The addition of a small amount of TBA not only has no obvious influences on the HSPC vesicle size and the retention of trapped calcein,but may also result in short freeze-drying cycles. Moreover, freeze-drying of HSPC liposomes from TBA/water co-solvent systems can provide sterile powder for specialized applications.In conjunction with a modified alcohol injection method, this technology may be used to produce dehydrated HSPC liposomes on a large scale. Vast majority of published works describe the freeze-drying and ultrasonication that belong to the most frequently employed
treatments. These techniques were used in shaping up the final properties of montmorillonite materials modified by inorganic or organic intercalation [Lee et al., 2004; Pacuła et al., The freeze-drying and ultrasound pretreatments have
been shown to greatly affect the appearance of the PXRD (powdered montmorillonite) patterns of randomly oriented
montmorillonite samples. Both treatments lead to the disruption of larger clay agglomerates into finer, more prone to mutual self orientation particles, but sonication – even mild, constitutes a more efficient means of clay disintegration
and induces greater textural ordering .