عنوان

Uçucu organik bileşik algılama uygulamaları için polimer nanofiber / poli (3,4 etilen dioksitiyofen) / metal parçacık hibrit kompozit üretimi

شماره

TL58150

زبان متن نوشتاري يا گفتاري و مانند آن

انگلیسی

عنوان اصلي

Uçucu organik bileşik algılama uygulamaları için polimer nanofiber / poli (3,4 etilen dioksitiyofen) / metal parçacık hibrit kompozit üretimi

نام عام مواد

[Thesis]

نام نخستين پديدآور

Acar, Irem

نام ساير پديدآوران

Yıldız, Ümit Hakan

نام ناشر، پخش کننده و غيره

Izmir Institute of Technology (Turkey)

تاریخ نشرو بخش و غیره

2020

متن يادداشت

50 p.

جزئيات پايان نامه و نوع درجه آن

Master's

کسي که مدرک را اعطا کرده

Izmir Institute of Technology (Turkey)

امتياز متن

2020

متن يادداشت

This study aims to produce polymer nanofiber / poly (3, 4 ethylene dioxythiophene) / metal particle hybrid composite as a bioelectronic interface for the detection of volatile organic compounds in human breath. The sensor platform consists of two layers: polymeric nanofiber structure and conductive layer. Polyurethane (PU), polycaprolactone (PCL) and poly L-lactide-co-ɛ-caprolactone (PLLCL) were selected to form polymeric nanofibers with electrospinning. For electrospinning process, solutions of polyurethane (PU) (25wt%) in DMF, polycaprolactone (PCL) (20wt%) in DCM (4) -DMF (1) and poly L-lactide-co-ɛ-caprolactone (PLLCL) (10wt%) in DCM (9) -DMF (1) are prepared. PU, PCL and PLLCL polymer solutions are subjected to 25 kV, 29kV and 25 kV electrical potential, respectively, to produce electrospinning fibers. Poly(3,4-ethylenedioxythiophene) (PEDOT) and multi-walled carbon nanotubes (MWCNTs) are used to produce conductive layers on PU, PCL and PLLCL polymer nanofibers. The produced sensor platforms are tested by the electrochemical station, which records the electrical current change over time. The sensing mechanism is assumed to be the adsorption of VOCs to the conductive PEDOT and CNT layer, thus blocking the electron current on the PEDOT and CNT network and causing resistance change. More clearly; swelling of the polymer structure in the sensor causes destruction in the upper layer and micro-dimensional cracks in the PEDOT and CNT network, increasing resistance to electron flow and decreasing current. Organic volatile compounds (acetone, toluene, ethanol, isopene etc.) are detected from ppm to ppb range and reproducible and reliable responses are recorded.

اصطلاح موضوعی

Chemistry

اصطلاح موضوعی

Nanomaterials

اصطلاح موضوعی

Volatile organic compounds--VOCs

مستند نام اشخاص تاييد نشده

Acar, Irem

مستند نام اشخاص تاييد نشده

Yıldız, Ümit Hakan

مستند نام تنالگان تاييد نشده

Izmir Institute of Technology (Turkey)

نام الکترونيکي

فرمت انتشار

p

نوع ماده

[Thesis]

کد کاربرگه

276903

سطح دسترسي

a

تكميل شده

Y