Melamine-Formaldehyde Acrylamide and Gum Polymer Impregnated Wood Polymer Nanocomposite  

作　　者：Ankita Hazarika Biplab K. Deka Tarun K. Maji 

机构地区：[1]Department of Chemical Sciences, Tezpur University, Assam-784 028, India

出　　处：《Journal of Bionic Engineering》2015年第2期304-315,共12页仿生工程学报（英文版）

摘　　要：Melamine-formaldehyde acrylamide （MFA） copolymer was prepared and vacuum impregnated into wood in presence of 1,3-dimethylol 4,5-dihydroxyethylene urea （DMDHEU） as crosslinker, vinyltrichlorosilane （VTCS） modified montmorillonite （MMT） and Gum Polymer （GP） derived from Moringa oleifera as a flame retarding agent under catalyst heat treatment. The formation of MFA and DMDHEU was confirmed by Nuclear Magnetic Resonance （NMR） and Fourier Transform Infrared Spectroscopy （FTIR） studies. The crystallinity of the composites and interaction among them was studied by X-ray Diffrac- tometry （XRD） and FTIR study. Maximum interaction was found in wood samples treated with MFA/DMDHEU/GP （3 phr）/MMT as shown by FTIR. Scanning Electron Microscopy （SEM） revealed the presence of polymer and MMT in the composites. Transmission Electron Microscopy （TEM） study indicated the incorporation of MMT into the wood polymer composite. Thermal stability and flammability were checked by Thermogravimetric Analyser （TGA） and Limiting Oxygen Index （LOI） instrument. The treatment of wood with GP had a significant influence on the thermal stability and flame retardant properties of the composites. Remarkable improvement in water repellency and chemical resistance was found for the treated wood samples. The composites showed significant improvement in mechanical properties due to treatment.Melamine-formaldehyde acrylamide （MFA） copolymer was prepared and vacuum impregnated into wood in presence of 1,3-dimethylol 4,5-dihydroxyethylene urea （DMDHEU） as crosslinker, vinyltrichlorosilane （VTCS） modified montmorillonite （MMT） and Gum Polymer （GP） derived from Moringa oleifera as a flame retarding agent under catalyst heat treatment. The formation of MFA and DMDHEU was confirmed by Nuclear Magnetic Resonance （NMR） and Fourier Transform Infrared Spectroscopy （FTIR） studies. The crystallinity of the composites and interaction among them was studied by X-ray Diffrac- tometry （XRD） and FTIR study. Maximum interaction was found in wood samples treated with MFA/DMDHEU/GP （3 phr）/MMT as shown by FTIR. Scanning Electron Microscopy （SEM） revealed the presence of polymer and MMT in the composites. Transmission Electron Microscopy （TEM） study indicated the incorporation of MMT into the wood polymer composite. Thermal stability and flammability were checked by Thermogravimetric Analyser （TGA） and Limiting Oxygen Index （LOI） instrument. The treatment of wood with GP had a significant influence on the thermal stability and flame retardant properties of the composites. Remarkable improvement in water repellency and chemical resistance was found for the treated wood samples. The composites showed significant improvement in mechanical properties due to treatment.

关 键 词：WOOD gum polymer NANOCOMPOSITES flame retardancy 

分 类 号：TQ226.62[化学工程—有机化工] TS727.5[轻工技术与工程—制浆造纸工程]