Smart polyurethane composites: Magnetic-field-sensitive crosslinked shape-memory polyurethane composites

Berna Öztürk, Tugce Inan, Hüsnü Atakül, Fatma Seniha Guner*

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

3 Atıf (Scopus)

Özet

Smart polymers synthesized from renewable sources are precious because of the environmental pressures of producing polymers from fossil fuels. This study develops a new formulation of polyurethane (PU) from partly renewable resources. PU composites were prepared from castor oil (CO), polyethylene glycol (PEG3000), and hexamethylene diisocyanate (HDI). CO was used as both polyol and crosslinker. Butanediol and/or low molecular weight polyethylene glycol (PEG300) were added to the reaction medium as a chain extender. As a magnetic particle, natural magnetite or carbonyl iron was used in various amounts (0–10%). Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), scanning electron microscope (SEM), optical microscope, and goniometer were used to characterize all composites and pure PU. A bending test was applied to investigate the shape fixity and shape recovery ratios of the samples. A range of hydrophilic/hydrophobic PU composites (water contact angle is between 56–87°) having various melting and glass transition temperatures were successfully prepared. A PU composite having a good shape recovery ratio (Rr = 96.1%) in a magnetic field was prepared using 10% magnetite. The PU composites were also thermosensitive.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)660-673
Sayfa sayısı14
DergiExpress Polymer Letters
Hacim17
Basın numarası6
DOI'lar
Yayın durumuYayınlandı - Haz 2023

Bibliyografik not

Publisher Copyright:
© BME-PT.

Finansman

Preliminary experiments of this work were supported by the State Planning Organization of Turkey [Project Number 90186] and the Istanbul Technical University Scientific Research Project Foundation (ITU BAP) [Project Number 36166]. The authors thank Assoc. Prof. Fatma Elif Genceli Güner for the optical microscopy images.

FinansörlerFinansör numarası
Istanbul Technical University Scientific Research Project Foundation
State Planning Organization of Turkey90186
Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi36166

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