By Vladimir O. Aseyev, Heikki Tenhu (auth.), Alexei R. Khokhlov (eds.)
ISBN-10: 3540295151
ISBN-13: 9783540295150
"The two-volume set edited by means of Khokhlov covers the layout and synthesis of copolymers which are in a position to mimicking the habit of organic macromolecules, resembling peptides and proteins, in an aqueous answer. ...
The set is seriously weighted towards the theoretical facet of CDSD, however it does comprise adequate experimental effects for these within the actual and analytical components of polymer chemistry. total, given the price of this two-volume set, it's not likely of common curiosity to the complete polymer neighborhood; even though, for scientists operating within the parts of amphiphilic artificial polymers, biomimetic techniques to polymers, and globular biopolymers, those volumes will be an outstanding addition to their own libraries...."
written by way of Eric Fossum, Wright kingdom collage in J.Am.Chem.Soc. Vo. 126, No. 39, p. 13208, 2006
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Extra info for Conformation-Dependent Design of Sequences in Copolymers II
Sample text
Left: Shrinking of the grafted PVCL microgel. 1 Cross-Linked PVCL Microgels Stabilised with Amphiphilic Grafts Laukkanen et al. [177, 178, 182] used emulsion polymerisation to prepare cross-linked PVCL microgels. The experimental details are outlined in Table 3. Special attention was paid to controlling the surface properties of the microgels. Four different PVCL microgels were prepared by specific selection of the initiators and surfactants. Negatively charged particles were obtained using an ionic initiator, potassium persulphate (KPS) which upon decomposition forms sulphate anion radicals, which covalently bind to the growing polymer.
An example is the preparation of NIPAM-VP copolymers (5 or 10 mol % of VP) [183]. When the polymerisation was performed in water at a temperature above the phaseseparation temperature of PNIPAM, segmented copolymers were obtained, whereas polymerisation conducted in water kept below the cloud point of PNIPAM led to a random distribution of VP units along the chain. The copolymers of segmented VP distribution aggregate more readily upon heating than random copolymers and tend to form stable aggregates larger than those formed by random NIPAM-VP copolymers at elevated temperatures.
159] reported recently a study of the demixing of water and PNIPAM of varying chain lengths over a wide range of composition. They defined the demixing temperature, Tdem , as the temperature corresponding to the onset of the endothermic signal in the DSC trace (Fig. 2). They also determined the cloud points of the mixed systems by turbidimetry (Fig. 3a). Values of Tcp and Tdem agree reasonably well. The small discrepancy between the two values for a given water–PNIPAM mixture and a given polymer molar mass may be ascribed to differences in the heating rates employed in the two methods.
Conformation-Dependent Design of Sequences in Copolymers II by Vladimir O. Aseyev, Heikki Tenhu (auth.), Alexei R. Khokhlov (eds.)
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