Conducting polymers are interesting materials of technological applications, while the use of polymers as additives controlling crystal nucleation and growth is a fast growing research field. In the present article, we make a first step in combining both topics and report the effect of conducting polymer derivatives, which are based on carboxylated polyanilines (c-PANIs), on in vitro CaCO3 crys...

The non-isothermal transformation rate curves of metallic glasses are analyzed with the Master Curve method grounded in the Kolmogorov-Johnson-Mehl-Avrami theory. The method is applied to the study of two different metallic glasses determining the activation energy of the transformation and the experimental kinetic function that is analyzed using Avrami kinetics. The analysis of the crystalliza...

Effects of thermal transitions (glass transition, crystallization), water, and glycerol on invertase activity in freeze-dried carbohydrate systems were investigated. Efficacy of κ-carrageenan to delay sugar crystallization in freeze-dried carbohydrate systems was also studied. Water sorption properties and glass transition temperatures, Tg, were determined for freeze-dried carbohydrate-sucrose ...

In the first part of this review similarities and differences between physiological and pathological biomineralization (bone and tooth formation, osteoarticular and tooth pathologies, urolithiasis) are discussed. Both processes may be seen as the deposition of ionic crystals from high ionic strength solutions upon / within a preformed organic matrix and the presence or deficiency of crystalliza...

G lass-ceramics were discovered – somewhat accidently – in 1953. Since then, many exciting papers have been published and patents granted related to glass-ceramics by research institutes, universities and companies worldwide. Glass-ceramics (also known as vitrocerams, pyrocerams, vitrocerâmicos, vitroceramiques and sittals) are produced by controlled crystallization of certain glasses – general...

The desired bioavailability and the method of drug administration and delivery can require stringent control on the crystal size distribution. Optimal control strategies are proposed to manufacture crystals with a targeted size distribution by combining controlled seeding by impinging jet crystallization with a batch crystallizer operating at a controlled constant growth rate. The same strategi...

We report on the amorphous-to-crystalline phase transformation of rubrene thin films. The crystallization of the organic thin films displays disk-like domains whose nucleation and growth follow phase transformation kinetics well-established for inorganic materials under certain time and temperature conditions. We understood that the crystallization of amorphous rubrene thin film shows site-satu...

Precise protein structure determination provides significant information on life science research, although high-quality crystals are not easily obtained. We developed a system for producing high-quality protein crystals with high throughput. Using this system, gravity-controlled crystallization are made possible by a magnetic microgravity environment. In addition, in-situ and real-time observa...

Crystallization is an important separation technology used for the purification of products during their final stages of manufacturing. Novel semi-continuous and continuous crystallization process designs are receiving increasing attention in pharmaceutical industry due to significant advantages in terms of process, operation and costs. This dissertation aims to develop mathematical models for ...