Garuda - Garba Rujukan Digital

MANUFACTURE OF PLASTICS FILM CONTAINING OF POLYSTIRENE, POLYCAPROLACTONE, POLY(3-HIDROKSIBUTYRATE-CO-3- HIDROXYVALERATE) AND BIODEGRADATION STUDY IN OCEAN WATER Dewi, Asiska Permata; Zaini, Erizal; Djamaan, Akmal
Jurnal Riset Kimia Vol 7, No 2 (2014): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v7i2.167

Â ABSTRACTThe manufacture of a biodegradable plastics film containing of polymer synthetic polystyrene(PS) and biopolymer of polycaprolactone (PCL), poly(3-hydroxybutyrate-co-3-hydroxyvalerate)[P(3HB-ko-3HV)] and biodegradation study in ocean water has been carried out. Plastics filmcontaining of PS/PCL/P(3HB-ko-3HV) produced by blending techniques followed by solventcasting with ratios were of 100/0/0, 95/5/0, 95/0/5, 90/5/5, 85/10/5, 85/5/10. This testing wasconducted based on immersion test method recommend by American Society for Testing andMaterials. Poly blend plastics film PS/PCL/P(3HB-ko-3HV) were characterized by tensilestrength, thermal properties and SEM analysis. The profiles of the rate biodegradation view byweight reduction of the tested plastic film for 1-7 weeks period. Tensile strength analysisshowed the decreasing of tensile strength with the addition of P(3HB-ko-3HV). Thermalanalysis showed a decreasing in the melting point with the addition of PCL and P(3HB-co-3HV). SEM micrograph showed the destruction occurred and erosion at surface of plastic filmduring observation time. The rate of biodegradation showed that increasing of PCL and P (3HBco-3HV) in a mixture of plastic film, so biodegradation increased.Keywords: polystyrene, polycaprolactone, poly(3-hidroxybutyrate-co-3-hydroxyvalerate),biodegradation, film plastic.

PENINGKATAN LAJU PELARUTAN TRIMETOPRIM MELALUI METODE KO-KRISTALISASI DENGAN NIKOTINAMIDA Zaini, Erizal; Halim, Auzal; Soewandhi, Sundani N.; Setyawan, Dwi
JFIOnline | Print ISSN 1412-1107 | e-ISSN 2355-696X Vol 5, No 4 (2011)
Publisher : Indonesian Research Gateway

Show Abstract | Download Original | Original Source | Check in Google Scholar

Co-crystallization of trimethoprim with nicotinamide had been done using solvent (methanol as a solvent) and melted technique. Kofler’s hot contact methode was used to identify the solid state interaction between these two components. The solid phase was characterized by microscopic, powder X-ray diffraction, thermal DTA and FT-IR spectroscopy analysis. Dissolution rate profile was performed by paddle methode (Type II USP), distilled water as a medium. Solid state interaction between trimethoprim and nicotinamide show a formation of conglomerate (simple eutectic) at eutectical point 125 0C. Dissolution rate of co-crystallization product of trimethoprim and nicotinamide increase significantly compare to physical mixture and intact trimethoprim. ABSTRAK Telah dilakukan ko-kristalisasi trimetoprim dengan bahan tambahan nikotinamida dengan metode pelarutan (menggunakan pelarut metanol) dan peleburan. Metode kontak panas Kofler digunakan untuk identifikasi awal pembentukan interaksi antar kedua komponen. Padatan hasil ko-kristalisasi dikarakterisasi dengan analisis mikroskopik, difraksi sinar-X, termal DTA dan spektrofotometer FT-IR. Uji laju pelarutan dilakukan dengan metode dayung (tipe II USP) dengan medium air. Hasil interaksi menunjukkan pembentukan konglomerat (eutektikal) antara kedua fase kristalin dalam keadaan padat, dengan titik eutektik pada temperatur 125 0C. Laju pelarutan trimetoprim hasil ko-kristalisasi meningkat secara signifikan dibandingkan dengan campuran fisika dan senyawa tunggal trimetprim.

