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A New UV-Assisted Method for Surface Functionalization, Patterning of Ploymeric Materials and Its Application to Biomaterials

Author: HuangZhenHua
Tutor: YangWanTai
School: Beijing University of Chemical Technology
Course: Materials Science
Keywords: Ce3 Photocatalytic triggered Surface Modification Corn starch Coincidence
CLC: O631.3
Type: Master's thesis
Year: 2006
Downloads: 97
Quote: 0
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Abstract


Minte Xing firstly using Ce 3 of ultraviolet light , as a photocatalyst initiator , initiator the saturated small molecules such as monosaccharides , polyhydric alcohols , water - soluble macromolecules such as starch, polyvinyl alcohol, ethylene-based monomers such as acrylic acid, acrylamide , methyl methacrylate , etc. in the surface of the polymeric substrate modification. In addition, we also studied the traditional photoinitiator - benzophenone initiator starch modified in the coupling of the surface of the CPP film . X-ray electron spectroscopy (XPS) spectra reveal CE 3 < / SUP > can be successfully six yuan ketone sugar (D- fructose , L - sorbose ) and the six - membered aldose under acidic conditions ( D-glucose , D - galactose ) is fixed to the surface of the BOPP film . Ketose after the BOPP film surface coupling elements of membrane surface oxygen content greater than 21% , the aldose after the BOPP film surface coupling elements of membrane surface oxygen content of only about 11% . The water contact angle (CA) data also reveals differences in the modifying effect of a ketose and an aldose , ketose modified BOPP film surface water contact angle of about 47 ° , while the surface of the BOPP film of the aldose modified The water contact angle of 60 °. As a means of characterization of the surface of the water contact angle , D-fructose modified polymer substrate factors . The results show that , BOPP film with the extension of light , D - fructose modified water contact angle increases and decline ; the raise of Ce 3 initial concentration and system H concentration is conducive to the D-fructose in the coupling of the surface of the BOPP film modified . In the the modified CPP film system of the D-fructose , the experimental results show that with the increase in the initial concentration of D-fructose , the modified membrane surface water contact angle first decreased slightly increases

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
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