Preparation of Composite Hydrogels with Silica Nanoparticles by Photoinitiated Polymerization Reaction

Nurcan Karaca

Article Details

Preparation of Composite Hydrogels with Silica Nanoparticles by Photoinitiated Polymerization Reaction

Authors:

Nurcan Karaca

Publisher:

Afyon Kocatepe University

Main Topics:

Kimya Mühendisliği

Journal:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 1, pp.198-207

Document Type:

Article

Publication Date:

1/2023

Document Language:

English

Document ID (Org No.):

2001284428

pISSN:

2149-3367

Keywords:

Abstract:

 In this study, 3-mercaptopropyl trimethoxysilane MPTMS modified silica nanoparticles SiO2-MPTMS were successfully prepared. The average size of SiO2-MPTMS nanoparticles was measured by Dynamic Light Scattering DLS as 341 nm in ethanol, while Scanning Transmission Electron Microscopy STEM analyzes confirmed that the nanoparticles were nano-sized and revealed that their shapes were spherical. Then, 3D nanocomposite hydrogels were prepared by incorporating SiO2-MPTMS nanoparticles in various ratios 0.25, 0.50, 0.75 and 1.0 wt  into an acrylate resin consisting of N-isopropyl acrylamide NIPAM and polyethylene glychol diacrylate PEGDA; as a crosslinker by the photoinitiated polymerization reaction with Dimethoxy-2-phenylacetophenone DMPA; as a photoinitiator. By Thermal Gravimetric Analyzer TGA measurements, it was determined that the nanocomposite hydrogels maintained their thermal stability up to 330 0C and the thermal degradation steps were close to each other. Scanning Electron Microscopy SEM study showed that the neat and nanocomposite hydrogels morphological structures were in the porous and smooth scaffold, and also that the SiO2-MPTMS nanoparticles 0.50 wt  were homogeneously distributed in the network structures of hydrogels, localized in the bonds.

 In this study, 3-mercaptopropyl trimethoxysilane MPTMS modified silica nanoparticles SiO2-MPTMS were successfully prepared. The average size of SiO2-MPTMS nanoparticles was measured by Dynamic Light Scattering DLS as 341 nm in ethanol, while Scanning Transmission Electron Microscopy STEM analyzes confirmed that the nanoparticles were nano-sized and revealed that their shapes were spherical. Then, 3D nanocomposite hydrogels were prepared by incorporating SiO2-MPTMS nanoparticles in various ratios 0.25, 0.50, 0.75 and 1.0 wt  into an acrylate resin consisting of N-isopropyl acrylamide NIPAM and polyethylene glychol diacrylate PEGDA; as a crosslinker by the photoinitiated polymerization reaction with Dimethoxy-2-phenylacetophenone DMPA; as a photoinitiator. By Thermal Gravimetric Analyzer TGA measurements, it was determined that the nanocomposite hydrogels maintained their thermal stability up to 330 0C and the thermal degradation steps were close to each other. Scanning Electron Microscopy SEM study showed that the neat and nanocomposite hydrogels morphological structures were in the porous and smooth scaffold, and also that the SiO2-MPTMS nanoparticles 0.50 wt  were homogeneously distributed in the network structures of hydrogels, localized in the bonds.

 In this study, 3-mercaptopropyl trimethoxysilane MPTMS modified silica nanoparticles SiO2-MPTMS were successfully prepared. The average size of SiO2-MPTMS nanoparticles was measured by Dynamic Light Scattering DLS as 341 nm in ethanol, while Scanning Transmission Electron Microscopy STEM analyzes confirmed that the nanoparticles were nano-sized and revealed that their shapes were spherical. Then, 3D nanocomposite hydrogels were prepared by incorporating SiO2-MPTMS nanoparticles in various ratios 0.25, 0.50, 0.75 and 1.0 wt  into an acrylate resin consisting of N-isopropyl acrylamide NIPAM and polyethylene glychol diacrylate PEGDA; as a crosslinker by the photoinitiated polymerization reaction with Dimethoxy-2-phenylacetophenone DMPA; as a photoinitiator. By Thermal Gravimetric Analyzer TGA measurements, it was determined that the nanocomposite hydrogels maintained their thermal stability up to 330 0C and the thermal degradation steps were close to each other. Scanning Electron Microscopy SEM study showed that the neat and nanocomposite hydrogels morphological structures were in the porous and smooth scaffold, and also that the SiO2-MPTMS nanoparticles 0.50 wt  were homogeneously distributed in the network structures of hydrogels, localized in the bonds.

