Studying on the effect of ph on volume phase transition for composite hydrogel using by fluorescence technique

Demet Kaya Aktas¸

Studying on the effect of ph on volume phase transition for composite hydrogel using by fluorescence technique

Demet Kaya Aktas¸^*

^*Corresponding author for this work

Department of Physics Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Steady-state fluorescence (SSF) technique was employed for studying swelling of poly(acrylamide-co-acrylic acid) (P(AAm-co-AAc)) composite gels in various pH. Disc shaped composite gels were prepared by free-radical crosslinking copolymerization of P(AAm-co-AAc). N, N'-methylenebis (acrylamide) (BIS) and ammonium persulfate (APS) were used as crosslinker and initiator, respectively. Pyranine 4 was introduced as a fluorescence probe. P(AAm-co-AAc) composite gels dried before using for swelling experiments. Fluorescence intensity of pyranine 4 was monitored during in situ swelling processes of composite gels. It was observed that fluorescence intensity values decreased as swelling is proceeded. Gravimetrical and volumetrical experiments were also performed. Li-Tanaka equation was used to determine the swelling time constants, τ and cooperative diffusion coefficients, D from intensity variations during the swelling processes. It was shown that swelling time constants, τ decreased and diffusion coefficients, D increased as the pH values are increased.

Original language	English
Title of host publication	Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015
Publisher	Avestia Publishing
ISBN (Print)	9781927877173
Publication status	Published - 2015
Event	Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015 - Barcelona, Spain Duration: 20 Jul 2015 → 21 Jul 2015

Publication series

Name	Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering
ISSN (Electronic)	2369-8136

Conference

Conference	Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015
Country/Territory	Spain
City	Barcelona
Period	20/07/15 → 21/07/15

Bibliographical note

Publisher Copyright:
© Avestia Publishing, 2015.

Keywords

Fluorescence
Hydrogels
Swelling
pH

Cite this

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title = "Studying on the effect of ph on volume phase transition for composite hydrogel using by fluorescence technique",

abstract = "Steady-state fluorescence (SSF) technique was employed for studying swelling of poly(acrylamide-co-acrylic acid) (P(AAm-co-AAc)) composite gels in various pH. Disc shaped composite gels were prepared by free-radical crosslinking copolymerization of P(AAm-co-AAc). N, N'-methylenebis (acrylamide) (BIS) and ammonium persulfate (APS) were used as crosslinker and initiator, respectively. Pyranine 4 was introduced as a fluorescence probe. P(AAm-co-AAc) composite gels dried before using for swelling experiments. Fluorescence intensity of pyranine 4 was monitored during in situ swelling processes of composite gels. It was observed that fluorescence intensity values decreased as swelling is proceeded. Gravimetrical and volumetrical experiments were also performed. Li-Tanaka equation was used to determine the swelling time constants, τ and cooperative diffusion coefficients, D from intensity variations during the swelling processes. It was shown that swelling time constants, τ decreased and diffusion coefficients, D increased as the pH values are increased.",

keywords = "Fluorescence, Hydrogels, Swelling, pH",

author = "Aktas¸, {Demet Kaya}",

note = "Publisher Copyright: {\textcopyright} Avestia Publishing, 2015.; Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015 ; Conference date: 20-07-2015 Through 21-07-2015",

year = "2015",

language = "English",

isbn = "9781927877173",

series = "Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering",

publisher = "Avestia Publishing",

booktitle = "Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015",

address = "Canada",

}

Aktas¸, DK 2015, Studying on the effect of ph on volume phase transition for composite hydrogel using by fluorescence technique. in Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015. Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, Avestia Publishing, Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015, Barcelona, Spain, 20/07/15.

Studying on the effect of ph on volume phase transition for composite hydrogel using by fluorescence technique. / Aktas¸, Demet Kaya.
Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015. Avestia Publishing, 2015. (Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Studying on the effect of ph on volume phase transition for composite hydrogel using by fluorescence technique

AU - Aktas¸, Demet Kaya

N1 - Publisher Copyright: © Avestia Publishing, 2015.

PY - 2015

Y1 - 2015

N2 - Steady-state fluorescence (SSF) technique was employed for studying swelling of poly(acrylamide-co-acrylic acid) (P(AAm-co-AAc)) composite gels in various pH. Disc shaped composite gels were prepared by free-radical crosslinking copolymerization of P(AAm-co-AAc). N, N'-methylenebis (acrylamide) (BIS) and ammonium persulfate (APS) were used as crosslinker and initiator, respectively. Pyranine 4 was introduced as a fluorescence probe. P(AAm-co-AAc) composite gels dried before using for swelling experiments. Fluorescence intensity of pyranine 4 was monitored during in situ swelling processes of composite gels. It was observed that fluorescence intensity values decreased as swelling is proceeded. Gravimetrical and volumetrical experiments were also performed. Li-Tanaka equation was used to determine the swelling time constants, τ and cooperative diffusion coefficients, D from intensity variations during the swelling processes. It was shown that swelling time constants, τ decreased and diffusion coefficients, D increased as the pH values are increased.

AB - Steady-state fluorescence (SSF) technique was employed for studying swelling of poly(acrylamide-co-acrylic acid) (P(AAm-co-AAc)) composite gels in various pH. Disc shaped composite gels were prepared by free-radical crosslinking copolymerization of P(AAm-co-AAc). N, N'-methylenebis (acrylamide) (BIS) and ammonium persulfate (APS) were used as crosslinker and initiator, respectively. Pyranine 4 was introduced as a fluorescence probe. P(AAm-co-AAc) composite gels dried before using for swelling experiments. Fluorescence intensity of pyranine 4 was monitored during in situ swelling processes of composite gels. It was observed that fluorescence intensity values decreased as swelling is proceeded. Gravimetrical and volumetrical experiments were also performed. Li-Tanaka equation was used to determine the swelling time constants, τ and cooperative diffusion coefficients, D from intensity variations during the swelling processes. It was shown that swelling time constants, τ decreased and diffusion coefficients, D increased as the pH values are increased.

KW - Fluorescence

KW - Hydrogels

KW - Swelling

KW - pH

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M3 - Conference contribution

AN - SCOPUS:85044991152

SN - 9781927877173

T3 - Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering

BT - Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015

PB - Avestia Publishing

T2 - Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015

Y2 - 20 July 2015 through 21 July 2015

ER -

Studying on the effect of ph on volume phase transition for composite hydrogel using by fluorescence technique

Abstract

Publication series

Conference

Bibliographical note

Keywords

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