Effect of different polyol-based plasticizers on thermal properties of polyvinyl alcohol:starch blends


Aydın A. A., ILBERG V.

CARBOHYDRATE POLYMERS, cilt.136, ss.441-448, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 136
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.carbpol.2015.08.093
  • Dergi Adı: CARBOHYDRATE POLYMERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.441-448
  • Anahtar Kelimeler: Starch, Polyvinyl alcohol, Plasticizer, Polyol, Thermal properties, Glass transition, LINKED POTATO STARCH, SURFACE CHARACTERIZATION, MECHANICAL-PROPERTIES, CITRIC-ACID, FILMS, STABILITY, MORPHOLOGY, ADDITIVES, GLYCEROL, BEHAVIOR
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

A series of gelatinized polyvinyl alcohol (PVA):starch blends were prepared with various polyol-based plasticizers in 5 wt%, 15 wt% and 25 wt% ratios via solution casting method. The obtained films were analyzed by Fourier transform infrared (FT-IR) spectroscopy, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Remarkable changes have been observed in glass-transition temperature (T-g) and thermal stability of the samples containing varying concentrations of different plasticizers and they have been discussed in detail with respect to the conducted thermal and chemical analyses. The observed order of Tg point depression of the samples containing 15 wt% plasticizer is 1,4-butanediol - 1,2,6-hexanetriol - pentaerythriyol - xylitol - mannitol, which is similar to the sequence of the thermal stability changes of the samples. (C) 2015 Elsevier Ltd. All rights reserved.