02543nas a2200505   4500000000100000008004100001653002900042653001200071653001300083653001000096653002200106653002300128653001100151653001500162653002600177653002900203653001400232653003400246653000900280653001900289653002900308653000900337653002600346653001200372653001800384653002200402653001200424653001400436653000800450653002000458653000800478653001800486653000900504653001100513653001000524100001900534700001800553700001800571700001900589245018300608300001200791490000800803520120600811022002002017                                       d10aAntibacterial properties10aCoating10aCoatings10aColor10aCondensed tannins10aDioscorea cirrhosa10aDyeing10aFlavonoids10aFunctional properties10aGambiered Guangdong silk10aGuangdong10aIntangible cultural heritages10aIron10aIron compounds10aMorphological structures10aSilk10aTannin-iron complexes10aTannins10aWaterproofing10aassessment method10aCoating10acommodity10adye10ainstrumentation10amud10aplant extract10asalt10atannin10atuber1 aTong-Tong Yang1 aJin-Ping Guan1 aGuoqiang Chen1 aRen-Cheng Tang00aInstrumental characterization and functional assessment of the two-color silk fabric coated by the extract from Dioscorea cirrhosa tuber and mordanted by iron salt-containing mud  a117-1250 v1113 aThe extract from Dioscorea cirrhosa tuber is rich in condensed tannins, and in China it is used to produce a traditional two-color silk fabric (Gambiered Guangdong silk) characterized by shiny black on the face side and reddish brown on the back side. The process of Gambiered Guangdong silk identified as a National Intangible Cultural Heritage includes repeated coating with the condensed tannin solution from Dioscorea cirrhosa tuber followed by mordanting with iron salt-containing mud. In this work, the color characteristics, structures, chemical compositions, thermal behaviors, and functional properties of two-color silk fabric were studied. Condensed tannin coating and iron salt mordanting significantly changed the morphological structure and thermal behavior of silk fabric, and imparted a series of functionalities including flame retardant, waterproof, antioxidant and antibacterial properties to silk fabric. In particular, tannin coating as a char forming agent during combustion improved the flame retardancy of silk fabric, and the blocking of the spaces between silk fibers by an amount of coated tannins and tannin-iron complexes made silk fabric possess good waterproof function.  a09266690 (ISSN)