Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation
Само за регистроване кориснике
2019
Аутори
Džunuzović, JasnaStefanović, Ivan
Džunuzović, Enis
Dapčević, Aleksandra
Šešlija, Sanja
Balanč, Bojana
Lamae, Giuseppe C.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
A series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at ...the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young's modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn (R) aliphatic hyperbranched polyester can be designed for appropriate and desired application.
Кључне речи:
Polyurethane networks / Polycaprolactone / Hyperbranched polyesters / Thermal properties / Mechanical properties / MorphologyИзвор:
Progress in Organic Coatings, 2019, 137Издавач:
- Elsevier Science Sa, Lausanne
Финансирање / пројекти:
- Синтеза и карактеризација нових функционалних полимера и полимерних нанокомпозита (RS-172062)
- 0-3D наноструктуре за примену у електроници и обновљивим изворима енергије: синтеза, карактеризација и процесирање (RS-45007)
DOI: 10.1016/j.porgcoat.2019.105305
ISSN: 0300-9440
WoS: 000500944400030
Scopus: 2-s2.0-85072222298
Колекције
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Džunuzović, Jasna AU - Stefanović, Ivan AU - Džunuzović, Enis AU - Dapčević, Aleksandra AU - Šešlija, Sanja AU - Balanč, Bojana AU - Lamae, Giuseppe C. PY - 2019 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4118 AB - A series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young's modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn (R) aliphatic hyperbranched polyester can be designed for appropriate and desired application. PB - Elsevier Science Sa, Lausanne T2 - Progress in Organic Coatings T1 - Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation VL - 137 DO - 10.1016/j.porgcoat.2019.105305 ER -
@article{ author = "Džunuzović, Jasna and Stefanović, Ivan and Džunuzović, Enis and Dapčević, Aleksandra and Šešlija, Sanja and Balanč, Bojana and Lamae, Giuseppe C.", year = "2019", abstract = "A series of environmentally friendly polyurethane (PU) networks based on polycaprolactone as soft segment (SS) and Boltorn (R) aliphatic hyperbranched polyester of the second pseudo generation as crosslinking agent was prepared by a two-step polymerization in solution. The chemical structure of the PU networks was analyzed by Fourier transform infrared spectroscopy, while XRD analysis revealed that these samples are amorphous. Swelling measurements, water absorption study, dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis, mechanical tests and scanning electron microscope revealed that, swelling behavior, hydrophobicity, thermal and mechanical features and morphology of PU networks show clear dependence on polycaprolactone content. The increase of the SS content induced appearance of the microphase separated morphology, increase of thermal stability, elongation at break, hydrophobicity and swelling ability in tetrahydrofuran and toluene, but at the same time it is responsible for the decrease of crosslinking density, glass transition temperatures, rigidity, tensile strength and Young's modulus of PU networks. Scanning electron microscope images of the fracture surfaces of PU networks show that their surface is rough, irregular, with flake-like structure, where size of flakes increases with increasing SS content. These results indicate that by choosing adequate SS content, PU coatings with diverse features based on polycaprolactone and Boltorn (R) aliphatic hyperbranched polyester can be designed for appropriate and desired application.", publisher = "Elsevier Science Sa, Lausanne", journal = "Progress in Organic Coatings", title = "Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation", volume = "137", doi = "10.1016/j.porgcoat.2019.105305" }
Džunuzović, J., Stefanović, I., Džunuzović, E., Dapčević, A., Šešlija, S., Balanč, B.,& Lamae, G. C.. (2019). Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation. in Progress in Organic Coatings Elsevier Science Sa, Lausanne., 137. https://doi.org/10.1016/j.porgcoat.2019.105305
Džunuzović J, Stefanović I, Džunuzović E, Dapčević A, Šešlija S, Balanč B, Lamae GC. Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation. in Progress in Organic Coatings. 2019;137. doi:10.1016/j.porgcoat.2019.105305 .
Džunuzović, Jasna, Stefanović, Ivan, Džunuzović, Enis, Dapčević, Aleksandra, Šešlija, Sanja, Balanč, Bojana, Lamae, Giuseppe C., "Polyurethane networks based on polycaprolactone and hyperbranched polyester: Structural, thermal and mechanical investigation" in Progress in Organic Coatings, 137 (2019), https://doi.org/10.1016/j.porgcoat.2019.105305 . .