File Name : figure s1.tif

Caption : figure s1  maldi-tof spectra of (a) mpeg2k-hs; (b) mpeg36-hs; (c) mpeg45-hs; (d) mpeg2k-oh; (e) mpeg36-oh; (f) mpeg45-oh.

File Name : figure s2.tif

Caption : figure s2  (a) grafting density of peg on the surface of aunps; tga curves of (b) peg36-aunps; (c) peg45-aunps; (d) peg2k-aunps.