All Outputs (6)

Sustainable ABA triblock methacrylate copolymers incorporating both high and low Tg terpene-derived monomers (2022)
Journal Article
Atkinson, R. L., Elsmore, M., Smith, S., Reynolds-Green, M., Topham, P. D., Toolan, D. T., …Howdle, S. M. (2022). Sustainable ABA triblock methacrylate copolymers incorporating both high and low Tg terpene-derived monomers. European Polymer Journal, 179, Article 11567. https://doi.org/10.1016/j.eurpolymj.2022.111567

We report the synthesis of novel terpene-based monomers: nopinyl acrylate and methacrylate, from naturally abundant β-pinene. A very high Tg value was observed for poly(nopinyl methacrylate) when synthesised by free radical polymerisation, and well-d... Read More about Sustainable ABA triblock methacrylate copolymers incorporating both high and low Tg terpene-derived monomers.

A self-crosslinking monomer, α-pinene methacrylate: understanding and exploiting hydrogen abstraction (2022)
Journal Article
Monaghan, O. R., Skowron, S. T., Moore, J. C., Pin-Nó, M., Kortsen, K., Atkinson, R. L., …Howdle, S. M. (2022). A self-crosslinking monomer, α-pinene methacrylate: understanding and exploiting hydrogen abstraction. Polymer Chemistry, 13(39), 5557-5567. https://doi.org/10.1039/d2py00878e

Crosslinking is a valuable route to creating new polymeric materials and normally involves introduction of a cross linker or some form of secondary processing. Here we report the discovery and analysis of a self-crosslinking sustainable terpene deriv... Read More about A self-crosslinking monomer, α-pinene methacrylate: understanding and exploiting hydrogen abstraction.

Sustainable terpene triblock copolymers with tuneable properties for pressure sensitive adhesive applications (2022)
Journal Article
Elsmore, M., Atkinson, R., Irvine, D., Howdle, S., & De Focatiis, D. (2022). Sustainable terpene triblock copolymers with tuneable properties for pressure sensitive adhesive applications. Polymer Testing, 109, Article 107530. https://doi.org/10.1016/j.polymertesting.2022.107530

A series of triblock copolymers in a hard-soft-hard block configuration with varying hard block α-pinene methacrylate content and molecular weight and butyl acrylate soft segment have been synthesised and investigated for viability in pressure sensit... Read More about Sustainable terpene triblock copolymers with tuneable properties for pressure sensitive adhesive applications.

RAFT polymerisation of renewable terpene (meth)acrylates and the convergent synthesis of methacrylate-acrylate-methacrylate triblock copolymers (2021)
Journal Article
Atkinson, R. L., Monaghan, O., Elsmore, M. T., Topham, P. D., Toolan, D. T. W., Derry, M. J., …Howdle, S. M. (2021). RAFT polymerisation of renewable terpene (meth)acrylates and the convergent synthesis of methacrylate-acrylate-methacrylate triblock copolymers. Polymer Chemistry, 12(21), 3177-3189. https://doi.org/10.1039/d1py00326g

Terpenes are ideal candidates for sustainable polymer feedstocks, due to their natural abundance and availability from existing waste streams. Previously, we have shown that a range of terpene(meth)acrylate monomers can be synthesised from the most c... Read More about RAFT polymerisation of renewable terpene (meth)acrylates and the convergent synthesis of methacrylate-acrylate-methacrylate triblock copolymers.

Can a combination of poly(ethylene glycol) and dense phase carbon dioxide improve processing of polylactide? A high pressure rheology investigation (2017)
Journal Article
Pepper, K., Masson, T., De Focatiis, D. S., & Howdle, S. M. (in press). Can a combination of poly(ethylene glycol) and dense phase carbon dioxide improve processing of polylactide? A high pressure rheology investigation. Journal of Supercritical Fluids, 133(1), https://doi.org/10.1016/j.supflu.2017.10.014

High temperature melts or use of organic solvents are not practicable approaches for encapsulating protein based or thermally labile drugs into degradable polymers. Here, we demonstrate that poly(ethylene glycol) (PEG) in combination with supercritic... Read More about Can a combination of poly(ethylene glycol) and dense phase carbon dioxide improve processing of polylactide? A high pressure rheology investigation.

High-pressure rheological analysis of CO2-induced melting point depression and viscosity reduction of poly(?-caprolactone) (2015)
Journal Article
Curia, S., De Focatiis, D. S., & Howdle, S. M. (2015). High-pressure rheological analysis of CO2-induced melting point depression and viscosity reduction of poly(?-caprolactone). Polymer, 69, https://doi.org/10.1016/j.polymer.2015.05.026

High-pressure rheology has been used to assess the effects of supercritical carbon dioxide (scCO2) on the melting point (Tm) and viscosity of poly (?-caprolactone) (PCL) over a range of temperatures and pressures up to 300 bar over a wide range of sh... Read More about High-pressure rheological analysis of CO2-induced melting point depression and viscosity reduction of poly(?-caprolactone).