Monodisperse Ultra-long Branched Alkanes

This overcrowding is relieved either by the lamellae curving, the chains in the crystal tilting or even by Umiting the lateral size of the crystals. Consequently, thin, imperfect crystals are formed under such conditions. 

To gain a better insight into the crystalUzation mechanism and resulting crystal structures of the branched alkanes with respect to the branch length, the phase behavior of the butyl branched alkane C96Hi93CH(C4H9)C94Hi89 

Initially, if one applies a pressure of 3.8 kbar to the sample, no change in behavior is seen compared to that observed in linear alkanes [51]. The intensity of the diffracted pattern will decrease but that is purely to the thickness of the sample decreasing with increased pressure. As the sample is heated, the monoclinic phase will disappear hrst at approximately 160°C, with a corresponding increase in the intensity of the orthorhombic peaks. The sample hnaUy melts at approximately 258°C. 

Definite assignment of a phase to the new reflection is not straightforward as only one reflection is observed for the present it has been termed a 

It is remarkable that the new phase, once it appears shows very little expansion or contraction whether caused by temperature or pressure. Again this must be because of the constraints imposed by the folds on the surface, fixing the separation of the branches. Indeed, the orthorhombic reflections can 

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