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Effects of Kaolin Powder and Borax Addition on Adhesion Properties of Soy Protein Isolate-Based Adhesives Budhijanto, Budhijanto; Widodo, Theresia Winona Rosari; Ramadhani, Gilang Afif Setya
Eksergi Vol 21, No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.12137

A low-cost strategy was developed to improve the adhesion properties and long shelf life of soy protein isolate-based adhesive, by using kaolin powder as filler and borax as an antifungal. Soy protein bioadhesive will be synthesized through denaturation using Sodium Lauryl Sulfate, followed by crosslinking using epoxy resin as a crosslinker, kaolin powder addition as filler, and borax addition to inhibit the fungal growth. Some analysis such as viscosity, solid content, dry shear strength, wet shear strength, FTIR Spectroscopy, SEM analysis, and shelf life were done to measure the adhesion properties of the bioadhesive. The result shows that the best shear strength, both dry and wet was obtained by adding 1.5% w/w kaolin powder with shear strength resulted 2,2684 MPa and with addition 2% w/w borax increased the shear strength up to 2,3207 MPa. Borax addition had been proven in improving the water resistance of the adhesive also inhibit fungal growth resulting extended the shelf life of the adhesive.

Analisis Pengaruh Penambahan Magnesium Oksida terhadap Sifat Mekanis Bioadhesif Berbasis Kitosan-Karagenan Amanda, Monica Putri; Budhijanto; Ramadhani, Gilang Afif Setya
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.14656

This study investigates the effect of magnesium oxide (MgO) as a filler in enhancing the bioadhesive properties of chitosan and carrageenan-based adhesives. The primary focus is on improving tensile strength, viscosity, solid content, and thermal properties. The results indicate that the addition of 0.75% w/v MgO significantly increased tensile strength from 9.76 kPa to 21.76 kPa and viscosity from 34.26 cP to 617 cP with a 0.5% w/v MgO addition. The solid content also increased from 9.81% to 13.19% with increased MgO concentration. The addition of benzoyl peroxide (BPO) reduced curing time, enhancing process efficiency. Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy confirmed improvements in structural and chemical stability, while Differential Scanning Calorimetry showed better curing efficiency. This study suggests MgO as a potential filler to improve mechanical properties and adhesion of bioadhesives, relevant for medical applications.

Analisis Pengaruh Penambahan Magnesium Oksida terhadap Sifat Mekanis Bioadhesif Berbasis Kitosan-Karagenan Amanda, Monica Putri; Budhijanto; Ramadhani, Gilang Afif Setya
Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i1.14656

This study investigates the effect of magnesium oxide (MgO) as a filler in enhancing the bioadhesive properties of chitosan and carrageenan-based adhesives. The primary focus is on improving tensile strength, viscosity, solid content, and thermal properties. The results indicate that the addition of 0.75% w/v MgO significantly increased tensile strength from 9.76 kPa to 21.76 kPa and viscosity from 34.26 cP to 617 cP with a 0.5% w/v MgO addition. The solid content also increased from 9.81% to 13.19% with increased MgO concentration. The addition of benzoyl peroxide (BPO) reduced curing time, enhancing process efficiency. Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy confirmed improvements in structural and chemical stability, while Differential Scanning Calorimetry showed better curing efficiency. This study suggests MgO as a potential filler to improve mechanical properties and adhesion of bioadhesives, relevant for medical applications.

Development of ecotourism in Blubuk Village through sustainable environmental management Aristya, Ganies Riza; Wulandari, Mutiara Tri; Dimas, Abimanyu; Sritanjung, Opi; Ramadhani, Gilang Afif Setya; Ishana, Aurelia Araya; Fadhlurrohman, Galih Dzaky; Azzahira, Faiha Azka; Muliawati, Adina; Sofyantoro, Fajar
Community Empowerment Vol 10 No 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.12321

Blubuk Hamlet, Kulon Progo is a rural area with great potential in agriculture and ecotourism. However, the community faces challenges in maximizing this potential due to limited knowledge. This community service program aims to empower the local community through waste utilization to have economic value. The program uses various methods, including training, participatory mapping, and focus group discussions (FGDs). The main activities include maggot cultivation for fish feed production, biodiesel production from used cooking oil, eco-enzyme production from organic waste, and ecotourism planning. The results showed that 80% of training participants successfully understood maggot cultivation techniques, collectively produced 3 kg of maggots, and produced 1 kg of fish pellets in two months. Eco-enzyme production from household organic waste reduced waste by 40%, with 85% of participants using the product as a natural cleaner and fertilizer. Biodiesel production produced 2 liters of biodiesel from 5 liters of used cooking oil, which was tested and used as an alternative fuel. This program successfully introduced the concept of community-based ecotourism management and increased public understanding of the economic potential that can be developed from local natural resources.

Effects of Kaolin Powder and Borax Addition on Adhesion Properties of Soy Protein Isolate-Based Adhesives Budhijanto, Budhijanto; Widodo, Theresia Winona Rosari; Ramadhani, Gilang Afif Setya
Eksergi Vol 21 No 3 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i3.12137

A low-cost strategy was developed to improve the adhesion properties and long shelf life of soy protein isolate-based adhesive, by using kaolin powder as filler and borax as an antifungal. Soy protein bioadhesive will be synthesized through denaturation using Sodium Lauryl Sulfate, followed by crosslinking using epoxy resin as a crosslinker, kaolin powder addition as filler, and borax addition to inhibit the fungal growth. Some analysis such as viscosity, solid content, dry shear strength, wet shear strength, FTIR Spectroscopy, SEM analysis, and shelf life were done to measure the adhesion properties of the bioadhesive. The result shows that the best shear strength, both dry and wet was obtained by adding 1.5% w/w kaolin powder with shear strength resulted 2,2684 MPa and with addition 2% w/w borax increased the shear strength up to 2,3207 MPa. Borax addition had been proven in improving the water resistance of the adhesive also inhibit fungal growth resulting extended the shelf life of the adhesive.

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