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Synthesis and Characterization of a Biodegradable Cellulose Acetate-Montmorillonite
Composite for Effective Adsorption of Eosin Y
Monmi Goswami a, b and Archana Moni Das a*
a Natural Product Chemistry Group, Chemical Science and Technology Division, CSIR-North
East Institute of Science and Technology, Jorhat-785006, Assam, India.b Department of Chemistry, Gauhati University, Guwahati-781014, Assam, India.*Corresponding author. Tel.:+919435489369.E-mail address: [email protected] (A.M. Das)
Data in Brief:
1. Table S1 indicating the reaction conditions for the maximum yield of cellulose acetate under different conditions of temperature, time and catalyst concentration.
2. Fig. S1: 1H NMR spectrum of cellulose acetate in DMSO with DS of 2.85.
3. Fig. S2: The typical N2 adsorption-desorption isotherm and corresponding pore size
distribution of cellulose acetate, montmorillonite and cellulose acetate-organophillic
montmorrilonite composite.
4. Table S2: Thermodynamic parameters from Langmuir isotherm.
5. Fig. S3: FESEM images of the cellulose acetate, cellulose acetate-organophillic
montmorillonite and cellulose acetate-Na montmorillonite composite before and after
compost test.
6. Figure S4: Plot of ln KL versus 1/T for calculation of thermodynamic parameters.
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1. Table indicating reaction conditions for maximum yield of cellulose acetate.
Table 1: Optimization of the reaction conditions for maximum yield of cellulose acetate
Sample no. Temp (TºC) Time (min) Zinc chloride
content(mg)
% Yield of
product
Degree of
Substitution
(DS)
125 60 10 21 0.77
2 25 60 20 25 0.89
3 25 60 50 30 0.75
4 25 60 100 33 1.2
5 50 140 10 60 2.3
6 50 140 20 66 1.98
7 50 140 50 71 2.34
8 50 140 100 74 2.85
9 80 180 10 58 2.45
10 80 180 20 62 2.5
11 80 180 50 65 2.2
12 80 180 100 69 2.6
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2. 1H NMR spectrum of cellulose acetate in DMSO with DS of 2.85.
Figure S1: 1H NMR spectrum of cellulose acetate in DMSO with DS of 2.85.
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3. BET data for cellulose acetate, montmorillonite and the organophillic composite.
Figure S2: The typical N2 adsorption-desorption isotherm and corresponding pore size distribution of cellulose acetate (a, b), cellulose acetate-organophillic montmorrilonite composite (c, d) and montmorillonite (e, f) respectively.
(a) (b)
(d)(c)
(e) (f)
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4. Table S2: Thermodynamic parameters from Langmuir isotherm:
T(K) ∆G0(k J mol-1) ∆H0(k J mol-1) ∆S0(J K-1 mol-1)
293 -19.85 -5.86 47.95
313 -20.94
333 -21.76
5. FESEM images of the cellulose acetate, cellulose acetate-organophillic
montmorillonite and cellulose acetate-Na montmorillonite composite before and after
compost test.
Figure S3: FESEM images of the cellulose acetate (a, d), cellulose acetate-organophillic
montmorillonite (b, e) and cellulose acetate-Na montmorillonite composite (c, f) before and
after compost test respectively.
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6. Graph of ln KL against 1/T.
Figure S4: Plot of ln KL versus 1/T for calculation of thermodynamic parameters.
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