Modification in surface properties of sugarcane bagasse: a comparative study from the pretreatment using sodium and calcium hydroxide

Anggono, Juliana and Purwaningsih, Hariyati and Sugondo, Suwandi and HENRICO, STEVEN and SEWUCIPTO, SANJAYA (2016) Modification in surface properties of sugarcane bagasse: a comparative study from the pretreatment using sodium and calcium hydroxide. In: 3rd international conference on bio-based polymers and composites , 01-09-2016 - 01-09-2016, Szeged - Hungaria.

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Abstract

Sugarcane is the world�s largest crop grown with a total harvest of about 1.69 billion tons in 2010. Sugarcane bagasse is an agro-industrial by-product of sugar mill. About 30-32% by weight of the cane produced as by-products. Like other natural fibers, bagasse is a fibrous resi-due, available in abundance, and have been relatively unexplored for fibrous application. This current research studied the effect of soaking time during alkali treatment using sodium hydrox-ide (NaOH) and calcium hydroxide (Ca(OH)2) solution on the properties modifications on ba-gasse fiber. Calcium hydroxide is chosen as low cost and less agressive alkaline solution to the environment compared to sodium hydroxide. Pretreatment with NaOH was found more effective than with Ca(OH)2 with major removal of lignin and minor of hemicellulose as . The weight loss obtained on bagasse after pretreated with NaOH was found as 40.5-57.75%, while using Ca(OH)2, the weight loss was measured as 25-46%. The chemical structure of the cellu-lose fibers after treatment was analysed using Fourier Transform Infrared (FTIR). Scanning electron microscope (SEM) was performed to study the effect of treatment on the surface morphology of the fibers. Those techniques identified that most lignin has been removed and cellulose fibers obtained from treatment using both solutions.

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