF-PCBM (11) obtained have high glass transition temperatures, Tg, of... 

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