AbstractUtilization of polymers as biomaterials has greatly impacted the advancement of modern medicine. Specifically, polymeric biomaterials that are biodegradable provide the significant advantage of being able to be broken down and removed after they have served their function. Applications are wide ranging with degradable polymers being used clinically as surgi...... hiện toàn bộ
Roar R. Søndergaard, Markus Hösel, Frederik C. Krebs
AbstractWith the prospect of extremely fast manufacture of very low cost devices, organic electronics prepared by thin film processing techniques that are compatible with roll‐to‐roll (R2R) methods are presently receiving an increasing interest. Several technologies using organic thin films are at the point, where transfer from the laboratory to a more production‐o...... hiện toàn bộ
AbstractThe field of organic thin films and devices is progressing at an extremely rapid pace. Organic–metal and organic–organic interfaces play crucial roles in charge injection into, and transport through, these devices. Their electronic structure, chemical properties, and electrical behavior must be fully characterized and understood if the engineering and contr...... hiện toàn bộ
B. Fillon, J. C. Wittmann, Bernard Lotz, A. Thierry
AbstractThe crystallization behavior after partial or complete melting of the α phase of iPP is examined by combined differential scanning calorimetry (DSC) and optical microscopy: calorimetric results are directly correlated with corresponding morphologies of microtome sections of DSC samples. On partial melting at various temperatures (hereafter referred to as ... hiện toàn bộ
AbstractThe swelling of crosslinked poiy(N,N′‐alkyl substituted acrylamides) in water was studied in relation to temperature changes. Conventional swelling theory and separation of the polymer solvent interaction parameter into enthalpic and entropic contributions were used to characterize the temperature depend...... hiện toàn bộ
Soonil D.D.V. Rughooputh, Shu Hotta, A. J. Heeger, Fred Wudl
AbstractThermochromism and solvatochromism of solutions of poly(3‐alkylthienylenes) are reported. The experimental results indicate the presence of two coexisting phases: polymer in solution and polymer in microcrystalline aggregates. From the concentration independence of the thermochromism, it is concluded that the transition is fundamentally driven by a single c...... hiện toàn bộ
Michael A. Hickner, Andrew M. Herring, E. Bryan Coughlin
ABSTRACTThis short review is meant to provide the reader with highlights in anion exchange membrane research, describe current needs in the field, and point out promising directions for future work. Anion exchange membranes (AEMs) provide one possible route to low platinum or platinum‐free fuel cells with the potential for facile oxidation of complex fuels beyond h...... hiện toàn bộ
AbstractThis review focuses on the structural control in thin films of regioregular poly(3‐hexylthiophene) (P3HT), a workhorse among conjugated semiconducting polymers. It highlights the correlation existing between processing conditions and the resulting structures formed in thin films and in solution. Particular emphasis is put on the control of nucleation, cryst...... hiện toàn bộ
B. Fillon, Bernard Lotz, A. Thierry, J. C. Wittmann
AbstractA simple, convenient and reliable calorimetric efficiency scale is proposed for the evaluation of nucleating additives for polymers. The scale is based on conventional differential scanning calorimetry cooling runs and makes use of a crystallization range determined in self‐nucleation experiments. It can be correlated with spherulite sizes, and indicates th...... hiện toàn bộ