Journal
2017 INTERNATIONAL CONFERENCE ON BUILDING MATERIALS AND MATERIALS ENGINEERING (ICBMM 2017)
Volume 264, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1757-899X/264/1/012019
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Funding
- Innovate UK agency, under Knowledge Transfer Partnership Programme (KTP)
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This study was aimed at understanding any effects that the presence of acrylic acid dimer could have on thermo-mechanical properties of acrylic acid-based hydrogels. Polymeric hydrogels were systematically synthesised and characterised on the basis of having different concentrations of acrylic acid dimer. The materials show a reversible thermo-responsive behaviour, when heated in situ using light transmittance approaches. The point of cloudiness is significantly influenced as a consequence of the presence of the acrylic acid dimer material. Increasing the amount of the dimer additive up to 2% improves the light transmittance (%) of the soft gels by up to 70%, at 140 degrees C, suggesting that a potential method of altering the lower critical solution temperature of the soft gels is to alter the polymer backbone through copolymerization. As the amount of dimer was increased up to 2%, the values of storage modulus (G') were increased by up to 75%, leading to greater viscoelasticity and stronger gel compositions.
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