Polymer Chemistry

Recent mechanistic developments in the field of controlled/living radical polymerization (CRP) are reviewed. Particular emphasis is placed on structure-reactivity correlations and "rules" for catalyst selection in atom transfer radical…

For binary mixtures the phase separation depends on various typical parameters like pressure and temperature. In addition, in 1965 Debye and Kleboth showed that it can also be influenced by external electric fields. They found that a moderate…

Abstract 10.1002/marc.200600625.abs The modification of polymers after the successful achievement of a polymerization process represents an important task in macromolecular science. Cycloaddition reactions, among them the metal catalyzed…

Following Sharpless' visionary characterization of several idealized reactions as click reactions, the materials science and synthetic chemistry communities have pursued numerous routes toward the identification and implementation of these click…

This viewgraph presentation describes new technologies in polymer and material chemistry that benefits NASA programs and missions. The topics include: 1) What are Polymers?; 2) History of Polymer Chemistry; 3) Composites/Materials Development at…

This paper presents a review of living radical polymerization achieved with thiocarbonylthio compounds ZC(=S)SR by a mechanism of reversible addition-fragmentation chain transfer (RAFT). Since we first introduced the technique in 1998, the number of…

A review with 409 refs. Mechanism and components (monomers, initiators, catalysts, ligands, solvents, and additives) for atom transfer radical polymn. (ATRP) are introduced. Polymers made by ATRP methods are discussed. They are gradient copolymer,…

Tables of 1H and 13C NMR chemical shifts have been compiled for common organic compounds often used as reagents or found as products or contaminants in deuterated organic solvents. Building upon the work of Gottlieb, Kotlyar, and Nudelman in the…

Poly(2-methyl-2-oxazoline) (polyMeOZO) macromers having a styryl group as polymerizable function have been prepared via two methods. The first one is to use an amine nucleophile having a styryl group to terminate the living cationic propagating…

Over the past 15 years, hyperbranched polymers have received much attention due to their unique chemical and physical properties as well as their potential applications in coatings, additives, drug and gene delivery, macromolecular building blocks,…

Insights into conducting research and the writing of scientific papers are given by Prof. Whitesides in this short essay. The manuscript and its guidelines has been circulated within the Whitesides' research group since 1989.

In the course of the routine use of NMR as an aid for organic chemistry, a day-to-day problem is the identifica- tion of signals deriving from common contaminants (water, solvents, stabilizers, oils) in less-than-analyti- cally-pure samples. This…

Atom transfer radical polymerization (ATRP) is the most extensively studied controlled/living radical polymerization (CRP) method, with the interest originating primarily in its simplicity and broad applicability, and in the ability to prepare…

Atom transfer radical polymn. of styrene and Me acrylate is investigated using 1-phenylethyl chloride as a chlorine atom transfer precursor (initiator) and CuCl/2,2'-bipyridine complex as a chlorine atom transfer promoter (catalyst). The "living"…

As a tribute to Professor Charlie Hoyle, we take the opportunity to review the impact of thiol-ene chemistry on polymer and materials science over the past 5 years. During this time, a renaissance in thiol-ene chemistry has occurred with recent…

Emulsion polymerization involves the propagation reaction of free radicals with monomer molecules in a very large number of discrete polymer particles (10(16)-10(18) dm(-3)) dispersed in the continuous aqueous phase. The nucleation and growth of…

In the large field of nanotechnology, polymer matrix based nanocomposites have become a prominent area of current research and development. Exfoliated clay-based nanocomposites have dominated the polymer literature but there are a large number of…

A review is given of the academic and industrial aspects of the preparation, characterization, materials properties, crystallization behavior, melt rheology, and processing of polymer/layered silicate nanocomposites. These materials are attracting…

Responsive polymer materials can adapt to surrounding environments, regulate transport of ions and molecules, change wettability and adhesion of different species on external stimuli, or convert chemical and biochemical signals into optical,…

This review traces the development of addition-fragmentation chain transfer agents and related ring-opening monomers highlighting recent innovation in these areas. The major part of this review deals with reagents that give reversible…