Kajian Biodegradasi Filem Plastik Campuran Polimer Sintetik dengan Biopolimer dalam Larutan Air Octaviani, Melzi; Zaini, Erizal; Djamaan, Akmal
JFIOnline | Print ISSN 1412-1107 | e-ISSN 2355-696X Vol 6, No 2 (2012)
Publisher : Indonesian Research Gateway

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1542.725 KB)

The degradation of a plastic film containing polymer syntheticpolystyrene (PS) and biopolymer poly(3-hydroxybutyrate)[P(3HB)] and poly (3-hydroxybutyrate-co-3-hydroxy valerat)[P(3HB-co-3HV)] in various composition in aquous solution by in-vitro and in-vivo has been carried out. The testing was conducted based on immersion test in aquadest, river water, pH 4 solution, 6,8 and 10. Rate degradation measured use linear regression equality and parameter is time degradation 50% (t 50%), time degradation 95% (t 95%) and indicated by the slope (k). The result showed that, degradation of a plastic film containing PS and P(3HB) in pH 6 solution occurred faster, followed by ratio PS/P(3HB) 95:5, PS/P(3HB) 90:10, PS/P(3HB) 85:15 and PS/P (3HB) 80:20, in contrast degradation of pure PS (100:0) not occured. It is also observed that the biodegradation plastic film containing PS/P(3HB-co-3HV) in river water ratio PS/P(3HB-co-3HV) 95:5, PS/P (3HB-co-3HV) 90:10 and PS/P (3HB-co-3HV) 85:15, in contrast degradation of pure PS (100:0) not occurred.Keywords : biodegradation, polystyrene, poly(3-hydroxybutyrate), poly (3-hydroxybutyrate-co-3-hydroxyvalerat), plastic film.

Karakterisasi Kompleks Inklusi Simvastatin – β-Siklodekstrin yang Dibuat dengan Metoda Kneading Octavia, Maria Dona; Zaini, Erizal; Halim, Auzal
JFIOnline | Print ISSN 1412-1107 | e-ISSN 2355-696X Vol 7, No 3 (2015)
Publisher : Indonesian Research Gateway

Show Abstract | Download Original | Original Source | Check in Google Scholar

ABSTRACT : Characterization of Inclusion Complex Simvastatin - β - cyclodextrin prepared by Kneading Method" has been done . This study aims to improve the dissolution rate and characterize inclusion complexes simvastatin - β - cyclodextrin developed into 3 formula , the ratio between the simvastatin and β - cyclodextrin following formula I ( 1 : 1 ), the formula II ( 1 : 2 ), and the formula III ( 2 : 1 ). Inclusion complex prepared by adding water solvent to form a paste and then dried at room temperature. The results of the inclusion complexes were characterized by analysis Differential Thermal Analysis ( DTA ), X-ray diffraction, IR spectrophotometry, Scanning Electron Microscopy ( SEM ), and dissolution rate . The results of this analysis indicate that the inclusion complex formed, characterization and dissolution profiles better than the pure simvastatin and mixed physics simvastatin and β - cyclodextrin. Key words : Inclusion complex, Simvastatin, β-Cyclodextrin, Kneading Methods ABSTRAK : Telah dilakukan penelitian dengan judul "Karakterisasi Kompleks Inklusi Simvastatin - β-Siklodekstrin yang dibuat dengan Metoda Kneading". Penelitian ini bertujuan untuk meningkatkan laju disolusi serta mengkarakterisasi kompleks inklusi Simvastatin - β-Siklodekstrin yang dikembangkan menjadi 3 formula, dengan perbandingan antara simvastatin dan β - siklodekstrin sebagai berikut formula I (1 : 1), formula II (1 : 2), dan formula III (2 : 1). Komplek inklusi dibuat dengan cara menambahkan pelarut air hingga terbentuk masa seperti pasta dan kemudian dikeringkan pada suhu kamar. Hasil komplek inklusi ini dikarakterisasi dengan analisa Differensial Thermal Analysis (DTA), Difraksi Sinar X, Spektrofotometri Infra Red, Scanning Electron Microscopy (SEM), dan disolusi. Hasil analisa tersebut menunjukkan bahwa kompleks inklusi yang terbentuk memberikan karakterisasi dan profil disolusi yang lebih baik dibandingkan dengan simvastatin murni dan campuran fisika simvastatin dan β-siklodekstrin yang dibuat dengan penggerusan biasa. Kata Kunci : Kompleks inklusi, Simvastatin, β-Siklodekstrin, Metoda Kneading

Identifikasi Interaksi Padat Campuran Parasetamol dan Ibuprofen dengan Metode Thermal Noviza, Deni; Zaini, Erizal
JFIOnline | Print ISSN 1412-1107 | e-ISSN 2355-696X Vol 7, No 3 (2015)
Publisher : Indonesian Research Gateway

Show Abstract | Download Original | Original Source | Check in Google Scholar

Solid-state interaction between parasetamol and ibuprofen was studied using thermal and spectroscopic techniques. Parasetamol-Ibuprofen binary mixtures were prepared by rotary ball mill grinding method. Differential scanning calorimetry was used to investigate the stoichiometry and thermal properties of the complex between parasetamol and ibuprofen. Powder X-ray diffraction were used to investigate the type of interaction between the two components. Two endothermic peaks in a binary mixture of paracetamol and ibuprofen was observed in DSC thermograph. X-ray powder diffractogram do not shows shift and formation of new peaks and the position of each peak is a super-imposition of each component without dominates. It can be concluded that the solid interaction between paracetamol and ibuprofen for grinding effect is the formation of mixed crystal system.

