Study Of Polymer Surface Hydroxylation And Its Applications On Chemical Bond Assembly And Biology Functionalization

It was significant that hydroxyl groups were introduced onto polymer surface. Hydroxyl groups not only could increase the polymer surface free energy and improve the polymer surface property, but also could react with many kinds of compounds in order to further modify polymer surface; at the same time, hydroxyl groups on polymer surface provided a foundation for self-assembly and protein functionalization. The main contents of this thesis were as follows:1. Hydroxylation was proceeded by hydrolysis of the sulfate anion groups which were developed from previous work. The hydrolysis reaction could be monitored by measuring the static water contact angle (CA) of the hydrolyzed film. At beginning, CA underwent a significant increase, then increased gradually and leveled off after about 14 hr; the trifluoroacetic anhydride derivatization reaction was used to confirm hydroxyl groups on the surface. The conversion of sulfate anion groups to hydroxyl groups was measured by X-ray photoelectron spectroscopy (XPS): the conversions were 50.6% on BOPP (biaxially oriented polypropylene), 62.1% on LDPE (low-density...