METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA
Green methylation of cellulose using dimethyl carbonate (DMC) with microwave and sonochemistry techniques has been conducted. As the comparison, conventional methylation of cellulose using dimethyl sulfate (DMS) has also carried out. The cellulose used in this study was isolated from sago waste in 8...
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| Format: | Thesis |
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[Yogyakarta] : Universitas Gadjah Mada
2013
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| author | , FENSIA ANALDA SOUHOKA , Dr, Harno dwi pranowo M.si |
| author_facet | , FENSIA ANALDA SOUHOKA , Dr, Harno dwi pranowo M.si |
| author_sort | , FENSIA ANALDA SOUHOKA |
| collection | UGM |
| description | Green methylation of cellulose using dimethyl carbonate (DMC) with
microwave and sonochemistry techniques has been conducted. As the comparison,
conventional methylation of cellulose using dimethyl sulfate (DMS) has also
carried out. The cellulose used in this study was isolated from sago waste in
86.67% content. All the methylation products were analyzed by means of IR and
1H-NMR spectrometers. The determination of cellulose content was done using
standart method of TAPPI T-203, while the determination of the degree of
substitution (DS) was based on method of Zeisel.
The first stage, conventional methylation of cellulose was performed using
DMS, NaOH 50% (w/v) and acetone (volume ratio = 3:10:9) at 50 C, while the
green one was done using Na2HPO4 (12:1), DMC and NaCl 5% (w/v) (volume
ratio = 10:10) at 90 C. The reaction time was varied (2 to 5 hours) and the
optimum condition was reached for 3 hours. It was showed that the green
methylation using DMC gave higher DS (1.028) than that of the conventional
method using DMS (0.924).
The second step, green methylation of cellulose was conducted using
Na2HPO4 (12:1), DMC and NaCl 5% (w/v) (volume ratio = 10:10) by employing
microwave and sonochemistry techniques. The methylation with microwave was
carried out at the power of 400 W for 200 seconds and gave the DS of 1.036. The
methylation with sonochemistry (the variation time 1 to 3 hours) was conducted at
the optimum time of 2 hours and gave the DS of 0.646. The volume of DMC was
also varied, where the volume ratio of DMC of 1:16 gave the highest DS (1.177). |
| first_indexed | 2024-03-13T22:49:54Z |
| format | Thesis |
| id | oai:generic.eprints.org:119502 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-13T22:49:54Z |
| publishDate | 2013 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:1195022016-03-04T08:35:38Z https://repository.ugm.ac.id/119502/ METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA , FENSIA ANALDA SOUHOKA , Dr, Harno dwi pranowo M.si ETD Green methylation of cellulose using dimethyl carbonate (DMC) with microwave and sonochemistry techniques has been conducted. As the comparison, conventional methylation of cellulose using dimethyl sulfate (DMS) has also carried out. The cellulose used in this study was isolated from sago waste in 86.67% content. All the methylation products were analyzed by means of IR and 1H-NMR spectrometers. The determination of cellulose content was done using standart method of TAPPI T-203, while the determination of the degree of substitution (DS) was based on method of Zeisel. The first stage, conventional methylation of cellulose was performed using DMS, NaOH 50% (w/v) and acetone (volume ratio = 3:10:9) at 50 C, while the green one was done using Na2HPO4 (12:1), DMC and NaCl 5% (w/v) (volume ratio = 10:10) at 90 C. The reaction time was varied (2 to 5 hours) and the optimum condition was reached for 3 hours. It was showed that the green methylation using DMC gave higher DS (1.028) than that of the conventional method using DMS (0.924). The second step, green methylation of cellulose was conducted using Na2HPO4 (12:1), DMC and NaCl 5% (w/v) (volume ratio = 10:10) by employing microwave and sonochemistry techniques. The methylation with microwave was carried out at the power of 400 W for 200 seconds and gave the DS of 1.036. The methylation with sonochemistry (the variation time 1 to 3 hours) was conducted at the optimum time of 2 hours and gave the DS of 0.646. The volume of DMC was also varied, where the volume ratio of DMC of 1:16 gave the highest DS (1.177). [Yogyakarta] : Universitas Gadjah Mada 2013 Thesis NonPeerReviewed , FENSIA ANALDA SOUHOKA and , Dr, Harno dwi pranowo M.si (2013) METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA. UNSPECIFIED thesis, UNSPECIFIED. http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=59505 |
| spellingShingle | ETD , FENSIA ANALDA SOUHOKA , Dr, Harno dwi pranowo M.si METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA |
| title | METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA |
| title_full | METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA |
| title_fullStr | METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA |
| title_full_unstemmed | METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA |
| title_short | METILASI GREEN SELULOSA MENGGUNAKAN DIMETIL KARBONAT (DMC) DENGAN TEKNIK GELOMBANG MIKRO DAN SONOKIMIA |
| title_sort | metilasi green selulosa menggunakan dimetil karbonat dmc dengan teknik gelombang mikro dan sonokimia |
| topic | ETD |
| work_keys_str_mv | AT fensiaanaldasouhoka metilasigreenselulosamenggunakandimetilkarbonatdmcdenganteknikgelombangmikrodansonokimia AT drharnodwipranowomsi metilasigreenselulosamenggunakandimetilkarbonatdmcdenganteknikgelombangmikrodansonokimia |