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Polymers 2018, 10(12), 1335; https://doi.org/10.3390/polym10121335

Surface Hydrophobic Modification of Microcrystalline Cellulose by Poly(methylhydro)siloxane Using Response Surface Methodology

College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Received: 8 November 2018 / Revised: 28 November 2018 / Accepted: 29 November 2018 / Published: 3 December 2018
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Abstract

Poly(methylhydro)siloxane (PMHS) and n-hexane were used as modifiers and solvents, respectively, to prepare surface modification of microcrystalline cellulose (MCC). The response surface methodology was used to optimize the effects of reaction conditions on hydrophobicity of MCC. The optimal reaction conditions were determined as follows: the concentration of PMHS was 0.0275% (the mass ratio of PMHS to MCC), the reaction time was 20 min, and the drying temperature was 70 °C. Under the optimum reaction conditions, the water contact angle of modified MCC was 141.5°. It is feasible to optimize and select the reaction conditions of modified MCC by Design-Expert, and the predicted value of the mathematical model is in good agreement with the experimental value. Surface chemical characteristics were investigated using X-ray photoelectron spectroscopy (XPS). These analyses confirmed that the PMHS chains were attached to MCC. Due to the introduction of a large amount of methyl groups, the reaction between MCC and PMHS leads to an improvement in its hydrophobicity. View Full-Text
Keywords: response surface methodology; poly(methylhydro)siloxane (PMHS); microcrystalline cellulose (MCC); hydrophobic modification; water contact angle response surface methodology; poly(methylhydro)siloxane (PMHS); microcrystalline cellulose (MCC); hydrophobic modification; water contact angle
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Xie, Y.; Cai, S.; Hou, Z.; Li, W.; Wang, Y.; Zhang, X.; Yang, W. Surface Hydrophobic Modification of Microcrystalline Cellulose by Poly(methylhydro)siloxane Using Response Surface Methodology. Polymers 2018, 10, 1335.

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