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All Journal Jurnal Hortikultura Indonesia (JHI) CHEMICA Jurnal Teknik Kimia Seminar Nasional Teknik Kimia Kejuangan REKAYASA Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Kultivasi Indonesian Journal of Chemistry Chemistry Indonesian Journal of Chemical Research Jurnal Teknologi Jurnal Pemberdayaan: Publikasi Hasil Pengabdian Kepada Masyarakat PRIMA: Journal of Community Empowering and Services Agro Sintesa : Jurnal Ilmu Budidaya Pertanian Formosa Journal of Applied Sciences (FJAS) Jurnal Pengelolaan Perkebunan (JPP) Jurnal Rekayasa Proses
Saputri, Lestari Hetalesi
Politeknik LPP Yogyakarta
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Journal : CHEMICA Jurnal Teknik Kimia

 1 
Optimasi Proses Hidrolisis Vinasse Sebagai Bahan Baku Resin Polimer yang Ramah Lingkungan Saputri, Lestari Hetalesi
CHEMICA: Jurnal Teknik Kimia Vol 3, No 1 (2016): Juni 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.497 KB) | DOI: 10.26555/chemica.v3i1.5663

Abstract

Vinasse contains some amine, carboxyl and hydroxyl groups in it’s organic acids. These groups when being combined with other materials can be synthesized into a raw material of coating material. This research aims to break vinasse chain by hydrolysis into amino acids. Hydrolysis is carried out at 110 °C  with a residence time of 60-150 minutes (with 30-minute intervals). In addition, the comparison between the volume of vinasse and HCl is  1: 1, 1: 2, 1: 3 and 1: 4. Then the material from the hydrolysis are analyzed their groups. Quantitative analysis is required to determine the composition of vinasse that will be added in the next polimerization processing. The result showed that the optimum conditions of hydrolysis process is at 2 hours and volume HCl with the ratio of 1: 3. FTIR analysis indicated the presence of carboxyl and amines groups on hydrolyzate. The long term  goal of this research is the use of vinasse as a coating material derived from biomaterials, as well as renewable materials. It could be expected that hydrolysis under acidic conditions can be an initial step to a coating material with vinasse as a raw material base. Keywords:  Vinasse, Polimer Resin, Hydrolysis, Coating Material.
Kinetika Reaksi Poliesterifikasi Hidrolisat Shellac dan Anhidrida Ftalat Ditinjau Dari Reaktivitas Gugus Hidroksil Saputri, Lestari Hetalesi; Rochmadi, Rochmadi; Budhijanto, Budhijanto
CHEMICA: Jurnal Teknik Kimia Vol 2, No 2 (2015): Desember 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.773 KB) | DOI: 10.26555/chemica.v2i2.4569

Abstract

This research presents polyesterification kinetics for shellac hydrolizate-phtalic anhydride. The polyesterification kinetics is proposed by assuming that the reaction  in ideal system, whereas the reactivity of the OH groups are considered different. Polyesterification was started from purification of shelllac by hydrolisis process. Hydrolisis was done by dissolving seedlac into NaOH solution and acidification with HCl. Polyesterification was conducted by reacting shellac hydrolizate with phtalic anhydride. Both of these materials were reacted in a three necked flask under vacuum condition. The reaction was conducted in temperature range of 130-170 0C and samples were taken every 30 minutes for a total of 5 hours, to determine the COOH concentration by titration. The investigation of reaction kinetic showed that reaction model  could describe the kinetic of polyesterification shellac hydrolizate-phthalic anhydride, especially for temperature below 150 0C. The reaction rate constants were obtained as follows:k1 = 19.7 e (-3802.82/T) g/mgek.menitk2 = 29.4 e (-4062.30/T) g/mgek.menit
Optimasi Proses Hidrolisis Vinasse Sebagai Bahan Baku Resin Polimer yang Ramah Lingkungan Lestari Hetalesi Saputri
CHEMICA: Jurnal Teknik Kimia Vol 3, No 1 (2016): Juni 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.497 KB) | DOI: 10.26555/chemica.v3i1.5663

Abstract

Vinasse contains some amine, carboxyl and hydroxyl groups in it’s organic acids. These groups when being combined with other materials can be synthesized into a raw material of coating material. This research aims to break vinasse chain by hydrolysis into amino acids. Hydrolysis is carried out at 110 °C  with a residence time of 60-150 minutes (with 30-minute intervals). In addition, the comparison between the volume of vinasse and HCl is  1: 1, 1: 2, 1: 3 and 1: 4. Then the material from the hydrolysis are analyzed their groups. Quantitative analysis is required to determine the composition of vinasse that will be added in the next polimerization processing. The result showed that the optimum conditions of hydrolysis process is at 2 hours and volume HCl with the ratio of 1: 3. FTIR analysis indicated the presence of carboxyl and amines groups on hydrolyzate. The long term  goal of this research is the use of vinasse as a coating material derived from biomaterials, as well as renewable materials. It could be expected that hydrolysis under acidic conditions can be an initial step to a coating material with vinasse as a raw material base. Keywords:  Vinasse, Polimer Resin, Hydrolysis, Coating Material.
Kinetika Reaksi Poliesterifikasi Hidrolisat Shellac dan Anhidrida Ftalat Ditinjau Dari Reaktivitas Gugus Hidroksil Lestari Hetalesi Saputri; Rochmadi Rochmadi; Budhijanto Budhijanto
CHEMICA: Jurnal Teknik Kimia Vol 2, No 2 (2015): Desember 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.773 KB) | DOI: 10.26555/chemica.v2i2.4569

Abstract

This research presents polyesterification kinetics for shellac hydrolizate-phtalic anhydride. The polyesterification kinetics is proposed by assuming that the reaction  in ideal system, whereas the reactivity of the OH groups are considered different. Polyesterification was started from purification of shelllac by hydrolisis process. Hydrolisis was done by dissolving seedlac into NaOH solution and acidification with HCl. Polyesterification was conducted by reacting shellac hydrolizate with phtalic anhydride. Both of these materials were reacted in a three necked flask under vacuum condition. The reaction was conducted in temperature range of 130-170 0C and samples were taken every 30 minutes for a total of 5 hours, to determine the COOH concentration by titration. The investigation of reaction kinetic showed that reaction model  could describe the kinetic of polyesterification shellac hydrolizate-phthalic anhydride, especially for temperature below 150 0C. The reaction rate constants were obtained as follows:k1 = 19.7 e (-3802.82/T) g/mgek.menitk2 = 29.4 e (-4062.30/T) g/mgek.menit
Co-Authors Africia, Nabillah Dwi Ahmad Fauzi Amutya, Adilla Lina Putri Anna Kusumawati Arum Sari Banowati, Galuh Budhijanto Budhijanto Budhijanto Budhijanto Budhijanto, Budhijanto Ekawati, Rina Gunawan, Dandi Syahrul Hartini Heru Santoso Budi Rochardjo Luci Paonganan Mertza Fitra Agustian Muh. Wahyu Syabani Muhammad Fadli Muhammad Hafiz Muhammad Iqbal Pantja Siwi VR Ingesti Pardosi, Ridho Prasetiyo, Yogi Ratna Sri Harjanti Retno Muningsih Rifa'i, Alfian Zilham Rika Wulandari Rika Wulandari rina ekawati Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi, Rochmadi Romi Sukmawan Sandi, Aris Siregar, Bimas Satrio Suharyanto Suharyanto Sujaka, Romi Widodo, Timbul