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URN etd-0731113-142733 Statistics This thesis had been viewed 1349 times. Download 0 times. Author Chung-Yu Guo Author's Email Address No Public. Department Materials Engineering Year 2012 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 91 Title COLD PLASMA TREATMENT AND GRAFT POLYMERIZATION OF ACRYLIC ACID FOR IMPROVING THE IMMOBILIZE CHITOSAN ON MATERIAL SURFACE Keyword acrylic acid chitosan IPA plasma graft polymerization graft polymerization IPA plasma chitosan acrylic acid Abstract Plasma treatment and UV light polymerization can be used quickly with easiness to modify material surface into functional surfaces. For example, graft polymerization of acrylic acid is used in combination with EDC/NHS to crosslinking biomolecules on surface. The investigation divided into two sessions. At first, IPA plasma treatment and graft acrylic acid polymer are used to immobilize chitosan. Secondary, plasma treatment and graft acrylic acid hydrogel are used to immobilize chitosan. Analyses of water contact angle, SEM, AFM, graft/immobilize weight density, XPS and antimicrobial testing are reported.
The first part, immobilize chitosan shows more hydrophobic property than graft with acrylic acid polymer, and water will slowly infiltrated in chitosan. Si wafer grafted with 10wt% AAc shows the high graft density about 1350μg/cm2. The higher concentration of grafted AAc will significantly reduce the roughness, Rq: 0.685 ~ 2.332nm. The second part, grafting acrylic hydrogel due to NMBA (cross-linking agent), the graft is relatively improved, Si (111) grafting density up to about 54.2 mg/cm2, and immobilize chitosan is the best. The antibacterial effect not well, only at graft AAc polymer 4 and 8 wt% have slight inhibition zone.
Advisor Committee Ko-Shao CHEN - advisor
Chun Huang - co-chair
Meng-Jiy WANG - co-chair
Ming-Tse Lin - co-chair
none - co-chair
Files Date of Defense 2013-06-18 Date of Submission 2013-07-31