Kajian Biodegradasi Filem Plastik Campuran Polimer Sintetik dengan Biopolimer dalam Larutan Air Octaviani, Melzi; Zaini, Erizal; Djamaan, Akmal
Jurnal Farmasi Indonesia Vol 6, No 2 (2012)
Publisher : Jurnal Farmasi Indonesia

The degradation of a plastic film containing polymer syntheticpolystyrene (PS) and biopolymer poly(3-hydroxybutyrate)[P(3HB)] and poly (3-hydroxybutyrate-co-3-hydroxy valerat)[P(3HB-co-3HV)] in various composition in aquous solution by in-vitro and in-vivo has been carried out. The testing was conducted based on immersion test in aquadest, river water, pH 4 solution, 6,8 and 10. Rate degradation measured use linear regression equality and parameter is time degradation 50% (t 50%), time degradation 95% (t 95%) and indicated by the slope (k). The result showed that, degradation of a plastic film containing PS and P(3HB) in pH 6 solution occurred faster, followed by ratio PS/P(3HB) 95:5, PS/P(3HB) 90:10, PS/P(3HB) 85:15 and PS/P (3HB) 80:20, in contrast degradation of pure PS (100:0) not occured. It is also observed that the biodegradation plastic film containing PS/P(3HB-co-3HV) in river water ratio PS/P(3HB-co-3HV) 95:5, PS/P (3HB-co-3HV) 90:10 and PS/P (3HB-co-3HV) 85:15, in contrast degradation of pure PS (100:0) not occurred.Keywords : biodegradation, polystyrene, poly(3-hydroxybutyrate), poly (3-hydroxybutyrate-co-3-hydroxyvalerat), plastic film.

PENINGKATAN LAJU PELARUTAN TRIMETOPRIM MELALUI METODE KO-KRISTALISASI DENGAN NIKOTINAMIDA Zaini, Erizal; Halim, Auzal; Soewandhi, Sundani N.; Setyawan, Dwi
Jurnal Farmasi Indonesia Vol 5, No 4 (2011)
Publisher : Jurnal Farmasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35617/jfi.v5i4.57

Co-crystallization of trimethoprim with nicotinamide had been done using solvent (methanol as a solvent) and melted technique. Koflerâ??s hot contact methode was used to identify the solid state interaction between these two components. The solid phase was characterized by microscopic, powder X-ray diffraction, thermal DTA and FT-IR spectroscopy analysis. Dissolution rate profile was performed byÂ paddle methode (Type II USP), distilled water as a medium. Solid state interaction between trimethoprim and nicotinamide show a formation ofÂ conglomerate (simple eutectic) at eutectical point 125 0C. Dissolution rate of co-crystallization product of trimethoprim and nicotinamide increaseÂ significantly compare to physical mixture and intact trimethoprim. ABSTRAK Telah dilakukan ko-kristalisasi trimetoprim dengan bahan tambahan nikotinamida dengan metode pelarutan (menggunakan pelarut metanol) dan peleburan. Metode kontak panas Kofler digunakan untuk identifikasi awal pembentukan interaksi antar kedua komponen. Padatan hasil ko-kristalisasi dikarakterisasiÂ dengan analisis mikroskopik, difraksi sinar-X, termal DTA dan spektrofotometer FT-IR. Uji laju pelarutan dilakukan dengan metode dayung (tipe II USP) dengan medium air. Hasil interaksi menunjukkan pembentukan konglomerat (eutektikal) antara kedua fase kristalin dalam keadaan padat, dengan titik eutektik pada temperatur 125 0C. Laju pelarutan trimetoprim hasil ko-kristalisasi meningkat secara signifikan dibandingkan dengan campuran fisika dan senyawa tunggal trimetprim.

