9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide( DOPO)-based flame retardant( DOPO-DOPC) which contains carbon source was used to improve the flame retardancy of poly( ethylene terephthalate)( PET) fabrics. The pr...9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide( DOPO)-based flame retardant( DOPO-DOPC) which contains carbon source was used to improve the flame retardancy of poly( ethylene terephthalate)( PET) fabrics. The prepared DOPODOPC dispersion was applied onto PET fabrics via two kinds of processes,thermosol process and exhaustion process,and in the later using it alone or together with disperse dyes. The flame retardancy of PET fabrics was determined by limiting oxygen index( LOI) and vertical burning test. The results showed that DOPODOPC could obviously improve the flame retardancy of PET fabrics.The PET fabric treated by 60 g/L DOPO-DOPC dispersion via exhaustion process achieved an LOI value of 32. 3%,for example.The flame retardancy and dyeing performances showed that DOPODOPC dispersion could be used together with a part of disperse dyes in one bath. The thermal stability of DOPO-DOPC and the treated PET fabrics were investigated by thermogravimetric analysis( TGA). And the flame retardant mechanism of DOPO-DOPC treated PET fabrics was further investigated by pyrolysis-gas chromatography/mass spectrometry( Py-GC/MS), Fourier transform infrared spectroscopy( FTIR) and scanning electron microscopy( SEM).展开更多
Bacterial cellulose(BC) is a type of nanoscale cellulose produced by microorganisms.In this work,BC films were utilized as a template to in situ synthesize silver nanoparticles(AgNPs) by a variety of simple chemical s...Bacterial cellulose(BC) is a type of nanoscale cellulose produced by microorganisms.In this work,BC films were utilized as a template to in situ synthesize silver nanoparticles(AgNPs) by a variety of simple chemical strategies,including chemical reduction with NaBH4 or vitamin C,hydrothermal treatment and UV radiation.A comparative study of the formation of AgNPs such as the silver particle size and silver content,as well as the antibacterial activity of the BC-AgNPs nanocomposites by different preparation methods and reaction conditions was investigated.A beneficial support was provided for future applications of AgNPs contained BC composites with antibacterial properties.展开更多
基金National High Technology Research and Development Program 863 Project,China(No.2013AA06A307)
文摘9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide( DOPO)-based flame retardant( DOPO-DOPC) which contains carbon source was used to improve the flame retardancy of poly( ethylene terephthalate)( PET) fabrics. The prepared DOPODOPC dispersion was applied onto PET fabrics via two kinds of processes,thermosol process and exhaustion process,and in the later using it alone or together with disperse dyes. The flame retardancy of PET fabrics was determined by limiting oxygen index( LOI) and vertical burning test. The results showed that DOPODOPC could obviously improve the flame retardancy of PET fabrics.The PET fabric treated by 60 g/L DOPO-DOPC dispersion via exhaustion process achieved an LOI value of 32. 3%,for example.The flame retardancy and dyeing performances showed that DOPODOPC dispersion could be used together with a part of disperse dyes in one bath. The thermal stability of DOPO-DOPC and the treated PET fabrics were investigated by thermogravimetric analysis( TGA). And the flame retardant mechanism of DOPO-DOPC treated PET fabrics was further investigated by pyrolysis-gas chromatography/mass spectrometry( Py-GC/MS), Fourier transform infrared spectroscopy( FTIR) and scanning electron microscopy( SEM).
基金“111 Project” Biomedical Textile Materials Science and Technology,China(No.B07024)Natural Science Foundation of Shanghai,China(No.15ZR1401000)the Fundamental Research Funds for the Central Universities,China
文摘Bacterial cellulose(BC) is a type of nanoscale cellulose produced by microorganisms.In this work,BC films were utilized as a template to in situ synthesize silver nanoparticles(AgNPs) by a variety of simple chemical strategies,including chemical reduction with NaBH4 or vitamin C,hydrothermal treatment and UV radiation.A comparative study of the formation of AgNPs such as the silver particle size and silver content,as well as the antibacterial activity of the BC-AgNPs nanocomposites by different preparation methods and reaction conditions was investigated.A beneficial support was provided for future applications of AgNPs contained BC composites with antibacterial properties.
