Synthesis of cellulose acetate from cotton byproducts

Cheng, H. N.; Dowd, Michael K.; Selling, Gordon W.; Biswas, Atanu

doi:10.1016/j.carbpol.2009.11.048

Cited by 108 publications

(58 citation statements)

References 7 publications

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“…The obtained values are also higher than those reported by Hu et al 27 for bacterial cellulose acetylated using iodine catalyst, and somewhat similar to data reported by Cheng et al 28 for iodine catalysed acetylation of cotton by-products at high reaction temperatures, where the average DS was around 2.5 depending on reaction temperature and time. Therefore, comparison of stated literature data with the obtained results further highlights the importance of cellulose purity before acetylation and the importance of proper ratio of chemicals in the reaction mixture with an emphasis on catalyst type.…”

Section: Analysis Of the Cellulose Acetylation Processcontrasting

confidence: 51%

Chemical and Thermal Properties of Cellulose Acetate Prepared from White Willow (Salix alba) and Black Alder (Alnus glutinosa) as a Potential Polymeric Base of Biocomposite Materials

Španić

Jambreković

Medved

et al. 2015

Chem. Biochem. Eng. Q.

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Natural polymeric materials are an interesting alternative to petrochemical products with potential application in almost all areas of human activity. Wishing to expand the field of cellulose acetate application to the biocomposite wood materials, the possibilities of cellulose isolation and its acetylation from two domestic, commercially meagrely used, wood species was investigated in this paper. Cellulose isolated from white willow (Salix alba) and black alder (Alnus glutinosa) was acetylated using acetic anhydride and perchloric acid catalyst, by treatment at room temperature for 45 minutes. Analysis of the laboratory acetylation process, beside chemical analysis of the gained product by infrared spectroscopy (FT-IR), indicated the impact of hemicelluloses, present both in cellulose and cellulose acetate structure, on values of mass increase, number of acetyl groups and the degree of substitution. Results of thermogravimetric analysis (TGA) later confirmed the statement that thermal properties of cellulose acetate were also dependant on hemicelluloses.

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Section: Analysis Of the Cellulose Acetylation Processcontrasting

confidence: 51%

Chemical and Thermal Properties of Cellulose Acetate Prepared from White Willow (Salix alba) and Black Alder (Alnus glutinosa) as a Potential Polymeric Base of Biocomposite Materials

Španić

Jambreković

Medved

et al. 2015

Chem. Biochem. Eng. Q.

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“…Simple and mixed cellulose esters of short-chain carboxylic acids (C2 to C4) are produced in industrial scale to obtain synthetic fibers, photographic and X-ray films, coatings, textile and cigarette filter industries (Crépy et al 2009). Commercial cellulose acetate is typically prepared using acetic acid and acetic anhydride in the presence of a strong acid catalyst (Cheng et al 2010). On the contrary, the preparation of cellulose esters of long-chain aliphatic or aromatic acids via the anhydride strategy is not economically feasible.…”

Section: Introductionmentioning

confidence: 99%

Reactive dissolution of cellulose and pulp through acylation in pyridine

et al. 2012

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The direct acylation of cellulose and different pulps with various acid chlorides was systematically screened. The syntheses were started in a heterogeneous solid-liquid reaction medium in hot pyridine with aliphatic and aromatic acid chlorides. After a few hours, depending on the reagent used, a homogenous solution was obtained. The obtained cellulose esters usually show a high degree of substitution (DS) and polymerization and are soluble in organic solvents. Esterification of softwood dissolving pulp, hardwood kraft pulp and hardwood kraft pulp-hemicellulose poor were also studied. The results show that almost identical DS were obtained for pulp derivatives compared to esters of microcrystalline cellulose. Thermogravimetric analysis and differential scanning calorimetry of the synthesized materials showed an improved thermal stability and various discrete thermal transitions compared to the original cellulose. The scanning electron microscopy images of derivatives showed a relatively flat and smooth surface with an absence of fibrous structure. The reactive dissolution of cellulose or pulp in pyridine is a straightforward and easy route to obtain long-chain aliphatic and aromatic cellulose esters.

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“…Ini artinya, dari massa total selulosa yang direaksikan, didapatkan selulosa asetat sebesar 17,28% (20) . Sintesis selulosa asetat dengan pelarut asam asetat anhidrat dengan katalis iodin dapat menghasilkan selulosa asetat dengan konversi sebesar 50-80% (21) . Apabila potensi selulosa yang dapat diproduksi dari TKKS sebesar 2.097.225 ton dengan yield selulosa asetat yang dapat dihasilkan sebesar 17,28%, maka potensi bioplastik yang dapat diproduksi sebesar 362.400,48 ton.…”

Section: …(1)unclassified

Potensi Selulosa dari Limbah Tandan Kosong Kelapa Sawit untuk Bahan Baku Bioplastik Ramah Lingkungan

Dewanti

2018

Jurtekling

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Increase in extent tree crops palm oil and production raises the waste problem. Based on data BPS in ABSTRAKPeningkatan luas lahan perkebunan kelapa sawit dan produksinya menimbulkan permasalahan sampah. Berdasarkan data BPS tahun 2015, produksi kelapa sawit di Indonesia mencapai 31,07 juta ton per tahun. Sebesar 23% dari total produksi kelapa sawit tersebut merupakan Tandan Kosong Kelapa Sawit (TKKS). Hanya 10% dari TKKS yang sudah dimanfaatkan untuk bahan bakar boiler dan kompos padahal banyak sekali produk yang bisa dibuat dari hasil pengolahan TKKS. Salah satu pemanfaatan TKKS adalah dengan mengekstraksi selulosa sebagai bahan baku bioplastik ramah lingkungan. Hal ini akan membantu permasalahan lingkungan yang ditimbulkan oleh kelapa sawit dan pemakaian plastik sudah sangat banyak. Kandungan selulosa dalam TKKS sebesar 30-40% berat. Penelitian ini bertujuan menghitung potensi selulosa dari TKKS dengan mengekstraksi selulosa sehingga didapatkan yield selulosa yang terekstraksi. Selulosa dari TKKS tersebut diekstraksi dengan dua tahapan proses yaitu delignifikasi menggunakan natrium hidroksida (NaOH) 12% selama 3 jam dilanjutkan bleaching dengan hidrogen peroksida (H2O2) 10% selama 1,5 jam. Dari hasil ekstraksi tersebut didapatkan yield selulosa sebesar 34%. Dari hasil tersebut dapat disimpulkan bahwa selulosa memiliki potensi yang sangat besar untuk diproduksi dari TKKS sehingga memenuhi kebutuhan bahan baku bioplastik.

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Synthesis of cellulose acetate from cotton byproducts

Cited by 108 publications

References 7 publications

Chemical and Thermal Properties of Cellulose Acetate Prepared from White Willow (Salix alba) and Black Alder (Alnus glutinosa) as a Potential Polymeric Base of Biocomposite Materials

Chemical and Thermal Properties of Cellulose Acetate Prepared from White Willow (Salix alba) and Black Alder (Alnus glutinosa) as a Potential Polymeric Base of Biocomposite Materials

Reactive dissolution of cellulose and pulp through acylation in pyridine

Potensi Selulosa dari Limbah Tandan Kosong Kelapa Sawit untuk Bahan Baku Bioplastik Ramah Lingkungan

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