In this work, an alternative flame-retardant filler based on phosphate- and urea-grafted bamboo charcoal (BC-m) at 10–30 wt % addition was aimed at improving the flame retardancy of polylactic acid ...

The reactivity of the glass was tested by calculation of the reaction barrier of the hydrolysis reaction of pyrophosphoric acid and exposing phosphate glass surface to water and allowing equilibration ...

These can be attributed to P in pyrophosphoric acid, pyrophosphate or short chain polyphosphates. However, Blasco et al. (2006) attributed the -13 ppm signal to intermediate groups in short chain ...