Studi nitrasi selulosa pada kapas dan kapuk.

Hartati , Hartati (1995) Studi nitrasi selulosa pada kapas dan kapuk. Undergraduate thesis, FMIPA UNDIP.

[img]PDF
Restricted to Repository staff only

1859Kb
[img]
Preview
PDF
15Kb
[img]
Preview
PDF
342Kb
[img]
Preview
PDF
432Kb
[img]
Preview
PDF
371Kb
[img]
Preview
PDF
949Kb
[img]
Preview
PDF
454Kb
[img]PDF
Restricted to Repository staff only

370Kb
[img]PDF
Restricted to Repository staff only

480Kb
[img]
Preview
PDF
344Kb
[img]
Preview
PDF
332Kb
[img]
Preview
PDF
458Kb

Abstract

Selulosa adalah polimer alam yang terdiri atas unit-unit glukosa yang berikatan 0-1,4-g1ukosida. Turunan selulosa diperoleh dari reaksi substitusi terhadap gugus hidroksil. Salah satu turunannya, yakni selulosa nitrat merupakan ester selulosa yang terbentuk dan pergantian gugus hidroksil dengan ion nitronium. Nitrasi optimum terjadi pada jumlah tertentu asam ' nitrat, asam sulfat dan air. Hasil penelitian menunjukkan bahwa perbandingan asam nitrat-asam sulfat-air adalah 1:1:2 (dalam mol). Karakterisasi selulosa nitrat dilakukan terhadap berat molekul rata-rata atas dasar viskositas (Mv), kelarutan dalam aseton dan spektrum inframerah. Cellulose is a natural polymer in which comprised of D-glucose units joined together by 0-1,4-glucosidic bond. Cellulose derivative is synthesized by substitution react toward hydroxyl group. One of this, cellulose nitrate is a cellulose ester in which the hydroxyl groups have been replaced by the nitronium ion. Optimum nitration is occured at the composition of nitric acid, sulfuric acid and water certainly. This research, a ratio of nitric acid - sulfuric acid - water is 1 : 1 : 2 ( in moles). Characterization of cellulose nitrate is carried out about viscosity average molecular weight (Mv), solubility in aceton and infrared spectrum. iv

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QD Chemistry
Divisions:Faculty of Science and Mathematics > Department of Chemistry
ID Code:30581
Deposited By:Mr UPT Perpus 1
Deposited On:03 Nov 2011 07:59
Last Modified:03 Nov 2011 07:59

Repository Staff Only: item control page