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Article

An Effective, Economical and Ultra-Fast Method for Hydrophobic Modification of NCC Using Poly(Methylhydrogen)Siloxane

College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
*
Author to whom correspondence should be addressed.
These authors contributed to this work equally.
Polymers 2019, 11(6), 963; https://doi.org/10.3390/polym11060963
Received: 24 April 2019 / Revised: 16 May 2019 / Accepted: 17 May 2019 / Published: 3 June 2019
(This article belongs to the Special Issue Cellulose and Renewable Materials)
Poor compatibility between nanocellulose crystals (NCCs) and major polymers has limited the application of NCC as bio-reinforcements. In this work, an effective and ultra-fast method was investigated to significantly improve the hydrophobicity of NCC by using poly(methylhydrogen)siloxane (PMHS) as modifier. PMHS possessed amounts of reactive –Si–H groups and hydrophobic –CH3 groups. The former groups were reactive with the hydroxyl groups of NCC, while the latter groups afforded NCC very low surface energy. As the weight ratio of PMHS to NCC was only 0.0005%, the hydrophobicity of NCC was significantly improved by increasing the water contact angle of NCC from 0° to 134°. The effect of weight ratio of PMHS to NCC and the hydrogen content of –Si–H in PMHS on the hydrophobicity and thermal stability was investigated in detail by Fourier transform infrared spectroscopy (FTIR), (X-ray Diffraction) XRD and (thermogravimetric analysis) TGA. The results indicated that PMHS chains were covalently grafted onto NCC and PMHS modification improved the thermal stability of NCC. View Full-Text
Keywords: nanocellulose; hydrophobic; surface modification; poly(methylhydrogen)siloxane; thermal stability nanocellulose; hydrophobic; surface modification; poly(methylhydrogen)siloxane; thermal stability
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MDPI and ACS Style

You, X.; Hu, Q.; Hu, X.; Chen, H.; Yang, W.; Zhang, X. An Effective, Economical and Ultra-Fast Method for Hydrophobic Modification of NCC Using Poly(Methylhydrogen)Siloxane. Polymers 2019, 11, 963. https://doi.org/10.3390/polym11060963

AMA Style

You X, Hu Q, Hu X, Chen H, Yang W, Zhang X. An Effective, Economical and Ultra-Fast Method for Hydrophobic Modification of NCC Using Poly(Methylhydrogen)Siloxane. Polymers. 2019; 11(6):963. https://doi.org/10.3390/polym11060963

Chicago/Turabian Style

You, Xueqing, Qingjian Hu, Xiaoyong Hu, Hanxian Chen, Wenbin Yang, and Xinxiang Zhang. 2019. "An Effective, Economical and Ultra-Fast Method for Hydrophobic Modification of NCC Using Poly(Methylhydrogen)Siloxane" Polymers 11, no. 6: 963. https://doi.org/10.3390/polym11060963

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