Graeme Moad | CSIRO - Academia.edu (original) (raw)

Papers by Graeme Moad

Macromolecules, 1995

... Julia Krstina, Graeme Moad,* Ezio Rizzardo, and Catherine L. Winzor CSIRO, Division of Chemic... more ... Julia Krstina, Graeme Moad,* Ezio Rizzardo, and Catherine L. Winzor CSIRO, Division of Chemicals and Polymers, Private Bag 10, Rosebank MDC, Clayton, Victoria 3169, Australia Charles T. Berge and Michael ... (16) Darmon, MJ; Berge ... (17) Cacioli, P.; Hawthorne, D. G.; Laslett ...

The document gives definitions of terms met in the conventional thermal and thermo mechanical cha... more The document gives definitions of terms met in the conventional thermal and thermo mechanical characterisation of polymeric materials.

Macromolecular …, Jan 1, 1996

... Julia Krstina, Catherine L. Moad, Graeme Moad,* Ezio Rizzardo, ... Theory Simul. 3,439 (1994)... more ... Julia Krstina, Catherine L. Moad, Graeme Moad,* Ezio Rizzardo, ... Theory Simul. 3,439 (1994) P. Cacioli, DG Hawthorne, RL Laslett, E. Rizzardo, D. H. Solomon, J . Macromol. ... A23,839 (1986) US 5 362 826 (1992), du Pont, invs.: M. J. Darmon, CT Berge, JA Antonelli; Chem. ...

Macromolecules, 1987

We include all potential ion pairs. For example, glutamate-33, which has a lysine at 33 + 4 = 37 ... more We include all potential ion pairs. For example, glutamate-33, which has a lysine at 33 + 4 = 37 and another lysine at 33 -4 = 29, contributes two pairs of potential i.(i i 4) attractive pairs to the total number. The total obtained in the following paragraph for i.(i k 4) attractive pairs that involve glutamate was obtained on the same basis. (13) The factor of 2 is a bit too large. It only holds for an interior glutamate residue, Le., one that has a neighbor at both i -4

Macromolecules, Nov 27, 2007

Polym. Chem., 2015

ABSTRACT Reversible deactivation radical polymerisation (RDRP) has enabled chemists to generate p... more ABSTRACT Reversible deactivation radical polymerisation (RDRP) has enabled chemists to generate polymers with precision control over molecular weight and molecular structure. Despite recent advances in the field of template polymerisation, control of the repeat unit sequence requires further development. We describe herein the synthesis of sequence-regulated copolymers of styrene-thymine and maleic anhydride.

Polymer, Sep 8, 2005

This paper provides an overview and discusses some recent developments in radical polymerization ... more This paper provides an overview and discusses some recent developments in radical polymerization with reversible additionfragmentation chain transfer (RAFT polymerization). Guidelines for the selection of RAFT agents are presented. The utility of the RAFT process is then illustrated with several examples of the synthesis of polymers with reactive end-groups. Thus, RAFT polymerization with appropriately designed trithiocarbonate RAFT agents is successfully applied to the synthesis of narrow polydispersity carboxy-functional poly(methyl methacrylate) and primary amino-functional polystyrene. Methods for removing the thiocarbonylthio end-group by aminolysis, reduction and thermal elimination are discussed. It is shown that the thiocarbonylthio end-group can be cleanly cleaved by radical induced reduction with tri-n-butylstannane, to leave a saturated chain end, or by thermolysis, to leave an unsaturated chain end. q

Macromolecules, Aug 1, 2006

Phthalimidomethyl trithiocarbonates are used as reversible addition fragmentation chain transfer ... more Phthalimidomethyl trithiocarbonates are used as reversible addition fragmentation chain transfer (RAFT) agents to provide low polydispersity R-(phthalimidomethyl)polystyrene with number-average molecular weight in the range 1000-100000 g mol -1 . The activity of the phthalimidomethyl trithiocarbonates in RAFT polymerization of styrene, which appears to be similar to that of analogous benzyl trithiocarbonates, is attributed to the electrophilic character of the phthalimidomethyl group. The trithiocarbonate functionality in the products was quantitatively transformed to inert chain ends either by radical-induced reduction with tributylstannane or by thermal elimination, allowing the phthalimido end groups to be cleanly converted to primary amine end groups by hydrazinolysis. Thermolysis experiments, in which the polymers are cleaved at the trithiocarbonate linkage, also provide information on the mechanism of RAFT polymerization. In the case of the symmetrical bis(phthalimidomethyl) trithiocarbonate the two chains grow stepwise indicating that this RAFT agent has a higher transfer constant than the phthalimidomethyl polystyrene trithiocarbonate and that polystyrene propagating radical is a better homolytic leaving group than the phthalimidomethyl radical.

Free radical polymerization with reversible addition±fragmentation chain transfer (RAFT polymeriz... more Free radical polymerization with reversible addition±fragmentation chain transfer (RAFT polymerization) is discussed with a view to answering the following questions: (a) How living is RAFT polymerization? (b) What controls the activity of thiocarbonylthio compounds in RAFT polymerization? (c) How do rates of polymerization differ from those of conventional radical polymerization? (d) Can RAFT agents be used in emulsion polymerization? Retardation, observed when high concentrations of certain RAFT agents are used and in the early stages of emulsion polymerization, and how to overcome it by appropriate choice of reaction conditions, are considered in detail. Examples of the use of thiocarbonylthio RAFT agents in emulsion and miniemulsion polymerization are provided.