Rheology of lightly-cured polydimethylsiloxane liquid blends

Villani, Vincenzo; Lavallata, Vito

doi:10.1016/j.eurpolymj.2019.05.011

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…However, different scales of molecular motion have different responses to the space limited. The reduction in free volume can mainly confine the molecule motion with long scale and has little effect on small motion units such as segments corresponding to T g [30,31]. This matches the phenomenon in Figure 5b.…”

Section: Inspection Ofsupporting

confidence: 78%

Effect of Phenolic Resin Oligomer Motion Ability on Energy Dissipation of Poly (Butyl Methacrylate)/Phenolic Resins Composites

et al. 2020

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Poly (butyl methacrylate) (PBMA) was blended with a series of phenolic resins (PR) to study the effect of PR molecular weight on dynamic mechanical properties of PBMA/PR composites. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) found a similar variation of glass transition temperature (Tg). The maximum loss peak (tanδmax) improved in all PBMA/PR blends compared with the pure PBMA. However, tanδmax reduced as the molecular weight increased. This is because PR with higher molecular weight is more rigid in the glass transition zone of blends. The hydrogen bonding between PBMA and PR was characterized by Fourier transform infrared spectroscopy (FTIR). Lower molecular weight PR formed more hydrogen bonds with the matrix and it had weaker temperature dependence. Combined with the results from DMA, we studied how molecular weight affected hydrogen bonding and thus further affected tanδmax.

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Section: Inspection Ofsupporting

confidence: 78%