Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2016 / Cilt: 16 - Sayı: 2

Microencapsulation of Commercial Scents by Melamine formaldehyde Resin and Investigation of Its Stability

Melamin Formaldehit Reçinesiyle Ticari Esans Mikrokapsülasyonu ve Kararlılığının İncelenmesi

Pages
212–221
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The obtained yield of the capsules is 85- 89%, capsule wall size is between 190 to 426 nm and active substance loss at 20 °C in the microcapsules is between 45-56 %.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, some fragrances (essential oils) which used in the softening were encapsulated by melamine formaldehyde resins.
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Key Findings & Data:Yield, the sizes and wall thicknesses of the microcapsules and their stability at room temperature were investigated.
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Conclusion & Impact:The obtained yield of the capsules is 85- 89%, capsule wall size is between 190 to 426 nm and active substance loss at 20 °C in the microcapsules is between 45-56 %.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, some fragrances (essential oils) which used in the softening were encapsulated by melamine formaldehyde resins. Yield, the sizes and wall thicknesses of the microcapsules and their stability at room temperature were investigated. Melamine formaldehyde (MF), the main component of the capsule shell, was synthesized at a ratio of 1/5 (mol/mol), at pH= 9.0, at a temperature of 80 and 90 oC, and at 30 and 45 minutes of reaction time. The optimum stable conditions of microspheres of 4 different industrial using fragrances were determined by using emulsifying agents. Emulsion mixture, MF resins and acrylic acid acrylamide copolymer were mixed in a fixed time and temperature in order to obtain microns size microcapsules. Synthesized MF resins were characterized by FT-IR spectroscopy, microcapsule size and stability of emulsified droplets were checked by optical microscope, size and wall thickness of the capsules were determined by scanning electron microscope and thermal stability of the capsules was examined by differential scanning calorimetry. The obtained yield of the capsules is 85- 89%, capsule wall size is between 190 to 426 nm and active substance loss at 20 °C in the microcapsules is between 45-56 %.

Özet

Bu çalışmada, yumuşatıcılarda kullanılan esanslar melamin formaldehit (MF) reçineleri kullanılarak mikrokapsüllendi. oluşturulan kapsüllerin verimi, boyutları, çeper kalınlığı ve oda sıcaklığındaki karalılıkları incelendi. Kapsül kabuğunun temel bileşeni olan Melamin/formaldehit (M/F, mol/mol) 1/5 oranında, pH=9,0'da, sıcaklık 80 ve 90 oC ve 30 ve 45 dakikada sentezlendi. Endüstriyel olarak kullanılan 4 farklı koku belirlenip bu kokular su içerisinde emülsiye (O/W, yağ/su) edici (dört madde) maddeler yardımıyla en kararlı halleri belirlenmiştir. Emülsiye karışım sentezlenen MF reçinesi ve akrilikasit akrilamid kopolimer bağlayıcısı ile belirli süre ve sıcaklıklarda karıştırılarak mikron boyutunda kapsüller elde edilmiştir. Sentezlenen MF reçinesinin karekterizasyonu IR spektroskopinde, emülsiye damlacıkların kararlıkları ve boyutları optik mikroskopla, kapsüllerin boyutları ve duvar kalınlığı elektron mikroskopuyla, termal kararlılıkları diferansiyel taramalı kalorimetre ile incelenmiştir. Elde edilen kapsüllerin verimi % 85-89, kapsül çeper kalınlığı 190-426 nm ve 20 oC deki aktif madde kaybı % 45-56 arasında olmuştur.

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Cite This Article

ENGİNAR, H., ÇAYIR, M. (2022). Microencapsulation of Commercial Scents by Melamine formaldehyde Resin and Investigation of Its Stability. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 16 - Sayı: 2, 212–221. https://ajindex.com/articles/430260

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