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Examining the influence of bisphenol A on the polymerisation and network properties of an aromatic benzoxazine

Hassan, WAW, Liu, J, Howlin, BJ, Ishida, H and Hamerton, I (2016) Examining the influence of bisphenol A on the polymerisation and network properties of an aromatic benzoxazine Polymer, 88. pp. 52-62.

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Abstract

A series of reactive blends, comprising a commercial benzoxazine monomer, 2,2-bis(3,4-dihydro-3-phenyl-2H-1,3-benzoxazine)propane, and bisphenol A is prepared and characterized. Thermal analysis and dynamic rheology reveal how the introduction of up to 15 wt % bisphenol A lead to a significant increase in reactivity (the exothermic peak maximum of thermal polymerization is reduced from 245 °C to 215 °C), with a small penalty in glass transition temperature (reduction of 15 K), but similar thermal stability (onset of degradation = 283 °C, char yield = 26%). With higher concentrations of bisphenol A (e.g. 25 wt %), a significantly more reactive blend is produced (exothermic peak maximum = 192 °C), but with a significantly lower thermal stability (onset of degradation = 265 °C, char yield = 22%) and glass transition temperature (128 °C). Attempts to produce a cured plaque containing 35 wt % bisphenol A were unsuccessful, due to brittleness. Molecular modelling is used to replicate successfully the glass transition temperatures (measured using thermal analysis) of a range of copolymers.

Item Type: Article
Subjects : Chemistry
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
AuthorsEmailORCID
Hassan, WAWUNSPECIFIEDUNSPECIFIED
Liu, JUNSPECIFIEDUNSPECIFIED
Howlin, BJUNSPECIFIEDUNSPECIFIED
Ishida, HUNSPECIFIEDUNSPECIFIED
Hamerton, IUNSPECIFIEDUNSPECIFIED
Date : 21 January 2016
Identification Number : 10.1016/j.polymer.2016.01.041
Uncontrolled Keywords : Science & Technology, Physical Sciences, Polymer Science, Polybenzoxazines, Bisphenol A, Copolymers, Thermal behaviour, Molecular modelling, ELECTRONIC PACKAGING MATERIALS, RING-OPENING POLYMERIZATION, PHENOLIC RESIN, TERNARY-SYSTEMS, MODIFIED POLYBENZOXAZINE, HYBRID NANOCOMPOSITES, MECHANICAL PROPERTIES, THERMOSETTING BLENDS, MOLECULAR-STRUCTURE, CURING KINETICS
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 16 Jun 2016 14:52
Last Modified : 16 Jun 2016 14:52
URI: http://epubs.surrey.ac.uk/id/eprint/811019

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