Hanurogo, Taufiq Byomantoro (2019) Analisa Pengaruh Variasi Temperatur Reaksi terhadap Morfologi dan Sifat Termal Mikrokapsul Poly(Urea-Formaldehid) untuk Aplikasi Self-Healing Coating. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
02511540000039-Undergraduate_Thesis.pdf Download (4MB) | Preview |
Abstract
Baja merupakan jenis material yang sering digunakan dalam dunia industri. Tetapi seiring berjalannya waktu, baja akan mengalami proses korosi. Nilai kerugian akibat korosi pada industri di seluruh dunia sekitar US$2,5 triliun. Pelapisan pada logam (coating) merupakan metode yang paling murah dan sering digunakan. Meskipun demikian, lapisan tersebut dapat rusak akibat kerusakan mekanis seperti goresan sehingga air dan zat kimia korosif dapat masuk ke permukaan logam melalui kerusakan lapisan tersebut. Untuk menimalisir hal tersebut, maka dilakukan pengaplikasian self-healing coating berbasis kapsul. Pada penelitian ini menggunakan metode mikroenkapsulasi antara urea, formaldehid 37%, dan minyak biji rami untuk menghasilkan mikrokapsul poly(urea-formaldehid) yang berisi minyak biji rami. Penelitian ini bertujuan menganalisa pengaruh variasi temperatur terhadap morfologi dan sifat termal mikrokapsul poly(urea-formaldehid) untuk aplikasi self healing dengan variasi temperatur reaksi 40oC, 50oC, 60oC, dan 70oC. Hasil dari karakterisasi FTIR didapatkan ikatan N-H, C-H, C=O, dan C-O. Dari hasil karakterisasi mikroskop optik didapatkan diameter mikrokapsul pada temperatur reaksi 40, 50, 60, dan 70oC secara berurutan dengan nilai 65,3 ± 18,8; 27,4 ± 11; 29,1 ± 13,8 dan 64,4 ± 13,7 μm dan terlihat jumlah mikrokapsul yang semakin banyak seiring dengan meningkatnya temperatur. Hasildari karakterisasi SEM pada temperatur 50oC menunjukkan terdapat beberapa mikrokapsul yang terbentuk dan juga hancur akibat dari proses pencucian dan pengeringan. Hasil dari pengujian TGA pada mikrokapsul dengan temperatur reaksi 40oC menunjukkan sudah terjadi penurunan berat dibawah temperatur 187oC dan pada temperatur reaksi 50oC dan 70oC tidak mengalami penurunan berat yang signifikan sampai temperatur 225oC.
================================================================================================================================
Steel is a type of material that is often used in the industrial applications. But steel will undergo a process of corrosion and it is one of the problems faced by industries. Coatings are applied to metal surfaces to protect corrosion. The value of losses due to corrosion in industries around the world is around US $ 2.5 trillion. Coating on metal (coating) is the cheapest and often used method. However, the coating can be damaged by mechanical damage such as scratches so water and corrosive chemicals can enter the metal surface through the damaged layer. To minimize this problem, the application of self-healing coating capsule-based is one of the solutions. In this study the microencapsulation method between urea, formaldehyde 37%, and linseed oil used to produce microcapsules poly (urea-formaldehyde) containing linseed oil. This study set out to investigate the effect of reaction temperature on the morphology and thermal properties of microcapsule poly (urea-formaldehyde) for the application of self healing with a reaction temperature variation of 40oC, 50oC, 60oC, and 70oC. Further analysis showed from Fourier Transform Infrared Spectroscopy (FTIR) characterization obtained N-H, C-H, C = O, and C-O bonds. Analysis of optical microscope characterization showed the diameter of microcapsules with reaction temperature of 40, 50, 60, dan 70oC were obtained with values 65,3 ± 18,8; 27,4 ± 11; 29,1 ± 13,8; dan 64,4 ± 13,7 μm respectively and the number of microcapsules increased as the reaction temperature increased. The analysis of Scanning Electron Microscopy (SEM) characterization at 50oC showed that there are several microcapsules formed and also broken due to the washing and drying process. The results of the TGA characterization with a reaction temperature of 40oC showed that started to loss of weight until 187oC. Microcapsules at the reaction temperature of 50oC and 70oC are stable until 225oC.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSMt 620.112 23 Han a-1 2019 |
| Uncontrolled Keywords: | formaldehid, mikroenkapsulasi, mikrokapsul, temperatur reaksi, formaldehyde, microencapsulation, microcapsule, reaction temperature, urea |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives T Technology > TP Chemical technology > TP1140 Polymers |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Taufiq Byomantoro Hanurogo |
| Date Deposited: | 29 May 2023 02:19 |
| Last Modified: | 29 May 2023 02:19 |
| URI: | http://repository.its.ac.id/id/eprint/65187 |
Actions (login required)
 |
View Item |