Belladini Lovely, Titi Candra Sunarti, Farah Fahma, Evi Savitri IrianiMaster Program on Department of Agroindustrial Technology, Faculty of Agricultural Technology, Bogor Agricultural University

e-mail : beldinlov13@gmail.com, titibogor@yahoo.com

1. Chemical (proximate content, cellulose content), 2. Physical (XRD, FTIR, DP, ratio aspect, tensile strength, transparency, storage modulus, opacity, elongation, light transmission, density, thickness, OTR, WVTR),

3. Thermal (TGA, DSC), 4. Morphological (PSA, SEM, TEM)

Cellulose Fiber

Vacuum-dried Cellulose Fiber

Polyvinyl alcohol (PVA)-cellulose nanofibers nanocomposite were prepared by an immersion precipitation method using various glycerol as plasticizer contents. Cellulose nanofibers were produced

by hydrolyzing sweet sorghum (Sorghum bicolor L.) bagasse with sulfuric acid. The effect of (acid) hydrolysis time on the structure and properties of the nanofibers will be investigated. Fourier

transform infrared spectroscopy is employed to evaluate the change of chemical composition. Transmission and scanning electron microscope images will show the average thickness of the nanofibers

as the hydrolysis time was varied. The nanocomposites film obtained is supposed to be translucent. It will be examined whether longer hydrolysis time produces a higher yield of dispersed nanofibers;

and whether the degree of crystalinity and polymerization decrease with increasing hydrolysis time. The degradation of nanofibers with higher sulfate group content will be observed when it will be

started. The thermogravimetric and differential scanning calorimetry analyzes will show whether with increasing glycerol content the thermal stability and the glass transition temperature (Tg) of

polymer matric shift to higher temperature. The tensile modulus and strength will also investigated whether it will increase with increasing glycerol content. Dynamic mechanical analysis profiles

show how the presence of glycerol affects on the storage modulus of PVA-cellulose nanofiber nanocomposites over the whole range of temperatures studied.

Ke y w ord s : n a n o f i b e r , n a n o c om p o s i t e f i l m , c e l l u l o s e , a c i d h yd ro l y s i s , s o rg h u m ba ga s s e

1. Fahma F, Hori N, Iwata T, Takemura A (2012) The Morphology and Properties of Poly(Methyl Methacrylate)-Cellulose Nano-Composites Prepared by Immersion Precipitation Method. Journal of Applied Polymer Science.

2. Fahma F, Iwamoto S, Hori N, Iwata T, Takemura A (2010) Isolation, Preparation, and Characterization of Nano-Fibers From Oil Palm Empty-Fruit-Bunch (OPEFB). Cellulose. 17: 977-985.

1. Analyze influence of varied acid hydrolysis time of 30, 60, 90 minutes2. Analyze influence of varied glycerol (plasticizer) ratio of 1, 1,5, 3%

Petroleum material that is generally used in packaging industry nowadays has been turning into serious constraints. Exp: non-biodegradability, recycle difficulty, fossil fuel extinction.

*can be replaced by natural material !

CaCO3

Polyvinyl Alcohol (PVA)

(filler)

compositeIt needs to develop some other sustainable, environmental friendly, natural materials to substitute plastic synthetics polymer and mineral fillers.

SWEET SORGHUM (Sorghum bicolor L.) can grow in marginal area & is one of Indonesian Ministry of Agriculture Mega Plan crop (2300 ha in 2010). As plastic filler, its BAGASSE is biodegradable, renewable, has high tensile strength, high rigidity, high reinforcing potency, wide surface area, etc.

Protein 2.23 %

Fat 0.70%

Water 6.43%

Crude Fiber 29.67%

Ash 6.09%

Carbohydrate (by difference) 54.88%

Sorghum Bagasse

Nanofiber Suspension

1. The research will be continued to the next step (Production of Cellulose Nanofiber-PVA Nanocomposite Film)

2. All analysis (characterization) remained will be conducted to both cellulose nanofiber suspension & nanocomposite film samples

3. Two variables in this study will be examined its influences on samples characteristics, in order to be applied as long-life distribution packaging

4. Comparison will be conducted with previous researches results