 Bu çalışmada, 3-merkaptopropil trimetoksisilan MPTMS ile modifiye edilmiş silika nanopartiküller, SiO2-MPTMS başarı ile hazırlandı. Dinamik Işık Saçılımı DLS ile SiO2-MPTMS nanopartiküllerin ortalama boyutu 341 nm olarak etanolde ölçülürken, Taramalı Geçirimli Elektron Mikroskobu STEM analizleri nanopartiküllerin nano boyutlu olduğunu doğruluyarak partikül şekillerinin küresel yapıda olduğunu gösterdi. Daha sonra, ağırlıkça çeşitli oranlarda  0,25,  0,50,  0,75 ve  1,0 SiO2-MPTMS nanopartikülleri içeren N-izopropil akrilamid NIPAM ve polietilen glikol diakrilat PEGDA; çapraz bağlayıcı reçinelerinden oluşan formülasyonlar, Dimetoksi-2-fenilasetofenon DMPA; fotobaşlatıcı varlığında fotobaşlatılmış polimerizasyon reaksiyonuna uğratılarak 3D yapılı nanokompozit hidrojeller hazırlandı. Termal Gravimetrik Analizör TGA ile, nanokompozit hidrojellerin termal kararlılıklarının 330 0C ye kadar devam ettiği ve termal bozulma adımlarının, birbirleri ile yakın sıcaklık değerlerinde olduğu tespit edildi. Taramalı Elektron Mikroskobu SEM analizi ile saf ve nanokompozit hidrojellerin morfolojik yapıları incelendi ve bu malzemelerin, gözenekli ve pürüzsüz yapı iskeletine sahip oldukları ortaya koyuldu. Ayrıca, SiO2-MPTMS nanopartiküllerinin 0,50 ağ yapı içerisinde, bağlarda lokalize olarak, homojen bir şekilde dağıldığı görüldü.

Article Details

Preparation of Composite Hydrogels with Silica Nanoparticles by Photoinitiated Polymerization Reaction

Authors:

Nurcan Karaca

Publisher:

Afyon Kocatepe University

Main Topics:

Kimya Mühendisliği

Journal:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 1, pp.198-207

Document Type:

Article

Publication Date:

1/2023

Document Language:

English

Document ID (Org No.):

2001284428

pISSN:

2149-3367

composite hydrogels

silica nanoparticles

3-mercaptopropyl trimethoxysilane

N-isopropylacrylamide

polyethylene glycol diacrylate

kompozit hidrojeller

silika nanopartiküller

3-merkaptopropil trimetoksisilan

N-izopropilakrilamit

polietilen glikol diakrilat

Issues

Article Details

Authors: Nurcan Karaca

Publisher: Afyon Kocatepe University

Main Topics: Kimya Mühendisliği

Journal: Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 1, pp.198-207

Document Type: Article

Publication Date: 1/2023

Document Language: English

Document ID (Org No.): 2001284428

pISSN: 2149-3367

Issues

Authors:

Nurcan Karaca

Publisher:

Afyon Kocatepe University

Main Topics:

Kimya Mühendisliği

Journal:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi Vol.23 Issue 1, pp.198-207

Document Type:

Article

Publication Date:

1/2023

Document Language:

English

Document ID (Org No.):

2001284428

pISSN:

2149-3367