Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite
Само за регистроване кориснике
2014
Аутори
Ben Hasan, Somaya AhmedStojanović, Dušica
Kojović, Aleksandar
Janković-Častvan, Ivona
Janaćković, Đorđe
Uskoković, Petar
Aleksić, Radoslav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
This study presents an investigation of the effects of the processing conditions on the uniformity, morphology and structure of patterned nanofibrous mats of electrospun poly(vinyl butyral)/sepiolite (PVB/Sep) nanocomposite fibers, which is a novel system for applications in materials for antiballistic protection, biomedical scaffolds and sorption for water purification. Aqueous suspensions of sepiolite exhibit thixotropic behavior because of their fibrous structure, porosity, large specific surface area and the presence of silanol groups on the surface. Functionalization of the sepiolite fibers in an aqueous thixotropic gel was realized on the surface of individual fibers using amino silanes as coupling agents. Different contents (3 wt%, 30 wt% and 50 wt%) of neat and modified sepiolite fibers were dispersed by ultrasonic irradiation in an ethanolic solution of PVB and were used to obtain nanocomposite fibers by electrospinning. The modified PVB/Sep nanocomposite fibers showed a decre...ase in the mean fiber diameter by about 75% and an increase in the composite storage modulus by about 31% in comparison to the neat PVB fibers. The optimal uniformity of the diameter of the fabricated.nanofibers was obtained using a low flow rate (0.5 mL/h), high collector distance (15 cm) and a constant applied voltage of 24 kV. The advantages of the systems lay primarily in improved mechanical properties, which enabled proper manipulation through the achieved mechanical integrity of nanofilter structures in real applications.
Кључне речи:
Sepiolite thixotropic gel / Ultrasonic irradiation / Patterned nanofibrous mats / Dynamic mechanical analysisИзвор:
Ceramics International, 2014, 40, 1, 1139-1146Издавач:
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- Развој опреме и процеса добијања полимерних композитних материјала са унапред дефинисаним функционалним својствима (RS-MESTD-Technological Development (TD or TR)-34011)
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
DOI: 10.1016/j.ceramint.2013.06.115
ISSN: 0272-8842
WoS: 000330820500146
Scopus: 2-s2.0-84887625924
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Ben Hasan, Somaya Ahmed AU - Stojanović, Dušica AU - Kojović, Aleksandar AU - Janković-Častvan, Ivona AU - Janaćković, Đorđe AU - Uskoković, Petar AU - Aleksić, Radoslav PY - 2014 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2794 AB - This study presents an investigation of the effects of the processing conditions on the uniformity, morphology and structure of patterned nanofibrous mats of electrospun poly(vinyl butyral)/sepiolite (PVB/Sep) nanocomposite fibers, which is a novel system for applications in materials for antiballistic protection, biomedical scaffolds and sorption for water purification. Aqueous suspensions of sepiolite exhibit thixotropic behavior because of their fibrous structure, porosity, large specific surface area and the presence of silanol groups on the surface. Functionalization of the sepiolite fibers in an aqueous thixotropic gel was realized on the surface of individual fibers using amino silanes as coupling agents. Different contents (3 wt%, 30 wt% and 50 wt%) of neat and modified sepiolite fibers were dispersed by ultrasonic irradiation in an ethanolic solution of PVB and were used to obtain nanocomposite fibers by electrospinning. The modified PVB/Sep nanocomposite fibers showed a decrease in the mean fiber diameter by about 75% and an increase in the composite storage modulus by about 31% in comparison to the neat PVB fibers. The optimal uniformity of the diameter of the fabricated.nanofibers was obtained using a low flow rate (0.5 mL/h), high collector distance (15 cm) and a constant applied voltage of 24 kV. The advantages of the systems lay primarily in improved mechanical properties, which enabled proper manipulation through the achieved mechanical integrity of nanofilter structures in real applications. PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite EP - 1146 IS - 1 SP - 1139 VL - 40 DO - 10.1016/j.ceramint.2013.06.115 ER -
@article{ author = "Ben Hasan, Somaya Ahmed and Stojanović, Dušica and Kojović, Aleksandar and Janković-Častvan, Ivona and Janaćković, Đorđe and Uskoković, Petar and Aleksić, Radoslav", year = "2014", abstract = "This study presents an investigation of the effects of the processing conditions on the uniformity, morphology and structure of patterned nanofibrous mats of electrospun poly(vinyl butyral)/sepiolite (PVB/Sep) nanocomposite fibers, which is a novel system for applications in materials for antiballistic protection, biomedical scaffolds and sorption for water purification. Aqueous suspensions of sepiolite exhibit thixotropic behavior because of their fibrous structure, porosity, large specific surface area and the presence of silanol groups on the surface. Functionalization of the sepiolite fibers in an aqueous thixotropic gel was realized on the surface of individual fibers using amino silanes as coupling agents. Different contents (3 wt%, 30 wt% and 50 wt%) of neat and modified sepiolite fibers were dispersed by ultrasonic irradiation in an ethanolic solution of PVB and were used to obtain nanocomposite fibers by electrospinning. The modified PVB/Sep nanocomposite fibers showed a decrease in the mean fiber diameter by about 75% and an increase in the composite storage modulus by about 31% in comparison to the neat PVB fibers. The optimal uniformity of the diameter of the fabricated.nanofibers was obtained using a low flow rate (0.5 mL/h), high collector distance (15 cm) and a constant applied voltage of 24 kV. The advantages of the systems lay primarily in improved mechanical properties, which enabled proper manipulation through the achieved mechanical integrity of nanofilter structures in real applications.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite", pages = "1146-1139", number = "1", volume = "40", doi = "10.1016/j.ceramint.2013.06.115" }
Ben Hasan, S. A., Stojanović, D., Kojović, A., Janković-Častvan, I., Janaćković, Đ., Uskoković, P.,& Aleksić, R.. (2014). Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite. in Ceramics International Elsevier Sci Ltd, Oxford., 40(1), 1139-1146. https://doi.org/10.1016/j.ceramint.2013.06.115
Ben Hasan SA, Stojanović D, Kojović A, Janković-Častvan I, Janaćković Đ, Uskoković P, Aleksić R. Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite. in Ceramics International. 2014;40(1):1139-1146. doi:10.1016/j.ceramint.2013.06.115 .
Ben Hasan, Somaya Ahmed, Stojanović, Dušica, Kojović, Aleksandar, Janković-Častvan, Ivona, Janaćković, Đorđe, Uskoković, Petar, Aleksić, Radoslav, "Preparation and characterization of poly(vinyl butyral) electrospun nanocomposite fibers reinforced with ultrasonically functionalized sepiolite" in Ceramics International, 40, no. 1 (2014):1139-1146, https://doi.org/10.1016/j.ceramint.2013.06.115 . .