Identifikasi Interaksi Padat Campuran Parasetamol dan Ibuprofen dengan Metode Thermal Noviza, Deni; Zaini, Erizal
Jurnal Farmasi Indonesia Vol 7, No 3 (2015)
Publisher : Jurnal Farmasi Indonesia

Solid-state interaction between parasetamol and ibuprofen was studied using thermal and spectroscopic techniques. Parasetamol-Ibuprofen binary mixtures were prepared by rotary ball mill grinding method. Differential scanning calorimetry was used to investigate the stoichiometry and thermal properties of the complex between parasetamol and ibuprofen. Powder X-ray diffraction were used to investigate the type of interaction between the two components. Two endothermic peaks in a binary mixture of paracetamol and ibuprofen was observed in DSC thermograph. X-ray powder diffractogram do not shows shift and formation of new peaks and the position of each peak is a super-imposition of each component without dominates. It can be concluded that the solid interaction between paracetamol and ibuprofen for grinding effect is the formation of mixed crystal system.

Karakterisasi Kompleks Inklusi Simvastatin Ã¢â‚¬â€œ ÃŽÂ²-Siklodekstrin yang Dibuat dengan Metoda Kneading Octavia, Maria Dona; Zaini, Erizal; Halim, Auzal
Jurnal Farmasi Indonesia Vol 7, No 3 (2015)
Publisher : Jurnal Farmasi Indonesia

ABSTRACT : Characterization of Inclusion Complex Simvastatin - Î² - cyclodextrin prepared by Kneading Method" has been done . This study aims to improve the dissolution rate and characterize inclusion complexes simvastatin - Î² - cyclodextrin developed into 3 formula , the ratio between the simvastatin and Î² - cyclodextrin following formula I ( 1 : 1 ), the formula II ( 1 : 2 ), and the formula III ( 2 : 1 ). Inclusion complex prepared by adding water solvent to form a paste and then dried at room temperature. The results of the inclusion complexes were characterized by analysis Differential Thermal Analysis ( DTA ), X-ray diffraction, IR spectrophotometry, Scanning Electron Microscopy ( SEM ), and dissolution rate . The results of this analysis indicate that the inclusion complex formed, characterization and dissolution profiles better than the pure simvastatin and mixed physics simvastatin and Î² - cyclodextrin. Â Key words : Inclusion complex, Simvastatin, Î²-Cyclodextrin, Kneading Methods Â ABSTRAK : Telah dilakukan penelitian dengan judul "Karakterisasi Kompleks Inklusi Simvastatin - Î²-Siklodekstrin yang dibuat dengan Metoda Kneading". Penelitian ini bertujuan untuk meningkatkan laju disolusi serta mengkarakterisasi kompleks inklusi Simvastatin - Î²-Siklodekstrin yang dikembangkan menjadi 3 formula, dengan perbandingan antara simvastatin dan Î² - siklodekstrin sebagai berikut formula I (1 : 1), formula II (1 : 2), dan formula III (2 : 1). Komplek inklusi dibuat dengan cara menambahkan pelarut air hingga terbentuk masa seperti pasta dan kemudian dikeringkan pada suhu kamar. Hasil komplek inklusi ini dikarakterisasi dengan analisa Differensial Thermal Analysis (DTA), Difraksi Sinar X, Spektrofotometri Infra Red, Scanning Electron Microscopy (SEM), dan disolusi. Hasil analisa tersebut menunjukkan bahwa kompleks inklusi yang terbentuk memberikan karakterisasi dan profil disolusi yang lebih baik dibandingkan dengan simvastatin murni dan campuran fisika simvastatin dan Î²-siklodekstrin yang dibuat dengan penggerusan biasa. Kata Kunci : Kompleks inklusi, Simvastatin, Î²-Siklodekstrin, Metoda Kneading

KARAKTERISASI FISIKOKIMIA DAN LAJU DISOLUSI DISPERSI PADAT IBUPROFEN DENGAN PEMBAWA POLIETILENGLIKOL 6000 Erizal Zaini; Rahmi Nofita; Salman Salman; Ima Kurniati
Jurnal Ilmiah Farmasi Vol. 6 No. 1 (2009)
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

ABSTRACTSolid dispersions of the antiinflamation drug ibuprofen and polyethylene glycol 6000 (PEG6000) were prepared by the melting method in order to increase the dissolution rates of this poorlywater-soluble compound. The temperature/composition phase diagram of binary system wasanalyzed by termal analysis hot-stage microscopy, showing an eutectic formation. Polarized lighthot stage microscopy and X-ray-powder diffraction confirmed, that solid dispersion techniquedecrease the crystalliny of ibuprofen after melting and solidifying of a 4/6 (w/w) mixture of ibuprofenand polyethylene glycol 6000 respectively, which the results enhanced dissolution rates comparedto the physical mixtures and ibuprofen intact. However, no such chemical interactions in the solidstate were confirmed by FTIR spectra which showed the presence of ibuprofen crystalline in soliddispersion.Keywords: solid dispersions, ibuprofen, polyethylene glycol 6000

Title

Found 50 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 50 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 50 Documents
Search