Synthesis and Characterization of Star-Shaped (PCL-B-PEG) as Potential Electrospun Microfibers
| Autor: | Wan Khartini Wan Abdul Khodir, Shafida Abd Hamid, Wafiuddin Ismail, Rusli Daik |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Multidisciplinary Materials science 05 social sciences Dispersity technology industry and agriculture Polymer Ring-opening polymerization Electrospinning chemistry.chemical_compound Differential scanning calorimetry chemistry Chemical engineering Polymerization 0502 economics and business 050211 marketing Ethylene glycol 050203 business & management |
| Zdroj: | Sains Malaysiana. 48:2265-2275 |
| ISSN: | 0126-6039 |
| DOI: | 10.17576/jsm-2019-4810-23 |
| Popis: | Star-shaped polymers have vast potential in application due to their architecture. In this study, a 6-arm star-shaped of poly(ԑ-caprolactone)-b-poly(ethylene glycol), (6PCG) was synthesized via ring opening polymerization, (ROP) of ԑ-caprolactone and Steiglich esterification (coupling reaction) to attach the PEG arm to the star-shaped polymer with discrete core of dipentaerythritol. The polymer chemical structure was characterized by FT-IR. The molecular weight (Mn) determined from 1H NMR spectra showed that the star polymer has approximately the same molecular weight as the theoretical value. The polydispersity index indices (PDI) (>1.5) from GPC were narrow suggesting controlled polymerization reaction. Thermal stability of the star-shaped 6PCG were examined using thermogravimetric analysis, (TGA) and differential scanning calorimetry, (DSC) and showed slight increase compared to homopolymer star PCL due to the changes of end-group functionalities. Six-arm star-shaped PCL-b-PEG was dissolved in chloroform/methanol solvents and the resulting solution was used for electrospinning process. The morphology of nanofibres showed fine fibres without beads and thus a possible potential for several applications. |
| Databáze: | OpenAIRE |
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