Value added of mulberry paper waste by carboxymethylation for preparation a packaging film

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Rachtanapun, P.^1,2,3 ; Kumthai, S.^1 ; Mulkarat, N.^1 ; Pintajam, N.^1 ; Suriyatem, R.^3

Division of Packaging Technology, Chiang Mai University, Chiang Mai

50100, Thailand^1

Materials Science Research Center, Chiang Mai University, 50200, Thailand^2

Division of Food Science and Technology, Chiang Mai University, Chiang Mai

50100, Thailand^3

关键词: Carboxy-methyl cellulose;    Carboxymethylation;    Degree of substitution;    Elongation at break;    Packaging films;    Paper wastes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012081/pdf
DOI  :  10.1088/1757-899X/87/1/012081

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Cellulose from mulberry paper waste was converted to carboxymethyl cellulose (CMCm) by etherification using chloroacetic acid and various sodium hydroxide (NaOH) concentrations (30-60 g/100 mL). The degree of substitution of the various CMCm materials produced ranged between 0.33-0.45. The chemical structure of cellulose and the synthesized CMCm materials was characterized using Fourier transform infrared spectroscopy. CMCm films were cast and tested. The tensile strength (TS) and percent elongation at break (EB) of the films were investigated. The highest TS (32.58 MPa) and EB (2.39%) were found using the 50g /100 mL NaOH-synthesized CMCm film. The effect of glycerol as a plasticizer on TS and EB of this CMCm film was also evaluated. Increasing the glycerol content decreased TS and increased EB of the CMCm films.