Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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Publisher: search.filters.publisher.John Wiley and Sons Inc.Subject: search.filters.subject.Polymers

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  • Book Part
    Citation - Scopus: 1
    Mass Spectroscopy in Polymer Research
    (John Wiley and Sons Inc., 2012) Hacaloğlu, Jale; Yalçın, Talat
    Mass spectrometers are currently available in numerous confi gurations with various ionization techniques and mass analyzers. For a specifi c polymer sample, an optimal choice should be done depending on the information sought. In practice, no single mass spectrometric technique can provide all necessary information for structural, compositional, and thermal and oxidative degradation characteristics of polymeric samples. The analyzer used determines the limits of the sensitivity and resolution and the mass range, whereas the type of ionization source specifi es the information that can be gained.
  • Article
    Citation - WoS: 26
    Citation - Scopus: 27
    Understanding the Effect of Skin Formation on the Removal of Solvents From Semicrystalline Polymers
    (John Wiley and Sons Inc., 2005) Wong, Sim-Siong; Alsoy Altınkaya, Sacide; Mallapragada, Surya K.
    The effect of glassy skin formation on the drying of semicrystalline polymers was investigated with a comprehensive mathematical model developed for multicomponent systems. Polymers with high glass-transition temperatures can become rubbery at room temperature under the influence of solvents. As the solvents are removed from the polymer, a glassy skin can form and continue to develop. The model takes into account the effects of diffusion-induced polymer crystallization as well as glassy-rubbery transitions on the overall solvent content and polymer crystallinity. A Vrentas-Duda free-volume-based diffusion scheme and crystallization kinetics were used in our model. The polymer-solvent system chosen was a poly(vinyl alcohol) (PVA)-water-methanol system. The drying kinetics of PVA films were obtained by gravimetric methods with swollen films with known water/methanol concentrations. The overall drying behaviors of the polymer system determined by our model and experimental methods were compared and found to match well.