Abstract
AbstractThe values of the vitreous transition temperature, Tg, of three poly(methacrylic ester)s having bulky side groups are correlated with structural effects. Tg has been obtained experimentally by means of differential calorimetry and by the tensiometric method suggested by Ferroni. The experimental values of Tg agree well with the calculated ones obtained by the method of Van Krevelen. The values of Tg determined by differential calorimetry are markedly affected by the heating rate and by the molecular weight of the fractions.The solubility parameters of the polymers studied have been estimated. Poly(p‐tert‐butylphenyl methacrylate), (BPh), exhibits higher values for the solubility parameter, the steric hindrance parameter σ and the glass transition temperature Tg than poly(p‐tert‐butylcyclohexyl methacrylate), (BCy), and poly(neopentyl methacrylate), (NPe).These results have been interpreted in terms of intermolecular forces and steric hindrance effects, which would be greater in BPh than in BCy and NPe.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
