Dielectric loss factor of jute woven fabrics: effect of alkali treatment conditions
Конференцијски прилог (Објављена верзија)
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Приказ свих података о документуАпстракт
In this investigation, the influence of alkali treatment conditions on the dielectric loss factor of jute
woven fabric was studied. In that purpose, jute fabric has been alkali treated with NaOH solution
(1%, 5% and 17.5% ) at room temperature for different periods of time (5 min and 30 min). The
jute woven fabric is a heterogeneous three-phase (“fiber-moisture-air”) system, which implies the
need for investigation of jute fabric chemical composition, moisture sorption, crystallinity index
and structural parameters. The obtained results showed that with increasing the alkali treatment
severity, the hemicelluloses content decreased for 14.4-43.3%. In addition, the alkali penetration
induced fiber swelling and disrupting of the crystalline regions which result in a decreased
crystallinity index. Hemicelluloses removal together with the decreased crystallinity index
contributed to the higher availability of cellulose hydroxyl groups which in turns increases the
moisture sorption... values of alkali treated jute fabrics (for 7.2-21.0%) compared to the untreated
fabric. With increasing the alkali treatment severity, the fabric thickness and fabric weight
increased, while the fabric porosity decreased. All mentioned properties influence the dielectric loss
factor, which is an important fabric parameter related to the ability of the fabric to dissipate electric
energy or to convert the electric energy to heat. On such way, the obtained increase of the dielectric
loss factor after the alkali treatments (for 2.5-9.2 times) can be attributed to the changes in the fabric
structural characteristics and decrease in the content of hemicelluloses and crystallinity index, as
well as the increased ability for moisture sorption.
Извор:
Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019, 2019, 83-Издавач:
- Belgrade : Materials Research Society of Serbia
Финансирање / пројекти:
- Функционализација, карактеризација и примена целулозе и деривата целулозе (RS-MESTD-Basic Research (BR or ON)-172029)
- Проучавање утицаја третирања на диелектричне, оптичке, магнетне и особине површина кристалних и полимерних система (RS-MESTD-Basic Research (BR or ON)-171029)
Колекције
Институција/група
Inovacioni centarTY - CONF AU - Ivanovska, Aleksandra AU - Cerović, Dragana AU - Asanović, Koviljka AU - Kostić, Mirjana PY - 2019 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6793 AB - In this investigation, the influence of alkali treatment conditions on the dielectric loss factor of jute woven fabric was studied. In that purpose, jute fabric has been alkali treated with NaOH solution (1%, 5% and 17.5% ) at room temperature for different periods of time (5 min and 30 min). The jute woven fabric is a heterogeneous three-phase (“fiber-moisture-air”) system, which implies the need for investigation of jute fabric chemical composition, moisture sorption, crystallinity index and structural parameters. The obtained results showed that with increasing the alkali treatment severity, the hemicelluloses content decreased for 14.4-43.3%. In addition, the alkali penetration induced fiber swelling and disrupting of the crystalline regions which result in a decreased crystallinity index. Hemicelluloses removal together with the decreased crystallinity index contributed to the higher availability of cellulose hydroxyl groups which in turns increases the moisture sorption values of alkali treated jute fabrics (for 7.2-21.0%) compared to the untreated fabric. With increasing the alkali treatment severity, the fabric thickness and fabric weight increased, while the fabric porosity decreased. All mentioned properties influence the dielectric loss factor, which is an important fabric parameter related to the ability of the fabric to dissipate electric energy or to convert the electric energy to heat. On such way, the obtained increase of the dielectric loss factor after the alkali treatments (for 2.5-9.2 times) can be attributed to the changes in the fabric structural characteristics and decrease in the content of hemicelluloses and crystallinity index, as well as the increased ability for moisture sorption. PB - Belgrade : Materials Research Society of Serbia C3 - Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 T1 - Dielectric loss factor of jute woven fabrics: effect of alkali treatment conditions SP - 83 UR - https://hdl.handle.net/21.15107/rcub_technorep_6793 ER -
@conference{ author = "Ivanovska, Aleksandra and Cerović, Dragana and Asanović, Koviljka and Kostić, Mirjana", year = "2019", abstract = "In this investigation, the influence of alkali treatment conditions on the dielectric loss factor of jute woven fabric was studied. In that purpose, jute fabric has been alkali treated with NaOH solution (1%, 5% and 17.5% ) at room temperature for different periods of time (5 min and 30 min). The jute woven fabric is a heterogeneous three-phase (“fiber-moisture-air”) system, which implies the need for investigation of jute fabric chemical composition, moisture sorption, crystallinity index and structural parameters. The obtained results showed that with increasing the alkali treatment severity, the hemicelluloses content decreased for 14.4-43.3%. In addition, the alkali penetration induced fiber swelling and disrupting of the crystalline regions which result in a decreased crystallinity index. Hemicelluloses removal together with the decreased crystallinity index contributed to the higher availability of cellulose hydroxyl groups which in turns increases the moisture sorption values of alkali treated jute fabrics (for 7.2-21.0%) compared to the untreated fabric. With increasing the alkali treatment severity, the fabric thickness and fabric weight increased, while the fabric porosity decreased. All mentioned properties influence the dielectric loss factor, which is an important fabric parameter related to the ability of the fabric to dissipate electric energy or to convert the electric energy to heat. On such way, the obtained increase of the dielectric loss factor after the alkali treatments (for 2.5-9.2 times) can be attributed to the changes in the fabric structural characteristics and decrease in the content of hemicelluloses and crystallinity index, as well as the increased ability for moisture sorption.", publisher = "Belgrade : Materials Research Society of Serbia", journal = "Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019", title = "Dielectric loss factor of jute woven fabrics: effect of alkali treatment conditions", pages = "83", url = "https://hdl.handle.net/21.15107/rcub_technorep_6793" }
Ivanovska, A., Cerović, D., Asanović, K.,& Kostić, M.. (2019). Dielectric loss factor of jute woven fabrics: effect of alkali treatment conditions. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 Belgrade : Materials Research Society of Serbia., 83. https://hdl.handle.net/21.15107/rcub_technorep_6793
Ivanovska A, Cerović D, Asanović K, Kostić M. Dielectric loss factor of jute woven fabrics: effect of alkali treatment conditions. in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019. 2019;:83. https://hdl.handle.net/21.15107/rcub_technorep_6793 .
Ivanovska, Aleksandra, Cerović, Dragana, Asanović, Koviljka, Kostić, Mirjana, "Dielectric loss factor of jute woven fabrics: effect of alkali treatment conditions" in Programme and The Book of abstracts / Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019 (2019):83, https://hdl.handle.net/21.15107/rcub_technorep_6793 .